Pole piece cooling clearance for axial motors

A technology for electric motors, axial flux, applied in cooling/ventilation units, salient poles, synchronous motors with stationary armatures and rotating magnets, etc.

Active Publication Date: 2019-01-18
YASA LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is not suitable for axial flux synchronous motors, because the heat transfer ring produces eddy current losses that interfere with the operation of the motor

Method used

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  • Pole piece cooling clearance for axial motors
  • Pole piece cooling clearance for axial motors
  • Pole piece cooling clearance for axial motors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] reference figure 1 , The stator of the dual-rotor yoke-less segmented armature motor is made of a plurality of electromagnetic coils 50. Each electromagnetic coil 50 includes pole pieces 60 and associated coils 55 distributed in the cavity 30 in a clockwise direction. 30 has cavity walls 40a and 40b, and the coil 55 is connected together and powered by an external power source (not shown) to generate a magnetic field rotating around the coil. Either end of the electromagnetic coil interacts with a plurality of permanent magnets 15 mounted on the rotor 10 in a clockwise direction. After that, the magnet and the rotor passively rotate from one pole position to the adjacent pole position by the action of the rotating electromagnetic field, and the rotor 10 rotates around the X axis. The stator cavity 30 includes a liquid coolant that circulates between the electromagnetic coils to remove heat, and transfer the heat outward to the motor, and finally to a radiator (not shown)...

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PUM

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Abstract

An axial flux motor is provided comprising: one or more rotating disks (10); a stator (20) having a cavity (30) formed between walls (40a, 40b) ), and wherein the stator includes more than one electromagnetic coil assembly (50). Each of the solenoid coil assemblies includes more than one pole piece (60), each said pole piece having an axially extending shank portion (70a), a first radially extending end shoe (72a) and a second radially extending an extended end shoe (72b) and one or more associated coils (55), each of said one or more associated coils being wound around the shank portion; wherein: said outer surface (75) of said end shoe is preferably connected to one or the other of the walls. One or both of said first or second shoe further comprises a heat exchange surface (72a1, 72b1) facing said coil (55) wound on said shank portion (70a) to define said heat exchange A first cooling channel (100a, 100b) between one or both of the surfaces and the coil and a second flow channel (100c) defined by the spacing between the coil (55) and an adjacent coil .

Description

Technical field [0001] The present invention relates to a motor, and specifically, but not exclusively, to a motor or generator. The motor or generator is generally referred to as a yokeless segmented armature (YASA) motor or generator. In a motor or generator, the stator is provided with electromagnetic coils wound on pole pieces, and the rotor is provided with permanent magnets that cooperate with the electromagnetic coils that span the air gap between the rotor and the stator. Background technique [0002] The electromagnetic coil is made of a pole shank and two pole shoes located at either end of the pole shank. The pole shank constrains the solenoid coil, and the pole shoe has two functions: a) The solenoid coil is limited to the pole shank, that is, the metal wire is wound on the pole shank, and the metal wire is wound close to the pole shoe and passes through the pole. The shoe is housed on the pole stem, and b) the magnetic flux is transferred from the pole stem through ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/20H02K3/24H02K21/24H02K1/08H02K9/197
CPCH02K3/24H02K21/24H02K1/08H02K9/197H02K1/20H02K9/227
Inventor T·沃尔默A·考特C·金M·伊斯特J·巴克
Owner YASA LIMITED
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