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a frequency converter

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

Active Publication Date: 2021-03-30
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, which includes a casing and a circuit board arranged inside the casing; the circuit board is provided with mutually disconnected circuit exposed copper terminals and grounding exposed copper terminals, wherein the circuit exposed copper terminals and the circuit board suppress electromagnetic Interfering with the electrical connection of the circuit; there is a movable conductive connector on the casing, the conductive connector is set through the casing, and the conductive area can be moved to connect or disconnect with the exposed copper end of the circuit and the exposed copper end of the ground at the same time. For this reason, in the frequency converter provided by this application, a movable conductive connector is provided between the ground terminal and the circuit terminal, so that the communication between the circuit in the frequency converter and the ground terminal can be controlled through the conductive connector, then, In practical application, the inverter can be grounded or not grounded according to the needs of the application environment, so as to achieve better application performance of the inverter.

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 Patents(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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