interharmonics estimation using hybrid multi sine cosine algorithm

The existence of nonlinear loads and switching converters for wind and solar energy systems create distorted sinusoidal waveforms in power systems. the distorted signals are comprised of harmonic and inter harmonic frequency sinusoidal components that create disturbances like flicker, overheating of equipment, electrical losses, control system and digital meter faults, weakening of electrical appliances and electromagnetic interferences with other apparatus. accurate measurement of the inter harmonic distortion is significant to determine the quality of the power delivered. a novel method presented in this paper has been developed based on the hybridization of the sine wave correlation technique and multi sine-cosine algorithm (swc-msca) for the estimation of inter harmonics. the suggested algorithm is validated with a standard power system test signal and compared with the other on similar competent algorithms given literature. the proposed estimator outperforms pertaining to exactness and computing effort. the suggested estimator is also employed for the prediction of inter harmonics on a grid-tied single-phase pv system.