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Abstract
This paper presents a simple design procedure for LC filters used in wide band gap device based adjustable speed drives. Wide band gap devices offer fast turn-on and turn-off times, thus producing high dV/dt into the motor terminals. The high dV/dt can be harmful for the motor windings and bearings and must therefore be reduced. This may be accomplished by a sine LC filter with DC link feedback, which reduces both the differential mode and common mode dV/dt. Wide band gap devices are capable of switching at frequencies much higher than traditional Si based devices. This makes it possible to design the LC filter with a higher cut off frequency and without damping resistors. The selection of inductance and capacitance is chosen based on capacitor voltage ripple and current ripple. The filter adds a base load to the inverter, which increases the inverter losses. It is shown how the modulation index affects the capacitor capacitor and the inverter current.
Originalsprog | Engelsk |
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Titel | Proceedings of the IEEE International Power Electronics and Application Conference and Exposition (IEEE PEAC'14) |
Antal sider | 6 |
Forlag | IEEE Press |
Publikationsdato | nov. 2014 |
Sider | 1291-1296 |
DOI | |
Status | Udgivet - nov. 2014 |
Begivenhed | IEEE International Power Electronics and Application Conference and Exposition (IEEE PEAC'14) - Shanghai, Kina Varighed: 5 nov. 2014 → 8 nov. 2014 |
Konference
Konference | IEEE International Power Electronics and Application Conference and Exposition (IEEE PEAC'14) |
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Land/Område | Kina |
By | Shanghai |
Periode | 05/11/2014 → 08/11/2014 |
Fingeraftryk
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IEPE: Intelligent and Efficient Power Electronics (IEPE)
The Danish National Advanced Technology Foundation
01/04/2012 → 31/03/2017
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