感应电机软锁相环矢量控制系统研究
|
摘要
感应电机矢量控制的难点在于电机转速及同步电角度的计算。研究了感应电机矢量控制系统工作原理。通过基于软锁相环方法解算电机转速、角度。通过感应电机磁链模型解算转差转速。利用电磁感应原理使用定子电流和电机参数实现了转差转速计算,克服了转子电流不可测的缺点。模型矢量控制用电角度采用电机转速与转差转速分别积分再求和的方法求得。建立仿真模型,取合适的控制参数对控制环路进行仿真分析,仿真结果表明系统稳定且电机转速及同步电角度计算准确。搭建实验环境测试矢量控制效果,试验结果表明此感应电机矢量控制系统快速、稳定。
The difficulty of inductive motor vector control lies in the calculation of motor speed and synchronous electric angle. The principle of vector control system of induction motor was studied. The motor speed and angle were calculated by using the soft phase locked loop method. The sliding speed was calculated by induction motor flux model. Using the principle of electromagnetic induction, stator current and motor parameters were used to calculate the rotating speed, and the unmeasurable disadvantages of rotor current were overcome. The model vector control power angle was obtained by integrating the motor speed and the sliding speed respectively. The simulation model was established, and the control loop was simulated and analyzed with the appropriate control parameters. The results show that the system is stable and the motor speed and synchronous electric angle are calculated accurately. The experimental results show that the vector control system of the induction motor is fast and stable.
The difficulty of inductive motor vector control lies in the calculation of motor speed and synchronous electric angle. The principle of vector control system of induction motor was studied. The motor speed and angle were calculated by using the soft phase locked loop method. The sliding speed was calculated by induction motor flux model. Using the principle of electromagnetic induction, stator current and motor parameters were used to calculate the rotating speed, and the unmeasurable disadvantages of rotor current were overcome. The model vector control power angle was obtained by integrating the motor speed and the sliding speed respectively. The simulation model was established, and the control loop was simulated and analyzed with the appropriate control parameters. The results show that the system is stable and the motor speed and synchronous electric angle are calculated accurately. The experimental results show that the vector control system of the induction motor is fast and stable.
引文
[1] 张虎,张永昌,夏波,等.基于空间矢量调制的感应电机无速度传感器模型预测磁链控制[J].电工技术学报,2017,32(3):97-104.
[2] 田素立,邢珊珊,赵瑞杰,等.感应电机矢量控制电流环控制器的设计[J].微电机,2015,48(6):72-76.
[3] 缪仲翠,党建武,巨梅,等.基于分数阶滑模观测的感应电机无速度传感器矢量控制[J].电机与控制学报,2018,22(5):84-93.
[4] 田素立,赵瑞杰,李朝锋,等.永磁同步电机角度软锁相环估算方法研究[J].电力系统保护与控制,2017,45(18):108-113.
[5] 赵瑞杰,田素立,代兴华,等.一种利于DSP实现的改进型电网电压软锁相环的研究[J].电力系统保护与控制,2013,41(15):135-141.
[6] 鲁文其,胡育文,梁骄雁,等.永磁同步电机伺服系统抗扰动自适应控制[J].中国电机工程学报,2011,31(3):75-81.
[7] 田素立,赵瑞杰,邢珊珊,等.扰动电压下光伏最大功率跟踪控制器的设计[J].微电机,2016,49(10):63-66+96.
[8] 杨战社,行俊锋,肖杰,等.矢量控制感应电机的参数测定[J].微电机,2015,48(10):75-78.
[2] 田素立,邢珊珊,赵瑞杰,等.感应电机矢量控制电流环控制器的设计[J].微电机,2015,48(6):72-76.
[3] 缪仲翠,党建武,巨梅,等.基于分数阶滑模观测的感应电机无速度传感器矢量控制[J].电机与控制学报,2018,22(5):84-93.
[4] 田素立,赵瑞杰,李朝锋,等.永磁同步电机角度软锁相环估算方法研究[J].电力系统保护与控制,2017,45(18):108-113.
[5] 赵瑞杰,田素立,代兴华,等.一种利于DSP实现的改进型电网电压软锁相环的研究[J].电力系统保护与控制,2013,41(15):135-141.
[6] 鲁文其,胡育文,梁骄雁,等.永磁同步电机伺服系统抗扰动自适应控制[J].中国电机工程学报,2011,31(3):75-81.
[7] 田素立,赵瑞杰,邢珊珊,等.扰动电压下光伏最大功率跟踪控制器的设计[J].微电机,2016,49(10):63-66+96.
[8] 杨战社,行俊锋,肖杰,等.矢量控制感应电机的参数测定[J].微电机,2015,48(10):75-78.