Mobile website
Volume 45,Issue 3,2018 Table of Contents
2018, 45(3):1-5.
Abstract:
The difficulty of rotor position and speed estimation for sensorless position of built permanent magnet synchronous motor (IPMSM) was discussed. A method of rotor position and velocity estimation based on improved stator flux observer was proposed. By introducing the concept of effective flux linkage, the voltage equation of IPMSM was transformed equivalently, and then the back electromotive force in the two phase stationary coordinate system was integrated. In order to suppress the integral saturation and DC drift problems caused by the integral part of the back electromotive force, a low-pass filter with automatic cut-off frequency was designed instead of the integrator. For the low-pass low-pass filter caused by the flux amplitude attenuation and phase advance problems, the use of saturated feedback compensated for the observation error. The phase locked loop was used to estimate the position. The MATLAB/Simulink simulation platform was built. The simulation results show that this method can realize the high accuracy estimation of the rotor position in the full speed range of the built-in permanent magnet synchronous motor.
The difficulty of rotor position and speed estimation for sensorless position of built permanent magnet synchronous motor (IPMSM) was discussed. A method of rotor position and velocity estimation based on improved stator flux observer was proposed. By introducing the concept of effective flux linkage, the voltage equation of IPMSM was transformed equivalently, and then the back electromotive force in the two phase stationary coordinate system was integrated. In order to suppress the integral saturation and DC drift problems caused by the integral part of the back electromotive force, a low-pass filter with automatic cut-off frequency was designed instead of the integrator. For the low-pass low-pass filter caused by the flux amplitude attenuation and phase advance problems, the use of saturated feedback compensated for the observation error. The phase locked loop was used to estimate the position. The MATLAB/Simulink simulation platform was built. The simulation results show that this method can realize the high accuracy estimation of the rotor position in the full speed range of the built-in permanent magnet synchronous motor.
2018, 45(3):6-10.
Abstract:
In order to improve the dynamic quality of the three-phase PMSM speed control system. A speed controller based on sliding mode control was designed, and the control system model was built and simulated by MATLAB/Simulink simulation software. The simulation results show the effectiveness of the permanent magnet synchronous motor speed controller proposed, and obtain good speed tracking accuracy and anti-load disturbance capability.
In order to improve the dynamic quality of the three-phase PMSM speed control system. A speed controller based on sliding mode control was designed, and the control system model was built and simulated by MATLAB/Simulink simulation software. The simulation results show the effectiveness of the permanent magnet synchronous motor speed controller proposed, and obtain good speed tracking accuracy and anti-load disturbance capability.
2018, 45(3):11-16, 45.
Abstract:
A composite control strategy of permanent magnet synchronous motor combined with sliding mode speed control and extended sliding mode disturbance observer was proposed. The new approximation law design was adopted by the sliding mode speed control, and the extended sliding mode disturbance observer could accurately estimate the inner parameters perturbation and external load interference. The realtime estimation of the integrated disturbance items in the control system through the system disturbance estimation link was realized, then the estimated value was used to do the feedforward compensation for the speed control link, and the active disturbance rejection control of the system was realized. The experimental results verify the validity and feasibility of the proposed control strategy.
A composite control strategy of permanent magnet synchronous motor combined with sliding mode speed control and extended sliding mode disturbance observer was proposed. The new approximation law design was adopted by the sliding mode speed control, and the extended sliding mode disturbance observer could accurately estimate the inner parameters perturbation and external load interference. The realtime estimation of the integrated disturbance items in the control system through the system disturbance estimation link was realized, then the estimated value was used to do the feedforward compensation for the speed control link, and the active disturbance rejection control of the system was realized. The experimental results verify the validity and feasibility of the proposed control strategy.
2018, 45(3):17-21.
Abstract:
In view of worse adaptive ability, robustness and anti-interference ability existed in direct torque control system of asynchronous motor based on conventional PID speed regulator, a new direct torque control method of asynchronous motor based on intelligent neuron PID speed regulator was proposed. The intelligent neuron PID speed regulator was designed by two neuron controllers, and parameters of this speed regulator could be adjusted online. The flux regulator and torque regulator were designed by hysteresis regulator respectively. The simulation results show that the direct torque control system of asynchronous motor based on intelligent neuron PID speed regulator can rapidly track the reference speed changes and the control system has stronger anti-interference performance, adaptive performance and stronger robustness.
In view of worse adaptive ability, robustness and anti-interference ability existed in direct torque control system of asynchronous motor based on conventional PID speed regulator, a new direct torque control method of asynchronous motor based on intelligent neuron PID speed regulator was proposed. The intelligent neuron PID speed regulator was designed by two neuron controllers, and parameters of this speed regulator could be adjusted online. The flux regulator and torque regulator were designed by hysteresis regulator respectively. The simulation results show that the direct torque control system of asynchronous motor based on intelligent neuron PID speed regulator can rapidly track the reference speed changes and the control system has stronger anti-interference performance, adaptive performance and stronger robustness.
2018, 45(3):22-29.
Abstract:
In order to enhance the small-disturbance voltage stability of wind/photovoltaic/diesel microgrid including doubly fed induction generator (DFIG), DFIG reactive power control uses V-Qdroop control and the integral logic loop. The reactive power limit corresponding to the DFIG active power in the case of variable wind speed was calculated, so that the integral logic loop and the V-Qdroop control were limited. The typical eigenvalues reflecting the voltage response characteristic of the microgrid were found by the small-signal analysis method. The influence on the typical eigenvalues distribution when adopting different values of the DFIG reactive power droop coefficient was analyzed. In order to solve the problems caused by large and small values of reactive droop coefficient, after parameter improvement, the voltage regulation effect of DFIG was promoted and the microgrid has better small-disturbance voltage stability. The microgrid model using the software DIgSILENT/PowerFactory was estabished, and the effectiveness of the proposed strategy and method was verified by the dynamic time domain simulation.
In order to enhance the small-disturbance voltage stability of wind/photovoltaic/diesel microgrid including doubly fed induction generator (DFIG), DFIG reactive power control uses V-Qdroop control and the integral logic loop. The reactive power limit corresponding to the DFIG active power in the case of variable wind speed was calculated, so that the integral logic loop and the V-Qdroop control were limited. The typical eigenvalues reflecting the voltage response characteristic of the microgrid were found by the small-signal analysis method. The influence on the typical eigenvalues distribution when adopting different values of the DFIG reactive power droop coefficient was analyzed. In order to solve the problems caused by large and small values of reactive droop coefficient, after parameter improvement, the voltage regulation effect of DFIG was promoted and the microgrid has better small-disturbance voltage stability. The microgrid model using the software DIgSILENT/PowerFactory was estabished, and the effectiveness of the proposed strategy and method was verified by the dynamic time domain simulation.
2018, 45(3):30-34.
Abstract:
According to the generator excitation control system with uncertain parameters, a novel adaptive backstepping robust controller was designed. In the design process, based on the backstepping method for designing the controller, the nonlinear damping algorithm to reduce the "coefficient expansion" of the backstepping method was introduced, which could effectively improve the robustness of the controller. And the adaptive estimation of damping coefficient was designed by useing the I&I adaptive control method. The simulation research was carried out by MATLAB software to verify the effectiveness and superiority of the algorithm.
According to the generator excitation control system with uncertain parameters, a novel adaptive backstepping robust controller was designed. In the design process, based on the backstepping method for designing the controller, the nonlinear damping algorithm to reduce the "coefficient expansion" of the backstepping method was introduced, which could effectively improve the robustness of the controller. And the adaptive estimation of damping coefficient was designed by useing the I&I adaptive control method. The simulation research was carried out by MATLAB software to verify the effectiveness and superiority of the algorithm.
2018, 45(3):35-40.
Abstract:
For the study of speed control precision of permanent magnet synchronous motor (PMSM) on electric locomotives during traction, a mathematical model of PMSM was established in the d-qcoordinate system after considering unknown radially time-varying load torque of wheelset generated by wheel rail contact irregularity and static weight of locomotive body. Nonlinear torque observer (NTO) was designed to estimate the actual value of the time-varying torque with the observation error approached by adaptive fuzzy logic system. According to the Lyapunov stability theory, adaptive fuzzy sliding mode controller with NTO was constructed after the introduction of Nussbaum function in voltage controller of daxis for the investigation of influence of zero crossing of daxis voltage on speed control and torque observation. Theoretical analyses and simulation results demonstrate that the PMSM speed control system on electric locomotives has closed loop bounded error output against zero crossing of daxis voltage and unknown time-varying torque on the railway whose observation error is constricted to 0.
For the study of speed control precision of permanent magnet synchronous motor (PMSM) on electric locomotives during traction, a mathematical model of PMSM was established in the d-qcoordinate system after considering unknown radially time-varying load torque of wheelset generated by wheel rail contact irregularity and static weight of locomotive body. Nonlinear torque observer (NTO) was designed to estimate the actual value of the time-varying torque with the observation error approached by adaptive fuzzy logic system. According to the Lyapunov stability theory, adaptive fuzzy sliding mode controller with NTO was constructed after the introduction of Nussbaum function in voltage controller of daxis for the investigation of influence of zero crossing of daxis voltage on speed control and torque observation. Theoretical analyses and simulation results demonstrate that the PMSM speed control system on electric locomotives has closed loop bounded error output against zero crossing of daxis voltage and unknown time-varying torque on the railway whose observation error is constricted to 0.
2018, 45(3):41-45.
Abstract:
The current loop of permanent magnet synchronous motor was controlled by PID algorithm or improved PID algorithm. The robustness of PID algorithm and improved PID algorithm was unsatisfactory. The adaptive cloud model control algorithm for permanent magnet synchronous motor was proposed to solve the problem. After analyzing the structure of adaptive cloud model, an adaptive cloud model controller for permanent magnet synchronous motor was designed, and the adaptive cloud model structure was deduced.The experimental platform of PMSM Based on adaptive cloud model control algorithm was constructed. The experimental results show that the adaptive cloud model control algorithm for permanent magnet synchronous motor is effective and stable.
The current loop of permanent magnet synchronous motor was controlled by PID algorithm or improved PID algorithm. The robustness of PID algorithm and improved PID algorithm was unsatisfactory. The adaptive cloud model control algorithm for permanent magnet synchronous motor was proposed to solve the problem. After analyzing the structure of adaptive cloud model, an adaptive cloud model controller for permanent magnet synchronous motor was designed, and the adaptive cloud model structure was deduced.The experimental platform of PMSM Based on adaptive cloud model control algorithm was constructed. The experimental results show that the adaptive cloud model control algorithm for permanent magnet synchronous motor is effective and stable.
2018, 45(3):46-50.
Abstract:
Interior Permanent Magnet Synchronous Motor (IPMSM) adopting vector control method has decoupling complexity and difficulty of additional optimization goal integrated into system control, IPMSM torque predictive control method based on Maximum Torque per Current (MTPA) is proposed. On the basis of deducing MTPA principle, torque predictive control principle and performance index function are analyzed. 22 kW IPMSM prototype simulation and experimental results show that the system has good static and dynamic performance under load variation condition in full range of speed. The proposed method has higher stator current utilization rate under heavy load condition, and electric vehicle drive performance and efficiency index requirements are achieved.
Interior Permanent Magnet Synchronous Motor (IPMSM) adopting vector control method has decoupling complexity and difficulty of additional optimization goal integrated into system control, IPMSM torque predictive control method based on Maximum Torque per Current (MTPA) is proposed. On the basis of deducing MTPA principle, torque predictive control principle and performance index function are analyzed. 22 kW IPMSM prototype simulation and experimental results show that the system has good static and dynamic performance under load variation condition in full range of speed. The proposed method has higher stator current utilization rate under heavy load condition, and electric vehicle drive performance and efficiency index requirements are achieved.
2018, 45(3):51-58.
Abstract:
Based on the improved voltage model rotor flux, a speed sensorless vector control of bearingless induction motor was constructed based on rotor-flux orientation. MATLAB/Simulink simulation results show that the improved voltage model rotor flux proposed improves the observation accuracy of the rotor flux. At the same time, based on the speed sensorless vector control of bearingless induction motor oriented by rotor-flux, the identified speed and the measured speed has a good consistency under the condition of no-load speed regulation and load, and the motor can be stable suspension operation, that verifies the effectiveness of the proposed scheme.
Based on the improved voltage model rotor flux, a speed sensorless vector control of bearingless induction motor was constructed based on rotor-flux orientation. MATLAB/Simulink simulation results show that the improved voltage model rotor flux proposed improves the observation accuracy of the rotor flux. At the same time, based on the speed sensorless vector control of bearingless induction motor oriented by rotor-flux, the identified speed and the measured speed has a good consistency under the condition of no-load speed regulation and load, and the motor can be stable suspension operation, that verifies the effectiveness of the proposed scheme.
2018, 45(3):59-66.
Abstract:
Aiming at the direct starting problem of three-phase asynchronous motor for hoisting equipment, the T type equivalent circuit of asynchronous motor was analyzed. The working principle of thyristor voltage regulating circuit was expounded. A soft start method of asynchronous motor based on trigger angle timing control was proposed. The corresponding system simulation model was built based on MATLAB/Simulink. Simulation analysis of the proposed method was carried out, and the correctness of the proposed method was verified. The software and hardware of the corresponding soft starter were designed based on single chip microcomputer. Test tests were carried out. The results show that the proposed method can effectively realize the smooth starting of three-phase asynchronous motor, and the starting current is small, which can effectively reduce the influence of starting process on the motor and the power grid.
Aiming at the direct starting problem of three-phase asynchronous motor for hoisting equipment, the T type equivalent circuit of asynchronous motor was analyzed. The working principle of thyristor voltage regulating circuit was expounded. A soft start method of asynchronous motor based on trigger angle timing control was proposed. The corresponding system simulation model was built based on MATLAB/Simulink. Simulation analysis of the proposed method was carried out, and the correctness of the proposed method was verified. The software and hardware of the corresponding soft starter were designed based on single chip microcomputer. Test tests were carried out. The results show that the proposed method can effectively realize the smooth starting of three-phase asynchronous motor, and the starting current is small, which can effectively reduce the influence of starting process on the motor and the power grid.
2018, 45(3):67-71, 84.
Abstract:
The paper which was focus on the efficiency-optimization of IPMSM drive system studied the MTPA system and analyzed the drawbacks of the MTPA. Based on the traditional efficiency-optimization algorithm, a novel LMC control strategy was proposed that the effect of copper loss, iron loss and stray loss and the second compensation for parameter variation were fully considered. To met the efficiency-optimization accuracy and engineering realizable, the engineering simplification were done in practical application. The simulation model of system with MATLAB was established, the performance of two kinds control strategy were compared and analyzed, the simulation results demonstrate the feasibility of the control strategy.
The paper which was focus on the efficiency-optimization of IPMSM drive system studied the MTPA system and analyzed the drawbacks of the MTPA. Based on the traditional efficiency-optimization algorithm, a novel LMC control strategy was proposed that the effect of copper loss, iron loss and stray loss and the second compensation for parameter variation were fully considered. To met the efficiency-optimization accuracy and engineering realizable, the engineering simplification were done in practical application. The simulation model of system with MATLAB was established, the performance of two kinds control strategy were compared and analyzed, the simulation results demonstrate the feasibility of the control strategy.
2018, 45(3):72-77.
Abstract:
An improving PID control algorithm based on extended Kalman filter was proposed. The algorithm uses the eddy current sensor to measure the rotor displacement as the amount of measurement, and the output current of the power amplifier as the amount of input, the actual eccentric displacement of the rotor was estimated by the system state equation and the noise statistical characteristic, which effectively solves the problem of the influence of the signal noise on the control accuracy.The result of simulation and experiment prove the proposed algorithm to be feasible and effective.
An improving PID control algorithm based on extended Kalman filter was proposed. The algorithm uses the eddy current sensor to measure the rotor displacement as the amount of measurement, and the output current of the power amplifier as the amount of input, the actual eccentric displacement of the rotor was estimated by the system state equation and the noise statistical characteristic, which effectively solves the problem of the influence of the signal noise on the control accuracy.The result of simulation and experiment prove the proposed algorithm to be feasible and effective.
2018, 45(3):78-84.
Abstract:
The Dual-Stator Permanent Magnet Brushless (DS-PMBL) motor with surface-mounted series magnetic circuit has great study value by its changeable flux. The major magnetic flux is made up of axial and radial flux. The causes and characteristics of two kinds of flux were analysed, and by altering pole embrace and adding weight reduction hole to optimize the model. The model’s performance was validated by finite element analysis.
The Dual-Stator Permanent Magnet Brushless (DS-PMBL) motor with surface-mounted series magnetic circuit has great study value by its changeable flux. The major magnetic flux is made up of axial and radial flux. The causes and characteristics of two kinds of flux were analysed, and by altering pole embrace and adding weight reduction hole to optimize the model. The model’s performance was validated by finite element analysis.
2018, 45(3):85-89.
Abstract:
Aiming at the limitations of the discrete model of the induction motor using first-order Euler with full speed range, the model was unstable in high speed regional, an model based on different reference frame was studied. The model was based on the rotor equation in the rotor reference frame and the stator equation in the stationary reference frame, and use the stator flux and the rotor flux as the state variable to design the discrete matrix to realize the estimation of flux. The stability of the hybird discrete model can be proved by the stability theory of discrete domain. The root locus plot of the discrete model was in the stable region to achieve stability within the whole-speed range. The model was verified by MATLAB.
Aiming at the limitations of the discrete model of the induction motor using first-order Euler with full speed range, the model was unstable in high speed regional, an model based on different reference frame was studied. The model was based on the rotor equation in the rotor reference frame and the stator equation in the stationary reference frame, and use the stator flux and the rotor flux as the state variable to design the discrete matrix to realize the estimation of flux. The stability of the hybird discrete model can be proved by the stability theory of discrete domain. The root locus plot of the discrete model was in the stable region to achieve stability within the whole-speed range. The model was verified by MATLAB.
2018, 45(3):90-96.
Abstract:
Considering the opening of stator slot, the precision of air gap flux density error correction directly affected accuracy of cogging torque. Correcting magnetic flux leakage of flux barrier, magnetic field intensity inside the rotor can be equivalent to the one on rotor surface. The mathematical models of opening slots and half opening slots were established respectively. The variation of magnetic path length was analyzed by partitions magnetic circuit, for illustrating mathematical correlation of cogging torque and different slot opening shape. The effect of various grades silicon steel sheet on cogging torque was analyzed. The study shows that the method above can access comparatively high approximation precision, the material determined by comparative analysis can reduce cogging torque effectively as well.
Considering the opening of stator slot, the precision of air gap flux density error correction directly affected accuracy of cogging torque. Correcting magnetic flux leakage of flux barrier, magnetic field intensity inside the rotor can be equivalent to the one on rotor surface. The mathematical models of opening slots and half opening slots were established respectively. The variation of magnetic path length was analyzed by partitions magnetic circuit, for illustrating mathematical correlation of cogging torque and different slot opening shape. The effect of various grades silicon steel sheet on cogging torque was analyzed. The study shows that the method above can access comparatively high approximation precision, the material determined by comparative analysis can reduce cogging torque effectively as well.
2018, 45(3):97-102.
Abstract:
Based on the ANSYS multi field simulation software platform, the fatigue characteristic analysis of the shaft of the high speed induction motor was carried out. The fatigue strength and the reliability of high speed operation of the high speed induction motor shaft are checked. And the life of the motor shaft is predicted. The influence of the electromagnetic force on the fatigue life of the shaft is analyzed. And the type of the fatigue characteristic is judged. The frequency and amplitude of the electromagnetic force acting on the motor structure and the natural frequency of each order of the motor shaft are compared and analyzed. And the strength of the motor shaft is checked. When the shaft does not break due to the electromagnetic vibration, the electromagnetic force is equivalent to the static stress. And the fatigue characteristic of the shaft is analyzed. Whether the motor shaft occurs the short cycle fatigue damage during the life cycle of the motor is checked. The concave fillet design is adopted to further improve the structure reliability of the shaft and the shaft life of the motor.
Based on the ANSYS multi field simulation software platform, the fatigue characteristic analysis of the shaft of the high speed induction motor was carried out. The fatigue strength and the reliability of high speed operation of the high speed induction motor shaft are checked. And the life of the motor shaft is predicted. The influence of the electromagnetic force on the fatigue life of the shaft is analyzed. And the type of the fatigue characteristic is judged. The frequency and amplitude of the electromagnetic force acting on the motor structure and the natural frequency of each order of the motor shaft are compared and analyzed. And the strength of the motor shaft is checked. When the shaft does not break due to the electromagnetic vibration, the electromagnetic force is equivalent to the static stress. And the fatigue characteristic of the shaft is analyzed. Whether the motor shaft occurs the short cycle fatigue damage during the life cycle of the motor is checked. The concave fillet design is adopted to further improve the structure reliability of the shaft and the shaft life of the motor.
2018, 45(3):103-107.
Abstract:
The 3D temperature model of the machine was established,and fluid-solid coupling method was empoyed to analyze the field. The experimental results have validated the temperature predictions. Based on the proposed thermal field model, some work is given to the analysis of thermal sensitivity to the thermal conductivity, which could help optimum design of high speed permanent magnet machine in future applications.
The 3D temperature model of the machine was established,and fluid-solid coupling method was empoyed to analyze the field. The experimental results have validated the temperature predictions. Based on the proposed thermal field model, some work is given to the analysis of thermal sensitivity to the thermal conductivity, which could help optimum design of high speed permanent magnet machine in future applications.
2018, 45(3):108-111, 116.
Abstract:
A test apparatus that testing for the electrical insulation properties of the insulation systems under 0.1 MPa helium and air environment respectively was designed. Partial discharge inception voltage (PDIV), corona inception voltage, interturn impact, insulation resistance and power frequency breakdown voltage of insulation system model for helium circulator drive motor under 0.1 MPa helium and air environment respectively were tested. Test showed that some insulating properties of the insulation system in helium environment dropped significantly compared with that in the air environment at 0.1 MPa pressure, PDIV of insulation system in helium environment is about 50% of that in the air environment, corona inception voltage of insulation system in helium environment is about 20% to 25% of that in the air environment, flashover breakdown voltage of insulation system in helium environment is about 50% of that in the air environment.
A test apparatus that testing for the electrical insulation properties of the insulation systems under 0.1 MPa helium and air environment respectively was designed. Partial discharge inception voltage (PDIV), corona inception voltage, interturn impact, insulation resistance and power frequency breakdown voltage of insulation system model for helium circulator drive motor under 0.1 MPa helium and air environment respectively were tested. Test showed that some insulating properties of the insulation system in helium environment dropped significantly compared with that in the air environment at 0.1 MPa pressure, PDIV of insulation system in helium environment is about 50% of that in the air environment, corona inception voltage of insulation system in helium environment is about 20% to 25% of that in the air environment, flashover breakdown voltage of insulation system in helium environment is about 50% of that in the air environment.
2018, 45(3):112-116.
Abstract:
A method of initial position angle estimation for switched reluctance motor is presented based on the pulse current linear triangular model.Firstly,the motor phase inductance is partitioned, the initial partition of the rotor is estimated by comparing the peak value of each phase pulse current. Second, the envelope of the each partition pulse current peak is linearized, and composition triangle, using the mathematical knowledge of triangle, the mathematical model between pulse current peak value and initial position angle is obtained.Thirdly,the measured pulse current peak are substituted into the mathematical model,and the rotor initial position angle is calculated. Last,the experimental results show that the proposed sensorless control methods is sufficiently accurate and works effective.
A method of initial position angle estimation for switched reluctance motor is presented based on the pulse current linear triangular model.Firstly,the motor phase inductance is partitioned, the initial partition of the rotor is estimated by comparing the peak value of each phase pulse current. Second, the envelope of the each partition pulse current peak is linearized, and composition triangle, using the mathematical knowledge of triangle, the mathematical model between pulse current peak value and initial position angle is obtained.Thirdly,the measured pulse current peak are substituted into the mathematical model,and the rotor initial position angle is calculated. Last,the experimental results show that the proposed sensorless control methods is sufficiently accurate and works effective.
2018, 45(3):117-122.
Abstract:
Doubly fed induction generator has been widely used in wind power industry. Compared with electrical failure, mechanical failure in practical engineering operation in particular can not be ignored, and are mostly associated with the air gap eccentricity, whether the rotor rigidity or insufficient bearing wear or installation error, will cause the air gap eccentricity, and even burning motor, air gap eccentric fault diagnosis of wind turbine. So it is very important accurate and efficient. This paper first introduces the failure mechanism of double fed asynchronous wind generator air gap eccentric fault diagnosis method, related to the current key classification described finally in the future, the doubly fed induction wind generator air gap eccentric fault diagnosis method of the development trend and direction.
Doubly fed induction generator has been widely used in wind power industry. Compared with electrical failure, mechanical failure in practical engineering operation in particular can not be ignored, and are mostly associated with the air gap eccentricity, whether the rotor rigidity or insufficient bearing wear or installation error, will cause the air gap eccentricity, and even burning motor, air gap eccentric fault diagnosis of wind turbine. So it is very important accurate and efficient. This paper first introduces the failure mechanism of double fed asynchronous wind generator air gap eccentric fault diagnosis method, related to the current key classification described finally in the future, the doubly fed induction wind generator air gap eccentric fault diagnosis method of the development trend and direction.
2018, 45(3):123-128.
Abstract:
In order to accurately identify the fault type of wind turbines, this paper considers the correlation between vibration and current signal sources, presents a fault diagnosis method of information fusion and a new relevance vector machine. Got the data from wind power generator test bench, extracting data with higher sensitivity characteristic parameters of diagnosis as samples, then built an improved vibration and current detection based on relevance vector machine model of fault diagnosis. The model of multi signal source fault diagnosis is established by means of information fusion, and finally the fault diagnosis result of wind turbine is obtained. The experimental results show that the proposed method is more accurate and can identify the fault types of wind turbines with electromechanical coupling characteristics compared with the single signal based fault diagnosis method.
In order to accurately identify the fault type of wind turbines, this paper considers the correlation between vibration and current signal sources, presents a fault diagnosis method of information fusion and a new relevance vector machine. Got the data from wind power generator test bench, extracting data with higher sensitivity characteristic parameters of diagnosis as samples, then built an improved vibration and current detection based on relevance vector machine model of fault diagnosis. The model of multi signal source fault diagnosis is established by means of information fusion, and finally the fault diagnosis result of wind turbine is obtained. The experimental results show that the proposed method is more accurate and can identify the fault types of wind turbines with electromechanical coupling characteristics compared with the single signal based fault diagnosis method.
You are thevisitor
沪ICP备16038578号-3
Electric Machines & Control Application ® 2025
Supported by:Beijing E-Tiller Technology Development Co., Ltd.
沪ICP备16038578号-3
Electric Machines & Control Application ® 2025
Supported by:Beijing E-Tiller Technology Development Co., Ltd.
