Electronically commutated motor, HVAC system comprising the same, and method for signal conversion between HVAC system and motor

A motor, comprising:

• a motor body, the motor body comprising a housing, a stator assembly, and a rotor assembly, and the stator assembly comprising a stator winding;
• and
• a motor controller, the motor controller comprising a control circuit board, and the control circuit board comprising a power source, a microprocessor, an insulated-gate bipolar transistor (IGBT) inverter circuit, and a plurality of universal interface modules;
• wherein:
• the motor controller is configured to be connected to a main control board of a heating, ventilation, and air conditioning (HVAC) system, to receive a command from the HVAC system, and to control an operation of the motor body based on the command;
• the power source is configured to supply power to each electric circuit of the motor controller;
• the microcomputer is configured to control an operation of the IGBT inverter circuit;
• the IGBT inverter circuit comprises an output terminal;
• the stator winding comprises a coil winding;
• and the output terminal is connected to the coil winding;
• the plurality of universal interface modules comprises at least two types of modules selected from a multi-pin communication interface module, a multi-line communication interface module, a multi-position control interface module, and a pulse-width modulation (PWM) signal communication interface module;
• the microprocessor is adapted to communicate with the HVAC system via one of the plurality of universal interface modules;
• and
• each of the plurality of universal interface modules comprises a plurality of signal input ports and is adapted to transmit a plurality of signals in a communication mode from the HVAC system into the microprocessor, whereby the microprocessor is communicated to the HVAC system under the communication mode.