A FAST ACTIVE POWER FILTER TO CORRECT LINE VOLTAGE SAGS
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In this paper an active power filter for compensating voltage sags that occur on a weak ac system is described. The proposed active power filter is especially suitable in situations where sensitive data processing and other critical loads are to be operated on a weak ac system. The proposed filter is fast acting and simple in design. A design procedure based on IEEE/ANSI voltage withstand tolerance (IEEE standard 446-1987) is proposed. Laboratory tests on a prototype filter show fast response and linear correction characteristics. 1994 IEEE. All rights reserved.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
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BHAVARAJU, V. B., & ENJETI, P.
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