公开(公告)号：US09914362B2

公开(公告)日：2018-03-13

申请号：US14139059

申请日：2013-12-23

Applicant: Virginia Tech Intellectual Properties, Inc.

Inventor： Khai Doan The Ngo ,  Hui Wang

IPC: H02J7/00 ,  G05F1/70 ,  H02P23/00 ,  H02P25/00 ,  H02P27/00 ,  B60L11/18 ,  H02M1/14 ,  H02M1/42 ,  H02M7/5387

CPC classification number: B60L11/1803 ,  B60L11/1812 ,  B60L2210/14 ,  B60L2220/54 ,  B60L2240/526 ,  B60L2240/527 ,  B60L2240/529 ,  H02M1/14 ,  H02M1/4225 ,  H02M7/5387 ,  Y02T10/641 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T10/7225 ,  Y02T90/127 ,  Y02T90/14

Abstract: Switches of a switching circuit used to control operation of an electric motor such as in an electrically powered vehicle connect respective windings of the electric motor as a single phase inductor during battery charging. The inductor can then store inherent low frequency, second order ripple power and return that power to a load presented by a battery during battery charging to deliver substantially constant current. Storage of ripple power in the inductor allows the capacitance value, size, weight and cost of a filter capacitor of a power factor correction circuit providing input power to a battery charger to be reduced by an order of magnitude or more. Direction of current flow through the inductor is periodically reversed to avoid magnetizing the motor.

公开(公告)号：US20140306663A1

公开(公告)日：2014-10-16

申请号：US14139059

申请日：2013-12-23

Applicant: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.

Inventor： Khai Doan The Ngo ,  Hui Wang

IPC: B60L11/18

CPC classification number: B60L11/1803 ,  B60L11/1812 ,  B60L2210/14 ,  B60L2220/54 ,  B60L2240/526 ,  B60L2240/527 ,  B60L2240/529 ,  H02M1/14 ,  H02M1/4225 ,  H02M7/5387 ,  Y02T10/641 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T10/7225 ,  Y02T90/127 ,  Y02T90/14

Abstract: Switches of a switching circuit used to control operation of an electric motor such as in an electrically powered vehicle connect respective windings of the electric motor as a single phase inductor during battery charging. The inductor can then store inherent low frequency, second order ripple power and return that power to a load presented by a battery during battery charging to deliver substantially constant current. Storage of ripple power in the inductor allows the capacitance value, size, weight and cost of a filter capacitor of a power factor correction circuit providing input power to a battery charger to be reduced by an order of magnitude or more. Direction of current flow through the inductor is periodically reversed to avoid magnetizing the motor.

Abstract translation: 用于控制诸如电动车辆中的电动机的操作的开关电路的开关在电池充电期间将电动机的各个绕组作为单相电感器连接。 然后，电感器可以存储固有的低频二阶纹波功率，并在电池充电期间将电力返回给由电池呈现的负载，以输送基本上恒定的电流。 在电感器中存储纹波功率允许向电池充电器提供输入功率的功率因数校正电路的滤波电容器的电容值，尺寸，重量和成本降低一个数量级以上。 电流流过电感的方向周期性地反转，以避免电机的磁化。