Winding modular permanent-magnet motor

A permanent magnet motor, modular technology, applied to the magnetic circuit, the shape/style/structure of winding conductors, electric components, etc., can solve the problems of complex processing and assembly technology, large torque ripple, large amount of permanent magnets, etc., to achieve The structure of the rotor is simple and reliable, the electromagnetic coupling is small, and the effect of improving the reliability of the motor

Active Publication Date: 2017-11-17
北京华晖恒泰能源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of the existing permanent magnet synchronous motor with large amount of permanent magnets, complex processing and assembly technology, and large torque ripple, the present invention proposes a winding modular permanent magnet motor

Method used

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  • Winding modular permanent-magnet motor

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Embodiment approach 1

[0024] Such as figure 1 , 2 , 3, and 4, the winding modular permanent magnet motor of this embodiment includes a stator 1, a rotor 2 and an air gap 3. The stator is composed of a stator core 1-1, an armature winding 1-2, a permanent magnet 1-3 and magnetically conductive small teeth 1-4. Large slots 1-1-5 are opened inside the stator core 1-1, permanent magnets 1-3 and magnetically conductive small teeth 1-4 are installed at intervals facing the slots of the air gap 3, permanent magnets 1-3 and magnetically conductive small teeth 1- The arc length of 4 is . The magnetization directions of the permanent magnets 1-3 are all the same. The number of pieces of permanent magnets 1-3 in each notch is 2 pieces, the number of pieces of magnetically conductive small teeth 1-4 is 1 piece, between two permanent magnets 1-3 is magnetically conductive small teeth, and permanent magnets 1-3 The sum of the block numbers with the magnetic conduction small teeth 1-4 is an odd number.

[00...

Embodiment approach 2

[0028] Such as Figure 5 As shown, the difference between this embodiment and Embodiment 1 is: the number of pieces of permanent magnets 1-3 in each notch of the motor is 1 piece, the number of pieces of magnetically conductive small teeth 1-4 is 0 pieces, and the number of pieces of the first tooth The arc length of the width of the top 1-1-2 is S1=Kτ (K is selected as 4), and the arc length of the width of the second tooth top 1-1-4 is S2=(M±2 / 3)τ (M is selected as 4). The cost of the motor is reduced by reducing the amount of permanent magnets, and the motor assembly process is simpler.

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Abstract

The invention provides a winding modular permanent-magnet motor. The winding modular permanent-magnet motor comprises a stator, a rotor and air gaps, wherein the stator comprises a stator core, armature windings, permanent magnets and magnetic conduction small teeth, large grooves are formed in the stator core, the permanent magnets and the magnetic conduction small teeth are arranged at groove openings facing the air gaps, the arc lengths of the permanent magnets and the magnetic conduction small teeth both are Pi, the magnetization direction of the permanent magnets are same, a positive winding and a negative winding of a single effective coil of each phase are arranged in two adjacent large grooves, N coils in the same phase are sequentially wound around adjacent 2N large grooves according to a single coil winding method, teeth among the grooves where the same phase winding is located are first teeth, teeth among different phase windings are second teeth, the rotor comprises rotor cores and gaps, the arc length distance between adjacent rotor cores is 2Pi, and an air gap is formed between the stator and the rotor. The motor employs a same-phase winding modular structure design, the winding structure is simplified, the length of an end part of the winding is shortened, the winding utilization ratio is improved, and the torque density is improved.

Description

technical field [0001] The invention belongs to the field of motors, in particular to a winding modular permanent magnet motor. Background technique [0002] Permanent magnet motors based on high-performance permanent magnets have the advantages of high power density and high power factor. However, in the existing permanent magnet synchronous motors, the permanent magnets are generally installed on the rotor, and the amount of permanent magnets is large, which significantly increases the cost of the motor. In addition, in some low-speed applications, in order to improve the output torque of permanent magnet motors, fractional-slot winding structures with multiple poles and slots are generally used, which makes the number of slots of this type of motor windings more, the winding process is complicated, and the utilization rate of the windings is lower. Low. However, permanent magnet motors with a structure with fewer slots generally have a large torque ripple problem. Con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/17H02K1/16H02K1/22H02K3/28
CPCH02K1/165H02K1/17H02K1/22H02K3/28H02K2201/03H02K2213/03H02K2213/12
Inventor 李静黄旭珍钱振宇
Owner 北京华晖恒泰能源科技有限公司
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