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公开(公告)号：US07161819B2
公开(公告)日：2007-01-09
申请号：US10896665
申请日：2004-07-22
IPC分类号： H02M7/5387 , H02M3/24 , G05B11/28 , G05F1/00
CPC分类号： H02M7/53873
摘要： An apparatus and method for controlling sinusoidal currents in inductive loads during zero-crossing to reduce distortion. The apparatus and method utilizes first and second PWM signals during a single PWM cycle to apply opposite voltage signals to obtain a net desired voltage across the inductive load. The voltage applied to the load is compared with a threshold and, when the applied voltage is greater than the threshold, normal PWM signals are applied to the load, and when the applied voltage is less than the threshold, an adjusted voltage formed of first and second PWM signals is applied to the load.
摘要翻译： 用于在零交叉期间控制感性负载中的正弦电流以减少失真的装置和方法。 该装置和方法在单个PWM周期期间利用第一和第二PWM信号来施加相反的电压信号以获得整个感性负载上的净期望电压。 将施加到负载的电压与阈值进行比较，并且当施加的电压大于阈值时，将正常的PWM信号施加到负载，并且当施加的电压小于阈值时，调整的电压由第一和 第二个PWM信号被施加到负载。
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公开(公告)号：US20050093499A1
公开(公告)日：2005-05-05
申请号：US10698574
申请日：2003-10-31
CPC分类号： B62D5/0487 , B62D5/0484 , H02P29/02
摘要： A fault-handling system for a 2-phase motor. When an electric motor is used for power assist in a steering system in a vehicle, malfunctions can cause loss of assist, and detectable vibration. The invention utilizes a 2-phase motor in such an application, and implements alternate modes of operation when certain malfunctions occur, thereby maintaining the assist function in situations wherein the function would otherwise be lost or reduced.
摘要翻译： 2相电机故障处理系统。 当电动机用于车辆转向系统的动力辅助时，故障可能导致辅助失效和可检测的振动。 本发明在这种应用中使用了一个2相电动机，并且在发生某些故障时实现了另一种操作模式，从而在功能否则会丢失或减少的情况下保持辅助功能。
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公开(公告)号：US20050263330A1
公开(公告)日：2005-12-01
申请号：US10857237
申请日：2004-05-28
IPC分类号： B60K1/00
CPC分类号： H02P21/14 , B62D5/046 , B62D5/0463
摘要： A control system for a brushless DC motor, preferably used in a power steering system in a vehicle. Presently delivered torque is computed without measuring currents in the motor. A demanded torque signal is received, and a torque error signal is produced. The torque error signal is modified by an inertial torque component, if the motor is accelerating. In response to the modified error signal, the control system first attempts to increase motor torque by increasing motor voltage, if that is possible, without increasing magnetic field which is parallel with the magnetic field of the rotor. If that is not possible, then motor voltage is held fixed, and the magnetic field just mentioned is increased.
摘要翻译： 一种用于无刷直流电机的控制系统，优选用于车辆中的动力转向系统。 在不测量电机中的电流的情况下计算出当前的扭矩。 接收到要求的转矩信号，产生转矩误差信号。 如果电机正在加速，则转矩误差信号由惯性转矩分量改变。 响应于修改的误差信号，控制系统首先尝试通过增加电动机电压来增加电动机转矩，如果可能的话，则不增加与转子磁场平行的磁场。 如果不可能，则电机电压保持固定，刚刚提到的磁场增加。
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公开(公告)号：US20050069301A1
公开(公告)日：2005-03-31
申请号：US10675372
申请日：2003-09-30
申请人： Thomas Gallagher , Hong Jiang , Sergei Kolomeitsev , Benjamin Miciano , Pirakalathan Pathmanathan , John Suriano
发明人： Thomas Gallagher , Hong Jiang , Sergei Kolomeitsev , Benjamin Miciano , Pirakalathan Pathmanathan , John Suriano
CPC分类号： H02P29/50
摘要： System for reducing electronic noise in a radio in a vehicle. Pulse Width Modulated, PWM, motors used in a vehicle receive pulses of electric current. These pulses have a Fourier spectrum of harmonics which can be picked up by a radio in the vehicle, causing the radio to produce unwanted noise. The invention reduces the noise by continually varying the base frequency of the PWM pulses, to thereby vary the spectrum of the noise. This varying spectrum is more difficult for humans to detect.
摘要翻译： 用于减少车辆无线电中的电子噪声的系统。 脉宽调制，PWM，车辆中使用的电机接收电流脉冲。 这些脉冲具有谐波的傅里叶谱，其可以由车辆中的无线电拾取，导致无线电产生不想要的噪声。 本发明通过连续地改变PWM脉冲的基频来降低噪声，从而改变噪声的频谱。 这种变化的光谱对于人类来说更难检测。
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公开(公告)号：US20060067022A1
公开(公告)日：2006-03-30
申请号：US10955618
申请日：2004-09-30
IPC分类号： H02H3/18
CPC分类号： B62D5/0487 , B62D5/0484 , H02H11/002
摘要： A control system for an electric motor used to provide mechanical power to a power steering system in a vehicle. The motor is of the two-phase type with an independent winding for each phase, or of the three-phase type with two independent stator windings. Two inverters are provided, one for each winding. Each inverter provides AC current to run the motor. If a fault is detected in an inverter or its stator winding, current is terminated to that inverter, and the motor is run using the other winding. In addition, if the vehicle battery is installed with incorrect polarity, components within the inverters can be destroyed. The invention detects the incorrect polarity, and blocks current to the inverters.
摘要翻译： 一种用于向车辆中的动力转向系统提供机械动力的用于电动机的控制系统。 电机为两相，每相具有独立绕组，或具有两个独立定子绕组的三相型。 提供两个逆变器，每个绕组一个。 每个变频器提供交流电流来运行电机。 如果在变频器或其定子绕组中检测到故障，则电流终止于该逆变器，并且电机使用另一个绕组运行。 另外，如果车载电池安装的极性不正确，则可能会损坏变频器内的部件。 本发明检测到不正确的极性，并阻止逆变器的电流。
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公开(公告)号：US20060018139A1
公开(公告)日：2006-01-26
申请号：US10896665
申请日：2004-07-22
IPC分类号： H02M7/5387
CPC分类号： H02M7/53873
摘要： An apparatus and method for controlling sinusoidal currents in inductive loads during zero-crossing to reduce distortion. The apparatus and method utilizes first and second PWM signals during a single PWM cycle to apply opposite voltage signals to obtain a net desired voltage across the inductive load. The voltage applied to the load is compared with a threshold and, when the applied voltage is greater than the threshold, normal PWM signals are applied to the load, and when the applied voltage is less than the threshold, an adjusted voltage formed of first and second PWM signals is applied to the load.
摘要翻译： 用于在零交叉期间控制感性负载中的正弦电流以减少失真的装置和方法。 该装置和方法在单个PWM周期期间利用第一和第二PWM信号来施加相反的电压信号以获得整个感性负载上的净期望电压。 将施加到负载的电压与阈值进行比较，并且当施加的电压大于阈值时，将正常的PWM信号施加到负载，并且当施加的电压小于阈值时，调整的电压由第一和 第二个PWM信号被施加到负载。
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公开(公告)号：US20050093493A1
公开(公告)日：2005-05-05
申请号：US10698567
申请日：2003-10-31
摘要： A control system for an electric motor. Field Oriented Control, FOC, uses a digital control system, and attempts to maintain the rotating stator magnetic field ninety degrees ahead of the rotor field, in order to maximize torque. However, if a three-phase motor is used, which is very common, large amounts of computation are required, to convert from a three-phase coordinate system to an orthogonal coordinate system. The invention replaces the three-phase motor with a two-phase motor, which has been found to impose certain additional costs, but also provides benefits.
摘要翻译： 一种电动机控制系统。 磁场定向控制，FOC，使用数字控制系统，并尝试在旋转磁场前90度保持旋转的定子磁场，以最大化转矩。 然而，如果使用三相电动机，这是非常普遍的，需要大量的计算，以将三相坐标系转换成正交坐标系。 本发明用三相电动机取代了三相电动机，这种电动机已经被发现施加一定的附加成本，但也提供了益处。
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公开(公告)号：US20050067913A1
公开(公告)日：2005-03-31
申请号：US10675465
申请日：2003-09-30
申请人： Sergei Kolomeitsev , John Suriano
发明人： Sergei Kolomeitsev , John Suriano
摘要： An electric motor having reduced cogging torque. Motors have stator teeth separated by a slot, or space, which is filled with air and/or copper. The magnetic field present in the space is reduced, compared to that present in the iron cores. Thus, when the rotor rotates, it sees a changing magnetic field as it passes a tooth face, then a slot, and then a neighboring tooth face. This change can produce a force or cogging torque in the motor. The invention changes the geometry of the tooth face and slot to reduce variation of reluctance and increase overall flux of the stator.
摘要翻译： 具有减小的齿槽转矩的电动机。 电机具有通过空隙和/或铜填充的槽或空间分开的定子齿。 与铁芯中存在的磁场相比，存在于该空间中的磁场减小。 因此，当转子旋转时，当其通过齿面，然后通过狭槽，然后相邻的齿面时，其看到变化的磁场。 这种变化可能会在电机中产生力或齿槽转矩。 本发明改变了齿面和槽的几何形状，以减小磁阻的变化并增加定子的整体通量。
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公开(公告)号：US20050174006A1
公开(公告)日：2005-08-11
申请号：US10773967
申请日：2004-02-06
申请人： Sergei Kolomeitsev , John Suriano
发明人： Sergei Kolomeitsev , John Suriano
摘要： An improved stator for an electric motor. In one form of the invention, each stator slot in a stator contains only coils of a single phase. Thus, if a short occurs in that coil, no other phase is present in the slot for the short to connect with. In another form of the invention, pre-formed coils are constructed, having hollow cores. Each coil is inserted over a stator tooth, and then additional structure is added to form a rim from which the teeth extend, somewhat like spokes on a wheel.
摘要翻译： 一种用于电动机的改进的定子。 在本发明的一种形式中，定子中的每个定子槽仅包含单相的线圈。 因此，如果在该线圈中发生短路，则在短路连接的槽中不存在其它相位。 在本发明的另一种形式中，预制的线圈被构造成具有中空的芯。 每个线圈插入定子齿上，然后加上附加的结构以形成轮缘，齿轮稍微延伸一些轮缘上的轮辐。
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