-------------------------------------------------------------------ABSTRACT---------------------------------------------------------------------In this paper, an asymmetrical pulse-width-modulated (APWM) resonant inverter topology is presented for high frequency ac power distribution systems. The inverter system is comprised of simple power and control circuitry. The detailed analysis shows tha...

Grid connected inverters play a crucial role in generating energy to be fed to the grid. A filter is commonly used to suppress the switching frequency harmonics produced by the inverter, this being passive, and either an L- or LCL-filter. The latter is smaller in size compared to the L-filter. But choosing the optimal values of the LCL-filter is challenging due to resonance, which can affect st...

In this paper, the operation principle of the Z-source inverter is analysed in detail. According to the characteristics of allowed short–shrougt zero state in the Z-source inverter, SPWM control method of the Zsource inverter is obtained by inserting fixed short–shrougt zero state into zero state of SPWM. It is simple and easily implemented in practice. However, in inductive load condition the ...

. This paper proposes the three level diode clamped multilevel inverter fed direct torque control of induction motor. The proposed multilevel inverter has the advantages of fewer harmonic in the output and low torque ripples. The switching table direct torque control scheme is adopted due to the simplicity of the control algorithm. The PI speed controller is used in the outer loop. To demonstra...

This Paper presents the design and implementation of a single phase inverter using IGBT as switch and the study of the output responses. The inverter consists of two parts: the control circuit and the power circuit. The control circuit is responsible for generating the gate pulses to trigger the IGBTs. The pulse width modulation technique has been used to obtain pulse width modulated (PWM) puls...

This paper presents a single-phase five-level photovoltaic (PV) inverter topology for grid-connected PV systems with a Sinusoidal Pulse Width-Modulated (SPWM) control scheme. The photo-voltaic arrays are connected to fivelevel multilevel inverter through the DC-DC boost converter. By implementing maximum power point tracking algorithm are producing more power from PV array. The DC power from th...

Multilevel inverter technology has emerged recently as a very important alternative in the area of high-power medium-voltage energy control. This paper presents modeling and simulation of a single phase simplified eleven-level inverter (SELl). Multilevel inverter offers high power capability. Its performance is highly superior to that of conventional two-level inverter due to reduced harmonic d...

This paper presents a model predictive control (MPC) of a utility interactive (UI) single phase inverter (SPI) for a photovoltaic (PV) system at residential/distribution level. The proposed model uses single-phase phase locked loop (PLL) to synchronize SPI with the grid and performs MPC control in a dq reference frame. SPI model consists of boost converter (BC), maximum power point tracking (MP...

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...

phase stand-alone inverter is caused by unbalanced load and a dead time distorts inverter output voltage more unsymmetrically. When the inverter supplies unbalanced load, three phase output voltages include unbalanced odd harmonics but dq-axis voltages at synchronous reference frame have even harmonics with different magnitude each other. In this paper, a new compensation method is proposed to ...