公开(公告)号：US09853572B2

公开(公告)日：2017-12-26

申请号：US14652309

申请日：2013-11-28

Applicant: Inmotion Technologies AB

Inventor： Ulf Bengt Ingemar Karlsson

IPC: H02M3/335 ,  H02M7/5387 ,  H02M1/34 ,  H02M7/493

CPC classification number: H02M7/5387 ,  H02M7/493 ,  H02M2001/342 ,  Y02B70/1491

Abstract: A bridge leg switching a DC voltage to produce an AC voltage at its output terminal for supply to an inductive load. The bridge leg has first, second, third, and fourth switch assemblies, and at least a first inductive element. The first and second switch assemblies are serially connected between the bridge leg input terminals, the bridge leg output being formed at a point of interconnection of the first and second switch assemblies. The third and fourth switch assemblies are serially connected between the bridge leg input terminals, the inductive element being connected between a point of interconnection of the third and fourth switch assemblies and the bridge leg output. The third and fourth switch assemblies are controlled such that reverse current through either of the first or second switch assembly is reduced compared to bridge leg output current prior to the moment the bridge leg output is switched.

公开(公告)号：US20150326145A1

公开(公告)日：2015-11-12

申请号：US14652309

申请日：2013-11-28

Applicant: INMOTION TECHNOLOGIES AB

Inventor： Ulf Bengt Ingemar Karlsson

IPC: H02M7/5387

CPC classification number: H02M7/5387 ,  H02M7/493 ,  H02M2001/342 ,  Y02B70/1491

Abstract: A bridge leg switching a DC voltage to produce an AC voltage at its output terminal for supply to an inductive load. The bridge leg has first, second, third, and fourth switch assemblies, and at least a first inductive element. The first and second switch assemblies are serially connected between the bridge leg input terminals, the bridge leg output being formed at a point of interconnection of the first and second switch assemblies. The third and fourth switch assemblies are serially connected between the bridge leg input terminals, the inductive element being connected between a point of interconnection of the third and fourth switch assemblies and the bridge leg output. The third and fourth switch assemblies are controlled such that reverse current through either of the first or second switch assembly is reduced compared to bridge leg output current prior to the moment the bridge leg output is switched.

Abstract translation: 桥臂切换直流电压以在其输出端产生交流电压，以供给感性负载。 桥脚具有第一，第二，第三和第四开关组件以及至少第一电感元件。 第一和第二开关组件串联连接在桥脚输入端之间，桥脚输出形成在第一和第二开关组件互连点处。 第三和第四开关组件串联连接在桥脚输入端之间，感应元件连接在第三和第四开关组件的互连点与桥脚输出之间。 控制第三和第四开关组件，使得通过第一或第二开关组件中的任何一个的反向电流相比于在桥臂输出被切换之前的桥接脚输出电流减小。