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A single-phase p-type ac–ac converter with reduced components count and high boost factor
International Journal of Circuit Theory and Applications ( IF 1.8 ) Pub Date : 2022-09-11 , DOI: 10.1002/cta.3426
Iman Abdoli 1 , Mostafa Karimi Hajiabadi 1 , Ali Mosallanejad 1 , Alireza Lahooti Eshkevari 1
Affiliation  

This paper proposes a new single-phase direct step-up ac–ac converter by modifying the p-type impedance source. It provides a high boost factor as well as high efficiency, while only six parts are required to design it, involving just two bidirectional power switches. A safe commutation method has been applied to power switches to make the converter snubber-free and high efficient. Input and output harmonic filters are no longer required since input and output currents variate continuously with small ripple and low total harmonic distortion (THD). The proposed topology only modulates the output voltage amplitude, not the phase and frequency, so the output frequency is identical to the input frequency and constant. Thus, it can be utilized in step-up conversion applications, like inductive power transmission from low ac voltage sources. Input and output have the same ground, which is a good protective feature. In this paper, the operating principle of the converter is demonstrated. Experimental results have been represented to evaluate the performance of the converter. For this purpose, an experimental prototype has been fabricated. Results are investigated and compared with other previous step-up ac–ac converters. Results confirm the theory, operating principle, and performance of the converter.

中文翻译:

具有减少的元件数量和高升压因数的单相 p 型 ac-ac 转换器

本文通过修改 p 型阻抗源,提出了一种新型单相直接升压 ac-ac 变换器。它提供高升压系数和高效率,而设计它只需要六个部件,仅涉及两个双向电源开关。电源开关采用安全换流方法,使转换器无缓冲器且高效。不再需要输入和输出谐波滤波器,因为输入和输出电流以小纹波和低总谐波失真 (THD) 连续变化。所提出的拓扑仅调制输出电压幅度,而不调制相位和频率,因此输出频率与输入频率相同且恒定。因此,它可用于升压转换应用,例如来自低压交流电压源的感应电能传输。输入和输出有相同的接地,这是一个很好的保护特性。在本文中,演示了转换器的工作原理。实验结果已被表示以评估转换器的性能。为此,制作了一个实验原型。对结果进行了调查,并将其与其他先前的升压交流 - 交流转换器进行了比较。结果证实了转换器的理论、工作原理和性能。
更新日期:2022-09-11
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