公开(公告)号：US20230223802A1

公开(公告)日：2023-07-13

申请号：US17733483

申请日：2022-04-29

Applicant: Delta Electronics, Inc.

Inventor： Yi-Fan Lin ,  Li-Jiang Lu ,  Chin-Chun Lai ,  Chung-Hung Tang ,  Chun-Lung Chiu

IPC: H02K1/2746 ,  H02K11/33 ,  H02K29/03 ,  H02K11/215

CPC classification number: H02K1/2746 ,  H02K11/33 ,  H02K29/03 ,  H02K11/215 ,  H02K2213/03

Abstract: A motor is provided and driven by two phase. The first and second control signals have a phase difference of 90 degrees and are configured to control the first and second driving units, respectively, and the first and second control signals drive the first and second coil sets, respectively. Each of the first and second poles of the permanent magnet occupies a mechanical angle of 360/2n degrees of the permanent magnet, respectively, and n is 1 or 3. The four sets of the coils of the stator are equally located on the stator, each set of the coil occupies a mechanical angle of 360/2m degrees of the stator, any two sets of the coils adjacent to each other are separated by a mechanical angle of 90−(360/2m) degrees, and m is 3 or 2, wherein m corresponds to 2 when n is 1, m corresponds to 3 when n is 3.

公开(公告)号：US11473584B2

公开(公告)日：2022-10-18

申请号：US16524814

申请日：2019-07-29

Applicant: DELTA ELECTRONICS, INC.

Inventor： Yi-Fan Lin ,  Chung-Hung Tang ,  Cheng-Chieh Liu ,  Chun-Lung Chiu

IPC: F04D19/00 ,  F04D27/00 ,  F04D25/06 ,  F04D17/16 ,  F04D29/66 ,  F04B49/02 ,  F04B49/20 ,  F04B49/06

Abstract: A method for controlling a fan in a fan start-up stage including a first time period and a second time period comprises the following steps of: during the first time period, continuously providing a first driving signal to drive the fan; and during the second time period, continuously providing a second driving signal to drive the fan; wherein, during the first time period the signal value (driving energy) of the first driving signal gradually decreases until being equal to the signal value of the second driving signal, and the signal value of the first driving signal is initially greater than the signal value of the second driving signal. A fan is also disclosed.