Active Harmonic Compensation in Industrial Power Converters Using Real-Time Digital Control Algorithms

Abstract

Industrial converters of power comprehensively, industrial converters of power are applicable in modern industrial systems, motor drives, as well as power electronic applications because of their high efficiency and controllability. Nevertheless converter switching behaviour or nonlinear loads bring important harmonic distortions in the power system. These harmonics worsen the quality of power, augment losses in the system and can result in overheating and failure of electrical equipment. The traditional harmonic mitigation methods like passive philtres are usually limited to factors such as fixed tuning, large size and low adaptability to changing conditions of operation. This is because the paper suggests an active harmonic compensation method of industrial power converters with real-time digital control algorithms. The cell proposed is based on digital signal processing methods where the harmonic signals in converter currents are identified and compensating signals are produced. A harmonic generation mathematical model is constructed and a real time control algorithm to reduce the computation of compensation currents is made using pulse width modulation control. Experiments in the field of simulation are conducted with the aim of measuring the effectiveness of the proposed system in the nonlinear load conditions. Findings indicate that total harmonic distortion is greatly minimised and the quality of current waveform is also enhanced by the digital control algorithm. The suggested strategy has been found to be faster in response and even has better power quality as compared to the traditional harmonic mitigation strategies, which is why it is applicable to contemporary industrial power conversion system.