| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor control unit and a refrigerator having the same, capable of performing a stable motor control with an inexpensive motor circuit.SOLUTION: A motor control unit includes: a converter part for converting AC voltage of a commercial power supply into DC voltage; and an inverter part for outputting three-phase AC voltage from the DC voltage to rotate a motor. The electric current in d-axis direction is increased, if any one of the following is seen: the motor rotation frequency is equal to or lower than a specified rotation number; the electric power supply voltage is equal to or higher than a specified value; or it is in the specified time when ringing is expected to be generated by the switching of three-phase AC current. |
