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논문 기본 정보

자료유형
학술저널
저자정보
김태훈 (한경대학교) 이우철 (한경대학교)
저널정보
대한전기학회 전기학회논문지 전기학회논문지 제65권 제12호
발행연도
2016.12
수록면
2,000 - 2,007 (8page)

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이 논문의 연구 히스토리 (2)

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Generally, in order to implement the CRM(Critical Conduction Mode), the analog controller is used rather than a digital controller because the control is simple and uses less power. However, according to the semiconductor technology development and various user needs, digital control system based on a DSP is on the rise. Therefore, in this paper, the CRM bridgeless PFC converter based on a digital control is proposed. It is necessary to detect the inductor current when it reaches zero and peak value, for calculating the on time and off time by using the current information. However, in this paper, the on-time and off-time are calculated by using the proposed algorithm without any current information. If the switching-times are calculated through the steady-state analysis of the converter, they do not reflect transient status such as starting-up. Therefore, the calculated frequency is out of range, and the transient current is generated. In order to solve these problems, limitation method of the on-time and off-time is used, and the limitation values are varied according to the voltage reference. In addition, in steady state, depending on the switching frequency, the inductance is varied because of the resonance between the inductor and the parasitic capacitance of the switching elements. In order to solve the problem, inductance are measured depending on the switching frequency. The measured inductance are used to calculate the switching time for preventing the transient current. Simulation and experimental results are presented to verify the proposed method.

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Abstract
1. 서론
2. 본론
3. 시뮬레이션 및 실험
4. 결론
References

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UCI(KEPA) : I410-ECN-0101-2017-560-001890820