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公开(公告)号：US11689142B2
公开(公告)日：2023-06-27
申请号：US17643831
申请日：2021-12-12
Applicant: Deere & Company
Inventor： Lauren M. White , Long Wu , Lav Thyagarajan , Danielle Li , Scott C. Johnson
Abstract: A control module comprises software instructions for execution by an electronic data processor. An inductance estimator is configured to estimate direct inductance and quadrature inductance associated with the electric machine based on a first set of equations that assume constant rotor resistance and constant magnetic flux. A torque estimator is configured to estimate an observed torque associated with a rotor of the electric machine based a commanded direct-axis voltage and a commanded quadrature-axis voltage, where the observed torque is proportional to the observed power consumption of the electric machine. A pulse-width-modulation (PWM) module is configured to provide pulse-width modulated signals to the electric machine based on the commanded direct-axis voltage and a commanded quadrature-axis voltage. A back-electromotive force adjustment is derived from an estimated, observed torque and a commanded torque.
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Patent Agency Ranking
公开(公告)号：US20220376642A1
公开(公告)日：2022-11-24
申请号：US17643831
申请日：2021-12-12
Applicant: Deere & Company
Inventor： Lauren M. White , Long Wu , Lav Thyagarajan , Danielle Li , Scott C. Johnson
Abstract: A control module comprises software instructions for execution by an electronic data processor. An inductance estimator is configured to estimate direct inductance and quadrature inductance associated with the electric machine based on a first set of equations that assume constant rotor resistance and constant magnetic flux. A torque estimator is configured to estimate an observed torque associated with a rotor of the electric machine based a commanded direct-axis voltage and a commanded quadrature-axis voltage, where the observed torque is proportional to the observed power consumption of the electric machine. A pulse-width-modulation (PWM) module is configured to provide pulse-width modulated signals to the electric machine based on the commanded direct-axis voltage and a commanded quadrature-axis voltage. A back-electromotive force adjustment is derived from an estimated, observed torque and a commanded torque.
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公开(公告)号：US12049148B2
公开(公告)日：2024-07-30
申请号：US17380272
申请日：2021-07-20
Applicant: Deere & Company
Inventor： Tianjun Fu , Yuheng Wu , Long Wu , Danielle Li , David M. Loken , Richard E. Wainwright
CPC classification number: B60L53/24 , B60L50/51 , B60L2210/40
Abstract: In an example embodiment, a system includes a plurality of inverters configured to operate in at least one of a charging mode or a drive mode, a plurality of motors and at least one controller configured to selectively couple the plurality of inverters to the plurality of motors during a drive mode, and selectively couple at least one of the inverters to an alternating current (AC) source during the charging mode and decouple the at least one of the inverters from the plurality of motors during the charging mode.
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4.发明授权公开(公告)号：US10348222B2
公开(公告)日：2019-07-09
申请号：US15635376
申请日：2017-06-28
Applicant: Deere & Company
Inventor： Sumit Dutta , Long Wu , Danielle Li , Brij N. Singh , Jared Lervik
Abstract: In an example embodiment, a controller includes a memory having computer-readable instructions stored therein and a processor. The processor is configured to execute the computer-readable instructions to determine a first set of inductance values for at least one load machine and second set of inductance values for a generator machine, determine a first set of gains for the at least one load machine based on the first set of inductance values and a regulator bandwidth, determine a second set of gains for the generator machine based on the second set of inductance values and the regulator bandwidth, and generate voltage commands for driving the at least one load machine and the generator machine based on at least the first and second sets of gains.
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公开(公告)号：US10800262B2
公开(公告)日：2020-10-13
申请号：US15983582
申请日：2018-05-18
Applicant: Deere & Company
Inventor： Guozhen Zhou , Sumit Dutta , Long Wu , Danielle Li , Scott C. Johnson
Abstract: In an example embodiment, a method of controlling a three-phase alternating current (AC) voltage source includes determining an error between a direct current (DC) bus voltage command and a detected DC bus voltage, the detected DC bus voltage being a part of an outer feedback loop, obtaining one of a virtual conductance or virtual resistance, the one of the virtual conductance or the virtual resistance being a part of an inner feedback loop relative to the outer feedback loop, regulate an output DC bus voltage based on the error and the one of the virtual conductance or the virtual resistance and controlling the three-phase AC voltage source based on the regulation of the output DC bus voltage.
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6.发明申请公开(公告)号：US20180062547A1
公开(公告)日：2018-03-01
申请号：US15635376
申请日：2017-06-28
Applicant: Deere & Company
Inventor： Sumit DUTTA , Long WU , Danielle Li , Brij N. SINGH , Jared LERVIK
IPC: H02P6/04 , H02P25/022 , H02P27/08 , B60L11/08 , B60L11/12
CPC classification number: H02P6/04 , B60L50/13 , B60L50/15 , H02P5/74 , H02P21/00 , H02P25/022 , H02P27/08 , H02P29/662
Abstract: In an example embodiment, a controller includes a memory having computer-readable instructions stored therein and a processor. The processor is configured to execute the computer-readable instructions to determine a first set of inductance values for at least one load machine and second set of inductance values for a generator machine, determine a first set of gains for the at least one load machine based on the first set of inductance values and a regulator bandwidth, determine a second set of gains for the generator machine based on the second set of inductance values and the regulator bandwidth, and generate voltage commands for driving the at least one load machine and the generator machine based on at least the first and second sets of gains.
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