Abstract
At present, the main issue faced in practical application of active harmonic filter with LCL filter is the protection of AHF due to the resonance condition which is attained unintentionally in the process of removing harmonic and improving power quality. At resonance condition, voltage or current magnification takes place which results in failure of components connected in active harmonic filters. In addition to this, voltage fluctuation occurs for parallel-connected appliances, which results in poor power quality and makes system less reliable. In this work, a noninvasive signal injection method known as harmonic current signal injection method is implemented. The method determines grid impedance in order to avoid resonance conditions in the AHF application. The method uses the existing setup of AHF for measurement of impedance of the grid, thus eliminating the need of additional hardware for determination of impedance. This method is simulated in PSIM and validated under different values of grid impedance.
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Nashikkar, B., Jadeja, R., Patel, V., Trivedi, T., Sipai, U. (2020). Harmonic Current Signal Injection-Based Grid Impedance Measurement Technique for Active Harmonic Filter. In: Deb, D., Dixit, A., Chandra, L. (eds) Renewable Energy and Climate Change. Smart Innovation, Systems and Technologies, vol 161. Springer, Singapore. https://doi.org/10.1007/978-981-32-9578-0_15
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DOI: https://doi.org/10.1007/978-981-32-9578-0_15
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