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公开(公告)号：US20150333663A1
公开(公告)日：2015-11-19
申请号：US14321330
申请日：2014-07-01
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Kun Wei , HaiHui Lu , Andrew Jaap , David Messersmith , Randall Langer , Ping Lee
CPC classification number: H02P27/047 , H02P1/04 , H02P1/16 , H02P1/26 , H02P1/40 , H02P21/28 , H02P21/34 , H02P27/16
Abstract: An apparatus for a quasi variable frequency motor controller is includes a DFC module that applies a first frequency to a motor as part of a discrete frequency control (“DFC”) method for motor starting. The first frequency includes a discrete frequency in a plurality of discrete frequencies of the DFC method and each discrete frequency includes a frequency lower than a fundamental frequency of an alternating current (“AC”) voltage source providing power to the motor. The apparatus includes a torque module that determines when motor torque generated by the motor reaches a negative torque threshold and a next frequency module that applies a second frequency to the motor in response to the torque module determining that the motor torque has reached the negative torque threshold. The second frequency is a next frequency in the DFC method.
Abstract translation: 准变频电机控制器的装置包括：DFC模块，其将作为电动机起动的离散频率控制（“DFC”）方法的一部分施加于电动机的第一频率。 第一频率包括在DFC方法的多个离散频率中的离散频率，并且每个离散频率包括低于向电动机提供电力的交流（“AC”）电压源的基频的频率。 该装置包括扭矩模块，其确定电动机产生的电动机扭矩何时达到负转矩阈值;以及下一个频率模块，其响应于转矩模块确定电动机转矩达到负转矩阈值，向电动机施加第二频率 。 第二个频率是DFC方法中的下一个频率。
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公开(公告)号：US09350275B2
公开(公告)日：2016-05-24
申请号：US14321330
申请日：2014-07-01
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Kun Wei , HaiHui Lu , Andrew Jaap , David Messersmith , Randall Langer , Ping Lee
CPC classification number: H02P27/047 , H02P1/04 , H02P1/16 , H02P1/26 , H02P1/40 , H02P21/28 , H02P21/34 , H02P27/16
Abstract: An apparatus for a quasi variable frequency motor controller is includes a DFC module that applies a first frequency to a motor as part of a discrete frequency control (“DFC”) method for motor starting. The first frequency includes a discrete frequency in a plurality of discrete frequencies of the DFC method and each discrete frequency includes a frequency lower than a fundamental frequency of an alternating current (“AC”) voltage source providing power to the motor. The apparatus includes a torque module that determines when motor torque generated by the motor reaches a negative torque threshold and a next frequency module that applies a second frequency to the motor in response to the torque module determining that the motor torque has reached the negative torque threshold. The second frequency is a next frequency in the DFC method.
Abstract translation: 准变频电机控制器的装置包括：DFC模块，其将作为电动机起动的离散频率控制（“DFC”）方法的一部分施加于电动机的第一频率。 第一频率包括在DFC方法的多个离散频率中的离散频率，并且每个离散频率包括低于向电动机提供电力的交流（“AC”）电压源的基频的频率。 该装置包括扭矩模块，其确定电动机产生的电动机扭矩何时达到负转矩阈值;以及下一个频率模块，其响应于转矩模块确定电动机转矩达到负转矩阈值，向电动机施加第二频率 。 第二个频率是DFC方法中的下一个频率。
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公开(公告)号：US09685898B2
公开(公告)日：2017-06-20
申请号：US14321356
申请日：2014-07-01
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Kun Wei , HaiHui Lu , Andrew Jaap , David Messersmith , Randall Langer , Ping Lee
CPC classification number: H02P27/047 , H02P1/04 , H02P1/16 , H02P1/26 , H02P1/40 , H02P21/28 , H02P21/34 , H02P27/16
Abstract: An apparatus includes a switch module that selectively turns on a switch to connect an input power conductor connected to a voltage source to a motor in a sequence. The switch for each phase is turned on for a portion of a cycle of a fundamental frequency of the voltage source. A source phase module determines a phase of the AC voltage source, a back-EMF phase module determines a phase of a back-EMF of the motor, and a torque module determines when a phase difference between the phase of the AC voltage source and the phase of the back-EMF is within a phase range indicative of a positive motor torque. A pulse module enables the switches in response to the phase difference having a phase within the phase range and disables the switches in response to the phase difference having a phase not in the phase range.
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公开(公告)号：US20150333685A1
公开(公告)日：2015-11-19
申请号：US14321356
申请日：2014-07-01
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Kun Wei , HaiHui Lu , Andrew Jaap , David Messersmith , Randall Langer , Ping Lee
CPC classification number: H02P27/047 , H02P1/04 , H02P1/16 , H02P1/26 , H02P1/40 , H02P21/28 , H02P21/34 , H02P27/16
Abstract: An apparatus includes a switch module that selectively turns on a switch to connect an input power conductor connected to a voltage source to a motor in a sequence. The switch for each phase is turned on for a portion of a cycle of a fundamental frequency of the voltage source. A source phase module determines a phase of the AC voltage source, a back-EMF phase module determines a phase of a back-EMF of the motor, and a torque module determines when a phase difference between the phase of the AC voltage source and the phase of the back-EMF is within a phase range indicative of a positive motor torque. A pulse module enables the switches in response to the phase difference having a phase within the phase range and disables the switches in response to the phase difference having a phase not in the phase range.
Abstract translation: 一种装置包括开关模块，其选择性地接通开关以将连接到电压源的输入电力导体按顺序连接到电动机。 每个相位的开关在电压源的基频周期的一部分被导通。 源相位模块确定AC电压源的相位，反电动势相位模块确定电动机的反电动势的相位，并且转矩模块确定何时AC电压源的相位与 反电动势的相位在表示正的电动机转矩的相位范围内。 脉冲模块使得开关响应于具有在相位范围内的相位的相位差，并且响应于具有不在相位范围内的相位的相位差而禁用开关。
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