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    SINGLE PROCESSOR DUAL MOTOR CONTROL
    22.
    发明申请
    SINGLE PROCESSOR DUAL MOTOR CONTROL 有权
    单处理器双电机控制

    公开(公告)号：US20080303470A1

    公开(公告)日：2008-12-11

    申请号：US11758941

    申请日：2007-06-06

    申请人： Steven E. Schulz ,  Terry Murrell

    发明人： Steven E. Schulz ,  Terry Murrell

    IPC分类号： G05B11/32 ,  G05B21/02

    CPC分类号： H02P5/74

    摘要： A motor control processor is provided for motor phase current sampling of multiple variable frequency controlled electric motors. The motor control processor comprises an analog-to-digital (A/D) converter and a controller. The A/D converter has multiple analog inputs and generates a digital output signal in response to the multiple analog inputs. The controller is coupled to the A/D converter and determines a maximum desired switching frequency for a first one of the multiple variable frequency controlled electric motors. The controller further selects a base period in response to the maximum desired switching frequency and defines a phase shift time delay as a fraction of the base period so that the controller may control the multiple analog inputs of the A/D converter to sample motor phase currents of each of the multiple variable frequency controlled electric motors at sample times determined by the controller in response to the base period and the phase shift time delay.

    摘要翻译： 提供电机控制处理器用于多个可变频率控制电动机的电机相电流采样。 电动机控制处理器包括模数（A / D）转换器和控制器。 A / D转换器具有多个模拟输入，并响应多个模拟输入产生数字输出信号。 控制器耦合到A / D转换器，并确定多个可变频率控制的电动机中的第一个的最大期望开关频率。 控制器还响应于最大期望开关频率选择基准周期，并将相移时间延迟定义为基准周期的一部分，使得控制器可以控制A / D转换器的多个模拟输入以对电机相电流进行采样 在由控制器响应于基准周期和相移时间延迟确定的采样时间的多个可变频率控制电动机中的每一个。

    BIDIRECTIONAL NO LOAD CONTROL WITH OVERSHOOT PROTECTION
    23.
    发明申请
    BIDIRECTIONAL NO LOAD CONTROL WITH OVERSHOOT PROTECTION 有权
    双向无负载控制与海洋保护

    公开(公告)号：US20080284387A1

    公开(公告)日：2008-11-20

    申请号：US11748106

    申请日：2007-05-14

    申请人： KEMING CHEN ,  Steven E. Schulz

    发明人： KEMING CHEN ,  Steven E. Schulz

    IPC分类号： G05F1/00

    CPC分类号： H02M1/32 ,  H02M3/33576 ,  H02M3/3378

    摘要： A method of operating an isolated bi-directional dc/dc converter to provide voltage regulation at a no-load condition over a wide voltage range and also provide overshoot protection for the boost mode main switching transistors uses new boost mode drive waveforms. The new waveforms drive switches S2 and S4 to be turned off during boost mode and only S1 and S3 are switched to provide reverse energy flow at no-load. In boost mode, C1 and C2 provide overshoot protection caused by leakage inductance of the isolation transformer when boost mode drive transistors turn off during forward energy flow and provide stored energy for reverse energy flow during reverse energy flow periods used for voltage regulation in the boost mode. In buck mode, C1 and C2 provide soft switching for buck mode main switching transistors S2 and S4.

    摘要翻译： 一种隔离双向dc / dc转换器的运行方式，可在宽电压范围内的无负载状态下提供电压调节，并为升压模式主开关晶体管提供过冲保护，采用新的升压模式驱动波形。 新的波形驱动开关S 2和S 4在升压模式下关闭，只有S 1和S 3被切换以在空载时提供反向能量流。 在升压模式下，当升压模式驱动晶体管在正向能量流动期间关断时，C 1和C 2提供由隔离变压器的漏感引起的过冲保护，并在用于电压调节的反向能量流期间提供反向能量流的存储能量 升压模式。 在降压模式下，C 1和C 2为降压模式主开关晶体管S 2和S 4提供软开关。

    REDUCTION OF SUBHARMONIC OSCILLATION AT HIGH FREQUENCY OPERATION OF A POWER INVERTER
    24.
    发明申请
    REDUCTION OF SUBHARMONIC OSCILLATION AT HIGH FREQUENCY OPERATION OF A POWER INVERTER 有权
    降低功率变换器高频运行时的次谐波振荡

    公开(公告)号：US20080197800A1

    公开(公告)日：2008-08-21

    申请号：US11676527

    申请日：2007-02-20

    申请人： Bonho Bae ,  Nitinkumar R. Patel ,  Steven E. Schulz ,  Silva Hiti

    发明人： Bonho Bae ,  Nitinkumar R. Patel ,  Steven E. Schulz ,  Silva Hiti

    IPC分类号： H02P27/04

    CPC分类号： B60L15/025 ,  B60L11/1803 ,  B60L15/20 ,  B60L2210/20 ,  B60L2220/14 ,  H02P21/04 ,  Y02T10/643 ,  Y02T10/7005 ,  Y02T10/725 ,  Y02T10/7275

    摘要： A control architecture for an electrical inverter includes a synchronous frame current regulator and a stationary frame current regulator. The stationary frame current regulator receives input currents that represent filtered versions of stationary frame currents that correspond to the inverter output currents. The control architecture employs an adaptive filter module that filters the stationary frame currents to remove the fundamental motor frequency component (and its related harmonics), thus extracting any low frequency harmonic components. The stationary frame current regulator processes the low frequency components, while the synchronous frame current regulator processes the fundamental frequency component, resulting in suppression of low frequency oscillations in the inverter output.

    摘要翻译： 用于电力逆变器的控制架构包括同步电流调节器和静止电流调节器。 静态框架电流调节器接收表示对应于逆变器输出电流的静态框电流的滤波版本的输入电流。 控制架构采用自适应滤波器模块，对固定电流进行滤波，去除基波电机频率分量（及其相关谐波），从而提取任何低频谐波分量。 静态电流调节器处理低频分量，而同步电流调节器处理基频分量，从而抑制逆变器输出中的低频振荡。

    Dead-time compensation method for electric drives
    27.
    发明授权
    Dead-time compensation method for electric drives 有权
    电驱动器的死区补偿方法

    公开(公告)号：US07286375B1

    公开(公告)日：2007-10-23

    申请号：US11625962

    申请日：2007-01-23

    申请人： Brian A Welchko ,  Silva Hiti ,  Steven E. Schulz

    发明人： Brian A Welchko ,  Silva Hiti ,  Steven E. Schulz

    IPC分类号： H02M1/12 ,  H02M7/68 ,  H02M7/44

    CPC分类号： H02M7/53803 ,  H02M2001/385

    摘要： Methods and apparatus are provided for compensating for a deviation in voltage output of a phase leg inverter when dead-time periods are inserted to prevent shoot-through failures. The method includes determining a pulse width for an input signal to the inverter such that the inverter voltage output is a desired amount. The pulse width is based on the non-inverted or inverted pulse sequences of two carrier signals and the polarity of current through the inverter. An amount of pulse width is added to the input signal when the current is positive, and an amount of pulse width is subtracted from the input signal when the current is negative. An additional amount of pulse width is added to or subtracted from the input signal depending on whether the carrier signal sequence changes from a non-inverted signal to an inverted signal or changes from an inverted signal to a non-inverted signal, respectively.

    摘要翻译： 提供了方法和装置，用于在插入死区时间时补偿相位臂逆变器的电压输出偏差，以防止直通故障。 该方法包括：确定用于反相器的输入信号的脉冲宽度，使得逆变器电压输出为期望的量。 脉冲宽度基于两个载波信号的非反相或反相脉冲序列以及通过反相器的电流极性。 当电流为正时，将一定量的脉冲宽度加到输入信号上，当电流为负时，从输入信号中减去一定量的脉冲宽度。 根据载波信号序列是否从非反相信号改变为反相信号，或分别从反相信号改变为非反相信号，将附加量的脉冲宽度加到输入信号或从输入信号中减去。

    Method and system for managing processor execution time utilizing variable frequency switching
    29.
    发明授权
    Method and system for managing processor execution time utilizing variable frequency switching 有权
    使用可变频率切换管理处理器执行时间的方法和系统

    公开(公告)号：US06979968B2

    公开(公告)日：2005-12-27

    申请号：US10676529

    申请日：2003-10-01

    申请人： James M. Nagashima ,  Thomas P. O'Meara ,  Nitinkumar R. Patel ,  Steven E. Schulz

    发明人： James M. Nagashima ,  Thomas P. O'Meara ,  Nitinkumar R. Patel ,  Steven E. Schulz

    IPC分类号： H02P3/00 ,  H02P5/00 ,  H02P23/00

    CPC分类号： H02P23/0004

    摘要： The present invention includes a method for managing processor execution time in a motor controller. The method includes receiving motor speed data, comparing the received motor speed data to predetermined motor speed ranges, determining a motor speed range based on the comparison, and modulating an inverter switching frequency of the motor controller processor based on the motor speed range. The step of receiving motor speed data may include receiving machine terminal information, processing the received machine terminal information utilizing a sensorless control algorithm, and determining motor speed data based on the processed information. The step of modulating the inverter switching frequency may include determining a modified inverter switching frequency value based on the determined motor speed range and providing the modified inverter switching frequency value to a processor control algorithm. In one embodiment, the processor control algorithm modifies the inverter switching frequency based on the modified inverter switching frequency value.

    摘要翻译： 本发明包括一种用于在马达控制器中管理处理器执行时间的方法。 该方法包括接收电动机速度数据，将接收到的电动机速度数据与预定的电动机速度范围进行比较，基于比较确定电动机速度范围，以及基于电动机速度范围来调制电动机控制器处理器的逆变器开关频率。 接收电动机速度数据的步骤可以包括接收机器终端信息，利用无传感器控制算法处理所接收的机器终端信息，以及基于处理的信息确定电动机速度数据。 调制逆变器开关频率的步骤可以包括基于所确定的电动机速度范围确定修正的逆变器开关频率值，并将修改的逆变器开关频率值提供给处理器控制算法。 在一个实施例中，处理器控制算法基于经修改的逆变器开关频率值来修改逆变器开关频率。