A switching loss study in SPWM IGBT inverter

Author

Maswood, Ali I.

Author_Institution

Sch. of Electr. & Electron, Nanyang Technol. Univ., Singapore

fYear

2008

fDate

1-3 Dec. 2008

Firstpage

609

Lastpage

613

Abstract

This work discusses an exact mathematical approach of calculating the IGBT turn-on, turn-off and on-state energy losses. Instantaneous voltage and current values are studied, linearized and employed to formulate the equations needed to calculate the IGBT switching loss. The inverter employs a switching pattern commonly known as sinusoidal PWM (SPWM). With this popular switching pattern, switching losses are derived for a common 3-phase inverter. Waveforms describing each switching states are developed. Mathematical equations describing the switching waveforms are formulated. The net switching loss is compared with that of the inverter to make sense of the process of loss in an inverter.

Keywords

PWM power convertors; insulated gate bipolar transistors; mathematical analysis; switching convertors; 3-phase inverter; SPWM IGBT inverter; instantaneous current values; instantaneous voltage; mathematical equations; on-state energy losses; switching loss study; switching waveforms; turn-off energy losses; turn-on energy losses; Circuit testing; Energy loss; Equations; Frequency; Insulated gate bipolar transistors; Pulse width modulation; Pulse width modulation inverters; SPICE; Switching loss; Voltage; High Frequency; High Power; IGBT; Loss Calculation; SPWM;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Conference, 2008. PECon 2008. IEEE 2nd International

Conference_Location

Johor Bahru

Print_ISBN

978-1-4244-2404-7

Electronic_ISBN

978-1-4244-2405-4

Type

conf

DOI

10.1109/PECON.2008.4762548

Filename

4762548