公开(公告)号：US08314576B2

公开(公告)日：2012-11-20

申请号：US12838442

申请日：2010-07-17

Applicant: Babak Fahimi ,  Amir Khoobroo

Inventor： Babak Fahimi ,  Amir Khoobroo

IPC: H02P6/12 ,  H02P23/14

CPC classification number: H02P23/14 ,  H02P21/141 ,  H02P23/12 ,  H02P2207/05

Abstract: Methods and apparatuses for detecting faults and optimizing phase currents in an electromechanical energy converter are disclosed. An example method comprises: measuring a current of a phase of the electromechanical energy converter, modeling the electromechanical energy converter with the current measurement input into a field reconstruction module, calculating a flux linkage of the electromechanical energy converter, comparing the flux linkage with a flux linkage from a no fault electromechanical energy converter, and optimizing the current of the phase of the electromechanical energy converter in response to the comparison. Other embodiments are described and claimed.

Abstract translation: 公开了用于检测机电能量转换器中的故障和优化相电流的方法和装置。 一个示例性方法包括：测量机电能量转换器的相的电流，利用电流测量输入将机电能量转换器建模到场重构模块中，计算机电能量转换器的磁链，将磁通与通量 从无故障机电能量转换器的连接，以及响应于比较优化机电能量转换器的相位的电流。 描述和要求保护其他实施例。

公开(公告)号：US06922036B1

公开(公告)日：2005-07-26

申请号：US09998735

申请日：2001-11-30

Applicant: Mehrdad Ehsani ,  Babak Fahimi

Inventor： Mehrdad Ehsani ,  Babak Fahimi

IPC: H02P1/46 ,  H02P3/18 ,  H02P25/08 ,  H02P5/28 ,  H02P7/36

CPC classification number: H02P25/098

Abstract: According to one embodiment of the invention, a method includes generating, by a computer, a phase current profile, generating a phase current according to the phase current profile, and applying the phase current to the switched reluctance motor drive. Generating the phase current profile includes initializing one or more first profile parameters which define at least a first portion of the phase current profile. Generating the phase current profile also includes determining whether a first performance criterion is satisfied based on operation of the switched reluctance motor drive using the first profile parameters. Generating the phase current profile also includes updating at least one the first profile parameters if the first performance criterion is not satisfied.

Abstract translation: 根据本发明的一个实施例，一种方法包括由计算机产生相电流分布，根据相电流分布产生相电流，以及将相电流施加到开关磁阻电机驱动器。 生成相电流分布包括初始化限定相电流分布的至少第一部分的一个或多个第一分布参数。 生成相电流轮廓还包括基于使用第一轮廓参数的开关磁阻电机驱动器的操作来确定是否满足第一性能标准。 如果不满足第一性能标准，则生成相电流分布还包括更新至少一个第一简档参数。

公开(公告)号：US09366732B2

公开(公告)日：2016-06-14

申请号：US12876976

申请日：2010-09-07

Applicant: Babak Fahimi ,  Anahita Banaei

Inventor： Babak Fahimi ,  Anahita Banaei

IPC: G01R31/36 ,  G01R31/02

CPC classification number: G01R31/3679 ,  G01R31/025 ,  G01R31/3651

Abstract: Estimation of a state-of-health (SOH) in a battery are disclosed. An example technique includes determining if a terminal voltage of the chemical battery differs from a calculated terminal voltage. In response to determining that the terminal voltage of the chemical battery differs from the calculated terminal voltage, calculating a range of voltages by taking the convolution of a terminal current of the chemical battery with a range of impulse responses from a look up table of impulse responses corresponding to different SOH. The technique further includes comparing the terminal voltage of the chemical battery with the range of calculated voltages to determine a second impulse response that corresponds to the case where the terminal voltage matches the calculated voltage. The look up table of impulse responses corresponding to different SOHs is then used to determine the SOH of the chemical battery from the second impulse response.

Abstract translation: 公布了电池中健康状况（SOH）的估计。 一个示例技术包括确定化学电池的端电压是否与计算的端电压不同。 响应于确定化学电池的端电压与计算的端电压不同，通过将化学电池的端电流与脉冲响应的查询表的脉冲响应范围进行卷积来计算电压范围 对应不同的SOH。 该技术还包括将化学电池的端电压与计算出的电压的范围进行比较，以确定对应于端电压与计算电压相匹配的情况的第二脉冲响应。 然后使用与不同SOH相对应的脉冲响应的查找表从第二脉冲响应确定化学电池的SOH。

公开(公告)号：US08125170B2

公开(公告)日：2012-02-28

申请号：US12140232

申请日：2008-06-16

Applicant: Babak Fahimi ,  Umamaheshwar Krishnamurthy

Inventor： Babak Fahimi ,  Umamaheshwar Krishnamurthy

IPC: H02P6/00

CPC classification number: G01R31/34 ,  G01R27/2611 ,  H02P25/089

Abstract: A system and technique for measuring the mutual inductance in a switched reluctance machine (SRM). In a first example embodiment of the technique, a voltage pulse is applied to primary coil when the machine is stationery. By measuring current in the primary coil and measuring induced voltages in adjacent open circuited coils mutual inductance may be determined. In another example embodiment, a voltage pulse is applied to the primary coil when the machine is stationery. The secondary coil is allowed to freewheel current through the phase. By measuring time taken by the primary phase to reach a preset value, the mutual inductance for the known position of a rotor can be determined.

Abstract translation: 用于测量开关磁阻电机（SRM）中互感的系统和技术。 在该技术的第一示例性实施例中，当机器是文具时，将电压脉冲施加到初级线圈。 通过测量初级线圈中的电流并测量相邻开路线圈中的感应电压，可以确定互感。 在另一个示例实施例中，当机器是文具时，电压脉冲被施加到初级线圈。 允许次级线圈使电流通过相位。 通过测量主相达到预设值所花费的时间，可以确定转子已知位置的互感。

公开(公告)号：US20060279155A1

公开(公告)日：2006-12-14

申请号：US11379174

申请日：2006-04-18

Applicant: Mark Holtzapple ,  George Rabroker ,  Babak Fahimi ,  Mehrdad Ehsani

Inventor： Mark Holtzapple ,  George Rabroker ,  Babak Fahimi ,  Mehrdad Ehsani

IPC: H02K19/20 ,  H02K19/24 ,  H02K17/42

CPC classification number: H02K1/02 ,  F01C1/10 ,  F01C1/103 ,  F01C1/104 ,  F01C11/004 ,  F01C17/02 ,  F01C19/08 ,  F01C19/085 ,  F01C20/12 ,  F01C20/28 ,  F01C21/008 ,  F01C21/02 ,  F01C21/04 ,  F01C21/06 ,  F01C21/102 ,  F04C2/105 ,  F04C18/10 ,  F04C29/0085 ,  F04C2230/601 ,  F04C2230/602 ,  F04C2230/91 ,  H02K19/103 ,  H02K21/18 ,  H02K21/185 ,  H02K2201/12

Abstract: According to one embodiment of the present invention, an electric machine comprises a stator and a rotor. The stator has at least one stator pole with a first leg and a second leg. The rotor has at least one rotor pole. The rotor rotates relate to the stator. The at least one rotor is configured to rotate between the first leg and the second leg of the at least one stator pole.

Abstract translation: 根据本发明的一个实施例，电机包括定子和转子。 定子具有至少一个具有第一腿和第二腿的定子极。 转子至少有一个转子极。 转子旋转与定子相关。 所述至少一个转子被配置为在所述至少一个定子极的第一腿和第二腿之间旋转。

公开(公告)号：US08248829B2

公开(公告)日：2012-08-21

申请号：US12772199

申请日：2010-05-01

Applicant: Babak Fahimi ,  Wei Jiang

Inventor： Babak Fahimi ,  Wei Jiang

IPC: H02M7/44 ,  H02M7/5387

CPC classification number: H02M7/53873 ,  H02M2001/0009

Abstract: Methods and systems for phase current reconstruction are disclosed. An example method comprises: sampling a current from a power stage comprising: three phase legs, a current sensor to measure a dc-link current, and three more current sensors configured to measure three summations of currents for the power stage, storing the sampled current into a current stack if the sampled current comes from a survived sensor and is one of the phase currents from the switching state in the state stack, and reconstructing an unknown phase current by using the previously stored currents along with the sampled current to calculate the unknown phase current. Other embodiments are described and claimed.

Abstract translation: 公开了用于相电流重建的方法和系统。 示例性方法包括：从功率级对电流进行采样，包括：三相支路，用于测量直流链路电流的电流传感器，以及三个电流传感器，其被配置为测量用于功率级的三个电流相加，存储采样电流 如果采样电流来自一个存活的传感器，并且是状态堆叠中来自开关状态的相电流之一，并且通过使用先前存储的电流以及采样电流来重构未知的相电流来计算未知数 相电流。 描述和要求保护其他实施例。

公开(公告)号：US20110316366A1

公开(公告)日：2011-12-29

申请号：US13169233

申请日：2011-06-27

Applicant: Mohammadali Abbasian ,  Mehdi Moallem ,  Babak Fahimi

Inventor： Mohammadali Abbasian ,  Mehdi Moallem ,  Babak Fahimi

IPC: H02K19/06

CPC classification number: H02K16/04 ,  H02K3/12 ,  H02K19/103 ,  H02K19/12 ,  H02K19/32

Abstract: A switched reluctance apparatus and method of operating the same. The apparatus has an inner stator having a plurality of poles, a rotor disposed radially outward of the inner stator and having a plurality of segments serving as poles, and an outer stator disposed radially outward of the rotor and having a plurality of poles. A respective winding is disposed between every pair of adjacent poles of either stator. The apparatus operates with a plurality of separately excitable phases, a given phase being excited by energizing the windings corresponding to the given phase. Excitation of a given phase causes induction of magnetic fluxes traversing a region substantially confined to the region of the stators and rotor segments corresponding to the given phase, and causes a substantial amount of flux to enter rotor segments not in the radial direction but perpendicular to the radial direction.

Abstract translation: 开关磁阻装置及其操作方法。 该设备具有多个极的内部定子，设置在内部定子的径向外侧并具有多个用作极点的段的转子和设置在转子的径向外侧并具有多个极的外部定子。 相应的绕组设置在任一定子的每对相邻极之间。 该装置以多个可分离的相位操作，给定相位通过对与给定相位相对应的绕组通电来激励。 给定相的激励导致磁通量的感应通过基本上限制在与给定相位相对应的定子和转子段的区域的区域，并且使大量的通量不是在径向方向上但垂直于 径向。

公开(公告)号：US20110267012A1

公开(公告)日：2011-11-03

申请号：US13098273

申请日：2011-04-29

Applicant: Morgan M. Kiani ,  Wei Wang ,  Babak Fahimi ,  Wei-Jen Lee

Inventor： Morgan M. Kiani ,  Wei Wang ,  Babak Fahimi ,  Wei-Jen Lee

IPC: H02P9/42

CPC classification number: H02P9/007 ,  H02P27/05 ,  H02P2101/15 ,  H02P2207/01

Abstract: Methods and apparatuses for substantially eliminating torque pulsation in a doubly fed induction machine are disclosed. An example method comprises: measuring a stator current of the doubly fed induction machine, measuring a rotor current of the doubly fed induction machine, calculating a total magnetic flux density in an airgap of the doubly fed induction machine, calculating a tangential force density, calculating an electromagnetic torque, repeating the calculation of the electromagnetic torque over one electrical cycle to estimate a torque pulsation, determining a new rotor current that substantially eliminates the torque pulsation by referencing a set of optimal rotor currents in a look-up table, and changing the rotor current in response to the determination. Other embodiments are described and claimed.

Abstract translation: 公开了用于基本上消除双馈感应电机中的扭矩脉动的方法和装置。 一个示例方法包括：测量双馈感应电机的定子电流，测量双馈感应电机的转子电流，计算双馈感应电机的气隙中的总磁通密度，计算切向力密度，计算 电磁转矩，重复在一个电循环上的电磁转矩的计算以估计转矩脉动，通过参考查找表中的一组最佳转子电流来确定基本上消除转矩脉动的新转子电流，并且 转子电流响应确定。 描述和要求保护其他实施例。

公开(公告)号：US20100213786A1

公开(公告)日：2010-08-26

申请号：US12705900

申请日：2010-02-15

Applicant: Mark T. Holtzapple ,  George A. Rabroker ,  Babak Fahimi ,  Mehrdad Ehsani

Inventor： Mark T. Holtzapple ,  George A. Rabroker ,  Babak Fahimi ,  Mehrdad Ehsani

IPC: H02K1/08

CPC classification number: H02K1/02 ,  F01C1/10 ,  F01C1/103 ,  F01C1/104 ,  F01C11/004 ,  F01C17/02 ,  F01C19/08 ,  F01C19/085 ,  F01C20/12 ,  F01C20/28 ,  F01C21/008 ,  F01C21/02 ,  F01C21/04 ,  F01C21/06 ,  F01C21/102 ,  F04C2/105 ,  F04C18/10 ,  F04C29/0085 ,  F04C2230/601 ,  F04C2230/602 ,  F04C2230/91 ,  H02K19/103 ,  H02K21/18 ,  H02K21/185 ,  H02K2201/12

Abstract: According to one embodiment of the present invention, an electric machine comprises a stator and a rotor. The stator has at least one stator pole with a first leg and a second leg. The rotor has at least one rotor pole. The rotor rotates relate to the stator. The at least one rotor is configured to rotate between the first leg and the second leg of the at least one stator pole.

Abstract translation: 根据本发明的一个实施例，电机包括定子和转子。 定子具有至少一个具有第一腿和第二腿的定子极。 转子至少有一个转子极。 转子旋转与定子相关。 所述至少一个转子被构造成在所述至少一个定子极的第一腿和第二腿之间旋转。

公开(公告)号：US20080315896A1

公开(公告)日：2008-12-25

申请号：US12140232

申请日：2008-06-16

Applicant: BABAK FAHIMI ,  UMAMAHESHWAR KRISHNAMURTHY

Inventor： BABAK FAHIMI ,  UMAMAHESHWAR KRISHNAMURTHY

IPC: G01R27/02 ,  H02P6/16

CPC classification number: G01R31/34 ,  G01R27/2611 ,  H02P25/089

Abstract: A system and technique for measuring the mutual inductance in a switched reluctance machine (SRM). In a first example embodiment of the technique, a voltage pulse is applied to primary coil when the machine is stationery. By measuring current in the primary coil and measuring induced voltages in adjacent open circuited coils mutual inductance may be determined. In another example embodiment, a voltage pulse is applied to the primary coil when the machine is stationery. The secondary coil is allowed to freewheel current through the phase. By measuring time taken by the primary phase to reach a preset value, the mutual inductance for the known position of a rotor can be determined.

Abstract translation: 用于测量开关磁阻电机（SRM）中互感的系统和技术。 在该技术的第一示例性实施例中，当机器是文具时，将电压脉冲施加到初级线圈。 通过测量初级线圈中的电流并测量相邻开路线圈中的感应电压，可以确定互感。 在另一个示例实施例中，当机器是文具时，电压脉冲被施加到初级线圈。 允许次级线圈使电流通过相位。 通过测量主相达到预设值所花费的时间，可以确定转子已知位置的互感。