In this paper, an Enhanced Z-source inverter is proposed. Compared to the traditional Z-source inverter, it can obtain high voltage conversion factor with a short shootthrough duration, and can decrease Z-source capacitor voltage stress significantly. In order to identify its inherent character, the transient modeling of continuous conduction mode (CCM) in dc side is presented. Through the deta...

This paper presents the modeling and simulation results of Z-Source Inverter based Static Compensator (STATCOM).The thirty bus system with and without STATCOM are modeled and simulated using the MATLAB software. The present work proposes Z-Source Inverter for the control of reactive power. Z-Source inverter would ensure a constant DC voltage across the DC link during the process of voltage. The...

Electric traction system uses voltage source inverter technology for three phase electric locomotives. This paper proposes Z source inverters to control the speed of locomotive drives. The acceleration region and free running region of operation of locomotive is considered for analysis. The control strategy for Z source inverter used is simple boost control. The speed control method for tractio...

This paper proposes an optimized harmonic reduction pulse width modulation (HRPWM) control strategy for three-phase quasi Z-source inverter (qZSI). In traditional sinusoidal or space vector techniques, the flexibility in adjustment of individual switching angles is not possible and thus, these techniques are optimum choices low frequency operations high/medium power qZSI. proposed technique, ad...

In this study, a compound control strategy for motor side and quasi-Z source is proposed to improve the robustness of permanent magnet synchronous drive system subjected external disturbance. method, complementary sliding mode as feedback controllers are combined with disturbance observer technology feed-forward compensator achieve fast tracking suppression PMSM system. Firstly, signal models i...

This paper proposes a three-level diode clamped active impedance source inverter (AIS-TLI) based on the quasi Z-source (qZSI). Apart from having minimal components and inherent benefits of qZSIs, such as single-stage buck-boost capability, shoot-through (ST) immunity, continuity input current, proposed topology has higher boost capability excellent efficiency. In addition, bridge modulation ind...