Operation control method of multi-machine frequency converter and multi-machine frequency converter

A technology of operation control and frequency converter, which is applied in the field of power electronics and can solve problems such as poor synchronization performance

Active Publication Date: 2018-10-23
SHENZHEN INVT ELECTRIC
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of research and practice, the inventor found that, since multiple single-machine inverters are connected to achieve parallel synchronous operation in the prior art, the multiple single-machine inverters are still relatively independent when working. poor sync performance

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
  • Operation control method of multi-machine frequency converter and multi-machine frequency converter
  • Operation control method of multi-machine frequency converter and multi-machine frequency converter
  • Operation control method of multi-machine frequency converter and multi-machine frequency converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0035] Embodiments of the present invention provide an operation control method in a multi-machine frequency converter and a multi-machine frequency converter, in order to improve the synchronous operation performance of the frequency converters.

[0036] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completel...

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

An operation control method in a multi-machine frequency converter and the multi-machine frequency converter. A multi-machine inverter operation control method, wherein the multi-machine inverter includes a main control unit and M1 execution units that generate synchronization signals, the M1 execution units share a DC bus, and the M1 is greater than 1 positive integer; the method includes: configuring the synchronous input pin source of the PWM controller in each execution unit so that the PWM controller in each execution unit is synchronously zero-crossing; synchronously loading the comparison value; on the above conditions Each execution unit generates a pulse width modulation wave, and drives each execution unit to work. The embodiment of the present invention provides a solution to improve the synchronous operation performance of the frequency converter.

Description

technical field [0001] The invention mainly relates to the technical field of power electronics, and in particular relates to an operation control method of a multi-machine frequency converter and a multi-machine frequency converter. Background technique [0002] At present, most inverters on the market are stand-alone inverters, which use a control unit to directly control an inverter unit. The control unit generally does not control the rectification unit. The specific structure can be as follows: Figure 1-a shown. [0003] The stand-alone inverters need to run in parallel synchronously (that is, the speed / torque of the load motors of at least two stand-alone inverters is the same or corresponding, or the outputs of at least two stand-alone inverters are connected in parallel with load motors or asynchronously to realize the factory macro) At the same time, at least two single-machine inverters form an inverter multi-machine system, and the communication between each inve...

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 Patents(China)
IPC IPC(8): H02M7/493H02P27/08
CPCH02P27/08H02M7/493
Inventor 柯冬生
Owner SHENZHEN INVT ELECTRIC
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