Transformer

did not consider other independent variables like involvement of maintenance staff and external factors like regulation and economic factors in the theoretical framework. The other research was done on Managing reliability risks of transmission transformers with use of condition based maintenance in Power systems done by Hongzhi Ding &Simon Ryder, in 2009 in UK. This study did not

voltage levels in the inverter without involving higher ratings on individual devices can increase the power rating. The specific structure of multilevel voltage source inverters permit them to reach high voltages with low harmonics without using transformers or series connected synchronized switching devices. As number of voltage level increases, the harmonic content of the output voltage waveform starts decreases significantly

A NOVEL SCHEME FOR PRE PAID METERING SYSTEM LIPIKA.T1, MONISHA.P2, RAMYA.B3, SUDHARSANAM.V4, BABU.M5 1,2&3Student, 4&5Assistant Professor Department of Electronics and Communication Engineering R.M.K. College of Engineering and Technology, Puduvoyal, Chennai Abstract- A smart grid is an evolved grid system that manages electricity demand in a sustainable, reliable and economic manner. The existing system has a disadvantage that the power consumption pattern is not known instantly as the amount

ACKNOWLEDGEMENT It gives us an immense pleasure to write an acknowledgement to this project report, a contribution of all people who helped us realize it. We take this opportunity to express our respectful regards to our beloved principal Dr.N.C.Hiremath for permitting us to do this project. We express our deep sense of gratitude and appreciation to our beloved HOD Prof.S.B.Patil for this enthusiastic inspiration and amicable in all phases of our project. With due respect we would like to

INTRODUCTION:  This is a standard circuit which can be used to adjust the brightness of mains lights and the speed of AC motors. It uses a triac, diac and has a radio-frequency interference (RFI) noise suppression circuit built into it as well.  The circuit controls the average power to a load through the triac by phase control. The AC supply is applied to the load for only a controlled fraction of each cycle. The triac is held in an OFF condition for a portion of its cycle then is triggered ON at

APF (ii) Series APF Basic principle of this type of configuration is isolation of harmonics in between nonlinear load and source. The basic configuration is similar with shunt APF, except that interfacing inductor is replaced by an interfacing transformer, where the injection of harmonic voltage occurs. It is otherwise known as a harmonic isolator, which offers zero impedance to the fundamental and infinite impedance to the harmonic frequency components. Fig. 3.5 demonstrates the basic configuration

The Distributed is electrical power generation in small scale (usually 1MW to 50MW) near the load centre using either conventional techniques such as Diesel generators and micro turbines or using non-conventional techniques such as Photo-Voltaic, wind turbines and small hydro power. This modern concept of power system is very advantageous as it reduces the load on the grid, consumers get a reliable power of better quality, and consumers can supply surplus power to the grid and earn a considerable

powerful analysis software package, is a MATLAB/SIMULINK, which has the capability for modeling, simulating and analyzing dynamic systems using SimPowerSystems toolbox, in side Simulink package, different parts of a system such as three phase transformer, three phase load, distributed parameters line, circuit breaker, etc can

2.3 ii) CeBus technology Consumer Electronics Bus (CEBus), a standard proposed by the Electronic Industries Association, is based on the concept of Local Area Networks (LAN’s). CEBus based products consist mainly of a transceiverwhich implements spread spectrum technology along with a controller to run the protocol. The given protocol standards are for radio frequency, twisted pair, power line communication and a number of other networking methods. The CEBus PLDT standard specifies that a binary

L. Hsiu et al. [34] at low output ripple and noise in voltage and current and for this design a model of coupled inductor and transformers on a common core is use that provide Zero-voltage– switched Dual–SEPIC converter with coupled inductor. H. F. Bilgin et al. [35] gave a design criteria, operating feature and characteristic of the buck type PWM rectifier employed in a unity PF dc motor drive. As per this paper single–stage UPF buck –type PWM uses For-low harmonic distortion in Ac supply current