An alternative PWM scheme for multilevel voltage source inverter

Author

Aziz, Joseph ; Salam, Z.

Author_Institution

Fac. of Electr. Eng., Univ. Teknologi Malaysia, Johor, Malaysia

fYear

2003

fDate

15-16 Dec. 2003

Firstpage

83

Lastpage

87

Abstract

This work proposes an alternative PWM scheme for cascaded multilevel inverter. The scheme is based on symmetric regular sampled unipolar PWM, with multiple modulating waveforms and a single carrier. Mathematical equations that define the PWM switching instants are derived and implemented digitally using a low-cost microcontroller. A five-level cascaded multilevel inverter test-rig is built to prove viability of the proposed algorithm.

Keywords

PWM invertors; cascade systems; mathematical analysis; microcontrollers; power conversion harmonics; renewable energy sources; switching convertors; PWM scheme; PWM switching; cascaded multilevel inverter; harmonics; low-cost microcontroller; mathematical equations; modulating waveforms; modulation strategies; multilevel voltage source inverter; renewable energy systems; single carrier; symmetric regular sampled unipolar PWM; test-rigs; Equations; Frequency; Microcontrollers; Pulse width modulation; Pulse width modulation inverters; Renewable energy resources; Sampling methods; Testing; Topology; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Conference, 2003. PECon 2003. Proceedings. National

Print_ISBN

0-7803-8208-0

Type

conf

DOI

10.1109/PECON.2003.1437423

Filename

1437423