-
公开(公告)号：US20160099671A1
公开(公告)日：2016-04-07
申请号：US14967996
申请日：2015-12-14
申请人： Emerson Electric Co.
发明人： Ping Shan , Cai Bing Zhang
CPC分类号： H02P27/18 , H02M2005/2937 , H02P27/16
摘要： Exemplary embodiments or implementations are disclosed of methods, apparatus, and systems for operating motors in variable speed situations. In an exemplary implementation, a method of controlling a variable-speed motor includes defining a control duration as a predetermined number of cycles of a multiple-phase power supply. Each speed in a range of speeds is defined by a corresponding number of the cycles of the control duration. Power is provided to the motor from the power supply at a selected one of the speeds, by enabling input from the power supply for the number of the cycles of the control duration corresponding to the selected speed.
-
公开(公告)号：US20160043682A1
公开(公告)日：2016-02-11
申请号：US14821137
申请日：2015-08-07
申请人： QM Power, Inc.
IPC分类号： H02P25/16
摘要： A phase windings circuit for a motor includes at least two phase windings forming one half of motor phase windings of the circuit and at least two other phase windings forming another half of the motor phase windings of the circuit. A direct current (DC) power supply is located at least approximately at a midpoint of the motor phase windings to receive alternating current (AC) power transferred from one or more of the phase windings and convert the AC power to DC power. A first stage power switch circuit comprises at least one power switch outside of the DC power supply and is electrically connected at least approximately at a midpoint between phase windings on each half of the circuit. A second stage power switch circuit comprises at least one other power switch outside of the DC power supply and is electrically connected at least approximately at the midpoint of the divided phase windings to receive AC power from the motor divided phase windings. A non-collapsing DC power supply component prevents the DC power supply from collapsing when the at least one power switch or the at least one other power switch is on and conducting.
摘要翻译： 用于电动机的相绕组电路包括形成电路的电动机相绕组的一半的至少两个相绕组和形成电路的电动机相绕组的另一半的至少两个其它相绕组。 直流（DC）电源至少位于电动机相绕组的中点处，以接收从一个或多个相绕组传递的交流电（AC）电力，并将AC电力转换为直流电力。 第一级电源开关电路包括直流电源外部的至少一个电源开关，并且至少大致在电路的每一半的相绕组之间的中点处电连接。 第二级功率开关电路包括在直流电源外部的至少一个其它功率开关，并且至少大致在分开的相绕组的中点处电连接，以接收来自马达分相相绕组的交流电力。 当至少一个电源开关或至少一个其他电源开关导通时，非崩溃的直流电源组件防止直流电源塌陷。
-
公开(公告)号：US06870333B2
公开(公告)日：2005-03-22
申请号：US10168478
申请日：2000-12-13
摘要： Asynchronous motors are controlled by way of two- or three-phase controllers that include at least two pair of thyristors connected in antiparallel and fired at certain intervals. According to the inventive method, a fundamental wave with the desired frequency is defined for the first phase and in the other phase a respective fundamental wave is defined that has the same frequency as that in the first phase, but phase-shifted by corresponding values. For every phase, firing intervals are marked that have the same polarity as the respective fundamental wave. Those intervals of the potential firing intervals are used for every phase at which there is a potential firing interval in one of the two other phases. These intervals are used as the actual firing intervals.
摘要翻译： 异步电动机通过两相或三相控制器进行控制，其中包括至少两对晶闸管，以一定的间隔反平行连接和点火。 根据本发明的方法，对于第一相定义具有期望频率的基波，而在另一相中定义相应的基波，其具有与第一相中的频率相同的频率，但是相移相应的值。 对于每个相位，点火间隔被标记为具有与各个基波相同的极性。 对于在两个其它相中的一个相中存在潜在的点火间隔的每个相，都使用潜在点火间隔的间隔。 这些间隔用作实际的点火间隔。
-
公开(公告)号：US20170317634A1
公开(公告)日：2017-11-02
申请号：US15651643
申请日：2017-07-17
申请人： QM Power, Inc.
摘要： A circuit for a motor comprises at least two phase windings forming one half of motor phase windings of the circuit and at least two other phase windings forming another half of the motor phase windings of the circuit. A direct current (DC) power supply receives alternating current (AC) power transferred from one or more of the motor phase windings and converts the AC power to DC power. A first stage power switch circuit comprising at least one power switch is connected between the at least two phase windings on the one half of the motor phase windings of the circuit and between the at least two other phase windings on the other half of the motor phase windings of the circuit. A second stage power switch circuit comprising at least one other power switch is connected between the one half of the motor phase windings of the circuit and the other half of the motor phase windings of the circuit, the at least one other power switch to receive AC power from one or more of the motor phase windings. At least one non-collapsing DC power supply component prevents the DC power supply from collapsing when the at least one power switch is on.
-
公开(公告)号：US20150249399A1
公开(公告)日：2015-09-03
申请号：US14195152
申请日：2014-03-03
申请人： The Boeing Company
发明人： Robert J. Atmur
CPC分类号： H02M5/271 , H02M5/2573 , H02M2005/2937 , H02P23/00 , H02P27/18
摘要： A power frequency converter and an associated method are provided to convert an AC input signal at a first frequency, such as a first frequency that is permitted to vary within a range, to an AC output signal at a second frequency that is different than the first frequency and that may be fixed. The power frequency converter includes a plurality of power rectification modules. Each power rectification module includes a plurality of power rectification components for receiving different phases of an input signal at a first frequency. Each power rectification module is configured to provide an output signal to a load, such as an induction motor, at a second frequency. The power frequency converter also includes a controller configured to provide control signals to selectively enable the power rectification modules. The controller is configured to provide the control signals without synchronization to the first frequency.
摘要翻译： 提供电力变频器和相关联的方法以将第一频率（例如允许在一定范围内变化的第一频率）的AC输入信号以不同于第一频率的第二频率转换成AC输出信号 频率，可能是固定的。 电力变频器包括多个电力整流模块。 每个电力整流模块包括用于以第一频率接收输入信号的不同相位的多个电力整流部件。 每个功率整流模块被配置为以第二频率向诸如感应电动机的负载提供输出信号。 电力变频器还包括配置成提供控制信号以选择性地启用电力整流模块的控制器。 控制器被配置为提供控制信号而不与第一频率同步。
-
公开(公告)号：US20140312826A1
公开(公告)日：2014-10-23
申请号：US14354962
申请日：2012-10-29
发明人： Marcel Benecke
IPC分类号： H02P1/46
CPC分类号： H02P1/46 , H02P25/024 , H02P27/18
摘要： A method is disclosed for operating a synchronous machine via a three-phase power controller including three semiconductor controllers and connected to a three-phase network. The method includes determining the phase difference between the magnet-wheel voltage of the synchronous machine and the network voltage of the three-phase network; determining the rotational speed of the rotor of the synchronous machine; determining the phase position of the three-phase network; determining at least some of the stator currents of the synchronous machine; determining a decision characteristic number based upon an advance calculation of the torque curve in the event of activation of at least two of the semiconductor controllers while taking into account the current values for phase difference, rotational speed, stator current, and phase position; and determining at least one switching time point based upon the decision characteristic number, wherein the at least two semiconductor controllers are activated at the switching time point.
摘要翻译： 公开了一种通过包括三个半导体控制器并连接到三相网络的三相电力控制器来操作同步电机的方法。 该方法包括确定同步电机的磁轮电压与三相网络的网络电压之间的相位差; 确定同步电机转子的转速; 确定三相网络的相位; 确定所述同步电机的至少一些定子电流; 在考虑到相位差，转速，定子电流和相位位置的当前值的情况下，基于在激活至少两个半导体控制器的情况下的转矩曲线的预先计算来确定判定特性数; 以及基于所述决定特征数确定至少一个切换时间点，其中所述至少两个半导体控制器在所述切换时间点被激活。
-
公开(公告)号：US08368344B2
公开(公告)日：2013-02-05
申请号：US12593528
申请日：2008-01-26
申请人： Jae Yoo Yoo , Chang Oh Kim
发明人： Jae Yoo Yoo , Chang Oh Kim
CPC分类号： F25B49/025 , F25B2600/021 , F25B2700/15 , H02M1/10 , H02P27/18 , H02P2201/03 , Y02B30/741
摘要： A refrigerator and a method of operating the same are disclosed. In the refrigerator and the method of operating the same, a voltage of an electric power input is measured and rectified through the half wave rectification or the full wave rectification in correspondence with the measured voltage, so that the refrigerator can be used without a voltage converting device when a voltage of the input power is changed. Therefore, the change or the modification of the circuit is not needed in order to use the refrigerator in other regions. Since components are compatible and utility of the components is improved, manufacturing costs can be reduced.
摘要翻译： 公开了一种冰箱及其操作方法。 在冰箱及其操作方法中，电压输入的电压通过与所测量的电压对应的半波整流或全波整流进行测量和整流，从而可以在没有电压转换的情况下使用冰箱 当输入功率的电压变化时， 因此，为了在其他区域使用冰箱，不需要改变或修改电路。 由于部件兼容并且部件的实用性得到改善，所以可以降低制造成本。
-
8.发明申请METHOD AND DEVICE FOR OPERATING AN ASYNCHRONOUS MOTOR WITH INCREASED EFFICIENCY 有权具有提高效率的异步电动机的运行方法和装置公开(公告)号：US20130009590A1
公开(公告)日：2013-01-10
申请号：US13521795
申请日：2010-01-12
申请人： Bernd Nitz , Norbert Rudiger Klaes
发明人： Bernd Nitz , Norbert Rudiger Klaes
IPC分类号： H02P25/00
摘要： Method and device for operating an asynchronous motor having increased efficiency. According to the invention, ranges for a motor size of the asynchronous motor are specified. In addition, a value of the motor size is calculated depending on at least one measurement value of a measurement parameter during the operation of the asynchronous motor, wherein the respective calculated value of the motor size is allocated to one of the ranges. Furthermore, a control parameter is changed depending on the range to which the calculated motor parameter is allocated to provide an optimised control parameter such that the control parameter is changed beginning from a starting value specified for the respective range of the motor size until a predetermined criterion for a specific motor size is reached. Furthermore, the optimised control parameter is stored as a support point of a continuous optimal characteristic curve for the control parameter depending on the range to which the calculated motor size is allocated.The asynchronous motor can thus be more effectively operated by actuation by means of the provided continuous optimal characteristic curve.The invention also relates to a block wiring diagram for a corresponding device, to process diagrams for corresponding methods and to a computer program product for carrying out said method.
摘要翻译： 用于操作提高效率的异步电动机的方法和装置。 根据本发明，规定了异步电动机的电动机尺寸范围。 此外，电动机尺寸的值根据异步电动机的运行期间的测量参数的至少一个测量值来计算，其中将电动机尺寸的相应计算值分配给一个范围。 此外，控制参数根据计算的电动机参数被分配的范围而改变，以提供优化的控制参数，使得控制参数从针对电动机尺寸的各个范围指定的起始值开始改变直到预定标准 达到特定的电机尺寸。 此外，优化控制参数作为控制参数的连续最优特性曲线的支持点，根据分配计算出的电动机大小的范围进行存储。 因此，可以通过所提供的连续最优特性曲线的致动来更有效地操作异步电动机。 本发明还涉及用于相应设备的块接线图，用于处理相应方法的图和用于执行所述方法的计算机程序产品。
-
公开(公告)号：US10084406B2
公开(公告)日：2018-09-25
申请号：US14967996
申请日：2015-12-14
申请人： Emerson Electric Co.
发明人： Ping Shan , Cai Bing Zhang
CPC分类号： H02P27/18 , H02M2005/2937 , H02P27/16
摘要： Exemplary embodiments or implementations are disclosed of methods, apparatus, and systems for operating motors in variable speed situations. In an exemplary implementation, a method of controlling a variable-speed motor includes defining a control duration as a predetermined number of cycles of a multiple-phase power supply. Each speed in a range of speeds is defined by a corresponding number of the cycles of the control duration. Power is provided to the motor from the power supply at a selected one of the speeds, by enabling input from the power supply for the number of the cycles of the control duration corresponding to the selected speed.
-
公开(公告)号：US09948227B2
公开(公告)日：2018-04-17
申请号：US15651643
申请日：2017-07-17
申请人： QM Power, Inc.
摘要： A circuit for a motor comprises at least two phase windings forming one half of motor phase windings of the circuit and at least two other phase windings forming another half of the motor phase windings of the circuit. A direct current (DC) power supply receives alternating current (AC) power transferred from one or more of the motor phase windings and converts the AC power to DC power. A first stage power switch circuit comprising at least one power switch is connected between the at least two phase windings on the one half of the motor phase windings of the circuit and between the at least two other phase windings on the other half of the motor phase windings of the circuit. A second stage power switch circuit comprising at least one other power switch is connected between the one half of the motor phase windings of the circuit and the other half of the motor phase windings of the circuit, the at least one other power switch to receive AC power from one or more of the motor phase windings. At least one non-collapsing DC power supply component prevents the DC power supply from collapsing when the at least one power switch is on.
-
-
-
-
-
-
-
-
-
搜索结果
34 条记录 (耗时 0.013 秒)