A PWM quadrature-booster phase shifter for ac power transmission

Journal Article · Wed Jan 01 04:00:00 EST 1997 · IEEE Transactions on Power Electronics

DOI:https://doi.org/10.1109/63.554179· OSTI ID:488899

Lopes, L A.C. ^[1]; Joos, G ^[2]; Ooi, B T ^[3]

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1. Federal Univ. of Para, Belem (Brazil)
2. Concordia Univ., Montreal, Quebec (Canada). Dept. of Electrical and Computer Engineering
3. McGill Univ., Montreal, Quebec (Canada). Dept. of Electrical Engineering

The conventional structures used for phase shifters employ quadrature voltage injection controlled by means of on-load tap changers that require considerable maintenance. Line-commutated thyristor structures have been proposed to replace tap changers, but problems related to filter requirements or the number of switches have limited their utilization. This paper proposes a pulse width modulation (PWM) quadrature-booster phase shifter based on a force-commutated ac controller. It offers features such as fast dynamic response, continuous variation of the phase angle with low harmonic injection, and it requires a simple power structure and can be controlled by adjusting the duty cycle of the switches. The operating principles of the proposed phase shifter are analyzed and their feasibility is demonstrated through digital simulation and experimental implementation.

• OSTI ID: 488899
• Journal Information: IEEE Transactions on Power Electronics, Journal Name: IEEE Transactions on Power Electronics Journal Issue: 1 Vol. 12; ISSN ITPEE8; ISSN 0885-8993
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
POWER CONDITIONING CIRCUITS
POWER SYSTEMS
POWER TRANSMISSION
STABILIZATION
VAR CONTROL SYSTEMS