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Synchronous electric motor with permanent magnets and electric compressor comprising such an electric motor

A synchronous motor, permanent magnet technology, used in synchronous motors with stationary armatures and rotating magnets, liquid fuel engines, components of pumping devices for elastic fluids, etc. To solve problems such as the reduction of performance, to achieve the effect of minimizing the increase of materials, the increase of weight, and the reduction of manufacturing

Inactive Publication Date: 2015-07-08
VALEO EQUIP ELECTRIC MOTEUR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the batteries of these vehicles are sensitive to climatic conditions and the vehicle's autonomy is greatly reduced under the most difficult conditions

Method used

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  • Synchronous electric motor with permanent magnets and electric compressor comprising such an electric motor
  • Synchronous electric motor with permanent magnets and electric compressor comprising such an electric motor
  • Synchronous electric motor with permanent magnets and electric compressor comprising such an electric motor

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Embodiment Construction

[0036] Figure 1a , 1b , 4 and 5 show a stator 1 of a synchronous motor with permanent magnets comprising stator teeth 2, also referred to as stator arms, which are regularly distributed in the circumferential direction and in a housing formed by stacked plates 3 extends in the axial direction XX'. In the following description, the terms axial, radial and transverse will be made with reference to the axis XX′ of the stator 1 which is hollow in the center for the implantation of the rotor 5 . The axis XX' constitutes the axis of rotation of the electric motor.

[0037] The housing 3 is configured to be supported by a case included by the motor. In this embodiment, a longitudinal chamber 4 in the form of a recess of the semi-open type is present between two consecutive teeth 2 . Each of these notches 4 is provided with the Figure 4 The notched insulator 400 shown in the Figure 4 Same as Figure 11 in application FR 12 / 55481 filed on June 12, 2012. This insulator 400 is in...

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Abstract

The synchronous electric motor with permanent magnets comprising a wound stator (1) comprising stator teeth extending axially formed in a frame and a rotor (5) comprising a plurality of said magnets extending axially into a cylinder head (6), being embedded according to a flux concentration construction of said rotor (5) in which a first length (Ls1) of said rotor (5) is greater than a second length (Ls1) of said stator teeth and in which a ratio of said first length (Ls1) to said second length (Ls2) is lower than 1.3. The compressor is characterised in that it comprises such an electric motor.

Description

technical field [0001] The invention relates to a synchronous electric motor with permanent magnets for use in the automotive industry, in particular for electric compressors. [0002] The invention also relates to an electric compressor comprising such an electric motor. Background technique [0003] Currently, ecological considerations, and in particular the fight against global warming, support the development of electric vehicles. [0004] However, the batteries of these vehicles are sensitive to climatic conditions and the vehicle's autonomy is greatly reduced under the most difficult conditions. Therefore, there is a need for an air conditioning system. [0005] In vehicles with a heat engine, the compressor of the air conditioning system is usually mechanically coupled to the engine. [0006] In electric vehicles, the compressor is driven by an electric motor that must obey many constraints, not only in terms of power, torque, and rotational speed, but also in term...

Claims

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Application Information

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IPC IPC(8): H02K1/06H02K21/16H02K1/27
CPCH02K21/16H02K2213/03H02K2201/03H02K1/06H02K1/2773F04C29/0085H02K1/02
Inventor L.鲍阿劳德杰M.拉科托瓦奥B.沃梅J-C.马特
Owner VALEO EQUIP ELECTRIC MOTEUR