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Impact of Line Current Harmonics on the DC Bus Quality of a Three-Phase PWM Inverter

Saeid Haghbin (Institutionen för energi och miljö, Elteknik) ; Torbjörn Thiringer (Institutionen för energi och miljö, Elteknik)
International Journal of Electrical Energy (IJOEE) (2301-3656). Vol. 2 (2014), p. 184-188.
[Artikel, refereegranskad vetenskaplig]

Three-Phase PWM inverters are widely used in many applications. The dc bus of a three-phase PWM inverter is subject of harmonics due to the inherent PWM switching operation that may impose severe consequences to the system. The impact of 5th and 7th harmonic components on the dc bus ripple is investigated in this paper. The analytical formulation and simulation method have been used to quantify the impact of these harmonics on the dc bus quality. The results show that there is a low frequency component with an order of 6 (6th harmonic) on the inverter dc side current which is explained and discussed here.

Nyckelord: three-phase PWM inverter, dc bus harmonics, line harmonics, high-frequency model, frequency spectrum



Denna post skapades 2014-05-27. Senast ändrad 2016-09-26.
CPL Pubid: 198603

 

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Institutioner (Chalmers)

Institutionen för energi och miljö, Elteknik

Ämnesområden

Elkraftteknik

Chalmers infrastruktur