Variable-speed electric motors lessen electricity usage passing on the savings both for the company and the end consumer. A variable-frequency drive is a system for controlling the rotational speed of an alternating current (AC) electric motor by regulating the frequency of the electrical power supplied to the motor. Electrical power is significantly affected by the usage of these premium quality electric motors. They are also used across many industries.Some of them are used in large building ventilation systems. Speed electric motors on fans can save energy by controlling the volume of air required for the ventilation of the building. Further uses include plastic cement manufacturing, elevator systems, paper making, printing, food packaging, metallurgy, and chemical engineering. Other uses are on pumps, conveyor and machine tool drives, and an infinite number of other applications requiring speed regulation. Generally, it consists of an AC motor, operator interface, as well as a controller.They are normally easy to maintain due to simple structure, overall reliability, and life span. When you do require maintenance you'll want to hire a company that has technicians certified to work on electrical motor systems. You'll also want to choose a company that has a history of maintaining industrial motors and systems.Variable speed electric motors are an asset in this day an age of high energy costs. Although your energy efficiency is dependent upon many factors a variable speed motor should be a key consideration in your systems design. Choosing an inefficient or incorrect type of motor can create enormous inefficiencies. As a result, overall manufacturing productivity and revenue may fall as energy requirements increase. Be sure to consult a company that has a track record of designing energy efficient systems in your industry before choosing a motor.