Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Virtual synchronous motor control method with adaptive instruction filter inversion

A virtual synchronous motor and control method technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve the problems of large system modeling errors, solve calculation expansion, suppress power fluctuations and inrush current generation, The effect of ensuring system convergence

Pending Publication Date: 2019-10-22
NANJING INST OF TECH
View PDF2 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the existing problems, the present invention proposes a virtual synchronous motor control method based on adaptive command filtering and inversion to solve the problem of large system modeling errors in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Virtual synchronous motor control method with adaptive instruction filter inversion
  • Virtual synchronous motor control method with adaptive instruction filter inversion
  • Virtual synchronous motor control method with adaptive instruction filter inversion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] In order to further describe the technical features and effects of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0046] 1. Topology structure corresponding to the embodiment

[0047] Such as image 3 As shown, the controller topology adopted by the embodiment of the present invention. The nonlinear signal generated by the adaptive command filter controller is added to the control of the virtual synchronous motor, and the frequency and phase of the system output voltage are still obtained from the rotor equation, and the back EMF is synthesized and then the PWM conversion is performed.

[0048] 2. Implementation of the method of the present invention

[0049] Such as Figure 5 As shown, the backstepping method is used to design the controller, and the intermediate virtual control quantity and the Lyapunov function are selected in sequence to ensure the system convergence, and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a virtual synchronous motor control method with adaptive instruction filter inversion. The method comprises the following steps: a third-order nonlinear state space model is built; and a controller is acquired according to the third-order nonlinear state space model. Through modeling of an ideal synchronous motor rotor equation and a torque part, an adaptive instruction filter inversion controller is designed, smooth switching of a system grid-connected process can be realized, power fluctuation is reduced, and practical engineering application is facilitated.

Description

Technical field [0001] The invention relates to the technical field of distributed power generation micro-grid, in particular to a method for adopting an adaptive command filtering inversion controller to add a non-linear compensation signal in the control of a virtual synchronous motor to improve system stability. Background technique [0002] Distributed energy sources are connected to the grid on a large scale through grid-connected inverters, and distributed power sources based on power electronic inverters are often due to lack of inertia. When the system is disturbed, its output response speed is too fast, and various performance parameters change suddenly. Affect the stable operation of the power grid. The virtual synchronous generator (VSG) control method simulates the external characteristics of the traditional synchronous generator by introducing a rotor swing equation, constructing a virtual inertia and a frequency modulation command, and providing voltage and frequenc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H02J3/38
CPCH02J3/381H02J2203/20
Inventor 杨成顺杨帆张东东黄宵宁
Owner NANJING INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com