A unity power factor PWM rectifier with DC ripple compensation

• Published in: IEEE transactions on industrial electronics (1982) Vol. 44; no. 4; pp. 447 - 455
• Main Authors: Shimizu, T., Fujita, T., Kimura, G., Hirose, J.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.08.1997; Institute of Electrical and Electronics Engineers
• Subjects: Applied sciences; Circuit topology; Electrical engineering. Electrical power engineering; Exact sciences and technology; Power electronics, power supplies; Pulse width modulation; Reactive power; Rectifiers; RLC circuits; Space vector pulse width modulation; Switched capacitor circuits; Switches; Switching circuits; Uninterruptible power systems; Current control; Transient response; Uninteruptible power supply; Control synthesis; Ripple; Power factor regulation; Power supply; Alternative continuous converter; Topology; Pulse duration modulation; Switching
• ISSN: 0278-0046; 1557-9948
• DOI: 10.1109/41.605618

This paper presents a new topology for a pulsewidth modulation (PWM) rectifier which achieves unity power factor on the AC supply side and ripple reduction on the DC output side. The main circuit of this rectifier consists of a conventional PWM rectifier and a pair of additional switches. The switches and PWM rectifier are controlled such that the ripple current on the DC line is reduced, and unity power factor is achieved on the AC line. As a result, this circuit does not require a large DC capacitor or a passive LC resonant circuit. Furthermore, control of the additional switches and PWM rectifier requires only a simple control circuit. The effectiveness of this circuit was confirmed by experiments and analysis. The rectifier is useful for uninterruptible power systems (UPSs) and DC power supplies, especially for cases in which batteries are connected to the DC line.