Title :
A switching loss study in SPWM IGBT inverter
Author_Institution :
Sch. of Electr. & Electron, Nanyang Technol. Univ., Singapore
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;
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
DOI :
10.1109/PECON.2008.4762548
