High-power-density permanent magnet synchronous motor and flywheel integrated device

A technology of permanent magnet synchronous motor and high power density, which is applied in the direction of electromechanical devices, electrical components, electric components, etc. It can solve the problems of radial magnetic field motor shaft length and poor shaft stability, and achieve low self-dissipation rate, The effect of low torque ripple and avoiding electromagnetic interference

Pending Publication Date: 2022-04-29
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the axial length of the radial field motor of the common flywheel energy storage system is long, and the stability of the shaft system is poor when the motor is running at high speed, so the rotor structure needs to be improved

Method used

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  • High-power-density permanent magnet synchronous motor and flywheel integrated device
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  • High-power-density permanent magnet synchronous motor and flywheel integrated device

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Embodiment Construction

[0032] The disclosed content of the present invention is as follows figure 1 The structural schematic diagram of a high power density permanent magnet synchronous motor and flywheel integration device shown and the figure 2 A schematic diagram of the magnetic circuit of a permanent magnet synchronous motor with a high power density permanent magnet synchronous motor and flywheel integrated device when a winding short circuit fault occurs.

[0033] An embodiment of the present invention provides a high power density permanent magnet synchronous motor and flywheel integrated device, including a vacuum cover (1), a first magnetic bearing (2), a second magnetic bearing (3), a rotating shaft (4), and a rotor disk (5), first rotor module (6), second rotor module (7), first stator module (8), second stator module (9), rotor yoke (10) and flywheel (11).

[0034] Furthermore, as a specific implementation of a high power density permanent magnet synchronous motor and flywheel integrat...

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Abstract

The invention discloses a high-power-density permanent magnet synchronous motor and flywheel integrated device which mainly comprises a motor and a large-mass flywheel, the motor is composed of a rotor and stators, the rotor is of an I-shaped structure, permanent magnets are installed on the inner sides of an upper transverse line and a lower transverse line of the I-shaped structure, and the two stators are located on the two sides of a vertical line of the I-shaped structure respectively and located in the rotors. The shell is fixed on the shell; the large-mass flywheel is arranged on the outer side of the rotor and fixedly connected with the rotor. Two passive magnetic bearings are arranged on the left and right sides of the motor to realize non-contact suspension of the rotor and realize vacuum operation. The two sets of windings of the motor adopt annular structures, a magnetic circuit is closed through the annular yoke part during short circuit, and each set of winding has short circuit resistance under the short circuit condition. The motor has the advantages of being light in weight, low in iron core loss, free of cogging torque, high in efficiency, low in self-dissipation rate, good in dynamic performance, high in overload capacity and the like.

Description

technical field [0001] The invention relates to the field of motor design, in particular to a high power density permanent magnet synchronous motor and flywheel integrated device. Background technique [0002] Traditional power supply (hydropower, thermal power, nuclear power) has large-scale and continuous characteristics, while power loads are often random and intermittent. The capacity contradiction between power supply and demand leads to lower utilization efficiency of power generation, transmission and transformation equipment And seriously affect the utilization efficiency of primary energy. The best choice to deal with this problem is to add energy storage devices in the system, provide power buffer, and perform reactive power and active power compensation. [0003] At present, energy storage methods can be divided into physical energy storage, electrochemical energy storage and electromagnetic energy storage. Physical energy storage includes: elastic energy storag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K7/02H02K1/18H02K1/28
CPCH02K7/025H02K1/187H02K1/28H02K2201/03Y02E60/16Y02E70/30
Inventor 黄文新胡婧赵勇陈健陆磊卞雨婕
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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