A step-up bridgeless single phase ac-dc power factor correction (PFC) rectifier based on Cuk topology is proposed for high voltage battery charger application. The proposed topology consists of common input stage and parallel output stages. It utilizes one control signal over the whole line cycle. In addition, the proposed converter exhibits low inrush current and low magnetic emissions as clas...

The devices such as diode and thyristor are generally used in industrial, commercial and residential applications hence need to undergo rectification for their proper functioning and operation. They are connected to the grid comprising of non-linear loads and thus have non-linear input characteristics, which results in production of non-sinusoidal line current. Due to the increasing demand of t...

With the vast development in the usage of Power electronic devices like Rectifiers (nonlinear loads) the current drawn from the line is distorted resulting in a High Total Harmonic Distortion (THD) and Low Power Factor (PF). Hence there is a continuous need for Power factor improvement and reduction of line current harmonics. The most popular topology for Active PFC is a boost converter as it d...

A step-up bridgeless single phase ac-dc power factor correction (PFC) rectifier based on sepic topology is proposed for high voltage battery charger application. The proposed topology consists of common input stage and parallel output stages. It utilizes one control signal over the whole line cycle. In addition, the proposed converter exhibits low inrush current and low magnetic emissions as cl...

1 This work is supported by NASA-STTR grant # NAS10-00005 AbstractA single-stage, ZVT-PWM, power factor correction converter is proposed in this paper. Zero-voltage switching for the main switch and zero-current switching for the auxiliary switch are realized by utilizing the leakage inductance of the output transformer and the capacitance of the switches. As a result, no additional resonant co...

In an electrical Power systems, a load with a low power factor draws more current than a load with a high power factor for the same amount of useful power transferred. Linear loads with low power factor (induction motor) can be corrected with a passive network of capacitors or inductors. The hysteresis current controller is used to track the line current command. Non-linear loads (rectifier) di...

The paper contains analysis of power factor correction circuits that is made in the context of elaboration of uninterruptable power supply system. Various correctors have been estimated analytically, by means of simulation and experimentally. The most significant attention has been paid to the efficiency of the analyzed converters and their compatibility with modular approach to development of ...

The bad small sample performance of unit root tests is well known and depends partly on the existence of nuisance parameters. To deal with this Johansen (2004) presents a small sample correction of the Dickey-Fuller test. The correction factor depends on biased parameter estimates. The purpose of this study is to, through simulation, compare the small sample correction with a bootstrap approach...