Modified Space Vector Modulations (MSVMs) that reduce the variations of common mode voltage for decreasing common mode currents, are a low cost interesting approach. Unfortunately the lack of full utilization of the DC bus voltage is a severe drawback that can limit the exploitation of suck modulation techniques, unless special overmodulation methods are adopted. In this paper, some solutions are presented that make a trade-off between the DC bus voltage exploitation and common mode currents reduction and make MSVMs appealing to most electrical drives on the market. Furthermore, the influence of dead-time in common mode voltage generation is considered thus modifying the switching patterns according to the sign of the load currents. Experimental results are presented in order to confirm the feasibility of the proposed approach.
|Titolo:||An Improved Space-Vector Modulation Technique for Common Mode Currents Reduction|
|Autori interni:||CACCIATO, MARIO|
|Data di pubblicazione:||2013|
|Rivista:||IET POWER ELECTRONICS|
|Appare nelle tipologie:||1.1 Articolo in rivista|