Lg Innotek Co., Ltd.

Jae Yeop Jung

Soo San Kim

Yong Kim

A converter according to an embodiment of the present invention comprises: a voltage transformer unit which converts the input voltage of input power to a predetermined voltage and outputs same, and a control unit which controls the operating frequency of the voltage transformer unit according to states of the input power.

Phase shifted full-bridge converter

The AC/DC converter according to one embodiment of the present invention comprises: a power unit comprising a plurality of power input lines; a main bridge circuit into which input power is input via the power unit; a relay connected in parallel to both ends of any one of the power input lines; and a control unit for controlling the opening/closing of the relay on the basis of the type of input power.

AC/DC converter

A photovoltaic power generation system according to an embodiment of the present invention comprises: a first converter for converting and outputting power applied from a photovoltaic power generation panel; a second converter for receiving, via a first input/output terminal, the power output by the first converter, converting same, and outputting same via a second input/output terminal, or receiving power from the second input/output terminal, converting same, and outputting same via the first input/output terminal; a third converter for receiving power from the first converter or the second converter and charging an energy storage device, or transmitting power charged in the energy storage device to the second converter; and an active power filter for reducing ripples in the second converter, wherein power stored in the active power filter is transmitted to the first converter.

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Seoul, South Korea

Jae Yeop Jung