A Low Cost High Reliability Control Scheme in Parallel Inverters

저가격 고 신뢰성의 병렬 운전 제어 기법

  • 정석언 (이화전기공업(주) 기술연구소)
  • Published : 2007.07.02

Abstract

In this paper, a low cost and high reliability control scheme is proposed for 400Hz UPS system operated in parallel. The proposed control scheme is consisted of two parts which are synchronization and load sharing control. The synchronization control is achieved by discrete logic ICs and analog circuit. The load sharing control is realized by current transformers (CTs) without any controller. Therefore, This proposed control scheme is rather simple and the cost may be decreased, compared with control scheme using expensive controller such as DSP and CAN. The practical feasibility of the proposed control scheme is proved by analysis and simulation.

Keywords