Permanent magnet synchronous motor with high-power density

A permanent magnet synchronous motor, high power density technology, used in synchronous machines, synchronous machine parts, electromechanical devices, etc., can solve the problems of large motor volume and reduced motor efficiency, achieve high space utilization, improve cooling capacity, The effect of increasing power density

Inactive Publication Date: 2010-11-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the current multi-phase permanent magnet synchronous motor is cooled by liquid cooling, and it is necessary to arrange pipelines inside the motor, resulting in a large motor volume or reducing the efficiency of the motor, and to provide a permanent magnet motor with high power density. synchronous motor

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  • Permanent magnet synchronous motor with high-power density
  • Permanent magnet synchronous motor with high-power density
  • Permanent magnet synchronous motor with high-power density

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specific Embodiment approach 1

[0013] Specific embodiment one: the following combination figure 1 and Figure 4 This embodiment is described. This embodiment includes a stator and a rotor, and an air gap is formed between the stator and the rotor.

[0014] The stator includes armature core 1-1 and armature winding 1-2,

[0015] The air gap side surface of the armature iron core 1-1 is a toothed slot structure, and a plurality of parallel grooves 1-11 form the spaced arrangement of parallel teeth 1-12 and trapezoidal teeth 1-13 on the air gap side surface of the armature iron core 1-1 , the side of the air gap of the trapezoidal teeth 1-13 is the short side, and the middle of the root of each trapezoidal tooth 1-13 is provided with an axial circular through hole 1-14;

[0016] The armature winding 1-2 is sleeved on the parallel teeth 1-12, and the armature winding 1-2 is composed of centrally formed single-layer coils in series or in parallel, and the coils are square.

[0017] The motor described in thi...

specific Embodiment approach 2

[0019] Specific embodiment two: the following combination figure 2 Illustrating this embodiment, the difference between this embodiment and the first embodiment is that the stator further includes cooling pipes 1-3, and each circular through hole 1-14 is embedded with a cooling pipe 1-3, and the phases along the circumferential direction Adjacent cooling pipes 1-3 are connected in series on both sides of the armature core 1-1 in a serpentine shape to form a cooling pipe. Other components and connection relationships are the same as those in the first embodiment.

[0020] Cooling liquid can be introduced into the cooling pipes formed by the series of cooling pipes 1-3 to cool the motor. This high-performance cooling method can greatly improve the cooling capacity of the motor, thereby effectively improving the power density of the motor.

specific Embodiment approach 3

[0021] Specific embodiment three: the following combination image 3 Describing this embodiment, the difference between this embodiment and Embodiment 1 is that the stator further includes a cooling pipe 1-3 and a plurality of heat conduction heat pipes, and the two end faces of the armature core 1-1 are formed by circular through holes 1-14. A circular cooling pipe 1-3 is respectively fixed at the formed circumference;

[0022] Each circular through hole 1-14 is embedded with a heat-conducting heat pipe. The two ends of the heat-conducting heat pipe are two cold ends. One cold end is embedded in a cooling pipe 1-3, and the other cold end is embedded in the other. Inside the cooling pipes 1-3. Other components and connection relationships are the same as those in the first embodiment.

[0023] Cooling liquid is passed through the cooling pipes 1-3. The heat-conducting heat pipe is an internal vacuum structure, and the boiling point of the liquid inside is particularly low. ...

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Abstract

The invention relates to a permanent magnet synchronous motor with high-power density, which belongs to the technical field of motors and solves the problem that the motor volume is large or the motor efficiency is decreased as pipelines are arranged in the motor to cool the motor with a liquid cooling method in the traditional multi-phase permanent magnet synchronous motor. The synchronous motor comprises a stator and a rotor. A gas gap is formed between the stator and the rotor, and the stator comprises an armature iron core and an armature winding. The gas gap side surface of the armature iron core is in a tooth groove structure. The interval arrangement of parallel teeth and trapezoidal teeth are formed on the gas gap side surface of the armature iron core by a plurality of parallel grooves. The gas gap side edges of the trapezoidal teeth are short edges, and the middle of the tooth root of each trapezoidal tooth is provided with an axial circular through hole. The armature winding is sheathed on the parallel teeth, and is formed by connecting single-layer coils in series or parallel, wherein the coil is square. The invention is suitable for permanent magnetic synchronous motors.

Description

technical field [0001] The invention relates to a high-power density permanent magnet synchronous motor, which belongs to the technical field of motors. Background technique [0002] At present, the multi-phase permanent magnet synchronous motor mostly adopts fractional-slot concentrated winding, the manufacturing process of the motor is simple, the end of the winding is short, the insulation is easy, the motor has high efficiency and low cost; at the same time, by choosing a reasonable number of poles and slots, It can effectively reduce the detent torque of the motor. [0003] In order to enhance the cooling capacity of the motor and improve the power density and reliability of the motor, liquid cooling methods such as water cooling or oil cooling are often used to cool the motor. Figure 5 External enclosure piping shown for cooling and Image 6 The cooling of the inner winding pipeline as shown, the cooling of the outer casing pipeline needs to be turned out or milled o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K21/00H02K21/02H02K1/14H02K3/04H02K9/19
Inventor 寇宝泉张千帆
Owner HARBIN INST OF TECH
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