公开(公告)号：US20030214826A1

公开(公告)日：2003-11-20

申请号：US10360832

申请日：2003-02-07

Applicant: Ballard Power Systems Corporation

Inventor： Lizhi Zhu ,  Xingyi Xu

IPC: H02M007/5387

CPC classification number: B60L11/1868 ,  B60L11/12 ,  B60L2210/10 ,  H02M3/33576 ,  H02M7/5387 ,  H02M7/797 ,  H02M2001/007 ,  H02P2201/07 ,  Y02T10/642 ,  Y02T10/7005 ,  Y02T10/7022 ,  Y02T10/7066 ,  Y02T10/7077 ,  Y02T10/7216

Abstract: Integrated power conversion systems and methods for use in an electric vehicle having an electric motor, a primary high-voltage energy source, and an auxiliary energy source including a traction inverter module operable for converting a DC current generated by the high-voltage energy source into an AC current capable of powering the electric motor, and a DC/DC converter operable to step-down a voltage of the high-voltage energy source or step-up a voltage of the auxiliary energy source, wherein the traction inverter module and the DC/DC converter may share one or more common components, such as a common high-voltage DC bus capacitor, a common DC bus bar, and/or a common high-voltage transistor.

Abstract translation: 用于具有电动机，初级高压能源和辅助能量源的电动车辆的集成电力转换系统和方法，包括牵引逆变器模块，其可操作以将由高压能量源产生的直流电转换成 能够为电动机供电的AC电流;以及DC / DC转换器，其可操作以降低高压能量源的电压或升压辅助能量源的电压，其中牵引逆变器模块和DC / DC转换器可以共享一个或多个公共组件，例如公共高压DC总线电容器，公共DC母线和/或公共高压晶体管。

公开(公告)号：US20030198064A1

公开(公告)日：2003-10-23

申请号：US10345894

申请日：2003-01-15

Applicant: Ballard Power Systems Corporation

Inventor： Lizhi Zhu ,  Xingyi Xu

IPC: H02M003/335

CPC classification number: H02M3/33576

Abstract: A device and method of commutation control for an isolated boost converter provides a unique commutation logic to limit voltage spikes by utilizing switches on the secondary side to minimize a mismatch between current in the inductor and current in the leakage inductance of the transformer when commutation takes places. To minimize this mismatch, the current in the leakage inductance is preset at a certain level that approaches the current in the inductor prior to the commutation, thus significantly reducing the power rating for a clamp circuit and enabling use of a simple passive clamp circuit. In addition, through unique timing of the turn-on of the secondary switches, soft switching conditions are created that eliminate turn-on losses and the reverse recovery problems of free-wheeling diodes.

Abstract translation: 用于隔离升压转换器的换向控制的装置和方法提供了独特的换向逻辑，以通过利用次级侧上的开关来限制电压尖峰，以最小化电感器中的电流与换向时的变压器漏电感中的电流之间的失配 。 为了最小化这种不匹配，漏电感中的电流被预设为在换向之前接近电感器中的电流的一定水平，因此显着地降低了钳位电路的额定功率并且使得能够使用简单的无源钳位电路。 此外，通过二次开关导通的独特定时，产生软切换条件，消除了续流二极管的导通损耗和反向恢复问题。