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At TMEIC, our focus is on the customer, working to provide

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success every project, every time.

Variable Frequency Drives in Electric Power Plants

Every step of the way, from the fuel to the grid, variable

frequency drives (VFDs) are used to smoothly start large

motors and continuously adjust the speed as required by

the process. Induction and synchronous motors driving

boiler feed pumps, forced draft fans, induced draft fans,

service water pumps, and conveyors use VFDs to provide

high power, accurate speed control, and effi cient fl ow

control with signifi cant energy savings.

Controlling fan fl ow by adjusting speed avoids wasting

energy in fl ow control vanes, dampers, and louvers.

When large fl ows must be controlled and motor energy

consumption is signifi cant, varying the motor speed is

the answer.  With large machines, the electrical power

savings can amount to hundreds of thousands of dollars

per year.  In addition, the drives smoothly start the motors,

protecting them against starting inrush currents, thus

avoiding thermal stress and extending motor life.