针对永磁起动/发电系统在模式切换过程中出现电压坠落的问题，本文在传统模式切换策略的基础上，提出了一种考虑电容充放电延迟的模式切换策略。通过考虑电容充放电延迟过程，改变控制结构与电气负载开关切换时间，降低切换过程中的坠落电压。在模式切换控制器中设置发电模式转速阈值，使其在发动机故障转速无法维持发电模式时平稳切换至起动模式。该切换策略提高了系统的稳定性。通过仿真试验，验证了上述切换策略的正确性和可行性。

In order to solve the problem of voltage drop in the process of mode switching in permanent magnet starting/generating system, a mode switching strategy considering capacitor charging and discharging delay is proposed based on the traditional mode switching strategy. By considering the delay process of capacitor charging and discharging, the control structure and the switching time of electrical load switch are changed to reduce the drop voltage during the switching process. Set the generation mode speed threshold in the mode switching controller, so that it can smoothly switch to the starting mode when the generation mode cannot be maintained. This switching strategy improves the system stability. Through simulation experiment, the correctness and feasibility of the above switching strategy are verified.

沈阳市中青年科技创新人才支持计划项目（RC210213）