Showing papers by "C.V. Nayar published in 1996"
08 Jan 1996
TL;DR: A prototype current controlled power conditioning system has been developed and is being tested on a weak rural feeder line at Kalbarri, about 600 kilometers north-west of Perth in Western Australia as mentioned in this paper.
Abstract: A prototype current controlled power conditioning system has been developed and is being tested on a weak rural feeder line at Kalbarri, about 600 kilometers north-west of Perth in Western Australia. This system sources 20 kW of power from three photovoltaic arrays with a maximum power point tracking control. In addition, it provides voltage support for the grid at Kalbarri by varying its reactive power in response to the measured voltage at the point of connection. This paper describes the development and testing of the power conditioning system.
34 citations
08 Jan 1996
TL;DR: In this paper, the performance of a solar water pumping system is discussed, which consists of a photovoltaic (PV) array, a permanent magnet (PM) DC motor and a helical rotor pump.
Abstract: The performance of a solar water pumping system is discussed in this paper, The system consists of a photovoltaic (PV) array, a permanent magnet (PM) DC motor and a helical rotor pump. The operation of the PV array is analysed using PSPICE. The efficiency of the system is improved with a maximum power point tracker (MPPT) and a sun-tracker. Simulation and field test results are presented.
34 citations
03 Mar 1996
TL;DR: Ramptime current control is a new robust technique for directly controlling the inductor current in switched power converters as mentioned in this paper, which is largely invariant with respect to circuit parameters and system voltages.
Abstract: Ramptime current control is a new robust technique for directly controlling the inductor current in switched power converters. It is largely invariant with respect to circuit parameters and system voltages. Ramptime is a sliding mode method producing zero average current error (ZACE) in each switching period with a controlled switching frequency band. The converter transient response, ripple current and switching frequency band are discussed. Simulation and experimental results showing negligible low order harmonics are presented for a single phase AC-DC power converter.
19 citations
TL;DR: In this paper, the conditions necessary for the occurrence of quasiperiodicity are shown by solving the system equations using the method of harmonic balance, and it is shown that QP oscillations will occur due to the severity of magnetizing nonlinearity of the transformer core.
9 citations