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Module-Type Switching Rectifier for Cathodic Protection of Underground and Maritime Metallic Constructions  

문상호 (부경대 대학원)
김보경 (부경대 대학원)
김인동 (부경대 전기제어계측공학부)
노의철 (부경대 전기제어계측공학부)
권영원 (KT전기㈜ 기술연구소)
정성우 (KT전기㈜ 기술연구소)
임헌호 (KT전기㈜ 기술연구소)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.7, no.6, 2002 , pp. 570-578 More about this Journal
Abstract
Cathodic protection is widely used to prevent corrosion of steel materials buried in the underground and sea. As a rectifier for cathodic protection, the conventional phase-controlled rectifiers have been used so far in spite of such shortcomings as large volume, heavy weight and floor power factor. In order to overcome such disadvantages, this paper proposes a new module-type switching rectifier for cathodic protection, which is composed of two parts, namely, AC/DC converter and module- type DC/DC converter. The AC/DC converter is a single-phase IGBT PWM rectifier, thus resulting in almost unity power factor and controlled DC output voltage. The module-type DC/DC converter operates under ZVS/ZCS switching condition to permit high frequency switching operation. It enables to use high-frequency transformer for electrical isolation, thus reducing volume and weight of overall system and improving system efficiency. It should be anticipated that the proposed rectifier techniques apply to the similar technical areas.
Keywords
Cathodic protection; Switching rectifier; AC/DC converter; DC/DC converter;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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