Improved Trans-Z-Source Inverter With Continuous Input Current and Boost Inversion Capability
Improved Trans-Z-Source Inverter With Continuous Input Current and Boost Inversion Capability
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DOI：
10.1109/tpel.2012.2233758
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发表时间：
2013-01
影响因子：
6.7
通讯作者：
Minh‐Khai Nguyen;Y. Lim;Sung‐Jun Park
中科院分区：
文献类型：
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作者：
Minh‐Khai Nguyen;Y. Lim;Sung‐Jun Park
本文介绍了一种新型的高升压逆变器，它改进了传统的跨Z源和跨准Z源逆变器。改进的跨Z源逆变器提供连续的输入电流和更高的升压逆变能力。此外，改进的逆变器可以抑制启动时的谐振电流，这可能会破坏设备。与传统的跨Z源/跨准Z源逆变器相比，在相同的Transformer匝数比和输入输出电压下，改进的逆变器具有更高的调制指数，降低了直流环节的电压应力，降低了Transformer绕组和二极管上的电流应力，降低了输入电流涟漪。为了产生具有相同调制指数的相同输入和输出电压，与传统逆变器相比，改进的逆变器使用较低的Transformer匝数比。因此，改进的逆变器中的Transformer的尺寸和重量可以减小。本文介绍了该逆变器的工作原理、分析和仿真结果，并与传统的跨Z源/准Z源逆变器进行了比较。为了验证改进的转换器的性能，实验室原型构建的基础上，TMS 320 F2812数字信号处理器与100 Vdc输入和115 Vrms输出电压。
This paper deals with a new family of high boost voltage inverters that improve upon the conventional trans-Z-source and trans-quasi-Z-source inverters. The improved trans-Z-source inverter provides continuous input current and a higher boost voltage inversion capability. In addition, the improved inverter can suppress resonant current at startup, which might destroy the device. In comparison to the conventional trans-Z-source/-trans-quasi-Z-source inverters, for the same transformer turn ratio and input and output voltages, the improved inverter has a higher modulation index with reduced voltage stress on the dc link, lower current stress flow on the transformer windings and diode, and lower input current ripple. In order to produce the same input and output voltage with the same modulation index, the improved inverter uses a lower transformer turn ratio compared to the conventional inverters. Thus, the size and weight of the transformer in the improved inverter can be reduced. This paper presents the operating principles, analysis and simulation results, and compares them with those of the conventional trans-Z-source/-quasi-Z-source inverters. To verify the performance of the improved converter, a laboratory prototype was constructed based on a TMS320F2812 digital signal processor with 100 Vdc input and 115 Vrms output voltage.