A New Reliable Three-Phase Buck-Boost AC–AC Converter
A New Reliable Three-Phase Buck-Boost AC–AC Converter
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DOI：
10.1109/tie.2017.2733439
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发表时间：
2018-02
影响因子：
7.7
通讯作者：
Ashraf Ali Khan;Honnyong Cha;H. Ahmed
中科院分区：
文献类型：
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作者：
Ashraf Ali Khan;Honnyong Cha;H. Ahmed
提出了一种新型双向直接脉宽调制（PWM）三相降压-升压型交-交变换器。它需要六个开关和三个电感器，可以提供宽范围的降压-升压电压操作。由于转换器中没有短路和开路风险，因此具有高可靠性。因此，它在不使用有损缓冲电路、软换向策略和耦合电感的情况下解决了换向问题。它可以设计成金属氧化物半导体场效应晶体管（MOSFET），而其体二极管不导通，从而消除了反向恢复问题和体二极管的损耗。此外，为了减少输入和输出电压和电流的纹波，建议的转换器可以与PWM策略II操作。PWM策略-II是一种交错PWM策略，具有死区和死区时间操作模式。为了验证所提出的转换器的有效性，广泛的分析，然后提供详细的实验结果。
This paper proposes a new bidirectional direct pulse width modulation (PWM) three-phase buck-boost ac–ac converter. It requires six switches and three inductors and can provide wide range buck-boost voltage operation. It has high reliability due to no short-circuit and open-circuit risks in the converter. Therefore, it solves the commutation problem without using lossy snubber circuits, soft commutation strategies, and coupled inductors. It can be designed with metal–oxide–semiconductor field-effect transistors (MOSFETs) without their body diodes conducting, which eliminate reverse recovery issues and losses of body diodes. In addition, to reduce the ripples in input and output voltages and currents, the proposed converter can be operated with a PWM strategy-II. The PWM strategy-II is a type of interleaved PWM strategy with dead- and overlap-times operating modes. To validate the effectiveness of the proposed converter extensive analysis followed by detailed experimental results are provided.