Somnath Maity

Learn More
SUMMARY We propose a method of estimating the fast-scale stability margin of dc–dc converters based on Filippov's theory—originally developed for mechanical systems with impacts and stick-slip motion. In this method one calculates the state transition matrix over a complete clock cycle, and the eigenvalues of this matrix indicate the stability margin.(More)
— Nonlinear phenomena in closed-loop pulsewidth modulation (PWM) dc/dc converters have been reported recently. In this paper, we investigate experimentally these phenomena in a voltage-mode controlled buck converter operating in continuous-conduction mode. In particular, the complex behavior of a voltage feedback buck converter is studied for wide variation(More)
This paper presents modeling and control of a standalone photovoltaic (PV) system in which a battery is used as a backup source for power management between the source and the load. Lead-acid battery is commonly used in high power PV applications due to its low cost and availability in large size. The modeling of PV system and lead-acid battery by using the(More)
Maintaining good voltage regulation and achieving fast dynamic response under sudden load fluctuation are extremely important in distributed generation (DG) as well as uninterrupted power supply (UPS) systems. This paper presents a fixed frequency hysteresis controller, which is implemented on the basis of sliding mode control (SMC) technique and fixed(More)
  • 1