Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Field-weakening multi-stator six-phase permanent magnet synchronous drive motor, electric vehicle and method thereof

A permanent magnet synchronous, drive motor technology, applied to electric vehicles, synchronous motors with stationary armatures and rotating magnets, motors, etc., can solve the problem of complex midpoint potential control and control algorithms, and reliable dynamic and static voltage equalization systems In order to reduce the magnetic flux leakage effect at the end, reduce the iron consumption and increase the utilization rate

Active Publication Date: 2020-04-10
SHANDONG UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As far as the inventor knows, due to the limitation of the power level of power electronic devices, it is difficult for the three-phase motor drive system powered by the traditional two-level inverter to meet the needs of high-power applications. capacity, but the resulting dynamic and static pressure equalization, current equalization and other issues will greatly reduce the reliability of the system
At present, in medium-to-high voltage and high-power applications, multi-level inverters are mainly used to realize cascading of low-voltage power devices, but there are also problems such as the need for mid-point potential control and complex control algorithms.
It is more suitable to use multi-phase motor drive system in high-power occasions such as electric vehicles, ships and rail transit drive motors, but the current multi-phase motors often have the problems of end magnetic flux leakage and low utilization rate of motor core materials

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Field-weakening multi-stator six-phase permanent magnet synchronous drive motor, electric vehicle and method thereof
  • Field-weakening multi-stator six-phase permanent magnet synchronous drive motor, electric vehicle and method thereof
  • Field-weakening multi-stator six-phase permanent magnet synchronous drive motor, electric vehicle and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Such as figure 1 — figure 1 As shown in (e), the number of motor phases in this embodiment is 6, the number of radial stator teeth is 48, the number of axial stator teeth is 48, the number of rotor slots is 8, the number of radial magnetic poles is 8, and the number of axial magnetic poles is 8. There is a fan ring structure at one end of the fan ring, and 8 permanent magnets are attached to the fan ring. The polarity of the permanent magnets on the fan ring on the iron core side is opposite to the axial magnetic flux generated by the permanent magnets in the rotor slot. , this embodiment includes a radial stator, an axial stator and a rotor. The radial stator is made of laminated silicon steel sheets. A radial armature winding 4 is placed in the stator slot 3. The radial armature winding 4 can be divided into distributed winding, concentrated winding or stacked winding. The number of poles of the radial armature winding is consistent with the number of radial magnetic...

Embodiment 2

[0074] Such as figure 2 — figure 2 As shown in (e), the main difference between Embodiment 2 and Embodiment 1 is that (1) there are axial stators at both ends of the motor in Embodiment 2, and the two ends of the soft magnetic composite rotor core of the motor Both are processed into the shape of a fan ring to form an axial magnetic pole, while in Embodiment 1 only one end of the motor has an axial stator, and only one end of the motor rotor iron core is processed into a fan ring to form an axial magnetic pole, (2) In the second embodiment, because the two sections of the rotor are all processed into the shape of the fan ring, the number of permanent magnets that need to be placed on the fan ring increases. In the structure of the second embodiment, since the two ends of the rotor have rotors, it is possible to eliminate the unevenness on the rotor. Balanced magnetic pull. In this embodiment, the number of motor phases is 6, the number of radial stator teeth is 48, the num...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a Flux-weakening multi-stator six-phase permanent magnet synchronous drive motor, electric vehicle and method thereof. A rotor is sleeved in a stator and is arranged coaxially with the radial stator. At least one end of that rotor is provided with an axial stator, the axial stator is concentrically arranged with the rotor, a radial win is arranged in the stator slot of the radial stator, and an axial winding is arranged in the stator slot of the axial stator. The three-phase magnetic potential generated by the radial winding and the axial winding is staggered by 60 DEG or 30 DEG so as to realize different modes of operation of the motor in a symmetrical six-phase or an asymmetrical six-phase; By placing permanent magnets at the end of the rotor, the axial magnetic density is increased, the radial electric load and magnetic load of the motor are reduced, the heat dissipation of the motor is effectively improved, and the power density of the motor is improved.

Description

technical field [0001] The disclosure relates to a field-weakening multi-stator six-phase permanent magnet synchronous drive motor, an electric vehicle and a method thereof. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] With the improvement of high temperature resistance and price reduction of permanent magnet materials, permanent magnet motors have been widely used in national defense, industry, agriculture and daily life, and are developing in the direction of high power, high functionality and miniaturization. The variety and application fields of magneto are constantly expanding. At present, the power of permanent magnet motors ranges from a few milliwatts to thousands of kilowatts, and the application scope ranges from small toy motors to large permanent magnet motors used in ship traction. They are used in various aspects of the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02K16/04H02K21/14H02K21/24H02K1/12H02K1/27H02K3/04
CPCH02K1/12H02K1/2713H02K1/2766H02K3/04H02K16/04H02K21/14H02K21/24H02K2213/03Y02T10/64
Inventor 王道涵彭晨王秀和
Owner SHANDONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com