Network source converting and voltage-stabilizing device

A technology of voltage stabilizer and grid power supply, applied in the electrical field, can solve the problems of high cost, low conversion efficiency, grid pollution, etc., and achieve the effects of low cost, high conversion efficiency and high conversion efficiency

Inactive Publication Date: 2012-07-11
WUHAN UNIV OF TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a power grid power conversion and voltage stabilization device to solve the p

Method used

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  • Network source converting and voltage-stabilizing device

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Embodiment Construction

[0029] The grid power conversion and voltage stabilization device provided by the invention is used to convert the domestic grid power into other international power sources, and keep the voltage stable when the load changes. The motor is powered by the grid power supply, and the motor and the three-phase AC generator are connected through a coupling to realize grid power conversion. When the load changes, the excitation current in the excitation coil of the generator is controlled by this device, so as to control the generator caused by the load. Output voltage variations are compensated. The grid power conversion and voltage stabilization device includes a transformer, a voltage amplitude detection circuit, a voltage frequency detection circuit, a load current detection circuit, a manual control circuit, a main controller, an IGBT drive circuit and its modules, an adder circuit, a display system, a remote surveillance system. The invention has high conversion efficiency, st...

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Abstract

The invention relates to a network source converting and voltage-stabilizing device which is used for converting a domestic network source into other international different standards of power supplies and stabilizing the voltage when a load changes. An electric motor is powered by the network source; the electric motor is connected with a three-phase alternating current (AC) generator through a coupling so as to realize the conversion of the network source; and the size of an excitation current in an excitation coil of the generator is controlled by the device when the load changes, so that the change of the output voltage of the generator caused by the load is compensated. The network source converting and voltage-stabilizing device comprises a transformer, a voltage amplitude detection circuit, a voltage frequency detection circuit, a load current detection circuit, a manual control circuit, a main controller, an IGBT (Insulated Gate Bipolar Transistor) driving circuit, an IGBT driving module, an adder circuit, a display system and a remote monitoring system. According to the network source converting and voltage-stabilizing device, the conversion efficiency is high, the voltage of an output power supply is stable, and the network source converting and voltage-stabilizing device can be remotely monitored, so that the network source converting and voltage-stabilizing device has the advantages of high safety, strong practicability, and easiness for the promotion and application in port ultra-high-power grid power conversion plants.

Description

technical field [0001] The invention belongs to the electric power conversion technology in the field of electric engineering, and is a device for converting domestic power grid power into other different international standard power sources and maintaining voltage stability when the load changes. Background technique [0002] In large ports or docks, the hustle and bustle of ships not only brings economic benefits, but also brings huge pollution. Ships berthing at wharves can generally be powered by shore power. However, due to the different power grid systems at home and abroad, for example, the power supply in Japan is 100V, and the power supply in Europe is 127V, 230V, etc., so there is a matching problem. Its own generators generate electricity, so diesel emissions are particularly polluting to the port. With the increasing emphasis on environmental protection, using clean energy to power ships has become the only solution. Because all kinds of clean energy are finall...

Claims

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Application Information

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IPC IPC(8): H02P9/38
Inventor 陈永泰陈永安程全红覃途远唐静
Owner WUHAN UNIV OF TECH
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