A single-phase power conditioner with a buck-boost-type power decoupling circuit
A single-phase power conditioner with a buck-boost-type power decoupling circuit
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DOI：
10.1541/ieejjia.5.191
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发表时间：
2014-05
期刊：
影响因子：
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通讯作者：
Shota Yamaguchi;Toshihisa Shimizu
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文献类型：
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作者：
Shota Yamaguchi;Toshihisa Shimizu
本文提出了一种适用于光伏发电的具有降压-升压型功率解耦功能的新型单相逆变器。所提出的降压-升压型功率去耦电路能够降低 PWM 逆变器直流总线上的峰值电压。这使得能够使用具有较低额定电压的开关器件，并且可以减少由此产生的PWM逆变器的开关损耗和传导损耗。该逆变器的另一个特点是采用了基于单相p-q理论的功率解耦控制方法。所提出的控制方法在直流输入部分提供低纹波电流，并且能够使用小型长寿命电容器（例如薄膜电容器）来代替电电容器。通过 1 kW 设置的实验验证了所提出系统的有效性。
This paper presents a novel single-phase inverter with a buck-boost-type power decoupling function suitable for PV generation. The proposed buck-boost-type power decoupling circuit enables the reduction of the peak voltage at the DC bus of the PWM inverter. This enables the use of switching devices with lower voltage ratings, and the resultant switching loss and conduction loss of the PWM inverter can be reduced. Another feature of the inverter is that a power decoupling control method based on single-phase p-q theory is applied. The proposed control method provides a low ripple current at the DC input portion, and it enables the use of small long-life capacitors such as film capacitors instead of electric capacitors. The effectiveness of the proposed system is verified by experiment with a 1 kW setup.