【摘要】 针对传统永磁同步电机(PMSM)弱磁方法电压指令饱和极易引发系统失控的现象,提出一种包含电压指令补偿环节的前馈/反馈混合式弱磁控制方法。该方法前馈通道设计为转矩/磁链的二维表格,通过当前磁链、转矩指令,直接查取d,q轴电流的期望值,保证了系统的动态响应要求;反馈通道中包含提出的电压指令补偿环节,结合电流控制器输出指令和转速、母线电压信息,调节出前馈通道所需的磁链指令。最后,通过110 kW高速PMSM实验样机进行可行性分析,实验结果验证了所提弱磁控制系统能够满足电动汽车快速动态响应的要求,同时提高了系统高速运行时的可靠性。更多还原

【Abstract】 For traditional permanent magnet synchronous motors(PMSM) low voltage directive saturation can easily trigger a system out of control,A new method is presented including voltage directives link hybrid flux weakening control of feedforward/feedback methods.The feedforward channel design for turned moments/magnetic chain of two dimension form,through current magnetic chain,and turned moments instruction,directly check take d,q current of expectations,guarantee system dynamic response requirements;feedback channel contains chapter proposed voltage instruction compensation links,combines current controller output instruction and speed,and bus voltage information,regulation out needed by magnetic chain instruction feedforward channel.Finally,A 110 kW feasibility analysis of high-speed PMSM prototype is built,the experimental results show that the proposed field-weakening control systems meet the requirements of electric vehicle fast dynamic response,while improving the reliability of the system when running at high speed.更多还原