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Elevator inverter igbt module short circuit protection device

A short-circuit protection and frequency converter technology, applied in emergency protection circuit devices, electrical components, etc., can solve the problems of control cabinet fire, heat can not be dissipated, etc., to achieve the effect of avoiding fire accidents

Active Publication Date: 2022-03-15
SCHINDLER (CHINA) ELEVATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the braking IGBT module has a short-circuit fault, the electrical connection between the braking resistor and the power supply cannot be cut off, resulting in the braking resistor being in a working state all the time, and the accumulated heat cannot be dissipated, which will cause a serious fire in the control cabinet. disaster aftermath

Method used

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  • Elevator inverter igbt module short circuit protection device
  • Elevator inverter igbt module short circuit protection device

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Embodiment Construction

[0027] The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals designate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention, but should not be construed as a limitation of the present invention.

[0028] In addition, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a comprehensive understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in diagrammatic form to simplify the drawings.

[0...

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Abstract

The invention discloses a short-circuit protection device for an elevator frequency converter IGBT module, comprising: a detection unit for detecting whether the IGBT module of the elevator frequency converter is short-circuited; and a control unit suitable for detecting that the IGBT module is short-circuited by the detection unit Cutting off the AC power supply line between the elevator frequency converter and the main power supply of the elevator machine room, thereby stopping the power supply to the elevator frequency converter. In the present invention, when the IGBT module of the elevator frequency converter is short-circuited, the power supply of the entire elevator frequency converter can be cut off in time, thereby avoiding fire accidents caused by the short-circuit of the IGBT module.

Description

technical field [0001] The invention relates to an elevator frequency converter IGBT module short-circuit protection device. Background technique [0002] Elevator inverter is one of the core components of elevator control. Elevator inverters are mainly divided into two types: energy consumption type and energy feedback type. For energy-consuming elevator inverters, a dedicated braking resistor must be configured to dissipate heat. The braking resistor will only work during the braking process of the elevator host, and during the operation of the elevator host, the braking resistor is disconnected from the power supply and does not work. [0003] In the prior art, the elevator frequency converter has a braking IGBT module for controlling the connection and disconnection of the braking resistor with the power supply. If the braking IGBT module has a short-circuit fault, the electrical connection between the braking resistor and the power supply cannot be cut off, resulting...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/12
CPCH02H7/12H02H7/1216
Inventor 隋峰
Owner SCHINDLER (CHINA) ELEVATOR CO LTD