Abstract
A power converting device with a high frequency inverter module compensating a low frequency inverter module is for transmitting a direct current (DC) power to an alternating current load module. The low frequency inverter module is controlled by a low frequency duty ratio. A first inputting end is electrically connected to the DC power, and a first current includes a low-frequency ripple current. The high frequency inverter module is connected to the low frequency inverter module in parallel and controlled by a high frequency duty ratio. A second inputting end is electrically connected to the DC power and outputs a second current. The low frequency inverter module is controlled according to the low frequency duty ratio to generate the first current. The high frequency duty ratio is adjusted according to the low-frequency ripple current. The high frequency inverter module is controlled according to the high frequency duty ratio to generate the second current, and the second current is for compensating ripples of the first current. Therefore, it is favorable for eliminating the low-frequency ripple current and improving the dynamic response.