Replacing AC motor with Brushless DC Motor of equivalent rating.?

I'm looking for a motor replacement from ac to dc motor in the compressor of a 1.5 ton air conditioner. The ratings of the a/c compressor motor is 230v 50Hz 1.5 tonne ( 5 kW , 7 HP ) 3 phase induction motor. it must be replaced by a brush-less DC motor of equivalent rating. Any one expert in the field may... show more I'm looking for a motor replacement from ac to dc motor in the compressor of a 1.5 ton air conditioner.
The ratings of the a/c compressor motor is
230v 50Hz 1.5 tonne ( 5 kW , 7 HP ) 3 phase induction motor.

it must be replaced by a brush-less DC motor of equivalent rating. Any one expert in the field may help me solve my problem. Thanks in advance.
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