公开(公告)号：US20060061922A1

公开(公告)日：2006-03-23

申请号：US10947038

申请日：2004-09-22

申请人： Rasvan Mihai ,  Eugene Trandafir ,  David Leboe

发明人： Rasvan Mihai ,  Eugene Trandafir ,  David Leboe

IPC分类号： H02H7/06

CPC分类号： B60W20/13 ,  B60L3/0046 ,  B60L3/0053 ,  B60L58/40 ,  B60W10/08 ,  B60W10/26 ,  B60W10/28 ,  B60W20/00 ,  B60W20/11 ,  B60W2510/244 ,  B60W2510/246 ,  H01M6/50 ,  H01M16/006 ,  H02J7/34 ,  H02J2001/004 ,  Y02T90/34

摘要： This application relates to an energy storage device protection circuit for use in a hybrid system supplying power to an active dynamic DC load, such as an electric vehicle drive. The circuit prevents over-discharge of the energy storage device and ensures that the system will be capable of delivering a minimum acceptable level of power to the load, even when the energy storage device is in a low state of charge or other de-rated mode. The hybrid system includes a power generator such as fuel cell capable of supplying at least the average power value requirements of the load and an energy storage device such as a battery or capacitor capable of supplying at least the difference between the peak power requirements of the load and the average power value. A controller is provided for controlling the relative supply of power to the load from the power generator and the energy storage device. The protection circuit is in series with the energy storage device and may include a first switch controllable by the controller, a diode in parallel with the first switch and optionally a current-limiting impedance in parallel with the first switch. The system may be implemented in lift trucks and the like to prevent overdriving of the vehicle in a low state of charge condition while permitting the operator to safely return the vehicle to a service location. The system regulates the output of the fuel cell in both the normal and de-rated operating modes to avoid load-following operation.

摘要翻译： 本申请涉及一种用于向诸如电动车辆驱动器的主动动态DC负载供电的混合动力系统中的能量存储装置保护电路。 该电路防止能量存储装置的过度放电，并且确保系统能够向负载提供最小可接受的电力水平，即使当储能装置处于低充电状态或其他降额模式 。 混合动力系统包括诸如能够至少提供负载的平均功率值要求的燃料电池的发电机和能够至少提供负载的峰值功率要求之间的差异的电池或电容器的能量存储装置 和平均功率值。 提供控制器，用于控制来自发电机和能量存储装置的负载的相对电力供应。 保护电路与能量存储装置串联，并且可以包括可由控制器控制的第一开关，与第一开关并联的二极管和可选地与第一开关并联的限流阻抗。 该系统可以在起重车等中实现，以防止车辆在低充电状态下的过度驱动，同时允许操作者将车辆安全地返回到服务位置。 该系统在正常和降额运行模式下调节燃料电池的输出，以避免负载跟随操作。

公开(公告)号：US20060015274A1

公开(公告)日：2006-01-19

申请号：US10893075

申请日：2004-07-16

申请人： Eugene Trandafir ,  Jerome Ronne ,  Minjie Shi ,  Rasvan Mihai

发明人： Eugene Trandafir ,  Jerome Ronne ,  Minjie Shi ,  Rasvan Mihai

IPC分类号： G01R19/00

CPC分类号： H02M3/33515 ,  H02M3/157 ,  H02M2001/0009

摘要： A method and apparatus for digitally controlling the average input current of a switch mode power supply are disclosed. In preferred embodiments, the switch mode power supplies are DC-DC converters. One aspect of the invention relates to a method for controlling the switch of a switch mode power supply by digitally sampling the input current once during each power supply switching cycle at a time that is synchronized with the switching cycle. The predetermined time at which the input current is sampled may be midway through the time that the switch is in the “ON” state. This midway time may also be delayed slightly to compensate for delays associated with the switch.

摘要翻译： 公开了用于数字控制开关模式电源的平均输入电流的方法和装置。 在优选实施例中，开关模式电源是DC-DC转换器。 本发明的一个方面涉及一种通过在与开关周期同步的时刻在每个电源开关周期期间对输入电流进行一次数字采样来控制开关模式电源的开关的方法。 输入电流被采样的预定时间可以是开关处于“接通”状态的时间的中间。 这个中途时间也可能稍稍延迟以补偿与开关相关的延迟。