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Patent Agency Ranking
公开(公告)号：US11105836B2
公开(公告)日：2021-08-31
申请号：US16746444
申请日：2020-01-17
Inventor： Dino Costanzo , Cheng Pan Cai , Xi Yu Xu
IPC: G01R19/25 , H02P27/08 , H02M1/00 , G01R15/14 , H02M7/5387
Abstract: A three-phase load is powered by a PWM (e.g., SVPWM) driven DC-AC inverter having a single shunt-topology. A shunt voltage and a branch voltage of the inverter (across a transistor to be calibrated) are measured during a second period of each SVPWM sector, and the drain-to-source resistance of the calibrated transistor is calculated. During the fourth period of each SVPWM sector, the branch voltage is measured again, and another branch voltage across another transistor is measured. Using the drain-to-source resistance of the calibrated transistor and the voltage across the calibrated transistor measured during the fourth period, the phase current through the calibrated transistor is calculated. Using the other branch voltage measured during the fourth period and the drain-to-source resistance of its corresponding transistor (known from a prior SVPWM sector), the phase current through that transistor is calculated. From the two calculated phase currents, the other phase current can be calculated.
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公开(公告)号：US11757345B2
公开(公告)日：2023-09-12
申请号：US17646934
申请日：2022-01-04
Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.
Inventor： Dino Costanzo , Xiyu Xu , Chengpan Cai
CPC classification number: H02M1/0009 , H02M7/493 , H02P5/505 , H02P5/685
Abstract: An apparatus includes a first inverter configured to drive a first motor having a plurality of phases, the first inverter comprising a plurality of inverter legs, each of which is coupled to a corresponding phase of the first motor, a second inverter configured to drive a second motor having a plurality of phases, the second inverter comprising a plurality of inverter legs, each of which is coupled to a corresponding phase of the second motor, and a first current sensor configured to sense currents flowing in the first inverter and the second inverter, wherein the first current sensor is shared by at least by two inverter legs.
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公开(公告)号：US12264976B2
公开(公告)日：2025-04-01
申请号：US17836817
申请日：2022-06-09
Applicant: STMicroelectronics (Shenzhen) R&D Co., Ltd. , STMicroelectronics (China) Investment Co., Ltd.
Inventor： Dino Costanzo , Yan Zhang , Guixi Sun
Abstract: 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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公开(公告)号：US20230216394A1
公开(公告)日：2023-07-06
申请号：US17646934
申请日：2022-01-04
Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.
Inventor： Dino Costanzo , Xiyu Xu , Chengpan Cai
CPC classification number: H02M1/0009 , H02P5/685 , H02P5/505 , H02M7/493
Abstract: An apparatus includes a first inverter configured to drive a first motor having a plurality of phases, the first inverter comprising a plurality of inverter legs, each of which is coupled to a corresponding phase of the first motor, a second inverter configured to drive a second motor having a plurality of phases, the second inverter comprising a plurality of inverter legs, each of which is coupled to a corresponding phase of the second motor, and a first current sensor configured to sense currents flowing in the first inverter and the second inverter, wherein the first current sensor is shared by at least by two inverter legs.
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公开(公告)号：US11635453B2
公开(公告)日：2023-04-25
申请号：US17378226
申请日：2021-07-16
Inventor： Dino Costanzo , Cheng Pan Cai , Xi Yu Xu
IPC: G01R19/25 , H02P27/08 , H02M1/00 , G01R15/14 , H02M7/5387
Abstract: A three-phase load is powered by a PWM (e.g., SVPWM) driven DC-AC inverter having a single shunt-topology. A shunt voltage and a branch voltage of the inverter (across a transistor to be calibrated) are measured during a second period of each SVPWM sector, and the drain-to-source resistance of the calibrated transistor is calculated. During the fourth period of each SVPWM sector, the branch voltage is measured again, and another branch voltage across another transistor is measured. Using the drain-to-source resistance of the calibrated transistor and the voltage across the calibrated transistor measured during the fourth period, the phase current through the calibrated transistor is calculated. Using the other branch voltage measured during the fourth period and the drain-to-source resistance of its corresponding transistor (known from a prior SVPWM sector), the phase current through that transistor is calculated. From the two calculated phase currents, the other phase current can be calculated.
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