Input current interharmonics in adjustable speed drives caused by fixed-frequency modulation techniques
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© 2016 IEEE. Adjustable Speed Drives (ASDs) based on double-stage conversion systems may inject interharmonics distortion into the grid, other than the well-known characteristic harmonic components. The problems created by interharmonics make it necessary to find their precise sources, and, to adopt an appropriate strategy for minimizing their effects. This paper investigates the ASD s input current interharmonic sources caused by applying symmetrical regularly sampled fixed-frequency modulation techniques on the inverter. The interharmonics generation process is precisely formulated and comparative results of different fixed-frequency modulation techniques are presented to evaluate the drive input current interharmonic components. The theoretical analysis and simulation studies are validated with experimental results on a 2.2 kW motor drive system.
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Soltani, H.; Loh, P.; Blaabjerg, F.; Zare, Firuz (2015)© 2015 Korean Institute of Power Electronics. Current and voltage source Adjustable - Speed Drives (ASDs) exert distortion currents in the grid which may lead to some interharmonic components other than the characteristic ...
Soltani, H.; Davari, P.; Zare, Firuz; Blaabjerg, F. (2017)IEEE Adjustable Speed Drives (ASDs) based on a three-phase front-end diode rectifier connected to a rear-end inverter may generate interharmonic distortion in the grid. The interharmonic components can create power quality ...
Soltani, H.; Blaabjerg, F.; Zare, Firuz; Loh, P. (2016)© 2013 IEEE. Current and voltage source adjustable-speed drives (ASDs) exert the distortion current into the grid, which may produce some interharmonic components other than the characteristic harmonic components. This ...