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Average Current Mode Control of High Voltage DC Power Supply for Pulsed Load Application

Vishwanathan, N and Ramanarayanan, V (2002) Average Current Mode Control of High Voltage DC Power Supply for Pulsed Load Application. In: 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting, 13-18 October, Pennsylvania,USA, Vol.2, 1205 -1211.


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High voltage power supplies with pulse load (125 kHz and 10 % duty cycle) are investigated which are of interest for applications like radar power supplies with an output voltage of 22 kV. The performance specifications with this type of power supplies are very stringent demanding tight regulation (<0.01 %) and high efficiency (>85 %). This paper proposes a methodology to tackle the problems associated with this type of application. A phase-modulated series resonant converter with ZVS is used as the power converter. Average value of the rectified tank current is controlled to regulate the output voltage. Synchronization of converter switching with load pulses enables the converter to switch at half the load switching frequency. Low switching frequency helps in ensuring safety of HV transformer insulation and reduction of losses due to skin & proximity effect. Average current mode control gives excellent dynamic response with simple closed loop design.

Item Type: Conference Paper
Publisher: IEEE
Additional Information: Copyright 1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords: High voltage power supply;Phase-modulated series resonant converter;Average current mode control;Pulse load
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 27 Jan 2006
Last Modified: 19 Sep 2010 04:23
URI: http://eprints.iisc.ac.in/id/eprint/5228

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