Some of the improvements achieved by EVER-POWER drives in energy efficiency, productivity and process control are truly remarkable. For instance:
The savings are worth about $110,000 a year and also have slice the company’s annual carbon footprint by 500 metric tons.
EVER-POWER medium-voltage drive systems allow sugar cane vegetation throughout Central America to be self-sufficient producers of electricity and increase their revenues by as much as $1 million a year by selling surplus power to the local grid.
Pumps operated with adjustable and higher speed electric motors provide numerous benefits such as greater selection of flow and head, higher head from a single stage, valve elimination, and energy conservation. To accomplish these benefits, however, extra care must be taken in selecting the appropriate system of pump, motor, and electronic motor driver for optimum conversation with the procedure system. Successful pump selection requires understanding of the complete anticipated range of heads, flows, and particular gravities. Motor selection requires suitable thermal derating and, sometimes, a coordinating of the motor’s electrical characteristic to the VFD. Despite these extra design considerations, variable speed pumping is becoming well accepted and widespread. In a straightforward manner, a discussion is presented about how to identify the huge benefits that variable acceleration offers and how exactly to select elements for trouble free, reliable operation.
The first stage of a Adjustable Frequency AC Drive, or VFD, may be the Converter. The converter is certainly comprised of six diodes, which act like check valves found in plumbing systems. They enable current to flow in mere one direction; the path proven by the arrow in the diode symbol. For instance, whenever A-phase voltage (voltage is similar to pressure in plumbing systems) is definitely more positive than B or C phase voltages, then that diode will open and allow current to flow. When B-stage becomes more positive than A-phase, then the B-phase diode will open and the A-phase diode will 
We can eliminate the AC ripple on the DC bus with the addition of a capacitor. A capacitor operates in a similar fashion to a reservoir or accumulator in a plumbing program. This capacitor absorbs the ac ripple and delivers a clean dc voltage. The AC ripple on the DC bus is normally significantly less than 3 Volts. Thus, the voltage on the DC bus becomes “approximately” 650VDC. The real voltage will depend on the voltage degree of the AC series feeding the drive, the level of voltage unbalance on the power system, the engine load, the impedance of the power system, and any reactors or harmonic filters on the drive.
The diode bridge converter that converts AC-to-DC, may also be just referred to as a converter. The converter that converts the dc back to ac is also a converter, but to tell apart it from the diode converter, it is generally referred to as an “inverter”.
In fact, drives are an integral part of much larger EVER-POWER power and automation offerings that help customers use electrical energy effectively and increase productivity in energy-intensive industries like cement, metals, mining, oil and gas, power generation, and pulp and paper.