Title :
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
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;
Conference_Titel :
Power Electronics Specialists Conference, PESC '94 Record., 25th Annual IEEE
Conference_Location :
Taipei
Print_ISBN :
0-7803-1859-5
DOI :
10.1109/PESC.1994.373877
