Modular energy storage flywheel and system
An energy storage flywheel, modular technology, applied in the control of mechanical energy, electromechanical devices, structural connections, etc., can solve the problems of difficult adjustment of stiffness and damping characteristics, low output power of magnetic levitation devices, and low speed of high-power motors, and achieve power consumption. Low cost, small footprint, and the effect of reducing the difficulty of assembly and adjustment
Pending Publication Date: 2022-05-13
SHANGHAI AEROSPACE CONTROL TECH INST
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Problems solved by technology
[0004] Under the traction of relevant national special projects, many institutions have carried out the research and principle verification of the basic theory and key technologies of flywheel energy storage. In order to reduce power consumption and improve support efficiency, most of the energy storage devices developed adopt specially designed mechanical bearings and shafts. It is difficult to adjust the stiffness and damping characteristics of the unloading scheme to the permanent magnet; limited by the bearing support, the speed of the high-power motor is low (usually several thousand revolutions), the volume and mass of the system are huge, which reduces the energy density; limited by the motor power level and Critical speed, the disclosed magnetic levitation device has low output power, low operating speed, and poor parallel expansion capability
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[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0036] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the drawings shown in the drawings. The orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific ...
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The invention discloses a modular energy storage flywheel and system. The energy storage flywheel comprises a shell, an upper module assembly, a motor assembly, a wheel body and a lower module assembly. The upper module assembly comprises an upper end cover and an upper radial bearing assembly; the lower module assembly comprises a lower radial bearing assembly, a lower axial bearing assembly and a lower end cover; the upper module assembly and the lower module assembly can be installed on the shell as a whole. The modularized high-power magnetic suspension energy storage flywheel system provided by the invention has the advantages of high monomer voltage, large output power, full monitoring of the state, adoption of a magnetic suspension supporting scheme, high working rotation speed, high power density, allowing of short-time large-current charging and discharging, long service life, good temperature adaptability and the like; compared with an existing product, due to the introduction of the combined magnetic bearing assembly, the whole machine is more compact, and the power density is higher; the optimized high-power high-speed motor and vacuum magnetic suspension technology improve the working rotating speed.
Description
technical field [0001] The invention relates to an energy storage device, in particular to a modular energy storage flywheel and a system. Background technique [0002] In recent years, energy storage technology and applications have developed rapidly. Among them, the flywheel energy storage system uses the acceleration and deceleration of the flywheel rotor to realize the bidirectional flow of electrical energy and mechanical energy. High current charge and discharge, long life, good temperature adaptability and so on. Among them, the large inertia flywheel body is the energy carrier. Under the bearing support, the motor is driven by the motor to rotate at high speed, and the generator is driven to release electric energy. Therefore, the key to realizing the high specific energy / high specific power design of the energy storage flywheel is to reduce the bearing support loss. , Improve the critical speed of the flywheel rotor and the energy conversion efficiency, and at the ...
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IPC IPC(8): H02J3/30H02K7/09H02K5/18H02K11/21H02K5/22H02K7/02H02N15/00
CPCH02J3/30H02K7/09H02K5/18H02K11/21H02K5/22H02K7/025H02N15/00
Inventor吕奇超李延宝吕东元周一恒郑建勇
OwnerSHANGHAI AEROSPACE CONTROL TECH INST