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公开(公告)号：US20240250633A1
公开(公告)日：2024-07-25
申请号：US18099599
申请日：2023-01-20
发明人： Jogendra Singh Thongam , Baoming Ge , Fan Wang , Papiya Bagchi , Serdar Hakki Yonak , Rimma Paransky
IPC分类号： H02P29/68
CPC分类号： H02P29/68
摘要： An electric drive system includes a power electronics module with a DC-DC converter and an inverter. The power electronics modules include a plurality of Silicon Carbide switches. Dynamic models are used to estimate the temperatures of the switch junctions and of the Direct Bond Copper substrate. The dynamic models rely on a coolant flowrate value from a coolant system. If the estimate of the substrate temperature differs substantially from a measured substrate temperature, a controller concludes that the coolant system is not delivering the stated flow rate of coolant and takes remedial action such as reducing motor torque to zero.
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2.发明公开公开(公告)号：US20240109434A1
公开(公告)日：2024-04-04
申请号：US17959635
申请日：2022-10-04
CPC分类号： B60L50/40 , H02J7/00309 , H02J7/345
摘要： After start of an electric drive system, a controller reduces power output of an inverter responsive to sensed temperature of a power switch of the inverter, sensed current of a power electronics module, sensed DC-link voltage, and thermal impedance parameters of a DC-link capacitor being indicative of an estimated temperature of the DC-link capacitor that is greater than a threshold to maintain DC-link capacitor temperature lower than the threshold.
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公开(公告)号：US20230244257A1
公开(公告)日：2023-08-03
申请号：US17590237
申请日：2022-02-01
发明人： Monty J. Anderson , William Robert Brown , Jogendra Singh Thongam , Joseph Sherman Kimmel , Papiya Bagchi
CPC分类号： G05D23/2033 , B60L15/007 , B60L2210/40
摘要： An electric drive system includes a power electronics module (PEM) having a DC-link capacitor and an inverter. A controller reduces power output of the inverter while a sensed temperature of an inverter power switch, a sensed current of the PEM, such as a sensed ripple current of the DC-link capacitor, and parameter values of the DC-link capacitor are indicative of a predicted temperature of the capacitor being greater than a threshold to maintain capacitor temperature lower than the threshold. The parameter values are obtainable from a thermal model of the DC-link capacitor. The thermal model may be derived from testing a test version of the PEM under different drive cycles in which for each drive cycle a set of information is recorded including a sensed temperature of the inverter power switch test version, a current of the PEM test version, and a sensed temperature of the DC-link capacitor test version.
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