English to French Tech/Engineering Patents (in a patent) A scroll compressor with a DOL synchronous reluctance motor

the electric motor is a direct-on-line synchronous reluctance motor.

Such a reduction of the starting torque allows to use a direct-on-line synchronous reluctance motor for driving the drive shaft, despite the fact that such a direct-on-line synchronous reluctance motor has a low starting torque.

Since a direct-on-line synchronous reluctance motor has a high efficiency and is substantially less costly than high efficiency motors usually used for scroll compressors, the scroll compressor according to the present invention has an improved efficiency without being expensive.

Direct-on-line synchronous reluctance motors do not need drive and can be connected directly to the electrical network. Direct-on-line synchronous reluctance motors do not use ferrite magnets that are not reliable at low temperature. Direct-on-line synchronous reluctance motors do not use rear-earth magnet that are expensive and not reliable at high temperature.