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Power converter configured for limiting switching overvoltage

A technology for power converters and limited switching, applied in high-efficiency power electronic conversion, conversion of AC power input to DC power output, electronic switches, etc.

Active Publication Date: 2016-07-13
TM4 INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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Method used

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  • Power converter configured for limiting switching overvoltage
  • Power converter configured for limiting switching overvoltage
  • Power converter configured for limiting switching overvoltage

Examples

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Embodiment Construction

[0041] Aspects of the present disclosure generally address one or more of the problems of overvoltage existing in power converters when switching.

[0042] Circuits operable to limit overvoltage in the commutated battery, particularly 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, 61 / 898,502 and 61 / 904,038, and in http: / / www.advbe.com / docs / DeciElec2013-Jean_Marc_Cyr-TM4.pdf Available "ReducingswitchinglossesandincreasingIGBTdriveefficiencywithReflex TM gated driver technology", the authors in their entirety being Jean-Marc Cyr et al., the disclosures of which are hereby incorporated by reference.

[0043] The present technique provides control of overvoltage and switching losses at the turn-off of the power electronic switches commutating the battery. The circuits and methods presented here are generally compatible with othe...

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Abstract

The present disclosure relates to a power converter configured for limiting switching overvoltage. The power converter comprises a pair of commutation cells. Each commutation cell includes a power electronic switch and a gate driver connected to a gate of the power electronic switch. A reference of the gate driver of a first commutation cell is connected to a ground of the power converter while a reference of the gate driver of a second commutation cell is connected to a collector of the power electronic switch of the first commutation cell. The gate driver of the second commutation cell has no negative voltage power input, either through using a single voltage power supply or by connecting a negative voltage connection of the dual voltage power supply to ground.

Description

technical field [0001] The present disclosure relates to the field of power electronics. More specifically, the present disclosure relates to power converters configured to limit switching overvoltage. Background technique [0002] Commutation cells are commonly used in electronic systems that require commutation of voltage sources, including both DC-DC converters and DC-AC converters, often referred to as inverters. With limited space reserved for power converter circuits such as those used in electric and / or electric hybrid vehicle applications, and given the high cost of semiconductors, the need for integration of these commutated batteries increases. [0003] A known way of reducing the space occupied by semiconductors in power converter circuits is to increase their efficiency, allowing the size of cooling surfaces to be reduced. [0004] Losses in power electronic switches present in conventional power converter circuits are mainly caused by two sources; conduction l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/538H03K17/08H02M1/00
CPCH02M7/538H03K17/08128H03K17/0828H03K2217/0063H03K2217/0072H02M1/0054Y02B70/10H02M1/32H02M7/537
Inventor J-M·西尔
Owner TM4 INC
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