详细介绍一种通过交直流变换共用主电路实现同一电源双路分时输出的方法,给出了交直流共用主电路的拓扑结构及其工作原理,分析了交流变换五电平载波移相及直流变换级联移相控制策略。为了在三相交流变换电路的基础上实现大功率直流输出,并兼顾各相功率均衡,提出了一种相位角同步的均流控制策略。最后通过试验实现了同一电源分时输出交流115 V/400 Hz/100 kVA和直流270 V/80 kW,验证了所述拓扑结构和控制策略的合理性与可行性。

A method to achieve the timesharing output of the same power based on AC/DC electrical source sharing the same main circuit was introduced. The topology of main circuit and its working principle were given. The fivelevel carrier phaseshifting modulating strategy of AC transform and the cascaded phaseshifting control strategy of DC transform were analysed. A phaseanglesynchronous current balancing control strategy was proposed, in order to realize high power DC output and the balance of the power of each phase on the basis of threephase AC converter. Experimental results were obtained with timesharing 115 V/400 Hz/100 kVA AC output and 270 V/80 kW DC output based on the same power supply, which verified the rationality and feasibility of the topology and control strategy.

TM 301.2

国家自然科学基金项目(51407189)