IMPLEMENTATION OF DISCRETE-TIME FIELD-ORIENTED CURRENT CONTROL

被引:5
作者
SEPE, RB [1 ]
LANG, JH [1 ]
机构
[1] MIT,DEPT ELECT ENGN & COMP SCI,ELECTROMAGNET & ELECTR SYST LAB,CAMBRIDGE,MA 02139
关键词
AC motors - Algorithms - Digital control systems - Discrete time control systems - Electric control equipment - Electric filters - Electric inverters - Electric power utilization - Harmonic generation - Performance - Pulse width modulation - Real time systems;
D O I
10.1109/28.293722
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This paper studies performance sensitive issues encountered in the implementation of all-digital discrete-time field oriented current control of an ac motor. In particular, the focus here is on the interface between the vector current control algorithm itself, and the motor/inverter system. The effects of interface components such as antialiasing filters, rotational transformations, and phase-to-line-voltage transformations are analyzed. In addition, a straightforward all-digital pulse width modulator is presented along with a new algorithm to naturally inject triplen harmonics into the motor line voltages, and thereby increase power supply utilization by 15%. Real-time operation of a discrete-time vector current controller verifies the analysis.
引用
收藏
页码:723 / 728
页数:6
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