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A vertical hybrid magnetic levitation flywheel energy storage system

A flywheel energy storage and magnetic levitation technology, which is applied in the direction of controlling mechanical energy, bearings, electrical components, etc., can solve the problems of difficulty in increasing the motor speed, low space utilization rate, and low energy storage density of the system, achieving high edge line speed and system The effect of strong rotor stability and large energy storage

Active Publication Date: 2016-03-30
NAVAL UNIV OF ENG PLA
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Problems solved by technology

[0004] The current flywheel energy storage system products are mostly supported by mechanical bearings, resulting in large standby loss; it is difficult to increase the motor speed, and the system energy storage density is low; the system structure is complex, the space utilization rate is not high, and the stability is poor

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  • A vertical hybrid magnetic levitation flywheel energy storage system
  • A vertical hybrid magnetic levitation flywheel energy storage system
  • A vertical hybrid magnetic levitation flywheel energy storage system

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Embodiment Construction

[0037] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the present invention, and are not intended 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 conflict with each other.

[0038] like figure 1 Shown is a vertical hybrid magnetic suspension flywheel energy storage system, including a metal shell 5, a base 7, and an upper radial hybrid magnetic bearing 2, a high-speed permanent magnet motor 3, a flywheel arranged in the metal shell 5 sequentially from top to bottom The main body 4, the lower radial hybrid magnetic bearing 6 and the axial hybrid magnetic bearing 1, and the upper radial...

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Abstract

The invention discloses a vertical type hybrid magnetic suspension flywheel energy storage system. A high-speed permanent magnet motor is a charging and power generating integrated motor, the input / output end is connected with a matrix converter, a flywheel body which can rotate at high speed is used in cooperation, and then the system has the energy storage and energy release bi-directional functions. A permanent magnet offset shaft and radial hybrid magnetic bearings are used as a main supporting structure, a mechanical rolling bearing provides system instability protection, standby losses of the flywheel energy storage system are reduced, and energy conversion efficiency is improved. A metal shell of the system is thick, a vacuum chamber is formed, rotor windmill losses of the system are reduced, and meanwhile the supporting and protection effects are achieved. A base is large, so that the center of gravity of the system is lowered and stability of the system is improved. The system has the advantages of being large in capacity, high in rotating speed and power density, low in standby loss and the like, and can be used for the occasions such as a power grid peak-load regulation occasion, an uninterruptible power supply and a hybrid power locomotive.

Description

technical field [0001] The invention belongs to the field of electrical technology, and relates to a vertical hybrid magnetic levitation flywheel energy storage system, more particularly, to a vertical hybrid magnetic levitation flywheel energy storage system with large capacity, high rotational speed, high energy density and low standby loss. Background technique [0002] Wind energy, solar energy, tidal energy and other new energy have the characteristics of randomness, intermittency and uncontrollability. Their access to the power grid will cause problems such as power quality degradation, local grid reactive voltage and frequency instability, etc. adversely affect operation. Traditional power generation methods such as hydropower have problems of low equipment utilization and waste of electric energy. In order to improve the utilization rate of the power system, it is necessary to store excess energy. When a short-term high-power load shock occurs in the power grid or a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K7/02F16C32/04
CPCY02E60/16
Inventor 王东张贤彪吴磊涛苏振中易新强陈俊全
Owner NAVAL UNIV OF ENG PLA
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