Title :
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
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;
Conference_Titel :
Power Engineering Conference, 2003. PECon 2003. Proceedings. National
Print_ISBN :
0-7803-8208-0
DOI :
10.1109/PECON.2003.1437423
