Most of the power electronic equipments are operated with dc supply. For reliable and stable operation, dc supply should be regulated. The regulation can be performed using buck, boost, Cûk, Sepic, Flyback regulators. Except single phase rectifier with resistive load all other rectifiers input currents are non sinusoidal in nature. This front end current distortion of rectifier converter leads ...

Most of the power electronic equipments are operated with dc supply. For reliable and stable operation, dc supply should be regulated. The regulation can be performed using buck, boost, Cûk, Sepic, Flyback regulators. Except single phase rectifier with resistive load all other rectifiers input currents are non sinusoidal in nature. This front end current distortion of rectifier converter leads ...

In order to reduce the cost, improve the efficiency and simplify the complicated control of existing isolated LED drivers, an improved boundary conduction mode (BCM) Buck ac-dc light emitting diode (LED) driver with extended output voltage and low total harmonic distortion is proposed. With a coupled inductor winding and a stacked output, its output voltage can be elevated to a much higher valu...

This paper presents a comparative analysis between two current control strategies, constant source power and generalized Fryze current, used in Active Power Filter (APF) applications having three different modulation methods. The Hysteresis Band (HB) and first-order Delta-Sigma Modulation (DSM) as well as the second-order DSM is applied. The power section of the active power filter is viewed as...

The output voltage of a Multilevel Inverter (MLI) can be controlled using various low and high frequency modulation strategy. Apart from meeting the load demand, strategy also tries to reduce harmonics present in waveform. In this paper, novel strategy, Variable Structure Nearest Level Modulation (VSNLM) has been proposed with objective Total Harmonic Distortion (THD) thus giving better quality...

Direct torque control (DTC) is a method applied in induction motor (IM) drives to the speed and of IM accurately independently without feedback signal. However, fast fourier transform (FFT) analysis, total harmonic distortion (THD) high DTC with conventional inverter (CI). Therefore, purpose this study minimize THD affecting drive’s performance. A drive multilevel (MLI) proposed reduce preserve...

This paper proposes a new control strategy for single-phase voltage source inverters that does not rely on switching based Pulse Width Modulation. The technique is similar to conventional current hysteresis control, but instead of the output current, low-pass-filtered inverter utilised as feedback signal. Nevertheless, instants are determined by predefined band, rather low-cost Complex Programm...

As wind, solar and other clean and green energy sources gain popularity worldwide, engineers are seeking ways to make renewable energy systems more affordable and to integrate them with existing ac power grids. In the present paper an attempt has been made for integrating the PV arrays to the smart nano grid using an artificial intelligent (AI) based solar powered cascade multilevel inverter. T...