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Elevator frequency converter 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: 2020-02-04
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 frequency converter IGBT module short circuit protection device
  • Elevator frequency converter IGBT module short circuit protection device

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Embodiment Construction

[0027] In the following, the technical solutions of the present invention will be further described in detail through embodiments and in conjunction with the drawings. In the specification, the same or similar reference numerals indicate 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, and should not be understood as a limitation to the present invention.

[0028] In addition, in the following detailed description, for the convenience of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. Obviously, however, one or more embodiments can also be implemented without these specific details. In other cases, well-known structures and devices are shown in the form of illustrations to simplify the drawings.

[0029] According to a g...

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Abstract

The invention discloses an elevator frequency converter IGBT module short circuit protection device. The device comprises a detection unit used for detecting whether an IGBT module of an elevator frequency converter is short-circuited; and a control unit control unit adapted to cut off an alternating current power supply line between the elevator frequency converter and a main power supply of an elevator machine room when the detection unit detects that the IGBT module is short-circuited, thereby stopping supplying power to the elevator frequency converter. According to the elevator frequencyconverter IGBT module short circuit protection device provided by the 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, so that a fire accident caused by short circuit of the IGBT module can be avoided.

Description

Technical field [0001] The invention relates to an elevator inverter 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, special braking resistors must be configured to dissipate heat. The braking resistor will only work during the braking process of the elevator main engine, and when the elevator main engine is running, the braking resistor is disconnected from the power supply and does not work. [0003] In the prior art, the elevator inverter has a braking IGBT module for controlling the connection and disconnection of the braking resistor and the power supply. If the brake IGBT module has a short-circuit fault, the electrical connection between the brake resistor and the power supply cannot be cut off. As a result, the brake resistor is alway...

Claims

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Application Information

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