Rotor position robust observation method used for flywheel energy storage system

A technology of rotor position and flywheel energy storage, which is applied in the direction of control system, vector control system, control electromechanical transmission device, etc., and can solve the problems affecting the power quality of power system, etc.

Active Publication Date: 2018-04-13
NANJING INST OF TECH
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However, renewable energy itself is intermittent and random. If it is directly connect

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  • Rotor position robust observation method used for flywheel energy storage system
  • Rotor position robust observation method used for flywheel energy storage system
  • Rotor position robust observation method used for flywheel energy storage system

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings.

[0033]A rotor position robust observation method for a flywheel energy storage system, which introduces the feedback of the composite back electromotive force estimation value into the stator current observation to estimate the rotor position information, and is a rotor position robust observation method based on a multi-mode disturbance observer method; this method first establishes the compound back EMF model sliding mode observer, and then feeds back the compound back EMF estimated value of the current state equation in the two-phase stationary coordinates as the system disturbance, and uses the multi-mode disturbance observer based on the virtual parameter identification method to analyze the rotor At the same time, in order to improve the control accuracy of the system, a multi-mode disturbance observer based on virtual parameter identification method is used to fu...

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Abstract

The invention discloses a rotor position robust observation method used for a flywheel energy storage system. The rotor position robust observation method comprises the steps of establishing a composite counter electromotive force model sliding-mode observer firstly, and next, by taking composite counter electromotive force estimation value feedback of a current state equation in a two-phase static coordinate as system disturbance, enabling a virtual parameter identification method-based multimode disturbance observer to perform accurate evaluation on the rotor position information; meanwhile,performing fuzzy prediction on the positioning torque of an FSPM motor by the virtual parameter identification method-based multimode disturbance observer, and further improving the positioning torque prediction precision of the FSPM motor through an error online training compensator; and meanwhile, performing control by taking the positioning torque as known disturbance. By virtue of the rotor position robust observation method, the positioning torque prediction value of the FSPM motor can quickly and accurately follow a real value, so that wide-speed-range position-free accurate tracking ofthe FSPM motor used for the flywheel energy storage system in different working condition operating conditions can be realized.

Description

technical field [0001] The invention relates to a rotor position robust observation method for a flywheel energy storage system, which belongs to the FSPM motor control technology for the flywheel energy storage system. Background technique [0002] Energy is an important driving force for social progress and productivity development. With the rapid development of the global economy and the rapid growth of energy demand, traditional fossil energy consumption is huge and is going to be exhausted. Human beings are facing the severe test of energy crisis. In recent years, renewable energy technologies such as wind energy and solar power have developed rapidly, and renewable energy will occupy an extremely important position in the energy structure of the future power system. However, renewable energy itself is intermittent and random. If it is directly connected to the power system, it will seriously affect the power quality of the power system. Energy storage technology is on...

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Application Information

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IPC IPC(8): H02P21/18
CPCH02P21/18H02P2207/00
Inventor 孟高军张亮孙玉坤刘海涛
Owner NANJING INST OF TECH
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