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A voltage‐source PWM rectifier‐inverter with feedforward control of instantaneous power
Author(s) -
Ogasawara Satoshi,
Yamagishi Naoyuki,
Totsuka Hiroyuki,
Akagi Hirofumi
Publication year - 1993
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.4391130411
Subject(s) - power factor , pwm rectifier , rectifier (neural networks) , peak inverse voltage , feed forward , control theory (sociology) , harmonics , voltage source , pulse width modulation , capacitor , precision rectifier , inverter , ac power , voltage optimisation , transient (computer programming) , engineering , voltage , electrical engineering , computer science , control (management) , stochastic neural network , machine learning , control engineering , artificial intelligence , recurrent neural network , artificial neural network , operating system
In general, diode rectifiers with electrolytic capacitors on the dc side have been used as dc power supplies for voltage‐source inverters. Rectifiers of this type, however, cause many problems such as poor power factor and harmonics. Recently, voltage‐source PWM rectifier‐inverters have been studied to provide the following advantages: (1) harmonic‐free on both ac sides; (2) unity power factor on the input ac side; (3) power flow of either direction or power regeneration; (4) reduction of the dc capacitor. However, it is difficult for a conventional voltage‐source PWM rectifier‐inverter to regulate the capacitor voltage on transient states because it has only a voltage feedback loop. This paper describes a voltage‐source PWM rectifier‐inverter with feedforward control of instantaneous power. Based on the pq theory, the instantaneous power which is calculated in the control circuit of the inverter is fed forward to the control circuit of the rectifier. The feedforward control of instantaneous power contributes greatly to sufficiently suppress voltage fluctuation of the dc capacitor on transient states. Transient characteristics are discussed, and some interesting experimental results of a laboratory model are shown.