Electrical engineering

Physics

Topology (electrical circuits)

Total harmonic distortion

Capacitor

Inverter

Switched capacitor

Modulation (music)

Machine learning

Engineering

Voltage

Artificial intelligence

Acoustics

Control (management)

Electronic engineering

Computer science

Boosting (machine learning)

Control theory (sociology)

Pulse-width modulation

IEEE Transactions on Power Electronics

This letter presents a compact switched capacitor multilevel inverter (CSCMLI) topology with reduced switch count and with self-voltage balancing and boosting ability. The operational mode of the proposed CSCMLI is discussed. A comparative analysis in terms of number of switches and blocking voltages is presented against recent switched capacitor multilevel inverter topologies. Further to enhance the quality of the output voltage, a new level shifted multicarrier pulsewidth modulation (PWM) technique is recommended. This modulation technique produces low THD and high rms voltage. The proposed modulation technique is implemented in the nine-level CSCMLI with single dc source and two capacitors. The simulated and experimental results are verified for a switching frequency of 50 Hz and 2.5 kHz using the proposed PWM control.

Compact Switched Capacitor Multilevel Inverter (CSCMLI) With Self-Voltage Balancing and Boosting Ability