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.