In this paper, a new conceptual circuit configuration of a 3-phase voltage source, soft switching AC-DC-AC converter using an IGBT module, which has one ARCPL circuit and one ARDCL circuit, is presented. In actuality, the ARCPL circuit is applied in the 3-phase voltage source rectifier side, and the...
In this paper, a new conceptual circuit configuration of a 3-phase voltage source, soft switching AC-DC-AC converter using an IGBT module, which has one ARCPL circuit and one ARDCL circuit, is presented. In actuality, the ARCPL circuit is applied in the 3-phase voltage source rectifier side, and the ARDCL circuit is in the inverter side. And more, each power semiconductor device has a novel clamp snubber circuit, which can save the power semiconductor device from voltage and current across each power device. The proposed soft switching circuits have only two active power semiconductor devices. These ARCPL and ARDCL circuits consist of fewer parts than the conventional soft switching circuit. Furthermore, the proposed 3-phase voltage source soft switching AC-DC-AC power conversion system needs no additional sensor for complete soft switching as compared with the conventional 3-phase voltage source AC-DC-AC power conversion system. In addition to this, these soft switching circuits operate only once in one sampling term. Therefore, the power conversion efficiency of the proposed AC-DC-AC converter system will get higher than a conventional soft switching converter system because of the reduced ARCPL and ARDCL circuit losses. The operation timing and terms for ARDCL and ARCPL circuits are calculated and controlled by the smoothing DC capacitor voltage and the output AC current. Using this control, the loss of the soft switching circuits are reduced owing to reduced resonant inductor current in ARCPL and ARDCL circuits as compared with the conventional controlled soft switching power conversion system. The operating performances of proposed soft switching AC-DC-AC converter treated here are evaluated on the basis of experimental results in a 50kVA setup in this paper. As a result of experiment on the 50kVA system, it was confirmed that the proposed circuit could reduce conduction noise below 10 MHz and improve the conversion efficiency from 88. 5% to 90.5%, when compared with the hard switching circuit.
In this paper, a new conceptual circuit configuration of a 3-phase voltage source, soft switching AC-DC-AC converter using an IGBT module, which has one ARCPL circuit and one ARDCL circuit, is presented. In actuality, the ARCPL circuit is applied in the 3-phase voltage source rectifier side, and the ARDCL circuit is in the inverter side. And more, each power semiconductor device has a novel clamp snubber circuit, which can save the power semiconductor device from voltage and current across each power device. The proposed soft switching circuits have only two active power semiconductor devices. These ARCPL and ARDCL circuits consist of fewer parts than the conventional soft switching circuit. Furthermore, the proposed 3-phase voltage source soft switching AC-DC-AC power conversion system needs no additional sensor for complete soft switching as compared with the conventional 3-phase voltage source AC-DC-AC power conversion system. In addition to this, these soft switching circuits operate only once in one sampling term. Therefore, the power conversion efficiency of the proposed AC-DC-AC converter system will get higher than a conventional soft switching converter system because of the reduced ARCPL and ARDCL circuit losses. The operation timing and terms for ARDCL and ARCPL circuits are calculated and controlled by the smoothing DC capacitor voltage and the output AC current. Using this control, the loss of the soft switching circuits are reduced owing to reduced resonant inductor current in ARCPL and ARDCL circuits as compared with the conventional controlled soft switching power conversion system. The operating performances of proposed soft switching AC-DC-AC converter treated here are evaluated on the basis of experimental results in a 50kVA setup in this paper. As a result of experiment on the 50kVA system, it was confirmed that the proposed circuit could reduce conduction noise below 10 MHz and improve the conversion efficiency from 88. 5% to 90.5%, when compared with the hard switching circuit.
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제안 방법
In this paper, a new conceptual circuit configuration of a 3-phase voltage source soft switching AC-DC-AC converter using IGBT mod나le, which has one ARCPL circuit and one ARDCL circuit, is presented. In actuality, the ARCPL circuit is applied on the 3-phase voltage source rectifier side, and ARDCL circuit is on the inverter side.
So, in case of turn off transition, there is the surge because of the leakage inductance and the capacitance of the active power semiconductor devices. To solve this problem, the proposed 3-phase AC-DC-AC soft switching power conversion system must adopt the Trench-Gate IGBT, which has less leakage inductance than the conventional one and the improved smoothing DC capacitor, which also has less leakage inductance.
성능/효과
It was proven from the feasible experimental results that the complete soft switching operation in all the switching power semiconductor devices, IGBTs in both inverters and rectifiers. And more, 1.8% improvement in efficiency, lower noise, and 5dB saved in RFI noise is confirmed with the soft switching scheme. In addition to this, the loss of main circuit power semiconductor devices will reduce over half the value in case of soft switching method from power loss analysis.
In addition to this, these soft switching circuits operate only once in one sampling term. Therefore, the power conversion efficiency of the proposed AC-DC-AC converter system will get higher than a conventional soft switching converter system because of the reduced ARCPL and ARDCL circuit losses. The operation timing and terms for ARDCL and ARCPL circuits are calculated and controlled by the smoothing DC capacitor voltage and the output AC current.
참고문헌 (6)
Shinichiro Nagai, Shinji Sato, Masayoshi Yamamoto, Mutsuo Nakaoka: 'Noise Evaluation, Two Switch Resonant DC Link-Assisted Double Converter System and Commutation Control to Improve Loss.' Proceedings of Industrial Electronics Society(IES). Industrial Electronics Conference-2002
Shinji Sato,Yutaka, Suehiro,Shin-ichiro Nagai,Koichi Moritai: 'High Efficiency Soft-Switching 3-phase PWM Rectifier' Proceedings of IEEE. International Telecommunication Energy Conference-2000, 25-1, pp.453-460
Luigi Malesani,Paolo Tenti: 'High Efficiency Quasi-Resonant DC Link Three-Phase Power Inverter for Full-Range PWM' IEEE Trans. on Ind. Appl., Vol.31, No.1,pp.141-147, 1995
Yong C.Jung,Jung G.Cho and Gyu H Cho: 'A New Zero Voltage Switching Resonant DC-Link Inverter with Low Voltage Stress', IEEE-IECON,pp.308-313, 1991
R.W.De Doncker 'The Auxiliary Resonant Commuttated Pole Converter', IEEE IAS Annual Meeting Records, pp.829-834 , Oct.1989
M.Yoshida, E.Hiraki, M.Nakaoka,: 'Operating Evaluations of Three-Phase Voltage Source Soft Switching Inverter with A Single Commutation Type Resonant AC Link Snubber' Proceedings of IEE-Japan International Power Electronics Conference (IPEC)-Tokyo 2000, Vol.4, pp.1755-1759, April,2000
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