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US 10,240,983 B2Granted
Method of estimating junction temperature of converter for vehicle
AssigneeHyundai Motor Company
InventorsGi Bong Son, Heon Young Kwak
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AssigneeHyundai Motor Company
InventorsGi Bong Son, Heon Young Kwak
Estimating the term…
A method of estimating a junction temperature of a converter for a vehicle includes: calculating, by a vehicle controller, an IGBT power loss value of the converter using an input current and an input voltage between a battery and the converter, an output voltage output from the converter to an inverter, and a duty ratio and an IGBT characteristic value of the converter.
A method of estimating a junction temperature of a converter for a vehicle, comprising the steps of:
A system of estimating a junction temperature of a converter for a vehicle, comprising:
A non-transitory computer readable medium containing program instructions executed by a processor, the computer readable medium comprising:
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using…: using…
Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using…: circuits…
Application of thermometers in motors
Temperature measurement using electric or magnetic components already present in the system
About 10 years of term left · ends 18 Oct 2036 (estimated)
The present application claims under 35 U.S.C. § 119(a) the benefit of Korean Patent Application No. 10-2015-0085417 filed on Jun. 16, 2015, which is incorporated by reference herein in its entirety.
(a) Technical Field
The present invention relates to a method of estimating a junction temperature of a converter for a vehicle by applying a duty ratio in a different manner depending on a load region of the converter.
The above and other objects, features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a configuration diagram among a battery, a converter, and an inverter according to an exemplary embodiment of the present invention;
FIG. 2 is an input current and converter PWM graph depending on a load region of a converter according to an exemplary embodiment of the present invention; and
Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.
As illustrated in FIGS. 1 and 3, a controller 700 of a vehicle uses an input current 110 and an input voltage 120 which are input from a battery 100 to a converter 130, an output voltage 140 which is output from the converter 130 to an inverter 150, and a duty ratio and an IGBT characteristic value of the converter to calculate an IGBT power loss value of the converter 130. A unit of the IGBT power loss value is watts [W].
Hereinafter, a junction temperature of a converter for the vehicle is estimated by multiplying a thermal coefficient of resistance and a conversion coefficient of the converter by the IGBT power loss value derived from the vehicle controller 700 and then summing a temperature value of cooling water of the converter and the multiplied value.