The permanent-magnet synchronous motor is fixed to a sleeve (94).

Advantageously the motor is a permanent-magnet synchronous motor with sinusoidal back-EMF.

A PMM uses permanent magnets embedded in the steel rotor to create a constant magnetic field.

A power converter which drives a permanent-magnetic synchronous motor mounted on an electric railcar, wherein expanded damage of a power converter or a permanent-magnetic synchronous motor is restrained.

An exciting generator and a permanent-magnet synchronous motor are mounted on the main shaft (1).

Its optimized design, its ease of industrialization makes the production costs of such a motor lower than those of a permanent-magnet motor.

The aim of the invention is to provide a permanent-field synchronous motor with an increased air-gap flux density.

The purpose of the present invention is to provide a motor control device capable of improving the stability of sensorless control of a permanent-magnet synchronous motor.

A self-starting permanent magnet synchronous motor includes a rotor provided with squirrel cage conductive bars (3), end rings (4) and permanent magnets (5).

At least one of the centrifugal blower motor, the compressor motor and the axial fan motor is a permanent magnet synchronous motor without a motor controller.

High power/weight ratio, therefore very compact mechanics at the same power when compared to equivalent asynchronous motors;

At least one of the centrifugal blower motor, the compressor motor and the axial fan motor is a permanent magnet synchronous motor without a motor controller.

In the regulation system of the invention, the longitudinal current id in a permanent magnet synchronous motor is adjusted to zero.

The HVAC microprocessor drives the permanent magnet synchronous motor without the motor controller through the inverter unit.

The indoor unit microprocessor or the outdoor unit microprocessor drives the permanent magnet synchronous motor without the motor controller through the inverter unit.