Polyphase permanent magnet motor with leakage reactance adjustable structure

A permanent magnet motor, a technology for adjusting the structure, applied in the synchronous motor with a static armature and a rotating magnet, the shape/pattern/structure of the magnetic circuit, the shape/pattern/structure of the winding conductor, etc. Low torque density, complex process and other problems, to achieve the effect of high air gap magnetic density, high torque density and power density, and low temperature rise

Inactive Publication Date: 2012-09-12
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of large volume, complex process, large winding loss and low torque density in the existing permanent magnet motor with slotless structure, the present invention proposes a multi-phase permanent magnet motor scheme with adjustable leakage reactance

Method used

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  • Polyphase permanent magnet motor with leakage reactance adjustable structure
  • Polyphase permanent magnet motor with leakage reactance adjustable structure
  • Polyphase permanent magnet motor with leakage reactance adjustable structure

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specific Embodiment approach 1

[0022] Specific implementation mode one, see Figures 1 to 5This embodiment will be described. A multi-phase permanent magnet motor with adjustable leakage reactance described in this embodiment is a cylindrical rotary motor, which includes a stator and a rotor, an air gap between the rotor and the stator, and the stator includes a stator core 1, a stator winding And the casing 2, the stator also includes a coil bobbin 3, the stator core is circular, the inner surface of the stator core is smooth, and the outer surface of the stator core is opened in the axial direction, and the through slot is the stator core Slot 1-1, there are km core slots evenly distributed along the circumference on the outer surface of the stator core, a coil frame 3 is installed on the inner wall of the stator core, and the coil frame consists of a thin-walled tube 3-1 and km thin partitions 3- 2, where k is a natural number and m is the phase number of the stator winding. The thin partitions 3-2 are...

specific Embodiment approach 2

[0025] Specific implementation mode two, see Figure 6 and 7 The present embodiment is illustrated. The multi-phase permanent magnet motor with adjustable leakage reactance described in this embodiment is a cylindrical rotary motor, which includes a stator and a rotor. There is an air gap between the rotor and the stator. The stator includes a stator core 1, a stator winding and a motor. Shell 2, the stator also includes a coil bobbin 3, the stator core is circular, the inner surface of the stator core is smooth, and the outer surface of the stator core is axially opened with slots, and the slots are stator core slots 1 -1, there are km core slots evenly distributed along the circumference on the outer surface of the stator core, and the coil frame 3 is installed on the inner wall of the stator core, and the coil frame is composed of a thin-walled tube 3-1 and km thin partitions 3-2 , wherein, k is a natural number, m is the phase number of the stator winding, the thin parti...

specific Embodiment approach 3

[0028] Specific implementation mode three, see Figure 7 , 8 , 9 and 10 illustrate this embodiment. The multi-phase permanent magnet motor with adjustable leakage reactance described in this embodiment is a cylindrical rotary motor, which includes a stator and a rotor. There is an air gap between the rotor and the stator. The stator includes a stator core 1, a stator winding and a motor. Shell 2, the stator also includes a coil bobbin 3, the stator core is circular, the inner surface of the stator core is smooth, and the outer surface of the stator core is axially opened with slots, and the slots are stator core slots 1 -1, there are 2km core slots evenly distributed along the circumference on the outer surface of the stator core, and the coil frame 3 is installed on the inner wall of the stator core, and the coil frame is composed of a thin-walled tube 3-1 and 2km thin partitions 3-2 , wherein, k is a natural number, m is the phase number of the stator winding, the thin par...

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Abstract

The invention discloses a polyphase permanent magnet motor with a leakage reactance adjustable structure, and belongs to the technical field of motors. The motor can be a cylindrical rotating motor as well as a flat linear motor. The air gap side of a stator core is a smooth surface, and core slots are axially reserved on the other side of the stator core. A plurality of core slots are uniformly distributed on the surface of a stator. A coil rack is fixedly arranged on the air gap side of the stator core, and is uniformly provided with a plurality of coil slots along a circumferential direction. The coil slots are in one-to-one correspondence with the stator slots. The centerlines of the coil slots and corresponding core slots are positioned on the same radius. One active side of each coil of an armature winding is embedded into a wire casing, and the other active side of the coil is embedded into a stator slot opposite to the wire casing. The stator slot is an open slot, a closed slot or a semi-open slot. The polyphase permanent magnet motor has the advantages of high winding accuracy, high insulation characteristics, short end part, high efficiency and small torque fluctuation.

Description

technical field [0001] The invention relates to a multiphase permanent magnet motor with an adjustable leakage reactance structure, belonging to the field of motors. Background technique [0002] The permanent magnet brushless motor with slotless structure integrates permanent magnet, brushless and slotless, which fundamentally solves the problem of low output, large torque fluctuation, large hysteresis and eddy current loss, magnetic saturation, Problems such as loud noise, low efficiency and slow response. Through the use of permanent magnet excitation, the excitation coil on the rotor is eliminated, which is highly efficient and energy-saving; the brushless structure realizes no brush, no commutator, no spark, and high power-to-weight ratio; the slotless structure has a large space for winding distribution and heat dissipation Good, the armature copper loss is small, the iron core is not saturated, the iron loss (eddy current, hysteresis loss) is small, the cogging effec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K21/12H02K1/16
CPCH02K41/031H02K3/28H02K3/47H02K21/14
Inventor 寇宝泉曹海川李伟力张晓晨
Owner HARBIN INST OF TECH
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