To provide a motor drive control device capable of suppressing generation of a harmonic current without causing cost increases or upsizing, and to provide a compressor, air blower, air conditioner, and refrigerator or freezer, using the same.
The motor drive control device comprises: a three-phase rectifier 2; a step-up converter 3; switching control means 10; a smoothing capacitor 7; an inverter circuit 12; inverter drive means 14; a bus bar current detector 8; an output voltage detector 9; a motor current detector 13 for detecting an electric current running through a motor; and unbalanced component detector 19 for detecting unbalancing of the motor based on an output of a motor current detector 13. The switching control means 10 determines an output voltage command value of the step-up converter 3, a bus bar current command value, and an on-duty of a switching element 5. The inverter drive means 14 controls so that an electric current running through each phase of the motor is balanced.
SAKANOBE KAZUNORI
YAMADA TOMOO
SASAMOTO YOSUKE
ARISAWA KOICHI
HATAKEYAMA KAZUNORI
KISHIWADA YU
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安島 清
小林 久夫
小河 卓
山東 元希
村田 健誠
横井 堅太郎
高梨 範夫
Next Patent: MOTOR CONTROL DEVICE