Novel Three-Phase Nine-Level Inverter and Its Control Strategies

In this paper, the authors propose a new three-phase, nine-level inverter with self-balancing of capacitors voltages. The proposed is result serial connection SPUC topology and NPC converter. A single DC source used, each phase made up nine power switches three capacitors. Two control techniques are to maintain voltages at desired values, first which PWM technique ensures in open loop without using any filters or PI regulators, second based on hysteresis offers nearly sinusoidal waveform load current voltage sensors. make use Matlab Simulink environment perform simulation concept. dynamics latter was verified against change.