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|Title:||Precise modelling of switching and conduction losses in cascaded h-bridge multilevel inverters|
|Keywords:||Cascaded H-Bridge Multilevel Inverter (CHB-MLI);Conduction Losses;Selective Harmonic Elimination (SHE);Switching Losses|
|Publisher:||IEEE Computer Society|
|Citation:||Proceedings of the Universities Power Engineering Conference (UPEC 2014), Cluj-Napoca, (2-5 September 2014)|
|Abstract:||Nowadays, voltage source multilevel inverters are being used extensively in industry due to its many advantages, compared to conventional two level inverters, such as higher output voltage at low switching frequency, low voltage stress(dv/dt), lower total harmonic distortion (THD), less electro-magnetic interference (EMI), smaller output filter and higher fundamental output. However, the evaluation of multilevel inverter losses is much more complicated compared to two level inverters. This paper proposes an on-line model for precise calculation of conduction and switching losses for cascaded h-bridge multilevel inverter. The model is simple and efficient and gives clear process of loss calculation. A singlephase 7-level cascaded h-bridge with IGBT's as switching devices has been used as a case study of the proposed model. The inverter has been controlled using selective harmonic elimination in which the switching angles were determined using the Genetic Algorithm (GA). MATLAB-SIMULINK is used for the modelling and simulation.|
|Appears in Collections:||Dept of Electronic and Computer Engineering Research Papers|
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