Based on a single-stage isolated power-factor-corrected power supply (SSIPP or S2IP2) employing a boost powerfactor-correction (PFC) cell, the relationship between the input line voltage and line current of such switching regulators is studied. The conditions for unity power factor are derived. A control scheme to reduce the switch voltage stress while maintaining unity power factor is proposed...

In the present world which is continuously looking towards advancement in technology power is very precious. So it is necessary to find out the causes of power pollution and methods must be adopted to minimize the same. Industries mainly have inductive and nonlinear loads. Thus the overall power factor of industries are very low due to the increased intake of reactive power by the inductive loa...

In distribution systems, sudden change in load draws non-sinusoidal currents and causes the load harmonics, excessive neutral currents creates disturbance and changes in Power factor. Static Synchronous Compensator (STATCOM) is used to provide reactive power to the transmission line. In this paper proposes with Fuzzy Logic Controller (FLC) to tune PI controller gain values under different opera...

The hybrid three-phase rectifiers (HTR) consist of parallel associations two (rectifier 1 and rectifier 2), each one them with a distinct operation, while the sum their input currents forms sinusoidal or multilevel waveform. In general, is GRAETZ (full bridge) (can be combined BOOST converter) 2 DC-DC converter. this HTR contest, paper intended to answer some important questions about those rec...

The AC line input voltage is frequently rectified by single-phase diode rectifiers and filtered using sizable electrolytic capacitors. capacitor draws current in brief pulses, so harmonics distort the current, resulting high losses. Harmonics distortions harm unity power factor efficiency. This article adopts a simple single-stage AC-DC converter with high-power low total harmonic distortion. P...

In this paper a new bridgeless isolated power factor correction (PFC)-based Cuk converter-fed brushless dc (BLDC) motor drive is introduced for power factor correction and reduction in total harmonic distortion of input current. Dc link voltage of the voltage source inverter (VSI) feeding the BLDC motor is varied for speed control. This allows the operation of VSI in fundamental frequency switc...