PWM Technique for Inverter with Sinusoidal Output Current

被引：28

作者：

Fukuda, Shoji ^{[1
]}

Iwaji, Yoshitaka ^{[1
]}

Hasegawa, Hirokazu ^{[1
]}

机构：

[1] Hokkaido Univ, Dept Elect Engn, Kita Ku, North 13,West 8, Sapporo, Hokkaido 060, Japan

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 1990年 / 5卷 / 01期

关键词：

D O I：

10.1109/63.45999

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A sinusoidal pulsewidth modulated (PWM) technique suitable for single-chip microprocessor-based control is described. The proposed scheme can be considered as a digital alternative of the conventional subharmonic method in the sense that on-line real time PWM control is possible and synchronization between carrier wave and signal wave is unnecessary. Furthermore, the scheme features a maximum output voltage that is 15 percent greater. The number of switchings is also 30 percent less than the one obtained by subharmonic modulation method (SHM). A description of the PWM pulse creation principle follows. Most inverter loads have low-pass filter nature. Taking this into account, a performance function (PF), which is the time-integral function of the inverter output voltage, is introduced. An optimal PWM pattern is obtained by minimizing the distortion factor of PF. As the calculation of the optimal pattern needs only three multiplications, it can he executed on-line with a minimum read-only memory (ROM) capacity using a conventional microprocessor. The experiment was carried out with an Intel 8096 CPU. The results demonstrate the validity of the proposed scheme.

引用

页码：54 / 61

页数：8