Harmonics : Sources , Effects and Control Technique


Power systems are designed to operate at frequencies of 50 or 60 hertz. However certain type of load produce voltage and currents having frequency that are an integer multiple of fundamental frequency. These are called harmonics. The pure sinusoidal wave shape generated by electrical utilities is distorted by the harmonics produced by the increased use of non-linear loads. The harmonics lead to adverse effects like excessive heating and transmission losses. This paper discusses various sources of power harmonics, its impacts and control techniques to minimize harmonics.

Niharika Singh, N.K. Sharma, P. Tiwari

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