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A stator hybrid excitation flywheel energy storage motor

A technology of flywheel energy storage and hybrid excitation, which is applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve the problems of complex control methods of magnetic suspension bearings, poor compactness of flywheel energy storage systems, and influence on rotor dynamic characteristics, etc., to achieve Improved energy utilization, low air-gap magnetic density, and low cost

Active Publication Date: 2021-08-31
中能(深圳)能源科技发展有限公司
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AI Technical Summary

Problems solved by technology

The flywheel energy storage system often adopts the magnetic suspension bearing to reduce the loss of the flywheel rotor under high-speed rotation, but the control method of the magnetic suspension bearing is complicated, the cost is high, and the axial length of the motor is increased, which affects the dynamic characteristics of the rotor. Lead to poor compactness of flywheel energy storage system

Method used

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  • A stator hybrid excitation flywheel energy storage motor
  • A stator hybrid excitation flywheel energy storage motor
  • A stator hybrid excitation flywheel energy storage motor

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Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0033] refer to figure 1 , combined with Figure 2-Figure 5 , the flywheel energy storage motor in this embodiment will be described in detail.

[0034] The present invention provides a stator hybrid excitation flywheel energy storage motor, adopting a vertical installation method, comprising: a flywheel rotor 1, a stator core 2 and an armature winding 3 arranged around the outer side of the f...

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Abstract

The invention discloses a stator hybrid excitation flywheel energy storage motor, belonging to the technical field of electric energy storage, comprising: a flywheel rotor, a stator core and an armature winding arranged around the outside of the flywheel rotor; The upper end cover and the lower end cover on the side; the upper field winding, the upper ferromagnetic ring, and the upper permanent magnet ring distributed in the radial direction from outside to the inside; the lower field winding and the lower ferromagnetic ring distributed in the radial direction from outside to inside. During the energy storage and maintenance period, the upper permanent magnet ring generates an axially upward electromagnetic force on the flywheel rotor to reduce the bearing load; during charging and discharging, the excitation winding and the upper permanent magnet ring are mixedly excited to provide a working magnetic field for the flywheel energy storage motor, and at the same time provide The flywheel rotor provides an axial upward electromagnetic force. In this way, the motor topology of the present invention can reduce bearing load and loss, reduce electromagnetic loss during energy storage retention, and improve energy storage efficiency. The overall structure of the motor is durable, simple and reliable, with low standby loss and high cost performance.

Description

technical field [0001] The invention belongs to the technical field of electric energy storage, and more specifically relates to a stator hybrid excitation flywheel energy storage motor. Background technique [0002] With the economical and sustainable development of energy, electric energy storage flywheel energy storage technology has gradually become a research hotspot due to its advantages such as environmental friendliness, short charge and discharge time, long life, and high energy storage density. [0003] The flywheel energy storage motor is the core component of the energy conversion system, and its performance directly affects the performance of the entire flywheel energy storage system. Flywheel energy storage motors usually need to work at high speed, so the motor rotor is required to have high mechanical strength and high reliability. Due to the characteristics of brushless rotor and high efficiency, permanent magnet motors are widely used in flywheel energy st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K7/02H02K5/16
CPCH02K5/16H02K7/025Y02E60/16
Inventor 叶才勇余德钻
Owner 中能(深圳)能源科技发展有限公司
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