永磁同步电机基于双积分器模型实现的改进离散准谐振控制器设计  

Design of Improved Discrete Quasi Resonant Controllers Implemented With Two Integrators Model for Permanent Magnet Synchronous Motor

作　　者：朱元[1] 肖明康 孟令 陆科 ZHU Yuan;XIAO Mingkang;MENG Ling;LU Ke(School of Automotive Studies,Tongji University,Jiading District,Shanghai 201800,China)

机构地区：[1]同济大学汽车学院,上海市嘉定区201800

出　　处：《中国电机工程学报》2023年第9期3599-3609,共11页Proceedings of the CSEE

摘　　要：因逆变器非线性和电机本体设计缺陷所带来的电流谐波会导致转矩脉动和损耗增加,影响电机控制性能甚至缩短使用寿命。基于双积分模型实现的准谐振控制器能较好地抑制电流谐波,但因积分器采用欧拉离散会带来谐振点的偏移和相位滞后等问题,影响谐波抑制效果。针对此问题,该文改进传统的基于双积分模型实现的准谐振控制器,提出双积分器零极点解耦校正模型,以达到谐振点准确跟踪、控制器稳定裕度高的目的,且计算量较小;为避免因加入准谐振控制器导致电流控制系统失稳,将所提出的改进离散准谐振控制器放入整个电流控制系统中,分析其稳定性并给出控制参数选择依据,并考虑到电流控制系统的采样和更新延迟。最后,通过台架实验对比验证所提出的改进离散准谐振控制器在谐波抑制性能上的有效性。Current harmonics resulting from inverter nonlinearity and motor design defects can cause torque pulsation and increased losses,which can negatively impact the control performance and shorten the motor operation life.The quasi-resonant controller implemented with two integrators is effective in suppressing current harmonics.However,using Euler discretization for the integrators can lead to resonance point offset and phase lag.In order to solve this issue,this paper propose an improved quasi resonant controller with two integrators,using a zero-pole decoupling correction model that accurately tracks resonance poles,offers high stability margins,and minimizes the computational burden.To ensure stability of the current control system with the added quasi resonant controller,it perform a stability analysis and select appropriate control parameters,considering system sample and update delay.Experimental comparisons demonstrate the effectiveness of the proposed improved discrete quasi-resonant controller.

关 键 词：永磁同步电机 谐波抑制 准谐振控制器 双积分器实现 零极点解耦校正模型 

分 类 号：TM32[电气工程—电机]