Current measurements in digitally controlled AC drives

被引：71

作者：

Song, SH ^{[1
]}

Choi, JW

Sul, SK

机构：

[1] Seoul Natl Univ, Sch Elect Engn, Seoul, South Korea

[2] LG Ind Syst, R&D Ctr, Kyonggi Do, South Korea

来源：

IEEE INDUSTRY APPLICATIONS MAGAZINE | 2000年 / 6卷 / 04期

关键词：

D O I：

10.1109/2943.847916

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The current sampling error has been investigated in the field oriented control of an ac machine by a pulse width modulation (PWM) inverter. The expression of the harmonic current due to a low pass filter has been derived analytically form the reference voltage vector in the space vector PWM (SVPWM) strategy. The fundamental components of the current sampling error causes improper torque regulation while the high frequency ripple of the error introduces lower permissible gain of the current regulators with a resultant impairment in dynamic behavior and limited stability range of the control systems. The effectiveness of the delayed sampling was verified through simulations and experimental results including steady state and dynamic response.

引用

页码：51 / 62

页数：12

共 11 条

[1]

BLASKO V, 1997, IEEE APEC C REC, P520

[2] CURRENT CONTROL OF VSI-PWM INVERTERS [J].