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Frequency converter control method and device, and frequency converter

A frequency converter control and frequency converter technology, applied in the direction of output power conversion devices, electrical components, etc., can solve the problems of high energy consumption and high fault protection costs of high-voltage and high-power motors

Active Publication Date: 2016-12-07
HUAWEI DIGITAL POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The energy consumption of high-voltage and high-power motors is huge. Adding inverter control equipment to them is an important measure for motor energy saving. The existing technology does not consider the fault protection of inverter control equipment, which makes the cost of its fault protection quite high.

Method used

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  • Frequency converter control method and device, and frequency converter
  • Frequency converter control method and device, and frequency converter
  • Frequency converter control method and device, and frequency converter

Examples

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Embodiment Construction

[0075] Embodiments of the present invention provide a frequency converter control method and equipment and a frequency converter, in order to reduce the cost of fault protection of the frequency converter control equipment.

[0076] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0077] Each will be described in detail below.

[0078] The terms "first", "second", "third", "fourth", etc...

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Abstract

The invention discloses a frequency converter controlling method, frequency converter controlling equipment and a frequency converter. The frequency converter controlling equipment comprises a sampling unit, a master control unit, a communication unit and a standby unit, wherein the sampling unit is used for sampling input signals and / or output electric signals of the frequency converter, the master control unit is used for generating control parameters used for controlling the frequency converter according to the electric signals obtained by the sampling unit, the master control unit is used for synchronizing carrier along with the standby unit, and synchronizing non-time sensitive data and / or time sensitive data along with the standby unit, and the standby unit is used for replacing the master control unit to work after the master control unit breaks down. The technical scheme of the frequency converter controlling method, the frequency converter controlling equipment and the frequency converter reduces the cost of breakdown protection of the frequency converter control equipment.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a frequency converter control method and equipment and a frequency converter. Background technique [0002] The frequency converter is a power conversion device that switches the power frequency of the industrial frequency to another frequency through power electronic devices. High-voltage and high-power inverters are widely used in fans, water pumps, compressors, rolling mills, etc. in large-scale mineral water application production plants, petrochemical, municipal water supply, metallurgy, steel, electric energy and other industries. [0003] The energy consumption of high-voltage and high-power motors is huge. Adding inverter control equipment to them is an important measure for motor energy saving. The existing technology does not consider the fault protection of inverter control equipment, which makes the cost of fault protection quite high. Contents of the inve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/00
Inventor 张希戬王恒义于文明
Owner HUAWEI DIGITAL POWER TECH CO LTD
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