The three phase inverter is connected to star connected high crest factor load. So, high voltage and current harmonics are produced at the inverter output. Control is based on d-q theory. My limitation is the use of physical components for reducing harmonics should be avoided i.e, control should be software based. If anyone knows, quote the solution.
Hi friend,
Space Vector Modulation(SVM) is one of the preferred real-time modulation techniques and widely used for digital control of three phase inverters. Using of general techniques of SV-PWM in 3-phase inverter eliminates the low order voltage/current harmonics, without using filters. In according your request (My limitation is the use of physical components for reducing harmonics should be avoided i.e, control should be software based), I propose : "Higj Power Converters and AC Drives" by Bin Wo, IEEE Press
Hi friend
usually LC filters will be used at the output side of the inverter for damping the harmonics , but if you dont need any physical componenets means i suggest you to think about some advanced control theory concepts such as robust controllers. that may help you think. all the best
I heard something like, Harmonic compensation by software control Wherein compensation for each harmonics (eg. 5th harmonic is separated from fundamental by running with 5w(5*2pi*f)) and then integrating to get a error value. Finally it is summed up with fundamental. Does it really work for nonlinear/high crest factor load??? If so, please clear on it.
Hi friend,
Space Vector Modulation(SVM) is one of the preferred real-time modulation techniques and widely used for digital control of three phase inverters. Using of general techniques of SV-PWM in 3-phase inverter eliminates the low order voltage/current harmonics, without using filters. In according your request (My limitation is the use of physical components for reducing harmonics should be avoided i.e, control should be software based), I propose : "Higj Power Converters and AC Drives" by Bin Wo, IEEE Press
@Qamil Kabashi: Thanks for the info. Right now, I'm using SPWM technique. I'll work on it.
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