A few of the improvements attained 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 enable sugar cane plant life throughout Central America to become self-sufficient producers of electricity and enhance their revenues by as much as $1 million a season by selling surplus capacity to the local grid.
Pumps operated with adjustable and higher speed electric motors provide numerous benefits such as for example greater selection of flow and mind, higher head from an individual stage, valve elimination, and energy conservation. To accomplish these benefits, nevertheless, extra care must be taken in choosing the correct system of pump, electric motor, and electronic engine driver for optimum interaction with the process system. Successful pump selection requires knowledge of the full anticipated range of heads, flows, and specific gravities. Motor selection requires suitable thermal derating and, sometimes, a complementing of the motor’s electrical characteristic to the VFD. Despite these extra design considerations, variable rate pumping is becoming well recognized and widespread. In a simple manner, a debate is presented about how to identify the benefits that variable velocity offers and how Variable Speed Electric Motor exactly to select components for trouble free, reliable operation.
The first stage of a Adjustable Frequency AC Drive, or VFD, may be the Converter. The converter is comprised of six diodes, which are similar to check valves found in plumbing systems. They allow current to stream in mere one direction; the direction shown by the arrow in the diode symbol. For example, whenever A-phase voltage (voltage is similar to pressure in plumbing systems) can be more positive than B or C phase voltages, then that diode will open and invite current to movement. When B-phase becomes more positive than A-phase, then your 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. Therefore, we obtain six current “pulses” as each diode opens and closes.
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 provides 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 turns into “approximately” 650VDC. The real voltage depends on the voltage degree of the AC range 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, is sometimes just known as a converter. The converter that converts the dc back again to ac can be a converter, but to tell apart it from the diode converter, it is usually referred to as an “inverter”.

Actually, 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.