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Oil Hydraulics Div. Home >  Energy-saving technology of Daikin >  High-efficiency IPM motor

Energy-saving technology of Daikin

High-efficiency IPM motor

DAIKIN’s innovative IPM motors are the key technology to energy-saving in air conditioners with over one million installations. This same unique technology has been adapted to oil hydraulic equipment.

“Double Torque, power of rotations” improves the energy saving effect.

The combination of two rotating forces of the ever potent neodymium “magnet torque” and DAIKIN original “Reluctance torque”, elevated power can be generated at lower electricity.

  (Ferrite magnet)   (Neodymium magnet)

Key of the improved
energy saving effect:
Powerful neodymium magnet

The neodymium magnet has a much stronger power than the popular ferrite magnet.

Principle of IPM motor

A rare-earth permanent magnet deeply positioned in the rotor can generate magnet torque (attraction/repellence between coil and permanent magnet) and reluctance torque (coil attracts iron) greatly. This electromagnetic structure attains high torque and the highest efficiency/low heat generation.

Structure of conventional motor (AC servo) Structure of IPM

Comparison of motor efficiency

Daikin IPM motor efficiency is much higher than that of an induction motor.

Our IPM motor efficiency

High torque at the low speed range

Daikin IPM motor produces high torque at low speed. During general use, an inverter type may at times have limited torque at low speed range; Daikin IPM motor is free of such a problematic occurrence.

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