Electric motor dynamic load control device

A control device and dynamic load technology, which is applied in the direction of motor generator testing, etc., can solve problems such as high energy consumption, inconvenient adjustment of load power, and inability to test the performance of motors, so as to optimize the control system and control process, and the energy saving effect is obvious , start the smooth effect

Inactive Publication Date: 2008-07-09
HUBEI OUAN ELECTRICAL
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. When the industrial power grid is used for direct power supply, because the frequency of the industrial power grid is fixed, it is not possible to conduct a performance test of the motor when the frequency changes
[0004] 2. For large-scale motor tests, a large power load device is required, and the energy consumption in the test is high
[0005] 3. During the test, it is not convenient to adjust the load power

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
  • Electric motor dynamic load control device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] As shown in Figure 1, the DC speed control system adopts digital high-power DC motor speed control device, which is composed of DC motor control devices KG-1 and KG-2, and DC excitation control device KG-3. DC motor KG-1 and The power supply of KG-2 is provided by a 50HZ, 6 kV power grid, and the DC excitation control device KG-3 is provided by a 50HZ, 380V power grid. The digital high-power DC motor speed control device is an existing technology, and the DC motor control device KG- 1, KG-2 and DC motor excitation control device KG-3, the DC speed regulating device provides working power for the frequency conversion feedback power supply, and the frequency conversion feedback power supply is a DC motor ZD 1 Drive the synchronous generator TF to run, and the electric energy output by the synchronous generator TF is the measured asynchronous motor YD 1 Provide working power, the asynchronous motor YD under test 1 With a test motor YD 2 Coaxial connection, accompanying t...

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 relates to a dynamic load control device of motor, which belongs to the field of electric drive control technology, in particular to a dynamic operation test control device of motor. The invention solves the problems of prior control device, such as large impulse current to a power grid, high energy consumption in test and inconvenient adjustment of load power. The technique scheme of the invention is that the invention includes a DC speed regulating device and a frequency-variable feedback power supply, and the DC speed regulating device provides a working power supply for the frequency-variable feedback power supply. Compared with prior art, the invention has the advantages of (1) optimized control system and control process; (2) stable start of equipment to prevent overlarge impulse current to the power grid in the start process of the equipment; (3) significant energy saving effect; and (4) improved field working environment.

Description

technical field [0001] The invention belongs to the technical field of electric transmission control, and in particular relates to a dynamic operation test control device of an electric motor. Background technique [0002] At present, the load equipment used by domestic motor manufacturers in the dynamic operation test of the motor is generally a mechanical load or a magnetic load. Using this load control method is to supply power to the test motor from the industrial grid, or to the test motor through a frequency conversion control device. Power supply, and then the test motor drives the load equipment to run. This control method has several disadvantages: [0003] 1. When the industrial power grid is used for direct power supply, because the frequency of the industrial power grid is fixed, it is not possible to conduct a performance test of the motor when the frequency changes. [0004] 2. For the test of large motors, a large power load device is required, and the energ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/34
Inventor 冯浩源叶俊
Owner HUBEI OUAN ELECTRICAL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap