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公开(公告)号：US6051952A
公开(公告)日：2000-04-18
申请号：US177928
申请日：1998-10-23
申请人： Julio C. Moreira , Arne M. Nystuen , Rosario Ciancimino , Donald R. Vander Molen , Ronald W. Holling
发明人： Julio C. Moreira , Arne M. Nystuen , Rosario Ciancimino , Donald R. Vander Molen , Ronald W. Holling
CPC分类号： H02P25/04
摘要： A motor controller for a single phase induction motor (SPIM), wherein the SPIM is driven by two windings, a line winding connected to the ac line and a control winding driven by the controller. The SPIM torque and hence the speed and direction is controlled by the voltage output of the controller for all speeds below the synchronous speed (set by ac line frequency). The controller adjusts the amplitude, the phase angle relative to the line winding, and the frequency of the voltage for the desired SPIM responses. The controller can also selectively switch power to the line winding for a different operating mode with both windings at below synchronous speed. Or, the controller can open the connection to the line winding after starting, and operate the SPIM via the control winding at any speed by adjusting the amplitude and frequency of the controller voltage.
摘要翻译： 用于单相感应电动机（SPIM）的电动机控制器，其中SPIM由两个绕组驱动，连接到ac线的线绕组和由控制器驱动的控制绕组。 SPIM扭矩，因此速度和方向由控制器的电压输出控制，所有速度低于同步速度（由交流线路频率设置）。 控制器调节幅度，相对于线绕组的相位角以及所需SPIM响应的电压频率。 控制器还可以在两个绕组处于低于同步速度的情况下，选择性地将功率切换到不同工作模式的线绕组。 或者，控制器可以在启动后打开与线绕组的连接，并通过调节控制器电压的幅度和频率，通过控制绕组以任意速度操作SPIM。
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公开(公告)号：US08084719B2
公开(公告)日：2011-12-27
申请号：US11041634
申请日：2005-01-24
CPC分类号： A47J37/0676 , A47J37/0694 , H05B3/68 , H05B2203/037
摘要： An electric cooking device with a cooking surface. The cooking surface includes a first heating element positioned under the cooking surface arranged to heat substantially the entire cooking surface to a first power density and a second heating element positioned under a portion the cooking surface arranged to heat approximately half of the cooking surface to a second power density. The second power density can be greater that the first power density. The electric cooking device can include a temperature regulator and a selector connected to the first heating element and the second heating element arranged to selectively connect the first heating element or the second heating element through the temperature regulator to a power source.
摘要翻译： 具有烹饪面的电烹饪装置。 烹饪表面包括位于烹饪表面下方的第一加热元件，其布置成基本上将整个烹饪表面加热至第一功率密度;以及第二加热元件，其位于烹饪表面布置成将烹饪表面的大约一半加热到第二加热元件的第二加热元件 功率密度 第二功率密度可以大于第一功率密度。 电烹饪装置可以包括连接到第一加热元件的温度调节器和选择器，以及布置成通过温度调节器将第一加热元件或第二加热元件选择性地连接到电源的第二加热元件。
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公开(公告)号：US09272314B2
公开(公告)日：2016-03-01
申请号：US12339666
申请日：2008-12-19
CPC分类号： B08B9/00 , A47L15/0015 , A47L15/4234 , A47L15/4236 , A47L2601/04 , A61L2/04 , A61L2202/17 , B08B9/08
摘要： A steam purge method for a dishwasher includes a washing cycle, a steam purge cycle and a rinse cycle. During the steam purge cycle, a dishwasher tub is filled with fluid to a level below a heating element in a wash chamber, heated and at least partially converted to steam in the wash chamber. After the steam purge cycle, the dishwasher is drained and the rinse cycle commences. Optionally, a heated drying cycle may be performed upon termination of the rinse cycle. A single heating element arranged in the wash chamber is utilized for heating washing fluid during each of washing, purging and steam generation cycles, as well as for the heated drying cycle.
摘要翻译： 用于洗碗机的蒸汽吹扫方法包括洗涤循环，蒸汽吹扫循环和漂洗循环。 在蒸汽清洗循环期间，洗碗机桶中充满流体至洗涤室内的加热元件以下的水平面，在洗涤室中被加热并至少部分转化为蒸汽。 蒸汽清洗循环后，洗碗机排干，冲洗循环开始。 任选地，可以在漂洗循环结束时进行加热的干燥循环。 布置在洗涤室中的单个加热元件用于在洗涤，清洗和蒸汽发生循环期间以及加热的干燥循环中的每一个中加热洗涤流体。
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公开(公告)号：US5473240A
公开(公告)日：1995-12-05
申请号：US175598
申请日：1993-12-30
申请人： Julio C. Moreira
发明人： Julio C. Moreira
摘要： A method and apparatus for controlling operation of a brushless permanent magnet motor wherein a signal containing third harmonic component of the motor flux density is acquired and filtered to isolate the third harmonic components, the filtered third harmonic components are integrated to produce a time integral signal, the back EMF of one stator phase is sensed and the resulting EMF signal is filtered zero crossings of the filtered signals are sensed and then employed to drive an inverter controller.
摘要翻译： 一种用于控制无刷永磁电动机的操作的方法和装置，其中获取包含电动机磁通密度的三次谐波分量的信号并对其进行滤波以隔离三次谐波分量，滤波的三次谐波分量被积分以产生时间积分信号， 检测到一个定子相位的反电动势，并且所得到的EMF信号被滤波，滤波后的信号被过零检测，然后用于驱动逆变器控制器。
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公开(公告)号：US5883490A
公开(公告)日：1999-03-16
申请号：US837662
申请日：1997-04-22
申请人： Julio C. Moreira
发明人： Julio C. Moreira
CPC分类号： H02P25/04
摘要： A motor controller for a single phase induction motor (SPIM), wherein the SPIM is driven by a square wave above or below rated frequencies. The square wave may be shaped by introducing one or more notches to eliminate or suppress undesirable harmonics, to reduce the amplitude of the fundamental, to provide desirable voltage control, or to provide desirable voltage to frequency control. The control topology may include switches, main winding taps and switchable capacitors to accommodate selection between line and square wave driving, temporary capacitance increases, or other advantages.
摘要翻译： 用于单相感应电动机（SPIM）的电动机控制器，其中SPIM由方波高于或低于额定频率驱动。 可以通过引入一个或多个凹口来消除或抑制不期望的谐波，减小基波的幅度，提供所需的电压控制或提供所需的电压到频率控制来成形方波。 控制拓扑可以包括开关，主绕组抽头和可切换电容器，以适应线路和方波驱动之间的选择，临时电容增加或其他优点。
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公开(公告)号：US5510689A
公开(公告)日：1996-04-23
申请号：US171565
申请日：1993-12-21
申请人： Thomas A. Lipo , Julio C. Moreira
发明人： Thomas A. Lipo , Julio C. Moreira
CPC分类号： H02P21/141 , H02P21/18 , H02P6/187
摘要： Methods and apparatus are provided wherein air gap fundamental flux magnitude and relative position are determined from stator voltage third harmonic components and stator current in operating alternating current machines having a stator, a rotor and an air gap therebetween. Such determinations have various uses, such as for efficiency control.
摘要翻译： 提供了方法和装置，其中在具有定子，转子和它们之间的空气间隙的操作交流电机中，从定子电压三次谐波分量和定子电流确定气隙基本通量幅度和相对位置。 这种确定具有各种用途，例如用于效率控制。
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公开(公告)号：US5481166A
公开(公告)日：1996-01-02
申请号：US175596
申请日：1993-12-30
申请人： Julio C. Moreira
发明人： Julio C. Moreira
摘要： A method and system for controlling operation of a brushless permanent magnet motor having stator windings in star configuration in which back EMF fundamental and third harmonic components are induced, a rotor which rotates relative to the stator windings, and an inverter operatively coupled to the motor to drive same, wherein a star configuration of resistors is coupled to nodes of the inverter and third harmonic components of the flux density of the motor are obtained from across an artificial neutral node present in a network coupled to the stator phase nodes and either the stator neutral node or a direct current midpoint reference node positioned between the direct current nodes of an inverter used to drive the motor. The network preferably is a stator network of resistors each of which is coupled between one stator phase node and the artificial neutral node.
摘要翻译： 一种用于控制无刷永磁电动机的方法和系统，其具有星型结构的定子绕组，其中感应反电动势基波和三次谐波分量，相对于定子绕组旋转的转子和可操作地耦合到电动机的反相器 驱动相同，其中电阻器的星形配置耦合到逆变器的节点，并且从电流耦合的网络中存在的人造中性节点和定子中性点之间获得电动机的磁通密度的三次谐波分量 节点或位于用于驱动电动机的逆变器的直流节点之间的直流中点参考节点。 网络优选地是电阻器的定子网络，每个电网耦合在一个定子相位节点和人造中性点之间。
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公开(公告)号：US5334923A
公开(公告)日：1994-08-02
申请号：US858172
申请日：1992-03-27
CPC分类号： H02P21/141 , H02P21/18 , H02P6/187
摘要： A method and apparatus for controlling torque by correcting slip gain error in an operating induction motor is provided. This is accomplished by measuring the amplitude and position of a flux in the motor such as rotor flux. Rotor flux position and amplitude can be estimated from the air gap flux. The slip gain can then be corrected in a single step or a few steps to provide a deadbeat control.
摘要翻译： 提供了一种通过校正操作感应电动机中的滑移增益误差来控制转矩的方法和装置。 这是通过测量电机中的磁通量的幅度和位置来实现的，例如转子磁通。 转子通量位置和振幅可以从气隙通量估计。 然后可以在单个步骤或几个步骤中校正滑移增益以提供无节拍控制。
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公开(公告)号：US07909936B2
公开(公告)日：2011-03-22
申请号：US12339827
申请日：2008-12-19
CPC分类号： A47L15/4234 , A47L15/0005 , A47L15/0015 , A47L15/4236 , A47L2601/04
摘要： An overall dishwasher operation cycle includes a washing cycle and a final rinse cycle including steam generation. During the final rinse cycle, a dishwasher tub is filled with fluid, heated and utilized to rinse dishware within the dishwasher. After partially draining the tub, a heating element is actuated so as to transform fluid in the tub into steam for cleansing dishware within the dishwasher. After the steam cycle, the final rinse cycle is completed, with the dishwasher being drained. Optionally, when a heated dry cycle is actuated, the heating element continues to operate to provide drying heat to dishware for a period of time before being deactivated. With this arrangement, a single heating element is utilized for heating washing fluid for washing, rinsing and steam generation, as well as for the heated dry cycle.
摘要翻译： 整体洗碗机操作循环包括洗涤循环和包括蒸汽产生的最终漂洗循环。 在最后的漂洗循环期间，洗碗机桶充满流体，加热并用于冲洗洗碗机内的餐具。 在部分排出桶之后，启动加热元件，以将浴缸中的流体变成蒸汽，以清洗洗碗机内的餐具。 在蒸汽循环之后，完成最后的漂洗循环，洗碗机被排出。 任选地，当致动加热的干燥循环时，加热元件继续操作以在停用之前一段时间向餐具提供干燥热。 利用这种布置，单个加热元件用于加热用于洗涤，漂洗和蒸汽产生以及加热的干燥循环的洗涤液。
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公开(公告)号：US5422570A
公开(公告)日：1995-06-06
申请号：US175597
申请日：1993-12-30
申请人： Julio C. Moreira
发明人： Julio C. Moreira
摘要： A method and system for sensing the rotor speed of a brushless permanent magnet motor wherein a signal containing isolated third harmonic components of the flux density is acquired, and the absolute values of the maximas of the signal are measured, the last measured absolute maxima representing the current rotor speed of the motor.
摘要翻译： 一种用于感测无刷永磁电动机的转子速度的方法和系统，其中获取包含通量密度的隔离三次谐波分量的信号，并且测量信号的最大值的绝对值，表示最大值的绝对最大值 当前电机的转子转速。
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