Optimal Pulsewidth Modulation for Current Source Inverters
Optimal Pulsewidth Modulation for Current Source Inverters
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DOI：
10.1109/tia.1986.4504837
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发表时间：
1986-11
影响因子：
4.4
通讯作者：
C. Namuduri;P. Sen
中科院分区：
文献类型：
--
作者：
C. Namuduri;P. Sen
介绍了电流型逆变器的两种不同的脉宽调制方案。第一个是基于离线优化的个别开关角，并需要一个微处理器的实施和第二个使用一个特殊的分谐波调制，并可以实现模拟和中等规模集成（MSI）的数字电路。当CSI用于交流电机驱动时，最佳PWM模式取决于所使用的性能标准，而性能标准又取决于驱动应用。本文考虑了四种不同的性能标准：1）电流或转矩谐波消除，2）电流谐波最小化，3）速度涟漪最小化，和4）位置误差最小化。作为一个例子，自控同步电动机（SCSM）提供的PWM CSI被认为是。本文提出的最佳PWM方案的CSI-SCSM的性能进行了比较，使用传统的120°准方波电流。
Two different pulsewidth modulation (PWM) schemes for current source inverters (CSI) are described. The first one is based on off-line optimization of individual switching angles and requires a microprocessor for implementation and the second one uses a special subharmonic modulation and could be implemented with analog and medium-scale integration (MSI) digital circuits. When CSI's are used in ac motor drives, the optimal PWM pattern depends on the performance criteria being used, which in turn depend on the drive application. In this paper four different performance criteria are considered: 1) current or torque harmonic elimination, 2) current harmonic minimization, 3) speed ripple minimization, and 4) position error minimization. As an example a self-controlled synchronous motor (SCSM) supplied by the PWM CSI is considered. The performance of the CSI-SCSM with the optimal PWM schemes proposed herein are compared with that using a conventional 120° quasi-square wave current.