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

Voltage compensation device

A voltage compensation and compensation circuit technology, which is applied in the direction of AC network voltage adjustment, output power conversion device, electrical components, etc., can solve the problems that hinder the simplification of the device structure, and achieve the effect of simplifying the circuit structure, small and cheap device structure

Inactive Publication Date: 2005-10-05
MITSUBISHI ELECTRIC CORP
View PDF1 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This hinders the simplification of the device configuration

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
  • Voltage compensation device
  • Voltage compensation device
  • Voltage compensation device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Embodiment 1

[0019] Embodiment 1 of the present invention will be described below. figure 1 It is a schematic configuration diagram of the voltage compensating device according to Embodiment 1 of the present invention.

[0020] Such as figure 1 As shown, the compensation circuit 2 , which is the voltage generating part, is connected in series with the AC power source 1 , and the compensation circuit 2 outputs a compensation voltage which is superimposed on the power supply voltage to compensate the voltage variation of the load 3 . Also, the short-circuit switch 4 of the bypass compensation circuit 2 is connected in parallel with the compensation circuit 2 . In addition, based on information from the voltage detection unit 5 that monitors the power supply voltage, the control unit 6 generates a control signal to control the short-circuit switch 4 and the switching elements in the compensation circuit 2 to perform power supply control. 7 is a circuit breaker provide...

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 obtains a voltage compensator for compensating voltage variation of a load 3 by superposing a compensation voltage outputted from a compensation circuit 2 on a power supply voltage in which unnecessary voltage compensation operation is stopped by quickly detecting turn-off of a breaker provided in the upstream. A voltage detecting section 5 for detecting a power supply voltage has a means for detecting the phase of the power supply voltage. When the phase of the power supply voltage varies more than a predetermined amount from a reference phase during compensation operation, a decision is made that a breaker in the upstream is turned off and compensation operation is ended.

Description

field of invention [0001] The present invention relates to a voltage compensating device which superimposes a compensation voltage on the power supply voltage to compensate for the voltage drop when the power supply voltage supplied to a load drops. Background technique [0002] The instantaneous drop of the power system voltage caused by lightning or the like will cause malfunction or temporary stoppage of precision equipment in factories, etc., often causing great damage to the production line. In order to prevent such hazards, a voltage fluctuation compensating device that monitors voltage fluctuations such as instantaneous voltage dips (hereinafter referred to as dips) in the power system and compensates for voltage fluctuations is used. [0003] A conventional voltage fluctuation compensating device is composed of a plurality of voltage compensating circuits connected in series to a power system and outputting a compensating voltage with either positive or negative pola...

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): H02J3/12H02J3/38H02M5/293H02M7/42
Inventor 畠山善博冈田丈二
Owner MITSUBISHI ELECTRIC CORP
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