We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
A carrierless pulse-width modulation strategy for three-phase cross-switched multilevel inverter using area equalization method.
- Authors
Kuppapillai, Rajkumar; Sandirasegarane, Thamizharasan; Chittibabu, Krishnakumar
- Abstract
Multilevel inverters (MLI) are preferred for high voltage, medium power applications due to their ability to synthesize the stepped waveform nearly to a sinusoidal voltage. However, it has several issues like, increased number of devices, higher blocking voltage and power loss in higher voltage levels. Additionally, the traditional pulse-width modulation (PWM) applied to MLI is simply an extension of three-level inverter PWM and it becomes cumbersome at higher voltage levels. Therefore, this research article proposes a PWM strategy without carrier and reference signals. This concept equates the area under target fundamental output voltage to that of actual output voltage. In the proposed PWM strategy, a mathematical model is developed to compute the position of the pulse and the width of the pulse using centroid technique and equal area criteria, respectively. The proposed strategy is generalized to any preferred levels with reduced complexity in implementation. The simulation results of the proposed strategy showcase better performance indices. Gate pulses are generated by Xilinx Spartan 3E FPGA controller in experimentation. The experimental investigation of the three-phase five-level inverter prototype gives the results confirming the capabilities of the proposed strategy in real-time applications.
- Subjects
PULSE width modulation; HIGH voltages; PULSE width modulation inverters; VOLTAGE; CENTROID; MATHEMATICAL models
- Publication
Electrical Engineering, 2022, Vol 104, Issue 4, p2173
- ISSN
0948-7921
- Publication type
Article
- DOI
10.1007/s00202-021-01462-8