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Frequency converter control method and system, frequency converter

A frequency converter control and frequency converter technology, applied in the field of frequency converters, can solve the problems such as the failure of the slave station to switch to the master station normally, the frequency converter stopping communication, etc.

Active Publication Date: 2018-01-02
SHENZHEN HPMONT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the traditional master-slave switching scheme, there is a problem that once the master station is damaged or power-off, the slave station cannot be switched to the master station normally, thus causing all the inverters on the bus to stop communicating

Method used

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

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Embodiment Construction

[0043] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of ...

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Abstract

A frequency converter control system comprises frequency converters 1,2, 3.. and N; a method comprises the following steps: detecting main frequency converter conditions in front of a local address; automatically switching into a main station according to the frequency converters 1,2,3.. and N priority sequence if the main frequency converter fails and no communication instruction frame is generated. Once the main station is damaged or in power failure, the problems of a slave station unabling to switch to the main station can be solved, and the frequency converter on a bus can keep communicating. The invention also discloses the frequency converter control system, the frequency converter control method, and related frequency converters.

Description

technical field [0001] The invention relates to the field of frequency converters, in particular to a frequency converter control method and system, and a frequency converter. Background technique [0002] In the current inverter master-slave control system, the inverter is generally used as a communication slave station, and a programmable logic controller (PLC, Programmable Logic Controller) or industrial computer is used as a master station. Even if a small number of frequency converters can communicate as the master station, the master station-slave station switching scheme is a scheme that completely relies on the master station alarm and then is identified by the slave station. In the traditional master-slave switching scheme, there is a problem that once the master station is damaged or power-off, the slave station cannot be switched to the master station normally, thus causing all the inverters on the bus to stop communicating. Contents of the invention [0003] B...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/042
CPCG05B19/0421G05B2219/2231
Inventor 张宁
Owner SHENZHEN HPMONT TECH
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