Inverter and method to measure junction temperature for thermal protection

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12264976
APP PUB NO 20230400359A1
SERIAL NO

17836817

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Abstract

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A three-phase load is powered by an SPWM driven inverter having a single shunt-topology. During operation, drain-to-source resistances of transistors of each branch of the inverter are determined. Interpolation is performed on assumed drain-to-source resistances of the transistors for different temperatures to produce a non-linear model of drain-to-source resistance to temperature for the transistors, and the drain-to-source resistances determined during operation and the non-linear model are used to estimate temperature values of the transistors. Driving of the inverter can be adjusted so that conductivity of each branch is set so that power delivered by that branch is as high as possible without exceeding an allowed drain current threshold representing a threshold junction temperature. In addition, driving of the inverter can be ceased if the temperature of a transistor exceeds the threshold temperature.

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Patent Owner(s)

Patent OwnerAddress
STMICROELECTRONICS (SHENZHEN) R&D CO LTD518057 EAST B501 SOUTH B502 NORTH B503 6 \/ F BLOCK B TCL INDUSTRIAL RESEARCH INSTITUTE BUILDING 006 GAOXIN SOUTH 1ST ROAD YUEHAI STREET NANSHAN DISTRICT SHENZHEN CITY GUANGDONG PROVINCE SHENZHEN CITY GUANGDONG PROVINCE 518057

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Costanzo, Dino Catania, IT 11 38
Sun, Guixi Shanghai, CN 1 0
Zhang, Yan Shanghai, CN 881 7426

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