Understanding Frequency Inverter
A frequency inverter is an electronic controller, which adjusts the speed of an electric motor by regulating the power being delivered. With using frequency inverter technology, the advantage of both productivity improvements and reduced energy consumption has been widely realized in the past few years.
But thorough understanding this electronic controller, is essential while planning to apply it on the motors.
A thorough understanding on how to match frequency inverter to the driven load is the key to a successful application. When applied properly, frequency inverter (variable speed drive) is the most effective motor controller in the industry. Variable frequency drives (VFDs, variable speed drives, VSDs) are affordable and reliable, and having flexibility of control, plus offering significant electrical savings through reducing electric bills.
Today Frequency Inverters are widely used in a variety of applications for various reasons.
In pump and fan application, variable frequency drives (VFDs, variable speed drives, VSDs) are the most effective energy savers. In most facilities, centrifugal pumps and fans run at one constant speed. Traditionally an automatic valve, or some mechanical means varies fluid flow rates. With a frequency inverter (variable speed drive), you can change motor speeds electronically. By being able to adjust a pump or fan speed to get the desired rate, you can significant reduce energy cost. Thus money is saved through reducing electric bills.
Cost-effective variable frequency drives (frequency inverters) from Shenzhen POWTRAN Technology Co., Ltd.:
Variable frequency drive (VFD, adjustable frequency drive) has been successfully applied to large boiler feedwater pumps in power plants, hot water circulation pumps in commercial buildings, and for waste water treatment plants in our city. Variable frequency drives (VFDs, adjustable frequency drives) provide soft-start capabilities, which will decrease electrical stresses and line voltage sags associated with full voltage motor start-ups, especially when driving high-inertia loads.
Good variable frequency drives (frequency inverters, VFDs, adjustable frequency drives) are reliable, easy to operate, increase the degree of flow control, and reduce the pump noise.
But despite the benefits of this electronic controller, problems are common. Frequency inverters can produce harmonic distortion, which adversely affecting power quality and other electrical machinery. Manufacturers of this electronic controller have developed many solutions to correct this problem. By installing an isolation transformer with a frequency inverter can reduce distortion to an inconsequential level.
