T-source type variable-frequency speed adjustment system

A variable frequency speed regulation, source type technology, applied in the control system, electrical components, AC motor control and other directions, can solve the problems of high cost, complex structure, low efficiency, etc., to achieve the effect of compact structure, high efficiency and high reliability

Inactive Publication Date: 2013-02-13
HARBIN EAST ALARM EQUIP DEV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a T-source type frequency conversion speed regulation system to drive an AC motor with a higher rated voltage with a lower fluctuating DC power supply, and to solve the problems of low efficiency, complex structure, and high cost of the existing solutions. question

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
  • T-source type variable-frequency speed adjustment system
  • T-source type variable-frequency speed adjustment system
  • T-source type variable-frequency speed adjustment system

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0013] Specific implementation mode one: Combine below Figure 1 to Figure 4 This embodiment will be specifically described. figure 1 It is the schematic diagram of the T source type frequency conversion speed regulation system, and its composition includes a diode (1) at the DC positive input terminal, a transformer (2), a filter capacitor (3), an inverter (4), a speed sensor (5), a level Conversion circuit (6), AC current detection circuit (7), bias circuit (8), DC voltage detection circuit (9), low-pass filter circuit (10), main controller (11) and isolation drive circuit (12) ;

[0014] The anode of the diode (1) is connected to the positive output terminal of the external DC power supply as the positive input terminal of the T-source AC inverter power supply, and the cathode of the diode (1) is connected to the input terminal of the transformer (2) , the first output terminal of the transformer (2) is connected to the DC positive input terminal of the inverter (4), th...

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 T-source type variable-frequency speed adjustment system and belongs to the field of electric energy conversion. The T-source type variable-frequency speed adjustment system comprises a diode of a direct current positive electrode input end, a transformer and a filter capacitor which are on a direct current side, and an inverter which is on an output side and used for converting direct current voltage and converting direct current to alternating current, as well as an alternating current detection circuit, a biasing circuit, a speed sensor, a level conversion circuit, a direct current voltage detection circuit, a low-pass filter circuit, a main controller and an isolation driving circuit, which are used for controlling direct current voltage and motor rotating speed. The diode, the transformer and the filter capacitor are added on the direct current side; the inverter is used to generate a straight through state, so that boosting and stabilization of the direct current voltage can be controlled, and an alternating current motor with relatively high rated voltage can be driven to run by using relatively low direct current voltage according to a motor control algorithm. A one-stage circuit structure and fewer energy storage elements are used to implement boosting and stabilization control of the direct current voltage and running control of the alternating current motor; and the T-source type variable-frequency speed adjustment system has the advantages of compact structure, high direct current voltage utilization rate, high reliability and the like.

Description

technical field [0001] The invention relates to a T-source type frequency conversion speed regulation system, which belongs to the field of electric energy conversion and is used for converting a lower DC voltage into a higher stable DC voltage and driving an AC motor to run. Background technique [0002] As a device for converting electrical energy into mechanical energy, AC motors have been widely used in daily life and industrial production. In today's society, with the development of renewable energy power generation technology and other distributed power generation technologies, the forms of power supply are characterized by diversity. The power supply form of the AC motor and its speed control system is not limited to the power supply only by the public power grid, but also needs to be powered by a power source that adapts to low voltage and large fluctuation characteristics. For example, in remote areas without a public power grid, you can use Photovoltaic battery is...

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): H02P27/08
Inventor 李宣南朴顺善刘维良
Owner HARBIN EAST ALARM EQUIP DEV
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