Frequency Drive and its Know-How

Frequency Drive and its Know-How

What is frequency drive? Variable-frequency drive is a device that helps in saving energy in terms of electronic is various kinds of machines and devices that operate with electrical energy. It works as a controller. Frequency drive actually controls the electrical energy, and this leads to control of AC motors with controlling or reducing rotational speed. Frequency drive known with different names such as AC drives, Inverter drives, adjustable frequency drives, etc. Nowadays, variable frequency drive is a very important aspect of manufacturing industries and different kinds of machines. It is widely used in cranes, hoists, elevators, pumps, etc. Frequency drive is really helpful in saving energy by maintaining frequency in electronic devices.

How Frequency drive works? I said earlier that frequency drive helps save energy and very useful in electronic devices. Now let me tell you that how frequency drives do this. Variable frequency drive uses IGBT in order to control or reduce power. IGBT works like a switch in electronic equipments that ultimately control the voltage or frequency of electronic equipment s output power. Are you still confused? Let me explain you how it functions? Generally, without frequency drive when induction motors draw many times when initially it comes in contact with heavy voltage at the time of starting device. At the time when the load of the device increases the torque drop and rise to pick a speed and then device reaches the full speed with acceleration where as during this process, current remains high. However, with the frequency drive the action is totally opposite. When the frequency drive is used in a motor and when it starts frequency drive asserts very low application voltage and frequency which lead to minimum inflow of current.

Benefits of frequency drive I have already mentioned that frequency drive or AC drive helps in saving energy. However, there are numbers of other benefits and putting forth few for your knowledge. Earlier motors used to be in need of softer required as AC drive controls the frequency and voltage softer starter is no longer required. Using a frequency drive means low maintenance and longer life of devices or electronic equipments. The maintaining and using AC motors also give you rid of choking valves and dampers. It also solves the water hammering problem as it asserts increment of speed gradually and steadily rather suddenly. There are few types of equipment that is not capable of tolerating over torque in such a situation frequency drive helps a lot as it allows to select different level of torque by the user itself.

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