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A Novel SHMPWM Technique for Sensorless Control in High-Power PMSM

机译：大功率PMSM中无传感器控制的新型SHMPWM技术

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摘要

In view of the low switching frequency restriction of high-power permanent magnet synchronous motor (PMSM) drive system and longing for sensorless control in hostile conditions, a novel PWM control scheme, born out of selective harmonic mitigation pulse width modulation (SHMPWM) technique, was proposed for sensorless control of high-power PMSM. A new enhanced constraint was placed on the traditional SHMPWM nonlinear transcendental equation to selectively generate constant amount of a certain 3k + 1 order harmonic signals while guaranteed that the undesired harmonic signals can be suppressed. At the same time, the 3k + 1 order harmonic signals were extracted by band-pass filter, which had the constant amplitude and phase angle difference of 120 degrees, equivalent to inject rotating voltage vector in the natural coordinate system of motor, and the rotor position can be estimated using the 3k + 1 order harmonic signals. The nonlinear transcendental equation of the novel modulation technique had been designed, and its numerical method had been analyzed. The rotor position observer had been designed according to the 3k + 1 order harmonic signals. Simulation results verify that the harmonic suppression of the system was implemented, and the sensorless control was efficient by the novel SHMPWM technique.
机译：鉴于大功率永磁同步电动机（PMSM）驱动系统的开关频率限制较低，并且渴望在敌对条件下进行无传感器控制，因此，一种新颖的PWM控制方案源于选择性谐波缓解脉冲宽度调制（SHMPWM）技术，被提出用于大功率PMSM的无传感器控制。在传统的SHMPWM非线性超越方程上施加了新的增强约束，以选择性地生成一定量的3k +1阶谐波信号，同时保证可以抑制不希望的谐波信号。同时，通过带通滤波器提取3k +1阶谐波信号，其幅值和相位角差恒定为120度，等效于在电动机和转子的自然坐标系中注入旋转电压矢量可以使用3k + 1阶谐波信号估算位置。设计了新型调制技术的非线性超越方程，并对其数值方法进行了分析。转子位置观测器是根据3k +1次谐波信号设计的。仿真结果验证了系统的谐波抑制已经实现，并且通过新型SHMPWM技术实现了无传感器控制的高效。

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  • 来源
    《Mathematical Problems in Engineering》 |2015年第2期|315898.1-315898.9|共9页
  • 作者

    Yu Yanjun; Gao Lixiao; Liu Yue; Chai Feng; Cheng Shukang;

  • 作者单位

    Harbin Inst Technol, Sch Elect Engn & Automat, Harbin 150001, Peoples R China.;

    Harbin Inst Technol, Sch Elect Engn & Automat, Harbin 150001, Peoples R China.;

    Harbin Inst Technol, Sch Elect Engn & Automat, Harbin 150001, Peoples R China.;

    Harbin Inst Technol, Sch Elect Engn & Automat, Harbin 150001, Peoples R China.;

    Harbin Inst Technol, Sch Elect Engn & Automat, Harbin 150001, Peoples R China.;

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