DocumentCode :
3533976
Title :
New topology of three phase soft switching inverter using a dual auxiliary circuit
Author :
Galea, Cosmin
Author_Institution :
DANFOSS POWER Electron. A/S, Graasten, Denmark
fYear :
2013
fDate :
2-6 Sept. 2013
Firstpage :
1
Lastpage :
9
Abstract :
In current paper it is described a new topology of a three phase soft switching inverter. The aim is to develop a robust and practical soft switching inverter used in high power and high switching frequency applications. The presented topology is using coupled inductors and gives significant practical advantages when compared with similar topologies. The circuit can provide a mechanism by which the magnetization current passing the coupled inductor is reset. The new topology is also preventing the flow of free-wheeling currents generated in the main inverter into the auxiliary soft switching cell. These two parasitic effects can cause saturation of the magnetic core used for coupling the inductors. This mechanism is described on the steady-state stages and also simulations are provided to confirm the theoretical assumptions. The circuit has been simulated in SABER but also implemented in a prototype, while its performance is evaluated by test.
Keywords :
magnetic cores; magnetisation; performance evaluation; power inductors; switching convertors; SABER simulation; auxiliary soft switching cell; coupled inductor; dual auxiliary circuit; free-wheeling current flow; high switching frequency application; magnetic core saturation; magnetization current; parasitic effect; performance evaluation; three phase soft switching inverter; Inductors; Inverters; Magnetic cores; Magnetic resonance; Saturation magnetization; Soft switching; Topology; Auxiliary Circuit; Diode; Magnetizing Current; Resonant Coupled Inductor; Soft Switching; Switching Losses; Three Phase Inverter; Transformer;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics and Applications (EPE), 2013 15th European Conference on
Conference_Location :
Lille
Type :
conf
DOI :
10.1109/EPE.2013.6631812
Filename :
6631812
Link To Document :
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