[논문]넓은 출력 전압제어범위를 갖는 3레벨 단상 단일전력단 AC/DC 컨버터

마리우스; 김민지; 오재성; 이강우; 김은수; 황인갑

doi:10.6113/tkpe.2018.23.6.424

넓은 출력 전압제어범위를 갖는 3레벨 단상 단일전력단 AC/DC 컨버터
Three Level Single-Phase Single Stage AC/DC Resonant Converter With A Wide Output Operating Voltage Range 원문보기

전력전자학회 논문지 = The Transactions of the Korean Institute of Power Electronics, v.23 no.6, 2018년, pp.424 - 432

마리우스 (Dept. of Electrical & Electronics Engineering, Jeonju University) , 김민지 (Dept. of Electrical & Electronics Engineering, Jeonju University) , 오재성 (Dept. of Electrical & Electronics Engineering, Jeonju University) , 이강우 (Dept. of Electrical & Electronics Engineering, Jeonju University) , 김은수 (Dept. of Electrical & Electronics Engineering, Jeonju University) , 황인갑 (Dept. of Electrical & Electronics Engineering, Jeonju University)

Abstract ▼ AI-Helper

This study presents a single-phase single-stage three-level AC/DC converter with a wide controllable output voltage. The proposed AC/DC converter is designed to extend the application of e-mobility, such as electric vehicles. The single-stage converter integrates a PFC converter and a three-level DC/DC converter, operates at a fixed frequency, and provides a wide controllable output voltage (approximately 200-430Vdc) with high efficiencies over a wide load range. In addition, the input boost inductors operate in a discontinuous mode to improve the input power factor. The switching devices operate with ZVS, and the converter's THD is small, especially at full load. The feasibility of the proposed converter is verified by the experimental results of a 1.5 kW prototype.

주제어

표/그림 (23)

그림 Fig. 1. The proposed single-phase single-stage 3-level AC/DC converter and its operating waveforms.
그림 Fig. 2. Current flow in mode 1 (t₀∼t₁).
그림 Fig. 3. Current flow in mode 2 (t₁∼t₂).
그림 Fig. 4. Current flow in mode 3 (t₂∼t₃).
그림 Fig. 5. Current flow in mode 4 (t₃∼t₄).
그림 Fig. 6. Current flow in mode 5 (t₄∼t₅).
그림 Fig. 7. Current flow in mode 6 (t₅∼t₆).
그림 Fig. 8. Current flow in mode 7 (t₆∼t₇).
그림 Fig. 9. Current flow in mode 8 (t₇∼t₈).
그림 Fig. 10. Boost inductor’s current waveform.
그림 Fig. 11. Boost inductor’s waveforms in the interval 0≤θ≤∅cr.
그림 Fig. 12. Boost inductor’s waveforms in the interval ∅cr≤θ≤(π-∅cr).
그림 Fig. 13. Voltage gain characteristics [M(L_B, D)] as a function of the boost inductance (L_B) and phase-shift(D) of a single -phase single stage AC/DC converter.
그림 Fig. 14. Equivalent circuit of the resonant tank.
그림 Fig. 15. Voltage gain of the resonant tank.
그림 Fig. 16. VLINK voltage simulation.
표 TABLE I MAIN RATINGS AND TRANSFORMER PARAMETERS
그림 Fig. 17. Experimental wave-forms. (a) the PFC Circuit, (b) the current/ voltage across the transformer's primary and secondary [200V/1.5kW].
그림 Fig. 18. Experimental wave-forms. (a) the PFC Circuit, (b) the current/ voltage across the transformer's primary and secondary [300V/1.5kW].
그림 Fig. 19. Experimental wave-forms. (a) the PFC Circuit, (b) the current/ voltage across the transformer's primary and secondary [430V/1.5kW].
그림 Fig. 20. Measured link voltage (V_LINK) of the designed prototype.
그림 Fig. 21. Efficiency and THD of the proposed single-phase single stage AC/DC converter.
그림 Fig. 22. Setup of the laboratory prototype.

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제안 방법

A 2kW single-phase single stage three level AC/DC converter with a wide output voltage range characteristic was designed and implemented to verify the operation of the proposed converter. The proposed converter is controlled with a program loaded in a 16-bit dsPIC33FJ16GS502 micro-controller that constantly senses the output voltage and current and operates the switching devices with a fixed frequency.
In this paper, a single-phase three level single stage converter that mitigates the aforementioned drawbacks of previously published single stage converters is presented. It is designed to extend the application of electric vehicles to areas where the three phase supply is not accessible and to improves the power density and efficiency of EV charging systems that operate within a wide controllable output voltage range (200V_dc-430V_dc).

대상 데이터

In this paper, a single-phase three level single stage converter that mitigates the aforementioned drawbacks of previously published single stage converters is presented. It is designed to extend the application of electric vehicles to areas where the three phase supply is not accessible and to improves the power density and efficiency of EV charging systems that operate within a wide controllable output voltage range (200V_dc-430V_dc).

참고문헌 (8)

H. Wang, S. Dusmez, A. Khaligh, and S. Member, "A novel approach to design ev battery chargers using SEPIC PFC stage and optimal operating point tracking technique for LLC converter," in IEEE Applied Power Electronics conference and Exposition (APEC), pp. 1683-1689, Mar. 2014.
M. M. U. Alam, W. Eberle, and F. Musavi, "A single-stage bridgeless high efficiency ZVS hybrid-resonant off-road and neighborhood EV battery charger," in IEEE Applied Power Electronics conference and Exposition (APEC), pp. 3237-3242, Mar. 2014.
M. Abbasi and J. Lam, "A new three-phase soft switched bridgeless AC/DC step up converter with current fed voltage doubler module for DC grid in wind systems," in IEEE Applied Power Electronics Conference and Exposition (APEC), pp. 44-51, Mar. 2018.
M. Narinmani and G. Moschopoulos, "A new single-phase single-stage three-level power-factorcorrection AC-DC converter with phase-shift modulation," in IEEE Transactions on Power Electronics, Vol. 60, No. 9, pp. 3731-3735, Sep. 2013.
M. Narinmani and G. Moschopoulos, "A new interleaved three-phase single stage AC-DC converter with flying capacitor," in IEEE Applied Power Electronics conference and Exposition (APEC), pp. 894-899, Mar. 2014.
P. M. Barbosa, F. Canales, J. M. Burdio, and F. C. Lee, "A three level converter and its application to power factor correction," IEEE Transactions on Power Electronics, Vol. 20, No. 6, pp. 1319-1327, Nov. 2005.

상세보기
Y. Gao, W. Cai, and F. Yi, "A single-stage single-phase isolated AC-DC converter based on LLC resonant unit and T-type three-level unit for battery charging applications," in IEEE Applied Power Electronics Conference and Exposition (APEC), pp. 1861-1867, Mar. 2016.
J. Liu , K. W. Chan, C. Y. Chung, N. H. L. Chan, M. Liu, and W. Xu, "Single-stage wireless-power-transfer resonant converter with boost bridgeless power-facto-correction rectifier," IEEE Transactions on Industrial Electronics, Vol. 65, No. 3, pp. 2145-2155, Mar. 2018.

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