Abstract
The single-phase power converter topologies evolving of photovoltaic applications are still including passive filters, like the LCLor LLCL-filter. Compared with the LCL-filter, the total inductance of the LLCL-filter can be reduced a lot. However, due to the resonant inductor in series with the bypass capacitor, the differential mode (DM) electromagnetic interference (EMI) noise attenuation of an LLCL-filter-based grid-tied inverter declines. Conventionally, a capacitor was inserted in parallel with the LC resonant circuit branch of the LLCL-filter to suppress the DM EMI noise. In order to achieve a small value of capacitor as well as to minimize the additional reactive power, a novel simple DM EMI suppressor for the LLCL-filter-based system is proposed. The characters of two kinds of DM EMI suppressor are analyzed and compared in detail. Simulations and experiments on a 0.5-kW 110-V/50-Hz single-phase grid-tied inverter prototype are accomplished to confirm the analysis.
| Originalsprog | Engelsk |
|---|---|
| Tidsskrift | I E E E Transactions on Industrial Electronics |
| Vol/bind | 62 |
| Udgave nummer | 7 |
| Sider (fra-til) | 4141 - 4147 |
| Antal sider | 7 |
| ISSN | 0278-0046 |
| DOI | |
| Status | Udgivet - jul. 2015 |