摘要
针对电动汽车用内置式永磁同步电机弱磁控制算法中深度弱磁区域电流不可控问题,在便于工程应用的转矩转速二维查表法上进行改进。改进二维查表法是为了应对电压波动而要使用电压多张表的复杂工程量问题,通过对转速进行推导公式比例转换,实现单张表转矩转速二维查表法实现弱磁控制。该方法实现了电机在母线电压波动的情况下在深度弱磁区平稳运行,具有工程量小、易于实现与参数整定等优点。通过建模仿真,对该方法进行验证,实现了预期的成果。
In order to solve the problem of uncontrollable current entering deep weak region in the flux weakening control of interior permanent magnet synchronous motor for electric vehicle,based on the two-dimensional table lookup method of torque speed which was convenient for engineering application.The complex engineering quantity problem was improved that the two-dimensional table lookup method of voltage had to use multiple tables in order to cope with voltage fluctuation.Through the proportional conversion of the speed derivation formula,the two-dimensional table lookup method of single table torque speed could realize magnetic weak control.The method realized the motor to run smoothly in the deep weak field under the condition of bus voltage fluctuation.The method had the advantages of small amount of engineering,easy realization and parameter setting.Through modeling simulation,the control method was verified and the expected results were achieved.
作者
冯雷
张志锋
FENG Lei;ZHANG Zhifeng(College of Electrical Engineering,Shenyang University of Technology,Shenyang 110870,China)
出处
《微特电机》
2022年第2期47-51,58,共6页
Small & Special Electrical Machines
基金
国家自然科学基金项目(61603263)。
关键词
内置式永磁同步电机
弱磁控制
查表法
单张表
最大转矩电流比
最大转矩电压比
interior permanent magnet synchronous motor(IPMSM)
flux weakening control
look-up table method
a single table
maximum torque per ampere(MTPA)
maximum torque per voltage(MTPV)
