采用多绕组高频变压器的新型多电平变换器拓扑及控制策略

发布时间：2018-06-21 10:43

本文选题：H桥级联整流器 + 多绕组高频变压器　；参考：《电工技术学报》2014年10期

【摘要】：提出了一种新型的采用多绕组高频变压器的多电平变换器拓扑。高频变压器与传统的工频变压器相比,在实现隔离的同时可以减小体积和重量。该变换器可以直接实现高压交流-高压交流的变换,也可以实现高压交流-多个低压交流或者直流的变换。通过电路拓扑的改变可以很容易改变输入和输出的电压等级,以适应不同的应用需求。变压器的各个绕组可以通过共同的磁场来实现功率和电压的平衡,不需要额外的功率和电压平衡算法。根据需要,变换器输出可以接不同功率、不同电压等级的负载,应用灵活、容易实现故障冗余。该新型电路拓扑模块化好,控制策略简单,具有很好的应用前景。仿真和实验结果验证了该拓扑及控制策略的可行性。
[Abstract]:A novel multilevel converter topology with multi-winding high-frequency transformer is proposed. Compared with the traditional power frequency transformer, the high frequency transformer can reduce the volume and weight of the transformer. The converter can directly realize the conversion of high voltage AC to high voltage AC, and can also realize high voltage AC to multiple low voltage AC or DC conversion. It is easy to change the input and output voltage levels by changing the circuit topology to meet different application requirements. Each winding of transformer can realize the balance of power and voltage by common magnetic field without the need of additional power and voltage balance algorithm. According to the need, the converter output can be connected with different power, different voltage levels of load, flexible application, easy to achieve fault redundancy. The new circuit has good topology modularization, simple control strategy and good application prospect. Simulation and experimental results verify the feasibility of the topology and control strategy.
【作者单位】：清华大学电力系统及发电设备控制和仿真国家重点实验室;北京理工大学自动化学院;
【分类号】：TM433

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