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A method for self-adaptive speed regulation of mechanical elastic energy storage pmsm parameters

A technology of mechanical elastic energy storage and speed regulation method, which is applied to the control of generators, motor generators, and electromechanical brakes. It can solve the problems of complex control systems, increased calculations of control systems, and identification errors. The system is simple and efficient, and the effect of suppressing influence

Active Publication Date: 2020-04-03
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This approach will not only increase the calculation amount of the control system, but also introduce identification errors
It is necessary to use an adaptive algorithm to suppress the influence of the identification error on the control performance, the amount of calculation will be further increased, and the control system is very complicated

Method used

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  • A method for self-adaptive speed regulation of mechanical elastic energy storage pmsm parameters
  • A method for self-adaptive speed regulation of mechanical elastic energy storage pmsm parameters
  • A method for self-adaptive speed regulation of mechanical elastic energy storage pmsm parameters

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Experimental program
Comparison scheme
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Embodiment Construction

[0035] The present invention is realized by the following technical solutions:

[0036] 1. Mathematical model of mechanical elastic energy storage system

[0037] The control block diagram of the mechanical elastic energy storage system is as follows: figure 1 As shown, the inverter drives the PMSM to achieve stable and efficient energy storage under the speed regulation control method of the present invention.

[0038] The mathematical model of PMSM in the d, q axis coordinate system can be written as:

[0039] Stator current equation

[0040]

[0041] Stator Flux Equation

[0042]

[0043] Rotor equation of motion

[0044]

[0045] Electromagnetic Torque Equation

[0046] T e =1.5n p ψ f i q (4)

[0047] In the formula: u d , u q , are stator d, q axis voltage respectively; i d , i q Respectively stator d, q axis current; R is stator resistance; L is stator inductance; n p is the number of pole pairs; ω is the rotational angular velocity of the motor...

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Abstract

The invention relates to a mechanical elastic energy storage PMSM (Permanent Magnet Synchronous Generator) parameter adaptive speed control method. A mechanical model of a mechanical elastic energy storage system composed of a mechanical elastic energy storage box, a PMSG and an inverter connected in sequence is built. With speed and stator current as virtual control variables and based on the back-stepping id=0 vector control and the torque and moment of inertia adaptive control law, a voltage controller is designed, and a stator voltage equation under a d-q coordinate system is obtained. Then, the inverter drives a PMSM to run under control. The control scheme can ensure that the energy storage system has good static and dynamic performance and strong anti-interference ability.

Description

technical field [0001] The invention relates to a parameter adaptive speed regulation method for driving a PMSM during the energy storage process of a mechanical elastic energy storage system, and belongs to the technical field of motors. Background technique [0002] The energy storage element of the mechanical elastic energy storage system is a mechanical elastic energy storage box. There are torque and moment of inertia disturbances in the energy storage process, which leads to certain fluctuations in the speed of the PMSM (Permanent Magnet Synchronous Motor, PMSM) driving device. It will reduce the efficiency and life of the system. The existing control technology usually obtains the real-time parameters of the load of the energy storage box through the identification algorithm, and then performs the next step of control. This approach will not only lead to an increase in the calculation of the control system, but also introduce identification errors. It is necessary t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/05H02P21/00
CPCH02P21/0017H02P21/05
Inventor 郑晓明米增强余洋马云凤
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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