Topology and Capacitor Voltage Balancing Control of a Symmetrical Hybrid Nine-Level Inverter for High Speed Motor Drives - 2017 PROJECT TITLE :Topology and Capacitor Voltage Balancing Control of a Symmetrical Hybrid Nine-Level Inverter for High Speed Motor Drives - 2017ABSTRACT:So as to increase the output voltage levels and reduce the isolated dc sources, a symmetrical hybrid 9-level inverter for high-speed motor drive applications is presented during this paper. Every phase of this inverter is composed of a five-level dc/dc converter cell and an H-bridge cell. The dc/dc converter is operated at high frequency with low-voltage devices and therefore the H-bridge is operated at basic frequency with high-voltage devices. The 3 phases are connected to a standard dc-link and each drives an isolated winding of an open-winding motor. The operating principles and modulation methodology are introduced. A detailed analysis of the common currents through the flying capacitor and neutral purpose of the dc-link is presented and a capacitor voltage balancing technique based on phase-shifted pulse-width modulation is proposed. Simulation and experimental results are presented to demonstrate the feasibility of this topology and management method. Did you like this research project? To get this research project Guidelines, Training and Code... Click Here facebook twitter google+ linkedin stumble pinterest Three-Phase Four-Wire Inverters Based on Cascaded Three-Phase Converters with Four and Three Legs - 2017 Discrete-Time Sliding-Mode Observer for Capacitor Voltage Control in Modular Multilevel Converters - 2017