datasheets.com EBN.com EDN.com EETimes.com Embedded.com PlanetAnalog.com TechOnline.com  
Events
UBM Tech
UBM Tech
Welcome Guest Log In | Register | Benefits

The Zero-Voltage-Switching Parallel-Resonant DC Link (PRDCL) Inverter with Minimized Conduction Loss

Authored on: Jul 28, 2005 by In-Hwan Oh

Technical Paper

0 0
More InfoLess Info
This paper presents a Parallel-Resonant DC Link (PRDCL) circuit for soft switching main power devices with a single auxiliary power device for low conduction loss in single or three-phase inverter and converter applications. The proposed resonant network with one auxiliary power device is activated whenever it is needed to change the status of power devices connected to a DC link. The proposed resonant network is designed to force the DC link voltage to drop to zero before any power devices in the DC link are turned on. The auxiliary switch in the proposed resonant network is also turned on in a Zero-Voltage-Switching (ZVS) condition. Therefore, the switching losses caused in all power devices in a full-bridge converter and resonant circuit can be effectively eliminated. In addition, there is no conduction loss in the auxiliary power device because the resonant circuit is not activated if there is no status change in the power devices connected in the DC link. Furthermore, the resonant swing voltage in the DC link is well restricted within a predefined voltage level so that the required voltage rating of all power devices in the DC link is nicely constrained. The detailed modes of operation and experimental results are provided to verify the operation.

0 comments
write a comment

Please Login

You will be redirected to the login page

×

Please Login

You will be redirected to the login page

×

Please Login

You will be redirected to the login page