公开(公告)号：US20170170745A1

公开(公告)日：2017-06-15

申请号：US14969102

申请日：2015-12-15

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： CHI-SHENG WU ,  GWO-HUEI YOU ,  HSUANG-CHANG CHIANG ,  TSANG-LI TAI

IPC: H02M7/04 ,  H02M1/42

CPC classification number: H02M1/4225 ,  H02M1/143 ,  H02M1/42 ,  H02M7/04 ,  H02M2001/0022 ,  H02M2001/0025 ,  H02M2003/1566 ,  Y02B70/126

Abstract: A power factor correction conversion device and control method thereof are adapted to send an AC signal to a power factor correction conversion device, convert the AC signal into a DC signal, and perform power factor correction of the DC signal, so as to change a power factor sent to a back-end load, wherein the control method includes a rectification step, a feedback step, a ripple calculating step, a ripple offsetting step, a logical computation step, a pulse width modulation step and a power factor correcting step. Hence, the second-order ripple component in a feedback signal is eliminated to thereby increase the response speed of the power factor correction conversion device and reduce the distortion rate of the current, thus increasing the power factor sent to the back-end load.

公开(公告)号：US20180166977A1

公开(公告)日：2018-06-14

申请号：US15375209

申请日：2016-12-12

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： CHI-SHENG WU ,  GWO-HUEI YOU ,  HSUANG-CHANG CHIANG ,  TSANG-LI TAI

IPC: H02M1/42 ,  H02M3/335 ,  H02M1/44 ,  H02M1/08

CPC classification number: H02M1/42 ,  H02M1/08 ,  H02M1/4208 ,  H02M1/4258 ,  H02M1/44 ,  H02M3/33546 ,  H02M2001/0009 ,  H02M2001/0067 ,  H02M2001/0074 ,  H02M2001/0077

Abstract: A single-phase bridgeless insulated power factor adjustment circuit includes an EMI filter module, low-frequency switching diode module, two switches and two insulated voltage transformation modules. The EMI filter module is coupled to an AC power. The low-frequency switching diode module is coupled to the EMI filter module. The two switches are coupled to the low-frequency switching diode module. The two insulated voltage transformation modules are coupled to one of the two switches. With the low-frequency switching diode module being in first ON state, one of the two switches turns on, and one of the two insulated voltage transformation modules turns on. With the low-frequency switching diode module being in second ON state, the other switch turns on, and the other insulated voltage transformation module turns on. Hence, the circuit is unlikely to fail, but features simple circuitry, incurs low costs, be compact, and achieves high conversion efficiency.

公开(公告)号：US20190181653A1

公开(公告)日：2019-06-13

申请号：US15834102

申请日：2017-12-07

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： CHI-SHENG WU ,  GWO-HUEI YOU ,  HSUANG-CHANG CHIANG ,  TSANG-LI TAI

IPC: H02J7/00

Abstract: A battery cell management and balance circuit comprises multiple battery cell balance circuits, multiple battery cell monitor units, multiple battery module balance circuits and a battery management unit. The battery cell balance circuits connect to battery cells for executing a first charge or discharge command. The battery cell monitor units monitor battery cells for generating battery cell information and the first charge or discharge commands. The battery module balance circuits connect to battery modules for executing second charge or discharge commands. The battery management unit connect to the battery cell monitor units for receiving battery cell information and the battery module balance circuits for direct or indirectly generating the second charge or discharge commands to the battery module balance circuits. A battery system and a battery cell management and balance circuit method is also introduced.

公开(公告)号：US20190176636A1

公开(公告)日：2019-06-13

申请号：US15836951

申请日：2017-12-11

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： CHI-SHENG WU ,  CHIH-HSIEN CHUNG ,  HSUANG-CHANG CHIANG ,  TSANG-LI TAI

IPC: B60L11/18 ,  H02J7/00

Abstract: A battery management and balance circuit comprises multiple battery group balance circuits, multiple battery module balance circuits and a battery management unit. The battery group balance circuits connect to battery groups for executing first charge or discharge command. The battery management unit connect to the battery group balance circuits and the battery module balance circuits for generating the first and second charge or discharge commands to the battery module balance circuits. A battery system and a battery management and balance circuit method is also introduced.