2005•The Transactions of the Korean Institute of Power ElectronicsRequires access
Voltage Sag-Swell Generator for Power Quality Disturbance of Dynamic UPS System
Woo-Yeol Byeon, J W Kim, K S Lee, Eui‐Cheol Nho, I D Kim, Tae-Won Chun, H G Kim
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Abstract
This paper describes a new voltage sag-swell generator for the test of custom power devices such as UPS, DVR, DSTATCOM, SSTS, etc. Voltage sag, swell, outage, and unbalance generation mechanism and the operating principle are described for the proposed scheme. The usefulness of the scheme is proved through simulations and experiments. The proposed scheme has good features of simple structure, high reliability, wide range of sag and swell variation, and easy control. Especially, the scheme can provide a cost-effective implementation of a power quality disturbance generator. Therefore, it is expected that the scheme will contribute to the self implementation of the system with low cost in laboratory.