<span lang="EN-US">This paper deals with the voltage regulation of DC micro grid system using photovoltaic and battery coupled single-ended primary-inductor converter (SEPIC) converter. SEPIC is a DC-to-DC boost converter, it can produce non pulsating current less ripples when compared to buck converters. Non demanding condition required in maximum power point tracking (MPPT) applications...

Power factor correction (PFC) can be achieved by a single-ended primary inductor converter (SEPIC) operating in boundary conduction mode (BCM) with conventional constant on-time (COT) control, but it is challenging to achieve low total harmonic distortion (THD) and high-power (PF), particularly at high input voltage. A variable (VOT) control strategy for BCM SEPIC PFC without voltage feedforwar...

The paper presents the full-order small-signal models of some basic PWM converters (Cuk, Sepic and Zeta) with discontinuous inductor current mode (DCM). The derivation procedure is based on the small-signal PWM switch model in DCM and converter topologies derived from their original topologies. The small-signal characteristics of these converters are presented in symbolic forms. Such models can...

Light emitting diodes (LEDs) are current driven devices. So, it is essential to maintain the stability of LED voltage and current. Variation temperature may cause instabilities bifurcations in driver. Driving LEDs from an offline power source faces design challenges like have low harmonics input current, achieve high factor, efficiency constant ensure long lifetime. This paper proposes techniqu...