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低开关频率多相大容量推进系统直接离散电流调节器性能优化

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多相开绕组推进系统受限于大功率开关器件结温以及开关损耗限制,其开关频率低、数字控制延时大,降低了推进系统高转速运行性能.针对上述问题,首先引入了直接离散电流调节器,并将其与传统离散调节器的设计过程及性能进行了理论对比分析;然后,结合建立的十二相开绕组感应电机数学及仿真模型,在转速大范围变化及负载突变等工况下对两种调节器闭环控制性能进行了对比仿真验证,结果表明:直接离散电流调节器的闭环控制性能,尤其在负载突变下明显优于传统的离散调节器;最后,基于三电平十二相开绕组感应电机试验平台验证了理论分析的正确性.该研究结果为低开关频率推进系统闭环控制性能优化提供了一种思路.
Optimization of closed-loop control performance of a low switching frequency multiphase high-capacity induction propulsion system
The multi-phase open-winding propulsion system is limited by the junction temperature of high-power switching devices and switching losses,and its low switching frequency and large digital control delay reduces the performance of the propulsion system in high speed operation.To address the above problems,firstly the direct discrete current regulator was introduced and its design process and performance were comparied with the traditional discrete regulator.Secondly,the mathematical and simulation model of the 12-phase open-winding induction motor were combined,the closed-loop control performance of the two types of regulators was verified by comparing and simulating the two types of regulators under the working conditions of wide range of rotational speed change and sudden change of load.The results show that the closed-loop control performance of the direct discrete cur-rent regulator,especially under sudden load change,is significantly better than that of the traditional discrete regulator.Finally,the correctness of the theoretical analysis is verified based on the three-level 12-phase open-winding induction motor test platform.The findings can provide reference for op-timizing the closed-loop control performance of low switching frequency propulsion system.

multiphase open-winding motorcomplex vector regulatordigital control delaylow switching frequency

郭城、胡亮灯、鲁斌、裘呈熠、龙齐杰

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海军工程大学电磁能技术全国重点实验室,武汉 430033

多相开绕组电机 复矢量调节器 数字控制延时 低开关频率

2024

海军工程大学学报
海军工程大学

海军工程大学学报

CSTPCD北大核心
影响因子:0.34
ISSN:1009-3486
年,卷(期):2024.36(6)