DC bus current harmonics of a three-phase PWM inverter with the zero sequence injection

Author

Haghbin, Saeid ; Thiringer, Torbjorn

Author_Institution

Div. of Electr. Power Eng., Chalmers Univ. of Technol., Gothenburg, Sweden

fYear

2014

fDate

15-18 June 2014

Firstpage

1

Lastpage

6

Abstract

Power electronic converters connected to a dc bus are sources of undesirable harmonics towards the dc side due to an inherent high-frequency switching used for the power processing. Three-phase inverters are widely used in many applications like motor drives and active rectifiers. With a SPWM control the dc bus voltage is not fully utilized, so a zero sequence injection method is commonly used to increase the maximum fundamental voltage output. The inverter dc side current harmonics are investigated for a three-phase SPWM inverter with and without zero sequence injection. The results show that the injection of the third harmonic and Min/Max zero sequence will not increase the dc side harmonics. The RMS value of the inverter dc side current is increased less than 1% when the zero sequence is injected.

Keywords

PWM invertors; PWM power convertors; electric current control; minimax techniques; power conversion harmonics; power electronics; switching convertors; voltage control; DC bus current harmonics; DC bus voltage; SPWM control; high-frequency switching; min-max zero sequence; power electronic converter; third harmonic injection; three-phase SPWM inverter; zero sequence injection method; Harmonic analysis; Integrated circuits; Inverters; Power system harmonics; Pulse width modulation; Reactive power; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Transportation Electrification Conference and Expo (ITEC), 2014 IEEE

Conference_Location

Dearborn, MI

Type

conf

DOI

10.1109/ITEC.2014.6861858

Filename

6861858