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1. 发明授权

US09270223B2 Methods of determining machine terminal voltage and systems thereof 有权
标题翻译：确定机器端子电压的方法及其系统
公开(公告)号：US09270223B2
公开(公告)日：2016-02-23
申请号：US14141631
申请日：2013-12-27
申请人： Long Wu , Anthony Weber , Lav Thyagarajan
发明人： Long Wu , Anthony Weber , Lav Thyagarajan
IPC分类号： G05B11/28 , H02P27/08 , H02P21/00 , H02P21/14
CPC分类号： H02P27/08 , H02P21/20 , H02P21/22 , H02P2207/05
摘要： At least one example embodiment discloses a control device for controlling an alternating current (ac) machine. The control device includes a processor configured to select a modulation mode from a plurality of modulation modes, determine a plurality of present phase voltages corresponding to phases of an inverter based on the selected modulation mode, the determination compensating for deadtimes associated with the selected modulation mode and phases of the inverter, the inverter configured to drive the ac machine and determine an estimated terminal voltage based on the plurality of present phase voltages.
摘要翻译：至少一个示例性实施例公开了一种用于控制交流（ac）机器的控制装置。控制装置包括：处理器，被配置为从多个调制模式中选择调制模式，基于所选择的调制模式确定与逆变器的相位对应的多个当前相电压，所述确定补偿与所选择的调制模式相关联的死机时间逆变器的相位，逆变器被配置为驱动交流电机，并且基于多个当前相电压来确定估计的端子电压。

2. 发明授权

US10044310B2 Methods of auto tuning machine parameters and systems thereof 有权
公开(公告)号：US10044310B2
公开(公告)日：2018-08-07
申请号：US14658804
申请日：2015-03-16
申请人： Lav Thyagarajan , Long Wu , Tianjun Fu
发明人： Lav Thyagarajan , Long Wu , Tianjun Fu
IPC分类号： H02P23/08 , H02P21/14 , H02P25/02 , H02P23/30
摘要： In one example embodiment, a method includes determining a first adjustment value for a slip frequency of a rotor in an induction motor, determining a second adjustment value for an inductance of the induction motor and tuning the slip frequency of the rotor and the inductance of the induction motor based on the first adjustment value and the second adjustment value, respectively.

3. 发明申请

US20130093372A1 METHOD AND SYSTEM ESTIMATING ROTOR ANGLE OF AN ELECTRIC MACHINE 有权
标题翻译：电机转子角的方法和系统估计
公开(公告)号：US20130093372A1
公开(公告)日：2013-04-18
申请号：US13273376
申请日：2011-10-14
申请人： Lav Thyagarajan
发明人： Lav Thyagarajan
IPC分类号： H02P6/16
CPC分类号： H02P6/06 , H02P6/34 , H02P21/18
摘要： Position samples are stored from an encoder coupled to a permanent magnet electric machine. A data processor determines first changes in position between successive position samples and second changes between successive first changes in position. A data processor determines whether each first change in position is generally increasing, decreasing or constant. A corrective motion factor is applied to each stored position sample based on whether the first change in position is generally increasing or decreasing. The data processor estimates a final rotor angle of the electric machine based on a particular one of the position samples and a corresponding first change in position associated with the particular one of the position samples corresponding to a respective time.
摘要翻译：位置采样从耦合到永磁电机的编码器存储。数据处理器确定连续位置采样之间的位置的第一变化以及位置的连续的第一变化之间的第二变化。数据处理器确定位置中的每个第一变化是否通常增加，减小或恒定。基于位置的第一变化是否正在增加或减少，将校正运动因子应用于每个存储的位置样本。数据处理器基于位置样本中的特定一个估计电机的最终转子角度，以及与对应于相应时间的位置样本中的特定一个位置相关联的对应的第一位置变化。

4. 发明授权

US08810169B2 Method and system for estimating rotor angle of an electric machine 有权
标题翻译：估算电机转子角度的方法和系统
公开(公告)号：US08810169B2
公开(公告)日：2014-08-19
申请号：US13273376
申请日：2011-10-14
申请人： Lav Thyagarajan
发明人： Lav Thyagarajan
IPC分类号： H02P6/16 , H02P6/06
CPC分类号： H02P6/06 , H02P6/34 , H02P21/18
摘要： Position samples are stored from an encoder coupled to a permanent magnet electric machine. A data processor determines first changes in position between successive position samples and second changes between successive first changes in position. A data processor determines whether each first change in position is generally increasing, decreasing or constant. A corrective motion factor is applied to each stored position sample based on whether the first change in position is generally increasing or decreasing. The data processor estimates a final rotor angle of the electric machine based on a particular one of the position samples and a corresponding first change in position associated with the particular one of the position samples corresponding to a respective time.
摘要翻译：位置采样从耦合到永磁电机的编码器存储。数据处理器确定连续位置采样之间的位置的第一变化以及位置的连续的第一变化之间的第二变化。数据处理器确定位置中的每个第一变化是否通常增加，减小或恒定。基于位置的第一变化是否正在增加或减少，将校正运动因子应用于每个存储的位置样本。数据处理器基于位置样本中的特定一个估计电机的最终转子角度，以及与对应于相应时间的位置样本中的特定一个位置相关联的对应的第一位置变化。

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