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축전지용 전압형 PWM 컨버터의 전류 제어에 관한 연구
우정인,김춘삼,진해중,허태원 東亞大學校 附設 情報通信硏究所 1997 情報通信硏究所論文誌 Vol.5 No.1
A voltage source PWM converter based on lossless resonator and a source current control system are proposed in this paper. It is proved that steady-state deviation reduces to zero from the transfer function of source current control system, owing to the lossless resonator. The system can be controlled by the feedback control only, because of no need to use a feedforward control in the proposed a source current control system. Therefore, as using lossless resonator, control system can be simply made up. Simulations are described in the case of difference between source current and source current reference.
우정인,고성현,진해중,허태원 東亞大學校 附設 情報通信硏究所 1998 情報通信硏究所論文誌 Vol.6 No.1
This paper presents a novel current control system in order to eliminate the steady state control error for three-phase voltage source PWM converters. A general mathematical model of the converter which is represented as a state-space model is estabblish. The state-space model is used for simulations of the converter with the proposed tracking control system of sinusoidal current. In this system, a novel current control which do not require coordiante transformations using internal principle of PI controller is described. It is iproved that the steady state deviation reduce to zero from the transfer function fo source current control system. Finally, simulations show good source current control characteristics by means of the simplified control algorithm which do not require coordinate transformations.