公开(公告)号：US09641119B2

公开(公告)日：2017-05-02

申请号：US14565940

申请日：2014-12-10

Applicant: McMaster University

Inventor： Ali Emadi ,  Jin Ye

IPC: H02P25/08 ,  H02P25/098

CPC classification number: H02P25/098

Abstract: Various embodiments are described herein for an extended-speed low-ripple torque control of a switched reluctance motor (SRM) using online torque sharing function (TSF). Two operational modes of an online TSF are defined during the commutation: In Mode I, absolute value of rate of change of flux linkage (ARCFL) of incoming phase is higher than outgoing phase; in Mode II, ARCFL of outgoing phase is higher than incoming phase. To compensate the torque error produced by imperfect tracking of phase current, a proportional and integral compensator with torque error is added to the torque reference of outgoing phase in Mode I and incoming phase in Mode II. Therefore, the total torque is determined by the phase with lower ARCFL rather than the phase with higher ARCFL as in conventional TSFs.

公开(公告)号：US20150162863A1

公开(公告)日：2015-06-11

申请号：US14565940

申请日：2014-12-10

Applicant: McMaster University

Inventor： Ali Emadi ,  Jin Ye

IPC: H02P25/08

CPC classification number: H02P25/098

Abstract: Various embodiments are described herein for an extended-speed low-ripple torque control of a switched reluctance motor (SRM) using online torque sharing function (TSF). Two operational modes of an online TSF are defined during the commutation: In Mode I, absolute value of rate of change of flux linkage (ARCFL) of incoming phase is higher than outgoing phase; in Mode II, ARCFL of outgoing phase is higher than incoming phase. To compensate the torque error produced by imperfect tracking of phase current, a proportional and integral compensator with torque error is added to the torque reference of outgoing phase in Mode I and incoming phase in Mode II. Therefore, the total torque is determined by the phase with lower ARCFL rather than the phase with higher ARCFL as in conventional TSFs.

Abstract translation: 这里描述了使用在线转矩共享功能（TSF）的开关磁阻电机（SRM）的扩展速度低纹波转矩控制的各种实施例。 在换向期间定义了在线TSF的两种操作模式：在模式I中，进入相位的磁链变化率（ARCFL）的绝对值高于输出相位; 在模式II中，输出相位的ARCFL高于进入相位。 为了补偿相电流不完全跟踪产生的转矩误差，在模式I和模式II中的输入相位中，具有转矩误差的比例积分补偿器被加到输出相的转矩基准上。 因此，总转矩由具有较低ARCFL的相位而不是像常规TSF中具有较高ARCFL的相位确定。

公开(公告)号：US20150207439A1

公开(公告)日：2015-07-23

申请号：US14599838

申请日：2015-01-19

Applicant: McMaster University

Inventor： Jin Ye ,  Ali Emadi

IPC: H02P6/10 ,  H02P6/00

CPC classification number: H02P6/10 ,  B62D5/046 ,  H02P6/14 ,  H02P25/098

Abstract: A method for controlling a switched reluctance motor, the method comprising: receiving a reference torque Te ref; receiving an indication of a present rotor position θ for the switched reluctance motor; determining at least one of: a reference current ie—ref(k−1) for a (k−1)th phase, a reference current ie—ref(k) for a (k)th phase, and a reference current ie—ref(k+1) for a (k+1)th phase; and outputting the determined at least one reference current to a current controller operatively coupled to the switched reluctance motor, wherein the determined at least one reference current is based on an objective function comprising the squares of phase current and derivatives of current reference.

Abstract translation: 一种用于控制开关磁阻电动机的方法，所述方法包括：接收参考转矩Te ref; 接收当前转子位置的指示; 用于开关磁阻电动机; 确定第（k-1）相的参考电流ie-ref（k-1），第（k）相的参考电流ie-ref（k）和参考电流ie- ref（k + 1）for（k + 1）phase; 并将所确定的至少一个参考电流输出到可操作地耦合到开关磁阻电机的电流控制器，其中所确定的至少一个参考电流基于包括相电流的平方和电流参考的导数的目标函数。

公开(公告)号：US09742320B2

公开(公告)日：2017-08-22

申请号：US14599838

申请日：2015-01-19

Applicant: McMaster University

Inventor： Jin Ye ,  Ali Emadi

IPC: H02K29/06 ,  H02P6/10 ,  H02P25/098 ,  H02P6/14 ,  B62D5/04

CPC classification number: H02P6/10 ,  B62D5/046 ,  H02P6/14 ,  H02P25/098

Abstract: A method for controlling a switched reluctance motor, the method comprising: receiving a reference torque Te ref; receiving an indication of a present rotor position θ for the switched reluctance motor; determining at least one of: a reference current ie_ref(k−1) for a (k−1)th phase, a reference current ie_ref(k) for a (k)th phase, and a reference current ie_ref(k+1) for a (k+1)th phase; and outputting the determined at least one reference current to a current controller operatively coupled to the switched reluctance motor, wherein the determined at least one reference current is based on an objective function comprising the squares of phase current and derivatives of current reference.

公开(公告)号：US09722517B2

公开(公告)日：2017-08-01

申请号：US14676110

申请日：2015-04-01

Applicant: McMaster University

Inventor： Jin Ye ,  Ali Emadi

IPC: H02P25/089 ,  H02P6/18

CPC classification number: H02P6/186 ,  H02P25/089

Abstract: Various embodiments are described herein for a system and method to eliminate mutual flux effect on rotor position estimation of switched reluctance motor (SRM) drives at rotating shaft conditions without a prior knowledge of mutual flux. Neglecting the magnetic saturation, the operation of conventional self-inductance estimation using phase current slope difference method can be classified into three modes: Mode I, II and III. At positive-current-slope and negative-current-slope sampling point of one phase, the sign of current slope of the other phase changes in Mode I and II, but does not change in Mode III. In one example embodiment, in order to operate the self-inductance estimation in Mode III, a variable-hysteresis-band current control method is proposed for the incoming phase and variable-sampling method is proposed for the outgoing phase.

公开(公告)号：US20150280626A1

公开(公告)日：2015-10-01

申请号：US14676110

申请日：2015-04-01

Applicant: McMaster University

Inventor： Jin Ye ,  Ali Emadi

IPC: H02P6/18 ,  H02P25/08

CPC classification number: H02P6/186 ,  H02P25/089

Abstract: Various embodiments are described herein for a system and method to eliminate mutual flux effect on rotor position estimation of switched reluctance motor (SRM) drives at rotating shaft conditions without a prior knowledge of mutual flux. Neglecting the magnetic saturation, the operation of conventional self-inductance estimation using phase current slope difference method can be classified into three modes: Mode I, II and III. At positive-current-slope and negative-current-slope sampling point of one phase, the sign of current slope of the other phase changes in Mode I and II, but does not change in Mode III. In one example embodiment, in order to operate the self-inductance estimation in Mode III, a variable-hysteresis-band current control method is proposed for the incoming phase and variable-sampling method is proposed for the outgoing phase.

Abstract translation: 这里描述了用于在没有相互通量的先前知识的情况下在旋转轴条件下消除开关磁阻电动机（SRM）驱动器的转子位置估计的相互通量效应的系统和方法。 忽略磁饱和度，使用相电流斜率差分法的常规自感估计的运算可分为模式I，II和III三种模式。 在一相的正电流斜率和负电流斜率采样点，另一相的电流斜率的符号在模式I和II中变化，但在模式III中不改变。 在一个示例性实施例中，为了在模式III中操作自感估计，提出了用于输入相位的可变滞后带电流控制方法，并且针对输出相提出了可变采样方法。