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Two more patents have been granted to Hpmont recently.

1.Energy-saving control method and system of frequency converter

The invention can reduce the no-load loss of the motor and save the output energy of the frequency converter.

2.Elevator emergency power supply

The invention can be used to provide emergency power supply for elevator in case of abnormal market power. The volume and cost of emergency power supply for elevator can be effectively reduced by adopting common DC bus.