Functions of automatic star delta converter

All motors of higher capacity are provided with star/delta windings. During the initial startup, the motor is connected in star mode to reduce the initial inrush of current. Once the motor achieves the required speed, it switches

What is a variable frequency drive?

In some motor driven systems, the load varies with time. A Large amount of energy can be saved using a variable frequency drive(VFD). VFDs belongs to a group of equipment called adjustable speed drives or variable speed drives.

What is smooth starter ?

Smooth stating by torque control for a gradual acceleration of the drive system thus preventing jerks and extending the life of mechanical components. Reductions in staring current to achieve break-away, and to hold back the current during

Gas turbine cogeneration system

Works on the principal of bray ton cycle of thermodynamics. Capacity ranges between 500KW to 25MW. In bray ton cycle, atmospheric air is compressed and mixed with fuel in a combustion chamber where the combustion occurs. Expansion

What is extraction condensing steam turbine

Steam can be obtained at each stage of the multi-stage turbine. Extracted steam can be used to meet the demand of process consumer at an intermediate pressure and left over to the condenser. At condenser, steam is

Bottoming cycle type of cogeneration

In the bottoming cycle, cogeneration system fuel is burnt mainly to produce useful heat, unlike the previous system. Then rejected heat in this process is recovered by heat recovery boiler and associated turbine generator to generate electrical

Topping cycle

In a topping cycle, utilization of fuel burnt is mainly for the productions of electricity and excess thermal energy is recovered. Heat energy is generated as a byproduct of the cycle, which is used to attain the

What is P.F tariff ?

As its names suggest, in this tariff, the power factor of the consumer load is taken into account while charging the consumer for this electricity use. Low power factor is in an indication of inefficient use of

What is TOD tariff?

Consumption varies throughout the day (and/or season) so usage pattern varies accordingly and hence demand. In certain timing of the day, electricity demand attains its peak. Normally Indian utility experiences morning peak and evening peak. The demand-supply

Energy audit schemes

Big industries and utilities should be mandated to carry out an energy audit as its identifier the areas of losses and measures to reduce. Incentives should be awarded to utilities as well as consumers who are being
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