公开(公告)号：US10476376B1

公开(公告)日：2019-11-12

申请号：US16223062

申请日：2018-12-17

Applicant: National Chung-Shan Institute of Science and Technology

Inventor： Kun-Feng Chen ,  Jung-Yang Wang ,  Chin-Yu Ho

IPC: H02M1/42 ,  H02M1/14 ,  H02M1/44 ,  H02M3/335

Abstract: A high power factor converter is provided. The high power factor converter includes a rectifier, a reactive power control circuit and a converter circuit. The rectifier is utilized for receiving and converting an input AC voltage in to an input DC voltage. The reactive power control circuit is coupled to the rectifier for performing a reactive power control operation based on the input DC voltage. The converter circuit is coupled to the reactive power control circuit for converting the input DC voltage into an output voltage.

公开(公告)号：US10516342B1

公开(公告)日：2019-12-24

申请号：US16215472

申请日：2018-12-10

Applicant: National Chung-Shan Institute of Science and Technology

Inventor： Kun-Feng Chen ,  Jun-Hao Chen ,  Hsu-Pin Yang

IPC: H02M5/458 ,  H02M1/42 ,  H02J9/06 ,  H02M1/00

Abstract: A three arm rectifier and inverter circuit is provided. The three arm rectifier and inverter circuit includes an input end, a rectifier circuit and an inverter circuit. The input end is utilized for inputting an input voltage and an input current. The rectifier circuit includes a low frequency switching arm. The low frequency switching arm is coupled to the input end for receiving the input voltage and the input current and generating a trigger signal. The inverter circuit includes a full bridge switch. The full bridge switch is coupled to the low frequency switching arm for receiving the trigger signal and adjusting an output voltage.

公开(公告)号：US09847727B1

公开(公告)日：2017-12-19

申请号：US15364133

申请日：2016-11-29

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kun-Feng Chen ,  Hsuang-Chang Chiang ,  Rong-Yang Wang ,  Chin-Yu Ho

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M3/1582 ,  H02M3/33523 ,  H02M3/33584 ,  H02M2001/0058 ,  H02M2001/007

Abstract: A half-bridge resonant bidirectional DC-DC converter circuit comprising a half-bridge buck-boost converter and a resonant DC-DC converter. The half-bridge buck-boost converter is coupled to an external DC power source to achieve a wide input voltage range. The resonant DC-DC converter is coupled to the half-bridge buck-boost converter to act as a later stage circuit of the half-bridge buck-boost converter. The resonant DC-DC converter is used to control the direction of the bidirectional power flow and respond to the half-bridge buck-boost converter under a fixed frequency mode to convert the input of the half-bridge buck-boost converter to an induced current.

公开(公告)号：US10038393B1

公开(公告)日：2018-07-31

申请号：US15801322

申请日：2017-11-02

Applicant: National Chung-Shan Institute of Science and Technology

Inventor： Kun-Feng Chen ,  Woei-Luen Chen ,  Yi-Lun Chen ,  Jung-Yang Wang

IPC: H02M7/537 ,  H02M7/53846 ,  H02S40/32 ,  H02M7/539

CPC classification number: H02M7/538466 ,  H02J3/383 ,  H02M7/5387 ,  H02M7/539 ,  H02S40/32

Abstract: The present invention discloses a single-phase non-isolated inverter, comprising: a first DC-side capacitor, a second DC-side capacitor, a first switch unit, a second switch unit, a third switch unit, a fourth switch unit, a fifth switch unit, a sixth switch unit, a seventh switch unit, and an eighth switch unit. When the single-phase non-isolated inverter is operated at a zero-voltage switching state, the seventh switch unit and the eighth switch unit are switched to short circuit for forming a short-circuit path between the bus lines. Briefly speaking, this novel single-phase non-isolated inverter has reactive power capability. In addition, according to an adjusting signal of a PI controller, micro controller of the single-phase non-isolated inverter is able to properly adjusts the duty cycle of a switch unit driving signal of the fifth switch unit and the sixth switch unit, so as to cancel the capacitor voltage unbalance between two DC-side capacitors.