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Frequency converter

A frequency converter and exposed copper technology, applied in the field of frequency converters, can solve problems such as different grounding requirements of frequency converters

Active Publication Date: 2020-06-12
ZHEJIANG HECHUAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a frequency converter, which solves the problem that the frequency converter has different requirements for grounding in different application environments

Method used

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Embodiment Construction

[0019] The core of the present invention is to provide a frequency converter, which can choose whether to ground or not ground the circuit in the frequency converter according to the actual application environment of the frequency converter, so as to ensure the working performance of the frequency converter to the greatest extent.

[0020] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. 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.

[0021] Inverter is a kind of commonly used electrical equipment, because there...

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Abstract

The invention discloses a frequency converter, and the frequency converter comprises a shell and a circuit board arranged in the shell, wherein the circuit board is provided with a circuit copper exposing end and a grounding copper exposing end which are disconnected with each other, and the circuit copper exposing end is electrically connected with an electromagnetic interference suppression circuit on the circuit board; the shell is provided with a movable conductive connecting part, the conductive connecting piece penetrates through the shell, and the conductive area can move to be connected or disconnected with the circuit copper exposing end and the grounding copper exposing end at the same time. Therefore, in the frequency converter provided by the invention, the movable conductive connecting part is arranged between the grounding end and the circuit end, so the circuit and the grounding end in the frequency converter can be controlled to be communicated through the conductive connecting part; therefore, the frequency converter can be selected to be grounded or not grounded according to the requirement of an application environment in practical application, so as to achieve the better application performance of the frequency converter.

Description

technical field [0001] The invention relates to the field of frequency converters, in particular to a frequency converter. Background technique [0002] Inverter (Variable-frequency Drive, VFD) is a power control device that uses frequency conversion technology and microelectronics technology to control AC motors by changing the frequency of the motor's operating power supply. The frequency converter is mainly composed of rectification (AC to DC), filter, inverter (DC to AC), braking unit, drive unit, detection unit, micro-processing unit, etc. The frequency converter adjusts the voltage and frequency of the output power supply by switching off the internal IGBT, and provides the required power supply voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation. In addition, the frequency converter has many protection functions , such as overcurrent, overvoltage, overload protection and so on. With the continuous i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/00H02M1/44H05K5/02H05K7/14H01R4/64
CPCH01R4/64H05K5/02H05K5/0247H05K7/1447H05K7/1457
Inventor 王存覃秋敏郑军志
Owner ZHEJIANG HECHUAN TECH
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