五相电压源逆变器最近四矢量最小谐波电压调制方法

发布时间：2019-03-16 17:10

【摘要】：为了优化五相电压源逆变器(voltage source inverter,VSI)空间矢量调制的输出电压,降低输出电压的谐波分量,减少在五相电机所产生的谐波电流,降低电机运行噪声,提出一种谐波电压最小的最近四矢量五相空间矢量调制算法。通过引入合成基本矢量的方法,在三次谐波子平面对谐波电压进行数学分析,得到了最小谐波电压的调制算法。在最近四矢量的正弦调制区,选取合适的合成基本矢量,可使相电压谐波成分抑制为零;在非正弦过调制区,通过谐波最优解来求出空间矢量所在扇区的两合成基本矢量的大小,实现最小谐波的空间调制算法。通过仿真和实验,同两矢量和改进四矢量调制算法进行比较,仿真和实验结果验证了所提出方法的正确性和可行性。
[Abstract]:In order to optimize the output voltage of the five-phase voltage source inverter (voltage source inverter,VSI) space vector modulation, reduce the harmonic component of the output voltage, reduce the harmonic current generated in the five-phase motor, and reduce the operating noise of the motor. A nearest four-vector five-phase space vector modulation algorithm with minimum harmonic voltage is proposed. By introducing the method of synthesizing basic vectors, the modulation algorithm of the minimum harmonic voltage is obtained by the mathematical analysis of harmonic voltage in the harmonic plane of the third harmonic wave. In the sinusoidal modulation region of the last four vectors, the phase voltage harmonic component can be suppressed to zero by selecting the appropriate synthetic basic vector. In the non-sinusoidal over-modulation region, the size of the two synthetic basic vectors of the sector in which the space vector is located is obtained by the harmonic optimal solution, and the spatial modulation algorithm of the minimum harmonic is realized. Simulation and experiment show that the proposed method is correct and feasible by comparing it with two vectors and improved four vector modulation algorithm.
【作者单位】：哈尔滨工业大学电气工程及自动化学院;
【基金】：高等学校博士学科点专项科研基金(20132302120005)~~
【分类号】：TM464

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