負荷に応じた動作モード切替によるフライングキャパシタ形DABコンバータの開発;負荷に応じた動作モード切替によるフライングキャパシタ形DABコンバータの開発;Development of Flying Capacitor Dual Active Bridge Converter using Multi-mode Operation depending on Output Power
負荷に応じた動作モード切替によるフライングキャパシタ形DABコンバータの開発;負荷に応じた動作モード切替によるフライングキャパシタ形DABコンバータの開発;Development of Flying Capacitor Dual Active Bridge Converter using Multi-mode Operation depending on Output Power
复制标题
根据输出功率使用多模式操作开发飞跨电容双有源桥转换器
DOI：
10.1541/ieejias.137.760
复制
发表时间：
2017
影响因子：
--
通讯作者：
J. Itoh
中科院分区：
文献类型：
--
作者：
Hayato Higa;J. Itoh
本文提出了一种多模式操作的五电平双有源桥（DAB）转换器使用飞跨电容（FC）拓扑，以实现宽负载范围内的高效率在宽的输出电压范围。FC逆变器在三种类型的操作之间交替：五电平波形操作、方波操作和输入电压一半的方波操作。在多模式操作中，FC逆变器的输出电压波形根据输出功率而改变。通过采用多模式操作，零电压开关（ZVS）在轻负载对输出电压的变化实现。此外，与两电平DAB转换器相比，环流也减少了。因此，所提出的方法提高了效率。实验结果表明，最高效率可达96.4%.在额定电压的75%时，变换器损耗比传统的两电平DAB变换器工作时降低了24.4%。
This paper proposes a multi-mode operation for a five-level dual active bridge (DAB) converter using a flying capacitor (FC) topology in order to achieve a wide-load-range high efficiency over a wide output voltage range. The FC inverter alternates between three types of operations: five-level waveform operation, square wave operation, and operation of square waveform with half of the input voltage. In the multi-mode operation, the output voltage waveforms of the FC inverter are changed depending on the output power. By using multi-mode operation, zero voltage switching (ZVS) is achieved at light load against the change of the output voltage. In addition, the circulating current is also reduced compared to that of a two-level DAB converter. Therefore, the efficiency is improved by the proposed method. The experimental results show that the maximum efficiency is 96.4%. At 75% of the nominal voltage, the converter loss is reduced by 24.4% compared to that in the conventional two-level DAB converter operation.