摘要
研究了一种基于反激式的光伏微型逆变器,对传统的功率解耦环节进行改进,引入双向DC/DC变换器为解耦电路,取代传统的电解电容,提高了光伏微型逆变器的寿命预期。该电路只包含两个小容值电容,可使用寿命较长的无极性电容替代大容值电解电容。最后,仿真试验验证了该解耦电路和控制方案的有效性和正确性。
A photovohaic micro-inverter based on flyback inverter was studied. In order to improve the power decoupling link, the bi-directional DC/DC converter was introduced as the decoupling circuit to replace the traditional electrolytic capacitor, which could extend the life expectancy of photovoltaic micro-inverter. The whole inverter contains only two capacitors with small capacitance, thereby allowing the use of non-polar capacitor which has a longer service life-time. The simulation results show that the deeoupling circuit works effectively and the control scheme is correct.
出处
《低压电器》
2012年第11期23-28,共6页
Low Voltage Apparatus
关键词
光伏微型逆变器:电解电容
解耦电路
二次功率扰动
photovoltaic micro-inverter
electrolytic capacitor
decoupling circuit
twice line frequencypower disturbances
