公开(公告)号：US20190356262A1

公开(公告)日：2019-11-21

申请号：US16409863

申请日：2019-05-12

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chih-Hung HSIAO ,  Chia-Pin WEI ,  Yu-Wei LEE ,  Wei-Shuo TSENG

IPC: H02P27/14 ,  H02P23/00 ,  H02P21/22 ,  H02M7/5387

Abstract: A motor driving circuit including a first and a second driving signal output circuit is configured to selectively output a six-step square wave driving signal from the first driving signal output circuit, or a space-vector driving signal from the second driving signal output circuit to an inverter to drive a motor according to whether an operating power exceeds a power threshold. The first driving signal output circuit is configured to generate the six-step square wave driving signal. The second driving signal output circuit is configured to generate the space-vector driving signal.

公开(公告)号：US20150244294A1

公开(公告)日：2015-08-27

申请号：US14698336

申请日：2015-04-28

Applicant: Delta Electronics, Inc.

Inventor： Chia-Pin WEI ,  Wei-Shuo TSENG

IPC: H02P6/00 ,  F04D25/06 ,  H02P6/16

CPC classification number: H02P6/28 ,  F04D25/06 ,  H02M3/156 ,  H02M3/33507 ,  H02M3/33553 ,  H02M3/33561 ,  H02M2001/0006 ,  H02M2001/009 ,  H02P6/16

Abstract: A DC electric fan receiving a first direct current voltage is provided. The DC electric fan includes a motor, a fan blade, a voltage converting device and a motor controller. The motor is directly driven by the first direct current voltage. The fan blade is connected to the motor and rotated by the driving of the motor. The voltage converting device receives and converts the first direct current voltages to a second direct current voltage, wherein the magnitude of the first direct current voltages is larger than the magnitude of the second direct current voltage. The motor controller receives the second direct current voltages to control a rotation direction of the motor, wherein the motor controller is not powered by the first direct current voltage and the first direct current voltage is a fixed direct current voltage.

Abstract translation: 提供接收第一直流电压的直流电风扇。 直流电风扇包括电动机，风扇叶片，电压转换装置和电动机控制器。 电机由第一直流电压直接驱动。 风扇叶片通过电机的驱动连接到电机并旋转。 电压转换装置接收并将第一直流电压转换为第二直流电压，其中第一直流电压的大小大于第二直流电压的大小。 电动机控制器接收第二直流电压以控制电动机的旋转方向，其中电动机控制器不由第一直流电压供电，并且第一直流电压是固定的直流电压。

公开(公告)号：US20180131294A1

公开(公告)日：2018-05-10

申请号：US15665843

申请日：2017-08-01

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chia-Pin WEI ,  Yu-Wei LEE ,  Wei-Shuo TSENG

IPC: H02P1/04

CPC classification number: H02P1/04 ,  H02P23/20 ,  H02P2205/07 ,  Y02P80/116

Abstract: A motor driving system is configured for driving a motor, which is under an inertial rotation status without being driven, to stably rotate from an original speed to a target speed. The motor driving system includes a sensing unit, a control unit and a driving unit. The sensing unit detects a real rotating status of the motor. The control unit is electrically connected with the sensing unit and provides a gradual acceleration command based on the real rotating status. The driving unit is electrically connected with the control unit and drives the motor to accelerate stably to the target speed according to the gradual acceleration command. In addition, a motor operation recovering method cooperated with the motor driving system is also disclosed.