Active damping of filter based line side harmonics for matrix converter as drive converter with direct and space vector modulated control strategies

• Applicant: Professor Dr.-Ing. Wilfried Hofmann
• Subject Area: Electrical Energy Systems, Power Management, Power Electronics, Electrical Machines and Drives
• Term: from 2010 to 2017
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 157988629

In the continuance application the LC-filter based line side system perturbation takes centre stage.The filter capacitor voltage and the line side current show unacceptable harmonic content independent of the control strategy. These harmonics result out of the of resonance behaviour of the line side LC-filter in combination with line side voltage harmonics and current harmonics produced by the matrix converter modulation. By adding active damping methods to different control strategies the quality of the line side current should be improved with respect to national standards. Because of the reduction of passive filter components the efficiency of the matrix converter will be increased. The efficiency of the electrical machine will decrease because of additional losses. Furthermore the matrixconverter will work more stable and a reduction of the space needed by the filter will be possible.

• DFG Programme: Research Grants