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

Method for fixing turn-on angle and optimizing turn-off angle of switched reluctance generator

A technology of switched reluctance and turn-off angle, which is applied in the field of switched reluctance generator with fixed turn-on angle and optimized turn-off angle, which can solve the problems of lack of versatility, lack of theoretical basis, and changes.

Inactive Publication Date: 2009-10-14
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] ①At present, domestic and foreign scholars' research on the angle control of switched reluctance generators is mainly focused on optimizing the opening and closing angles to obtain the maximum output power through simulation and experiments. This optimization method relies on experience accumulation and practice, and to a certain extent lack of theoretical basis
[0004] ②The traditional angle optimization method requires multiple simulations and experiments to obtain results, the process is complex and the workload is heavy
[0005] ③The conclusion of the traditional angle optimization method is only valid for the motor object that is simulated and tested, and it is not universal. When the motor object changes, it is necessary to re-simulate and experiment
[0006] ④ The results of the traditional angle optimization method vary with the simulation conditions and experimental environment, and its accuracy is limited by the number of simulations and experiments

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
  • Method for fixing turn-on angle and optimizing turn-off angle of switched reluctance generator
  • Method for fixing turn-on angle and optimizing turn-off angle of switched reluctance generator
  • Method for fixing turn-on angle and optimizing turn-off angle of switched reluctance generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] The method of the present invention is divided into the following steps: 1. initialization inductance parameter L max , K, θ 1 , θ 2 , θ 4 , θ 6 , and the opening angle corresponding to the origin of the coordinates is determined accordingly. Note that the origin of the coordinates should be in the rising section of the inductance (see attached Figure 7 ). 2. Judging whether the initialization is reasonable, if it is reasonable, calculate the cut-off angle range, otherwise return to step 1 and re-initialize, the process of this step is shown in the appendix Figure 6 . 3. Calculate D, f(x 1 ), f(x 2 ), f(D), f′(x 1 ), f′(x 2 ), f'(D). 4. Find the cut-off angle corresponding to the maximum average electromagnetic power. When D changes between the origin and the axis of symmetry, if it falls in the middle of the cut-off angle interval (see appendix Figure 8Figure a), use Calculation 1 to solve the cut-off angle; if it falls on the left side of the cut-off an...

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 discloses a method for fixing a turn-on angle and optimizing a turn-off angle of a switched reluctance generator, belonging to the technical field of control of the switched reluctance generators. The method is as follows: 1. a phase current expression is firstly derived according to a voltage equation of the switched reluctance generator, an average electromagnetic power expression in a cycle is calculated by integration based thereon, and a factor which is only related to the turn-on angle and the turn-off angle is separated therefrom. 2. The turn-on angle is then fixed, the turn-off angle changes in a reasonable range, the factor is taken as a single-variable function of the turn-off angle, and the turn-off angle which is corresponding to the maximum value is solved by three situations according to the features of a high order derivative thereof. The method is based on the theory, simple and easy to operate and good in universality.

Description

technical field [0001] The invention relates to a method for optimizing the cut-off angle by fixing the opening angle of a switched reluctance generator, and belongs to the technical field of switched reluctance generator control. Background technique [0002] The control of switched reluctance generator is usually divided into three types: current chopping control, voltage PWM control and angle position control. [0003] ①At present, domestic and foreign scholars' research on the angle control of switched reluctance generators is mainly focused on optimizing the opening and closing angles to obtain the maximum output power through simulation and experiments. This optimization method relies on experience accumulation and practice, and to a certain extent Lack of theoretical basis. [0004] ②The traditional angle optimization method requires multiple simulations and experiments to obtain the results, which is complicated and requires a lot of work. [0005] ③The conclusion ...

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): H02P9/00
Inventor 姚瑱邓智泉曹鑫蔡骏庄铮
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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