Abstract
This paper deals with a grid-interfaced solar photovoltaic (SPV) energy conversion system for three-phase four-wire (3P4W) distribution system. The solar energy conversion system (SECS) is a multifunctional as it not only feeds SPV energy into the grid but also serves the purpose of grid current balancing, reactive power compensation, harmonic mitigation, and neutral current elimination. In a two-stage SPV system, the first stage is a boost converter, controlled with incremental conductance (InC) maximum power point tracking (MPPT) algorithm, and a second stage is a four-leg voltage source converter (VSC). A simple frequency shifter-based control is proposed for the control of VSC. A proportional integral (PI) controller along with feedforward term for SPV power is used for fast dynamic response. Simulations are carried out in MATLAB along with Simulink and Sim Power System toolboxes, and detailed simulation results are presented to demonstrate its required multifunctions.
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Authors are very thankful to Department of Science and Technology (DST), Govt. of India, for funding this project under Grant Number RP02583.
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Appendix
Appendix
SPV Data: panel short-circuit current (I scn) = 8.2 A, panel open-circuit voltage (V ocn) = 32.8 V, panel current at MPP (I mpp at 1,000 W/m2) = 7.59 A, panel voltage at MPP (V mpp at 1,000 W/m2) = 27.89 V, voltage temperature coefficient (K v ) = −82e−3 V/K, current temperature coefficient (K i ) = 0.0031 A/K, number of series cell in each panel = 54, number of panels in series = 21, and number of panels in parallel = 6. Supply system parameters: supply voltage rms line to line 415 V, frequency = 50 Hz, grid source inductance = 3 mH/phase, grid source resistance = 0.312 Ω/phase, ripple filter R = 5 Ω, C = 5 µF, K ploss = 1, K iloss = 0.1.
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Jain, C., Singh, B. (2015). A Frequency Shifter-Based Simple Control for Solar PV Grid-Interfaced System. In: Vijay, V., Yadav, S., Adhikari, B., Seshadri, H., Fulwani, D. (eds) Systems Thinking Approach for Social Problems. Lecture Notes in Electrical Engineering, vol 327. Springer, New Delhi. https://doi.org/10.1007/978-81-322-2141-8_31
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DOI: https://doi.org/10.1007/978-81-322-2141-8_31
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