Analysis and Design of aWide-Range Soft-Switching High-Efficiency High-Frequency-Link Inverter With Dual-Phase-Shift Modulation

作者：Guo, Shilin; Su, Jianhui; Lai, Jidong^*; Yu, Xiang

来源：IEEE Transactions on Power Electronics, 2018, 33(9): 7805-7820.

DOI：10.1109/TPEL.2017.2771765

• Active clamper network
• dual-phase-shift (DPS) modulation strategy
• high-frequency-link (HFL) inverter
• transformer-isolated gate drive (TIGD) circuit
• zero voltage switching (ZVS)

A wide-range soft-switching high-efficiency cycloconverter-type high-frequency-link inverter with dual-phase-shift modulation strategy is proposed in this paper. By adding an auxiliary inductor in primary-side full bridge circuit and adopting center-tapped four-winding transformer structure, the soft-switching range for primary-side switches has been extended. The secondary-side active clamper network is designed to recycle leakage inductor energy, and suppress voltage spikes caused by the resonance of the leakage inductor and the parasitic capacitance of switches. One feature of the proposed inverter is that both the primary-side full-bridge and active clamper network employ phase-shift modulation technique where all switches are driven with nearly 50% duty cycle square signals, hence a simple and reliable transformer-isolated gate drive circuit with small transmission delay is presented. Moreover, all switches in the proposed inverter achieve zero voltage switching, which contributes to higher conversion efficiency as well as higher switching frequency. Analysis, design, and implementation of the proposed inverter are discussed in detail. A 200-kHz laboratory prototype for the high-voltage audio amplifier application is developed and the experimental results are presented to validate the analysis and performance of the proposed inverter.

• 出版日期2018-9
• 单位合肥工业大学