五相开绕组电机起动阶段电流控制策略研究  

Research on Current Control Strategy of Five-phase Open-winding Motors during Starting

作　　者：郑再平 李琪琦 李旭阳 王开春[1] 杨斌[1] ZHENG Zaiping;LI Qiqi;LI Xuyang;WANG Kaichun;YANG Bin(Beijing Institute of Precise Mechatronics and Controls,Beijing 100076,China)

机构地区：[1]北京精密机电控制设备研究所,北京100076

出　　处：《微电机》2021年第1期57-62,67,共7页Micromotors

摘　　要：基于运载火箭起动/发电一体化系统高可靠性、高功率密度的需求,针对起动时间短、起动负载大的特点,对不增加铜损且使得相电流幅值最小的三次谐波电流注入率的计算方法开展研究。首先,建立五相开绕组永磁同步电机的数学模型,推导三次谐波电流注入率的解析模型。然后,搭建仿真模型,初步验证以相电流幅值最小为目标的三次谐波电流注入率计算结果的正确性。最终,在原理样机上进行了实验,在负载转矩同为40 Nm的情况下,将相电流幅值从31.5 A降到27 A,降低了14.28%。实验结果与仿真结果基本一致,进一步证明了注入率的正确性。The calculation method of the injection rate of the third harmonic current that does not increase the copper loss and minimizes the phase current amplitude was studied,based on the requirements of high reliability and high power density of the integrated starter/generator system of the launcher,and aimed on the characteristics of short start time and large start load.First,a mathematical model of a five-phase open-winding permanent magnet synchronous motor was established,and an analytical model of the injection rate of the third harmonic current was derived.Then,a simulation model was built to preliminarily verify the correctness of the calculation result of the injection rate of the third harmonic current with the smallest phase current amplitude as the target.Finally,experiments were carried out based on the principle prototype.When the load torque is also 40Nm,the third harmonic current was injected with an injection rate of 0.18,which reduced the phase current amplitude from 31.5A to 27A,a decrease of 14.28%.The experimental results and simulation results are basically consistent,which further proves the correctness of the calculation method.

关 键 词：起动/发电一体化系统 五相开绕组永磁同步电机 三次谐波电流注入 相电流幅值最小 

分 类 号：TM351[电气工程—电机] TP273[自动化与计算机技术—检测技术与自动化装置]