Some of the improvements achieved by EVER-POWER drives in energy effectiveness, productivity and process control are truly remarkable. For instance:
The savings are worth about $110,000 a year and also have cut the company’s annual carbon footprint by 500 metric tons.
EVER-POWER medium-voltage 
drive systems allow sugar cane plants throughout Central America to become self-sufficient producers of electricity and boost their revenues by as much as $1 million a yr by selling surplus power to the local grid.
Pumps operated with adjustable and higher speed electrical motors provide numerous benefits such as greater selection of flow and head, higher head from a single stage, valve elimination, and energy saving. To accomplish these benefits, however, extra care should be taken in selecting the appropriate system of pump, engine, and electronic engine driver for optimum interaction with the procedure system. Successful pump selection requires understanding of the full anticipated range of heads, flows, and specific gravities. Motor selection requires suitable Variable Speed Electric Motor thermal derating and, sometimes, a complementing of the motor’s electrical feature to the VFD. Despite these extra design factors, variable acceleration pumping is now well recognized and widespread. In a simple manner, a dialogue is presented on how to identify the huge benefits that variable quickness offers and how exactly to select elements for trouble free, reliable operation.
The first stage of a Adjustable Frequency AC Drive, or VFD, is the Converter. The converter is made up of six diodes, which act like check valves used in plumbing systems. They enable current to stream in only one direction; the direction proven by the arrow in the diode symbol. For instance, whenever A-stage voltage (voltage is similar to pressure in plumbing systems) is certainly more positive than B or C phase voltages, then that diode will open up and invite current to stream. When B-stage turns into more positive than A-phase, then the B-phase diode will open up and the A-stage diode will close. The same holds true for the 3 diodes on the negative side of the bus. Thus, we obtain six current “pulses” as each diode opens and closes.
We can eliminate the AC ripple on the DC bus by adding a capacitor. A capacitor operates in a similar fashion to a reservoir or accumulator in a plumbing system. This capacitor absorbs the ac ripple and provides a smooth dc voltage. The AC ripple on the DC bus is typically less than 3 Volts. Therefore, the voltage on the DC bus turns into “around” 650VDC. The actual voltage will depend on the voltage degree of the AC collection feeding the drive, the level of voltage unbalance on the energy 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, is sometimes just referred to as a converter. The converter that converts the dc back to ac can be a converter, but to tell apart it from the diode converter, it is normally known as an “inverter”.
In fact, drives are a fundamental element of much bigger EVER-POWER power and automation offerings that help customers use electricity effectively and increase productivity in energy-intensive industries like cement, metals, mining, oil and gas, power generation, and pulp and paper.