We present a sensorless efficiency test system with energy recovery for a high-speed permanent magnet synchronous motor(PMSM). In the system, two identical high-speed PMSMs are used as the motor under test(MUT)and the...We present a sensorless efficiency test system with energy recovery for a high-speed permanent magnet synchronous motor(PMSM). In the system, two identical high-speed PMSMs are used as the motor under test(MUT)and the load machine(LM),respectively.A new sensorless vector control(VC) method based on a hypothetical reference frame is presented to control both the MUT and the LM.Also,a regenerating unit is used to implement energy circulation to save energy.Experiments were carried out on a prototype, with a digital controller based on the TMS320 F28335, to verify the adequacy of the sensorless VC method.As a result,the efficiency test system achieves the load test at the speed of 21000 r/min without any reduction equipment. During the test, the energy regenerated by the LM could be fed back to the MUT by the regenerating unit, and 81.31% electrical power was saved.In addition, with the proposed sensorless VC method,both the MUT and the LM can work at i_d = 0 without a position sensor.展开更多
针对高速永磁同步电机(high speed permanent magnet synchronous motor,HS-PMSM)的解耦控制系统,根据逆系统理论分析了其数学模型的可逆性,进一步提出一种基于在线最小二乘支持向量机(online least squares support vector machine,OLS...针对高速永磁同步电机(high speed permanent magnet synchronous motor,HS-PMSM)的解耦控制系统,根据逆系统理论分析了其数学模型的可逆性,进一步提出一种基于在线最小二乘支持向量机(online least squares support vector machine,OLS-SVM)的逆系统方法,实现了HS-PMSM的高性能解耦控制。该方法设计了基于OLS-SVM的实时逆系统,并将其与原系统串联构成一种伪线性系统,实现了HS-PMSM系统的线性化和解耦。同时,在HS-PMSM逆控制系统中为获得高精度定子磁链观测,进一步引入一种基于带通滤波器和参数补偿(band-pass filter with parameter compensator,BPFC)的磁链观测器。通过仿真和实验研究,在宽速范围内转速和电流解耦控制、不同转速域转速跃跟踪和负载抗扰性能等几个方面验证了文中所提出的解耦控制方法的有效性。展开更多
基金supported by the Science and Technology Project of State Grid Corporation, ‘‘Research on Key Technologies of Flexible Control Strategy for Variable Speed Pumped Storage Units’’the Fundamental Research Funds for the Central Universities (No. B18020574)
文摘We present a sensorless efficiency test system with energy recovery for a high-speed permanent magnet synchronous motor(PMSM). In the system, two identical high-speed PMSMs are used as the motor under test(MUT)and the load machine(LM),respectively.A new sensorless vector control(VC) method based on a hypothetical reference frame is presented to control both the MUT and the LM.Also,a regenerating unit is used to implement energy circulation to save energy.Experiments were carried out on a prototype, with a digital controller based on the TMS320 F28335, to verify the adequacy of the sensorless VC method.As a result,the efficiency test system achieves the load test at the speed of 21000 r/min without any reduction equipment. During the test, the energy regenerated by the LM could be fed back to the MUT by the regenerating unit, and 81.31% electrical power was saved.In addition, with the proposed sensorless VC method,both the MUT and the LM can work at i_d = 0 without a position sensor.
文摘针对高速永磁同步电机(high speed permanent magnet synchronous motor,HS-PMSM)的解耦控制系统,根据逆系统理论分析了其数学模型的可逆性,进一步提出一种基于在线最小二乘支持向量机(online least squares support vector machine,OLS-SVM)的逆系统方法,实现了HS-PMSM的高性能解耦控制。该方法设计了基于OLS-SVM的实时逆系统,并将其与原系统串联构成一种伪线性系统,实现了HS-PMSM系统的线性化和解耦。同时,在HS-PMSM逆控制系统中为获得高精度定子磁链观测,进一步引入一种基于带通滤波器和参数补偿(band-pass filter with parameter compensator,BPFC)的磁链观测器。通过仿真和实验研究,在宽速范围内转速和电流解耦控制、不同转速域转速跃跟踪和负载抗扰性能等几个方面验证了文中所提出的解耦控制方法的有效性。
