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Compensation circuit, commutation cell and power converter controlling turn-on and turn-off of a power electronic switch

A power electronic switch and compensation circuit technology, applied in output power conversion devices, electronic switches, conversion of DC power input to DC power output, etc., can solve problems such as the end of life of power converters and the aging of parallelized power electronic switches.

Active Publication Date: 2016-07-27
TM4 INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This generally leads to premature aging of some parallelized power electronic switches, leading to premature end of life of the power converter

Method used

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  • Compensation circuit, commutation cell and power converter controlling turn-on and turn-off of a power electronic switch
  • Compensation circuit, commutation cell and power converter controlling turn-on and turn-off of a power electronic switch
  • Compensation circuit, commutation cell and power converter controlling turn-on and turn-off of a power electronic switch

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Experimental program
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Embodiment Construction

[0043] Aspects of the present disclosure generally address one or more of the problems associated with the variable characteristics of power electronic switches.

[0044] Circuits operable to limit the overvoltage in the rectifier unit especially when the IGBT is turned off are described in International Patent Publication No. WO2013 / 082705A1, International Patent Application No. PCT / CA2013 / 000805, US Provisional Application No. 61 / 808,254, No. 61 / 898,502, No. 61 / 904,038, No. 61 / 905,045 and No. 61 / 904,050 and available from http: / / www.advbe.com / docs / DeciElec2013-JeanMarcCyr-TM4.pdf "Reducing switching losses and increasing IGBT drive efficiency with Reflex TM gated driver technology" in its entirety by Jean-Marc Cyr et al., the disclosures of which are hereby incorporated by reference.

[0045] The present technique provides control of overvoltage and switching losses during turn-off and turn-on of the power electronic switches of the rectifier unit. The circuits and method...

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Abstract

The present disclosure relates to a compensation circuit for independently controlling turn-on and turn-off of a power electronic switch through a gate driver. The compensation circuit includes a circuit path sampling a first portion of a voltage induced across an inductance of the power electronic switch at turn-on. Another circuit path samples a second portion of the voltage induced across the inductance of the power electronic switch at turn-off. The compensation circuit further includes a gate driver reference connection configured to respectively supply the sampled portions of the voltage during turn-on and turn-off of the power electronic switch. A compensation circuit controlling a first power electronic switch in parallel with a second power electronic switch, a commutation cell and a power converter having a pair of parallel legs, in which each power electronic switch is provided with the compensation circuit, are also disclosed.

Description

technical field [0001] This disclosure relates to the field of power electronics. More specifically, the present disclosure relates to a compensation circuit, a commutation unit, and a power converter that control switching on and off of a power electronic switch. Background technique [0002] Rectification units are commonly used in electronic systems that need to convert voltage sources, including DC-DC converters and DC-AC converters commonly known as inverters. In the case of limited space allowed for power converter circuits such as those used in electrical and / or electrical hybrid automation applications, and given the high cost of semiconductors, the integration of these rectification units demand increased. [0003] One known way of reducing the space occupied by semiconductors in power converter circuits is to increase their efficiency, thereby allowing the size of their cooling surfaces to be reduced. [0004] Losses in power electronic switches that occur in co...

Claims

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Application Information

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IPC IPC(8): H02M1/00H02M1/08H02M3/155H03K17/08
CPCH02M1/08H02M3/155H02M3/335H02M7/537H03K17/0828H03K17/165H03K17/168H03K2217/0027H02M1/0009H02M1/0058Y02B70/10H02M3/158
Inventor M.阿马尔J-M.西尔M.埃尔雅各比P.弗勒里
Owner TM4 INC
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