Design and Performance of the 850-V 100-kW 16-kHz Bidirectional Isolated DC-DC Converter Using SV-MOSPET/SBD H-Bridge Modules
Design and Performance of the 850-V 100-kW 16-kHz Bidirectional Isolated DC-DC Converter Using SV-MOSPET/SBD H-Bridge Modules
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DOI：
10.1109/tpel.2020.2975256
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发表时间：
2020-10-01
影响因子：
6.7
通讯作者：
Akagi, Hirofumi
中科院分区：
文献类型：
--
作者：
Haneda, Ryo;Akagi, Hirofumi
本文使用最新的 1.2kV 400A SiC-MOSFET/SBD H 桥模块设计、构建和测试 850V 100kW 16kHz 双向隔离式 DC-DC 转换器，重点关注效率提高。这里，SBD代表肖特基势垒二极管。它建议采用连续电流模式 (CCM) 进行间歇操作，以减少部分负载中的开关损耗。实验结果验证，额定功率100kW时，从直流输入到直流输出的转换效率高达99.3%，部分负载10kW时，转换效率高达99.2%。这些都是经过测量和计算的，排除了由数字控制器、栅极驱动电路和冷却风扇产生的总计 82 Win 的辅助功率损耗。实验瞬态波形表明，当以 1 ms 的间隔进行从 -100 到 100 kW 的功率反转时，850 V 100 kW 16 kHz 变压器在连续运行和 CCM 间歇运行之间的切换间隔内不包含直流磁通量。最后，本文对每个桥的直流电容器上出现的电压纹波进行了实验和理论讨论。
This article designs, builds, and tests the 850-V 100-kW 16-kHz bidirectional isolated dc-dc converter using the latest 1.2-kV 400-A SiC-MOSFET/SBD H-bridge modules, with focus on efficiency improvement. Here, SBD stands for Schottky barrier diode. It proposes intermittent operation with continuous-current mode (CCM), to reduce switching losses in partial loads. Experimental results verify that the conversion efficiency from the de input to the dc output is as high as 99.3% at the rated power of 100 kW, and 99.2% at a partial load of 10 kW. These are measured and calculated, discarding auxiliary power losses of 82 Win total, which are produced by the digital controller, gate-drive circuits, and cooling fans. Experimental transient waveforms show that no dc magnetic flux is included in the 850-V 100-kW 16-kHz transformer at intervals of switchover between the continuous operation and the CCM intermittent operation when power reversal from -100 to 100 kW is performed at an interval of 1 ms. Finally, this article presents an experimental and theoretical discussion on the voltage ripples appearing across the dc capacitor of each bridge.