High-voltage input and low-voltage output power supply for modular multi-level converter
High-voltage input and low-voltage output power supply for modular multi-level converter
复制标题
用于模块化多电平变换器的高压输入和低压输出电源
DOI：
10.1109/itec-ap.2016.7512940
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Yun Hyeok
中科院分区：
文献类型：
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作者：
Yun Hyeok
模块化多电平变换器（MMC）由许多子模块（SM）组成。每个SM都需要一个电源来驱动绝缘栅双极晶体管（IGBT）并控制功率。MMC系统的功率为100 MW，直流链路电压为250 kV，共有125个SM。这意味着每个SM具有2kV的额定输入电压。这种高输入电压应通过电源转换为低负载电压。由于输入电压较高，在电源设计中应考虑电压平衡技术和选择适当的拓扑结构。电源设计中最常见和流行的方法是输入串联输出并联（ISOP）方法。本文采用基于共占空比控制的ISOP双管反激变换器。如果所有转换器都完全相等，则共占空比控制保证电压平衡。然而，在真实的应用中，DC/DC转换器是不相同的。在瞬态和空载时的不平衡是严重的。为了减少这种电压不平衡的瞬态和空载，一些技术来平衡输入串联电压的介绍。最后，为了测试电源上的快速输入电压变化，提出并实现了高压直流发生器。所有提出的技术和拓扑结构进行了分析和实验结果验证。
A modular multi-level converter (MMC) is composed of many sub-modules (SMs). Each SM needs a power supply to drive insulated-gate bipolar transistor (IGBT) and control power. The MMC system has a power of 100MW, a dc link voltage of 250kV, and a total of 125 SMs. This means that each SM has a rated input voltage of 2kV. This high input voltage should be converted to low load voltage by the power supply. Because of the high input voltage, voltage balancing techniques and the selection of an appropriate topology should be considered in the design of the power supply. The most common and popular approach in the design of the power supply is the input-series output-parallel (ISOP) method. In this paper, ISOP two-transistor flyback converters based on common-duty control are used. If all the converters are exactly equal, common-duty control guarantees the voltage balancing. However, in a real application, the DC/DC converters are not identical. Unbalancing in the transient state and no-load is severe. To reduce this voltage unbalance in the transient state and no-load, some techniques to balance the input-series voltage are introduced. Finally, to test the rapid input voltage change on the power supply, a high-voltage DC generator is proposed and implemented. All of the proposed techniques and topologies are analyzed and verified by experimental results.
具有高频变压器链路的直流轨侧串联开关和并联电容器缓冲器辅助边沿谐振软开关 PWM DC-DC 转换器
DOI：
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发表时间：
2007
期刊：
KIPE, Journal of Power Electronics Vol.7 No.3
影响因子：
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作者：
Keiki;Morimoto;Khairy;Fathy;Hiroyuki;Ogiwara;Hyun;Woo Lee;Mutsuo;Nakaoka
通讯作者：
Nakaoka