A PWM quadrature booster phase-shifter for FACTS

Journal Article · Tue Oct 01 00:00:00 EDT 1996 · IEEE Transactions on Power Delivery

DOI:https://doi.org/10.1109/61.544287· OSTI ID:422790

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

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1. McGill Univ., Montreal, Quebec (Canada). Dept. of Electrical Engineering
2. Concordia Univ., Montreal, Quebec (Canada). Dept. of Electrical and Computer Engineering

This paper presents a static phase-shifter based on a parallel connection of modules of a non-conventional PWM ac-ac converter. Conduction losses are kept low by using only one active power conversion stage where the average number of switches through which the current flows is small. Filtering losses are also expected to be low because of the high order and small magnitude of the harmonics generated by switching. This is obtained by operating the modules with symmetrically phase shifted carriers to provide harmonic cancellation. Thus, even with the switches operating at low frequencies to keep the switching losses low, a high equivalent switching frequency is achieved. The performance of the phase-shifter for damping power oscillations in open loop is also evaluated.

• OSTI ID: 422790
• Report Number(s): CONF-960111--
• Journal Information: IEEE Transactions on Power Delivery, Journal Name: IEEE Transactions on Power Delivery Journal Issue: 4 Vol. 11; ISSN 0885-8977; ISSN ITPDE5
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
AC SYSTEMS
CAPACITORS
INTERCONNECTED POWER SYSTEMS
POWER CONDITIONING CIRCUITS
POWER FACTOR
POWER LOSSES
VAR CONTROL SYSTEMS