AC-AC AC-AC CONVERTER FOR DRIVING COMPRESSOR AND REFRIGERATOR HAVING THE SAME

摘要

In the present specification, in a PWM AC-AC converter, a direct communication that can solve the commutation problem due to the dead time and overlap time interval between PWM signals (or switching control signals) Type AC-AC converter. To this end, the AC-AC converter according to an embodiment may be configured to store energy based on the input AC power during a half cycle of the input AC power in converting an input AC power into an output AC power and providing the load to the load. A first coupling inductor for discharging charged energy to the load and a second coupling inductor for storing energy or discharging charged energy to the load during a negative half cycle of the input AC power; An inductor unit including; A first converter connected to the first coupling inductor and controlling energy charged or discharged to the first coupling inductor through a switching operation; A second converter connected to the second coupling inductor and controlling energy charged or discharged to the second coupling inductor through a switching operation; And a control unit controlling a switching operation of the first converter unit and the second converter unit, wherein each of the first coupling inductor and the second coupling inductor includes a magnetically connected first inductor and a second inductor. And the input AC power may be converted into the output AC power based on an energy charging or energy discharging operation of the first coupling inductor and the second coupling inductor.