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Variable Frequency Drives
The Variable Frequency Drives are noted as the exclusive types of motor controller which drive an electric motor by changing the frequency as well as voltage delivered to the electric motor. These are used in electro-mechanical drive systems so as to control AC motor speed as well as torque by varying motor input occurrence and voltage. These are employed in applications extending from small appliances to large compressors. These Variable Frequency Drives can save electrical energy more efficiently, when are employed for centrifugal load services. These offer many protections like phase, under as well as over voltage protections.