Analyses and implementation of a UPS inverter with instantaneous feedback control and harmonic injection

Author

Kang, Yong ; Zhang, Qin ; Chen, Jian

Author_Institution

Huazhong Univ. of Sci. & Technol., Hubei, China

fYear

1994

fDate

20-25 Jun 1994

Firstpage

1462

Abstract

The effect of instantaneous feedback of output voltage on the phase angle of an uninterruptible power supply PWM inverter modulating waveform is analysed. A compromised scheme to inject the third-order harmonic into the modulating waveform aimed to achieve a better voltage utilization is proposed. Computer simulation and experimental results show the good agreement of analyses and experiment

Keywords

DC-AC power convertors; PWM invertors; circuit analysis computing; control system analysis computing; digital simulation; feedback; phase control; power engineering computing; power system harmonics; uninterruptible power supplies; voltage control; PWM inverter; computer simulation; harmonic injection; instantaneous feedback; modulating waveform; output voltage control; phase angle control; third-order harmonic; uninterruptible power supply; voltage utilization; Circuits; Control systems; Feedback control; Output feedback; Phase modulation; Power harmonic filters; Pulse width modulation; Pulse width modulation inverters; Uninterruptible power systems; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, PESC '94 Record., 25th Annual IEEE

Conference_Location

Taipei

Print_ISBN

0-7803-1859-5

Type

conf

DOI

10.1109/PESC.1994.373877

Filename

373877