公开(公告)号：US09941831B1

公开(公告)日：2018-04-10

申请号：US15618184

申请日：2017-06-09

Applicant: Caterpillar Inc.

Inventor： Jason L. Miller ,  Ernesto Inoa ,  Jesse Gerdes ,  Alexander C. Crosman, III ,  Carlos E. Nino-Baron ,  Thomas Michael Sopko, Jr. ,  Jackson Wai ,  Ahmed Khalil

IPC: H02P25/08 ,  H02P6/08 ,  E02F9/20

CPC classification number: H02P25/08 ,  E02F9/207 ,  H02P6/08 ,  H02P2203/01

Abstract: A control system for a switched reluctance (SR) motor includes a Direct Current (DC) power source, and an inverter. The control system includes a user interface configured to enable an operator to specify a desired torque output. The control system further includes a controller which converts a DC current from the Alternating Current (AC) supplied to the SR motor by the inverter. The controller estimates an actual power output generated by the SR motor based on a DC voltage supplied by the DC power source to the inverter, and the converted DC current. The controller estimates an actual torque output based on the actual power output and a rotational speed of the SR motor. The controller compares the actual torque output and a desired torque output to calculate a torque error. The controller adjusts a torque output limit and the rotational speed of the SR motor.

公开(公告)号：US20170126156A1

公开(公告)日：2017-05-04

申请号：US15317487

申请日：2015-05-18

Applicant: Caterpillar Inc.

Inventor： Seok-hee Han ,  Carlos Nino Baron ,  Jackson Wai ,  Ahmed Khalil ,  Ernesto Inoa ,  Jesse Gerdes ,  James Michael Thorne

IPC: H02P6/185 ,  H02P27/06 ,  H02P25/089

CPC classification number: H02P6/185 ,  H02P6/18 ,  H02P25/08 ,  H02P25/089 ,  H02P27/06

Abstract: A method for determining rotor position of a switched reluctance (SR) machine having a rotor and a stator is provided. The method may include injecting a test pulse into one or more idle phases of the SR machine, determining a decoupled flux value based at least partially on a total flux value corresponding to the test pulse and a mutual flux value, and determining the rotor position based at least partially on the decoupled flux value.

公开(公告)号：US20160301347A1

公开(公告)日：2016-10-13

申请号：US14683610

申请日：2015-04-10

Applicant: Caterpillar Inc.

Inventor： Jesse Gerdes ,  Jackson Wai ,  Ahmed Khalil ,  Ernesto Inoa ,  Carlos Nino Baron

IPC: H02P25/08

CPC classification number: H02P25/08 ,  H02P23/0027 ,  H02P23/03

Abstract: A method of regulating a phase current of an electric motor is provided. The method may include selectively enabling one or more switches of each phase of the electric motor according to one of at least a soft chopping motoring routine and a soft chopping generating routine, monitoring the phase current relative to at least one limit of a hysteresis band and a switching period, and controlling the switches according to a hard chopping routine when the phase current does not reach the limit within the switching period.

Abstract translation: 提供一种调节电动机的相电流的方法。 该方法可以包括根据至少软斩波电动程序和软斩波产生程序中的至少一个选择性地启用电动机的每个相的一个或多个开关，监测相对于滞后带的至少一个极限的相电流，以及 开关周期，并且当相电流在开关周期内未达到极限时，根据硬切断程序来控制开关。

公开(公告)号：US09391555B2

公开(公告)日：2016-07-12

申请号：US14492988

申请日：2014-09-22

Applicant: Caterpillar Inc.

Inventor： Jackson Wai ,  Carlos Nino Baron ,  Jesse Gerdes ,  Ahmed Khalil

IPC: H02P6/00 ,  H02P25/08

CPC classification number: H02P25/08 ,  B60L15/007 ,  B60L2200/36 ,  B60L2200/40 ,  B60L2220/18 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/526 ,  H02P25/083 ,  Y02T10/644 ,  Y02T10/645 ,  Y02T10/7258 ,  Y02T90/16

Abstract: A control system for a switched reluctance (SR) machine is disclosed. The SR machine may have a rotor and a stator. The control system may have a converter circuit operatively coupled to the stator and including a plurality of gates in selective communication with each phase of the stator, and a controller in communication with each of the stator and the converter circuit. The controller may be configured to command a fixed dwell of a theta-on angle and a theta-off angle and a varying current command to the plurality of gates when the SR machine is in a continuous conduction mode.

Abstract translation: 公开了一种用于开关磁阻（SR）机器的控制系统。 SR机器可以具有转子和定子。 控制系统可以具有可操作地耦合到定子并且包括与定子的每个相位选择性地连通的多个栅极的转换器电路以及与每个定子和转换器电路连通的控制器。 控制器可以被配置为当SR机器处于连续导通模式时，将θ-on角度和θ-off角度以及变化电流指令的固定驻留命令给多个门。

公开(公告)号：US09340113B2

公开(公告)日：2016-05-17

申请号：US14596387

申请日：2015-01-14

Applicant: Caterpillar Inc.

Inventor： Jackson Wai ,  Thuong Le ,  Adam Braun ,  Jesse Gerdes ,  James Siegle ,  Mark Hartman

IPC: B60L9/00 ,  B60L11/02 ,  E02F9/20 ,  F02B63/04 ,  F02D29/06 ,  B60K6/46 ,  B60L11/08 ,  B60L15/20 ,  B60W10/08 ,  B60W50/00

CPC classification number: B60L11/02 ,  B60K6/46 ,  B60L11/08 ,  B60L15/20 ,  B60W10/08 ,  B60W2050/0075 ,  B60W2300/17 ,  B60W2300/44 ,  B60W2510/0638 ,  E02F9/2075 ,  F02B63/042 ,  F02D29/06 ,  Y02T10/6217 ,  Y02T10/645 ,  Y02T10/70 ,  Y02T10/7077 ,  Y02T10/7275 ,  Y02T90/16 ,  Y10S903/902

Abstract: A control system for a generator of an electric drive is provided. The control system may include a converter circuit configured to communicate with one or more phases of a stator of the generator, and a controller in communication with the converter circuit and an engine associated with the electric drive. The controller may be configured to determine an operational state of the electric drive based on at least engine speed, and engage one of a map-lookup control scheme and a fixed-theta off control scheme for operating the generator based on the operational state of the electric drive.

Abstract translation: 提供一种用于电驱动发电机的控制系统。 控制系统可以包括被配置为与发电机的定子的一个或多个相位通信的转换器电路，以及与转换器电路和与电驱动器相关联的发动机通信的控制器。 控制器可以被配置为基于至少发动机速度来确定电动驱动器的操作状态，并且基于地图查找控制方案和固定关闭控制方案中的一个来操作发电机，所述方法基于操作状态 电驱动。

公开(公告)号：US20140117901A1

公开(公告)日：2014-05-01

申请号：US13664623

申请日：2012-10-31

Applicant: CATERPILLAR INC.

Inventor： Jesse Gerdes ,  Jackson Wai ,  Mark Hartman ,  Ahmed Khalil ,  Carlos Nino Baron

IPC: H02P6/18

CPC classification number: H02P6/182 ,  H02P25/083 ,  H02P25/089 ,  H02P2203/01 ,  H02P2203/03

Abstract: A method of estimating an initial rotor position of a switched reluctance (SR) machine having a rotor and a stator is provided. The method may comprise the steps of driving a phase current in each of a plurality of phases of the SR machine to a predefined limit, performing an integration of a common bus voltage associated with each phase, determining a flux value for each phase based on the integrations, and determining the initial rotor position based on the flux values.

Abstract translation: 提供了一种估计具有转子和定子的开关磁阻（SR）机器的初始转子位置的方法。 该方法可以包括以下步骤：将SR机器的多个相位中的每一相中的相电流驱动到预定义的极限，执行与每个相位相关联的公共总线电压的积分，基于该相位确定每个相位的磁通值 并且基于通量值确定初始转子位置。