• The Transactions of the Korean Institute of Power Electronics
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• v.23 no.1
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• pp.32-39
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• 2018

A new dc link voltage controller for a three-phase Vienna rectifier is proposed in this study. This method uses load current and duty information to control dc link voltage. The load current affects the capacitor current and varies the output voltage. Existing methods do not perfectly consider the load current. By considering load current with duty compensation in the proposed method, the transient response is improved by the load variation regardless of the input voltage. The effectiveness of the proposed method is compared with other control methods when the load changes rapidly using PSIM simulation and experiment.

• The Transactions of the Korean Institute of Power Electronics
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• v.22 no.6
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• pp.527-534
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• 2017

This paper proposes a new DC link voltage controller for a single-phase power factor correction (PFC) boost converter. The load current of the PFC boost converter affects the capacitor current, whereas the load current changes the output voltage. However, previous works that compensate output current have failed to consider the relationship between load current and duty. Thus, they also fail to maintain a constant output voltage if the load fluctuates under the conditions of a non-rated input voltage. By considering the duty in the load current compensation, the proposed method improves the load transient response regardless of the input voltage. To demonstrate its effectiveness, the proposed method is compared with other control methods by conducting PSM simulations and experiments under a rapidly changing load.

• Proceedings of the KIPE Conference
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• 2017.07a
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• pp.160-161
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• 2017

기존의 단상 PFC(Power Factor Correction) 부스트 컨버터의 제어기는 부하전류와 듀티를 고려하지 않아 부하 변동시 출력전압을 일정하게 유지할 수 없다. 본 논문에서는 부하전류와 듀티를 보상하는 단상 PFC 부스트 컨버터 전압제어기 설계 방법을 제안한다. 인덕터 전류와 캐패시터 전류의 관계를 해석하여 제어기를 설계하고 모의 해석을 통해 입증한다.