| 摘要 |
<p>The present specification relates to a grid-connected photovoltaic inverter and a control method of the same, wherein the inverter detects a load-side unbalanced current and processes the current through P-Q conversion, then extracts only a ripple value and calculates a compensation current, and compensates for the reference current of a current controller. According to the present specification, the grid-connected photovoltaic inverter is coupled with a load and includes: a voltage controller to perform PI control over a DC link voltage provided by a DC link voltage controller; a current controller to control currents based on d and q reference currents converted from the DC link voltage and based on the compensation current calculated when detecting the unbalance of the load; and a PWM signal generation part to generate a PWM signal based on a voltage converted from the current controller.</p> |
