Abstract
The level of increase in the trend of power conversion technology has made unbelievable dependency on renewable energy sources like solar, Wind etc. Besides the availability of abundant resources, increased efforts to harness the power out of wide variety inputs is phenomenal. Solar PV stands in first row now and for years to come, due to its availability at substantial cheaper cost, less maintenance, and a competitive efficiency over past few decades. Transformerless inverters for grid connected system are found to be beneficial in terms of space, cost, and efficiency constraints of the inverter. Though an inverter with transformer will provides galvanic isolation which can be made possible without transformers by decupling ac and dc side of the inverter at regular intervals by incorporating extra switches on either side of the inverter which will be considered as different topology of inverter, subsequently by applying different switching modulation techniques. The paper considers the task of active power control in grid connected transformerless inverters using Highly Efficient Reliable Inverter Concept (HERIC) inverter to transfer the power from DC side of the inverter to AC side i.e. grid using MATLAB/SIMULINK. It also gives an impact in realizing the control strategy of injecting active power to grid. It emphasizes on filter requirements for grid connected PV system to feed sinusoidal current to grid by reducing unwanted harmonics into grid.
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Gurram, J., Srinivas, G.N., Surendra Babu, N.N.V. (2021). Active Power Control for Single-Phase Grid Connected Transformerless Inverter Photovoltaic System. In: Mekhilef, S., Favorskaya, M., Pandey, R.K., Shaw, R.N. (eds) Innovations in Electrical and Electronic Engineering. Lecture Notes in Electrical Engineering, vol 756. Springer, Singapore. https://doi.org/10.1007/978-981-16-0749-3_11
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