公开(公告)号：US20040264225A1

公开(公告)日：2004-12-30

申请号：US10836121

申请日：2004-04-30

申请人： Ballard Power Systems Corporation

发明人： Vijay Bhavaraju ,  Kerry E. Grand ,  Anil Tuladhar

IPC分类号： H02M007/48

CPC分类号： G05F1/67 ,  Y02E10/58

摘要： The maximum power point (MPP) of a photovoltaic array that can be coupled to power inverter is determined. A capacitor on a DC-bus side of the inverter is used as a load from which I-V characteristics of the photovoltaic array can be generated. The photovoltaic array is connected to the capacitor, which has been previously discharged by a bleed down resistor. Short circuit current, open circuit voltage, and values of current and voltage as the capacitor charges are determined and used to generate I-V characteristics of the photovoltaic array. From the I-V characteristics, the MPP can be calculated.

摘要翻译： 确定可耦合到电力逆变器的光伏阵列的最大功率点（MPP）。 逆变器的直流母线侧的电容器被用作能够产生光伏阵列的I-V特性的负载。 光伏阵列连接到先前由泄放电阻器放电的电容器。 短路电流，开路电压以及作为电容器电荷的电流和电压值被确定并用于产生光伏阵列的I-V特性。 从I-V特性可以计算MPP。

公开(公告)号：US20040252531A1

公开(公告)日：2004-12-16

申请号：US10461933

申请日：2003-06-13

申请人： Ballard Power Systems Corporation

发明人： Bing Cheng ,  Fengtai Huang

IPC分类号： H02M001/12

CPC分类号： H02M7/49

摘要： A multilevel inverter control system having logic configured to substantially minimize an area difference between a target waveform and a step signal of a multilevel inverter.

摘要翻译： 一种多电平逆变器控制系统，其具有被配置为基本上最小化目标波形与多电平逆变器的步进信号之间的面积差的逻辑。

公开(公告)号：US20040230847A1

公开(公告)日：2004-11-18

申请号：US10664808

申请日：2003-09-17

申请人： Ballard Power Systems Corporation

发明人： Ajay V. Patwardhan ,  Douglas K. Maly ,  Sayeed Ahmed ,  Fred Flett

IPC分类号： G06F001/26

CPC分类号： H02M7/003 ,  H02M1/126 ,  H02M1/32

摘要： A power converter utilizes a high frequency capacitor and a bulk capacitor coupled across the DC terminals to reduce high frequency effect and voltage overshoot, leading to space and cost savings in power converter design. Each capacitor may be physically coupled adjacent the gate driver board via clips, clamps, and/or fasteners.

摘要翻译： 电源转换器利用高频电容器和耦合在直流端子上的大容量电容器来减少高频效应和电压过冲，从而节省电力转换器设计的空间和成本。 每个电容器可以通过夹子，夹具和/或紧固件物理耦合在栅极驱动器板附近。

公开(公告)号：US20040104718A1

公开(公告)日：2004-06-03

申请号：US10309793

申请日：2002-12-03

申请人： Ballard Power Systems Corporation

发明人： Douglas K. Maly

IPC分类号： G01R007/00

CPC分类号： G01R31/261

摘要： A non-invasive, non-destructive method and system for determining power transistor peak die voltage utilizes values for each of a plurality of parameters determined by measurement of external terminal voltages for any number of switches, such as transistors of an inverter. Stray inductance values are calculated and used with measured current gradient to calculate the peak die voltages for the switches. A refinement of the method determines transistor peak die voltage without measuring current

摘要翻译： 用于确定功率晶体管峰值管芯电压的非侵入性，非破坏性方法和系统利用通过测量任何数量的开关（例如逆变器的晶体管）的外部端子电压的测量而确定的多个参数中的每一个的值。 计算杂散电感值，并与测量电流梯度一起使用，以计算开关的峰值电压。 该方法的改进确定晶体管峰值管芯电压，而不测量电流

公开(公告)号：US20040015255A1

公开(公告)日：2004-01-22

申请号：US10346553

申请日：2003-01-16

申请人： Ballard Power Systems Corporation

发明人： Roy I. Davis

IPC分类号： G06F019/00

CPC分类号： B61C3/00 ,  Y02T30/10

摘要： A process for the optimization of the design of an electric power train system comprising a plurality of subsystems including identifying a plurality of variables associated with the plurality of subsystems of the electric power train system, wherein the plurality of variables interact, applying a plurality of constraints associated with the plurality of subsystems of the electric power train system to the plurality of variables, and manipulating the plurality of variables such that the plurality of constraints are met. The process also including identifying a plurality of cost drivers associated with the plurality of subsystems of the electric power train system, determining a plurality of weighting functions, applying the plurality of weighting functions to the plurality of cost drivers to generate a plurality of weighted cost drivers associated with the plurality of subsystems of the electric power train system, and summing the plurality of weighted cost drivers to generate a performance index associated with the electric power train system. The process further including comparing a plurality of electric power train system designs utilizing a performance index associated with each, wherein a given electric power train system design with a relatively lower performance index has a relatively lower cost.

摘要翻译： 一种用于优化电力系统设计的方法，包括多个子系统，包括识别与所述电力系统系统的多个子系统相关联的多个变量，其中所述多个变量相互作用，应用多个约束 与所述电力系统系统的所述多个子系统相关联到所述多个变量，以及操纵所述多个变量，使得满足所述多个约束。 该过程还包括识别与电力系统系统的多个子系统相关联的多个成本驱动因素，确定多个加权函数，将多个加权函数应用于多个成本驱动器以产生多个加权成本驱动器 与所述电力系统的所述多个子系统相关联，并且将所述多个加权成本驱动器相加以生成与所述电力系统系统相关联的性能指标。 该方法还包括使用与每个相关联的性能指标来比较多个电力系统设计，其中具有相对较低性能指标的给定电力系统设计具有相对较低的成本。

公开(公告)号：US20030214266A1

公开(公告)日：2003-11-20

申请号：US10346724

申请日：2003-01-16

申请人： Ballard Power Systems Corporation

发明人： Bing Cheng ,  Duo Deng ,  Fengtai Huang

IPC分类号： H02P001/46

CPC分类号： H02P6/06 ,  H02P25/03

摘要： Circuits and methods for use with an integrated circuit chip having internal back EMF estimation to control a permanent magnet synchronous motor includes an AC current feedback circuit, a scaling circuit, and a current regulator. Additionally, a speed regulator may be employed. In one embodiment, during operation at very low speed, the speed regulator is in an open loop control mode due to a back EMF detection limitation of the IC chip, and only the current regulator is active. A feedback current signal, together with a user-defined command current signal, serves the input of the current regulator, which controls the AC motor current and drives the motor speed from standstill. Once the motor speed reaches a certain level, the measured back EMF from the IC chip is sufficient to estimate the motor speed, which is compared with a user-defined command speed, and an error of the these two signals provides the input of a speed regulator.

摘要翻译： 与具有用于控制永磁同步电动机的内部反电动势估计的集成电路芯片一起使用的电路和方法包括AC电流反馈电路，缩放电路和电流调节器。 另外，可以采用速度调节器。 在一个实施例中，在以非常低的速度操作期间，由于IC芯片的反电动势检测限制，速度调节器处于开环控制模式，并且仅电流调节器有效。 反馈电流信号连同用户定义的指令电流信号一起用于电流调节器的输入，电流调节器控制交流电动机电流并驱动电机速度停止。 一旦电机速度达到一定水平，来自IC芯片的测量的反电动势就足以估计电机速度，这与用户定义的指令速度进行比较，这两个信号的误差提供了一个速度的输入 调节器

公开(公告)号：US20030164028A1

公开(公告)日：2003-09-04

申请号：US10345872

申请日：2003-01-15

申请人： Ballard Power Systems Corporation

发明人： Li Chen ,  Richard J. Hampo ,  Venkatapathi R. Nallapa

IPC分类号： G01L003/26

CPC分类号： H02P23/0004

摘要： Systems and methods for controlling an induction motor including detecting a field weakening operation state of the motor, wherein the field weakening operation state is detected when a flux current, Id, in the motor is reduced to a predetermined fraction of its normal, non-voltage limited value. The systems and methods also including disabling an overmodulation operation state of the motor before said field weakening operation state is detected and enabling the overmodulation operation state of the motor after said field weakening operation state is detected.

摘要翻译： 用于控制感应电动机的系统和方法包括检测电动机的弱磁操作状态，其中当电动机中的磁通电流Id被减小到其正常非电压的预定分数时，检测到弱磁操作状态 有限的价值。 检测到在所述弱磁操作状态之前禁止电动机的过调制操作状态的系统和方法，并且检测到所述弱磁操作状态之后的电动机的过调制操作状态。

公开(公告)号：US20030155165A1

公开(公告)日：2003-08-21

申请号：US10346554

申请日：2003-01-16

申请人： Ballard Power Systems Corporation

发明人： William Kelledes ,  Richard L. Willis

IPC分类号： B60K017/34

CPC分类号： B60K1/00 ,  B60K1/02 ,  B60K23/02 ,  B60K23/08 ,  B60L7/26 ,  B60L15/2036 ,  B60L2200/40 ,  B60L2240/421 ,  B60L2240/507 ,  B60L2260/28 ,  Y02T10/72 ,  Y02T10/7275

摘要： A motor vehicle drive train assembly for achieving multiple effective ratios from a single ratio transaxle enables application of a fixed ratio transaxle, such as used in electric vehicle drive trains, to a multi-speed requirement, for example, in airport ground support equipment. Multiple configurations are enabled by varying the relative speed of the outputs through the differential of the transaxle, such as bringing one of the outputs to zero, or by using another motor to control the speed of one of the outputs.

摘要翻译： 用于从单比率变速驱动桥获得多个有效比率的机动车辆传动系组件使得能够将例如用于电动车辆传动系的固定比例变速驱动桥应用于例如机场地面支撑设备的多速要求。 通过变速驱动桥的差动变化输出的相对速度，例如使其中一个输出为零，或通过使用另一个电机来控制其中一个输出的速度来启用多种配置。

公开(公告)号：US20030030395A1

公开(公告)日：2003-02-13

申请号：US10208251

申请日：2002-07-29

申请人： Ballard Power Systems Corporation

发明人： Richard J. Hampo ,  Yifan Zhao

IPC分类号： H02P007/00

CPC分类号： H02P6/08 ,  H02P23/20

摘要： A control system for a permanent magnet motor having low-resolution speed measurement is taught. The control system is comprised of a speed regulator, voltage regulator and current regulator. The speed regulator uses a speed command and a measured speed for calculating a desired motor voltage; the voltage regulator uses a voltage command and an applied motor voltage for calculating a motor current command; and the current regulator uses a current command and a motor phase current for calculating a desired motor voltage for use by said voltage regulator; thereby providing a low resolution speed measurement to be used in a high performance application.

摘要翻译： 教导了具有低分辨率速度测量的永磁电动机的控制系统。 控制系统由速度调节器，稳压器和电流调节器组成。 速度调节器使用速度指令和测量速度来计算所需的电机电压; 电压调节器使用电压指令和施加的电动机电压来计算电动机电流指令; 并且所述电流调节器使用电流指令和电动机相电流来计算由所述电压调节器使用的期望的电动机电压; 从而提供在高性能应用中使用的低分辨率速度测量。