计及电枢和零序回路电阻压降的可变磁通磁阻电机弱磁控制  

Flux Weakening Control of Variable Flux Reluctance Machine Considering Resistive Voltage Drops in Armature and Zero-Sequence Loop

作　　者：郭佳强 刘旭[1,2] 李珊瑚 Guo Jiaqiang;Liu Xu;Li Shanhu(State Key Laboratory of Reliability and Intelligence of Electrical Equipment,Hebei University of Technology,Tianjin,300130,China;Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province,Hebei University of Technology,Tianjin,300130,China)

机构地区：[1]省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学),天津300130 [2]河北工业大学河北省电磁场与电器可靠性重点实验室,天津300130

出　　处：《电工技术学报》2021年第18期3911-3921,共11页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(52077055,51507045);河北省自然科学基金(E2018202252);河北省“百人计划”(E2016100004)资助项目。

摘　　要：在可变磁通磁阻电机的弱磁控制中,忽略电枢和零序回路上的电阻压降会影响弱磁区内参考电流的计算,这会导致电流环饱和,电机电流不能跟随给定值。在这种情况下,电机在弱磁区的输出功率会受到限制。为了解决此问题,提出一种计及电枢和零序回路电阻压降的弱磁控制方法。首先,该方法基于电压方程以及电压和电流的约束,利用拉格朗日极值法求取弱磁区内考虑电阻压降后的最优电流参考值的公式。其次,利用牛顿拉夫逊迭代法根据当前电机的状态计算出电流参考值。然后,考虑电阻压降后,弱磁区内参考电流的计算准确度得到提高,有利于可变磁通磁阻电机在弱磁区内的稳定运行。最后,通过实验结果验证了该方法的有效性。In the flux-weakening control of VFRM(Variable Flux Reluctance Machine,VFRM),ignoring the resistive voltage drops will influence the calculation of the reference current,which results in current loop saturation and the reference current cannot be followed.In this case,the output power of VFRM in flux-weakening region will be limited.To solve this problem,a flux-weakening control strategy considering the resistive voltage drops in armature and zero-sequence loop is proposed.Firstly,based on the voltage equation of VFRM and the constraints of voltage and current,the equations of the optimal reference current considering the resistive voltage drop was deduced by the Lagrange method.Then,the optimal reference current was calculated by the Newton-Raphson method according to the current state of VFRM.After considering the resistive voltage drop,the calculation accuracy of the reference current is improved,which is conducive to the stable operation of the VFRM in the flux-weakening region.Finally,the effectiveness of the method is verified by the experimental results.

关 键 词：可变磁通磁阻电机 弱磁控制 电阻压降 参考电流 

分 类 号：TM352[电气工程—电机]