发明名称 |
Power source inverter for use with a photovoltaic solar panel |
摘要 |
An improved topology is presented for a single phase power source inverter that is designed to minimize double frequency ripple. The inverter circuit includes: a capacitor coupled in parallel across a direct current (DC) voltage source; a bridge circuit having three legs electrically connected in parallel with the voltage source and each other, such that each leg of the bridge circuit being comprised of two switches coupled in series with each other; a low pass filter electrically connected between the bridge circuit and a load; an auxiliary inductor having a first terminal electrically connected to one leg of the bridge circuit and a second terminal electrically connected to another leg of the bridge circuit and the load; and a controller that drives the switches of the bridge circuit in a manner that maintains instantaneous power transfer across the bridge circuit constant. |
申请公布号 |
US9431924(B2) |
申请公布日期 |
2016.08.30 |
申请号 |
US201414259205 |
申请日期 |
2014.04.23 |
申请人 |
Board of Trustees of Michigan State University |
发明人 |
Wang Bingsen |
分类号 |
H02M7/5387;H02M1/15;H02J3/38 |
主分类号 |
H02M7/5387 |
代理机构 |
Harness, Dickey & Pierce, P.L.C. |
代理人 |
Harness, Dickey & Pierce, P.L.C. |
主权项 |
1. An inverter circuit, comprising:
a capacitor coupled in parallel across a power source; a bridge circuit having three legs electrically connected in parallel with the voltage source and each other, each leg of the bridge circuit being comprised of an upper switch coupled in series with a lower switch; a low pass filter electrically connected between an output of the bridge circuit and a load, where the output of the bridge circuit is a node disposed between the two switches of a first leg of the bridge circuit; an auxiliary inductor having a first terminal electrically connected to a second leg of the bridge circuit and a second terminal electrically connected to electrical ground, where the second leg of the bridge circuit differs from the first leg of the bridge circuit; and a controller electrically coupled to the switches of the bridge circuit and operable to drive the switches of the bridge circuit in a manner that maintains instantaneous power transfer across the bridge circuit constant. |
地址 |
East Lansing MI US |