Electric Compressor
WARNING: This page is about a different variant/trim than selected.
- An electric scroll compressor is used.
- A 3-phase output inverter with IPM (Intelligent Power Module) is used.NOTE:
- IPM is the element which delivered power device equivalent to IGBT (Insulated Gate Bipolar Transistor) and the protection feature of the circuit to one package.
- IGBT is a transistor which is suitable for high voltages and large currents and which can control large electrical power using a small gate voltage.
- The inverter is adopted to IPM for smaller size and improved reliability.
- The structure integrates the inverter, compressor, and motor, allowing compressor to operate at any speed.
- The inverter communicates with A/C auto amp., and uses PWM (Pulse Width Modulation) contro to control the motor speed via the drive circuit.NOTE:
- PWM is a system that controls current and voltage by changing the duty ratio of a constant frequency pulse wave.
- PWM is used as the adjustment method of output voltage when inverter is used as a power supply for controlling motor speed.
- PWM changes voltage application time (pulse width) using a semiconductor element and controls motor speed.
- The IPM contains an internal protection circuit, and uses the inverter control circuit to monitor for an increase in motor drive circuit temperature in order to prevent circuit overheating.
- The motor uses a DC brushless motor, with speed control performed by the inverter drive circuit.