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Adaptive Harmonic Detection Control of Grid Interfaced Solar Photovoltaic Energy System with Power Quality Improvement

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Abstract

This paper presents a grid interfaced solar photovoltaic (SPV) energy system with a novel adaptive harmonic detection control for power quality improvement at ac mains under balanced as well as unbalanced and distorted supply conditions. The SPV energy system is capable of compensation of linear and nonlinear loads with the objectives of load balancing, harmonics elimination, power factor correction and terminal voltage regulation. The proposed control increases the utilization of PV infrastructure and brings down its effective cost due to its other benefits. The adaptive harmonic detection control algorithm is used to detect the fundamental active power component of load currents which are subsequently used for reference source currents estimation. An instantaneous symmetrical component theory is used to obtain instantaneous positive sequence point of common coupling (PCC) voltages which are used to derive inphase and quadrature phase voltage templates. The proposed grid interfaced PV energy system is modelled and simulated in MATLAB Simulink and its performance is verified under various operating conditions.

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Author information

Authors and Affiliations

  1. Department of Electrical Engineering, IIT, Delhi, India

    B. Singh

  2. Northern Regional Load Despatch Centre, Katwaria Sarai, New Delhi, India

    S. Goel

Authors
  1. B. Singh
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  2. S. Goel
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Corresponding author

Correspondence to S. Goel.

Appendix

Appendix

SPV Data

Short-circuit current (I scn ) = 8.2A,

Open-circuit voltage (V ocn ) = 32.8 V,

MPP current (I mp ) = 7.5A,

MPP voltage (V mp ) = 26.89 V,

Voltage temperature coefficient (K v ) = 82e-3 V/K,

Current temperature coefficient (K i ) = 0.0031 A/K,

Number of cells in series = 54,

Number of panels in series = 18,

Number of panels in parallel = 7.

Supply System Parameters

Supply voltage peak (phase), V sa  = 348 V, V sb  = 310 and V sc  = 328,

Frequency = 50 Hz,

Source inductance = 0.49 mH/phase

Source resistance = 0.0311 Ω/phase

Band-Pass Filter

Lower cutoff frequency = 30 Hz

Upper cutoff frequency = 70 Hz

Ripple Filter

R = 5Ω,

C = 15µF,

K ploss = 200,

K iloss = 10,

K pq  = 5,

K iq  = 0.5.

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Singh, B., Goel, S. Adaptive Harmonic Detection Control of Grid Interfaced Solar Photovoltaic Energy System with Power Quality Improvement. J. Inst. Eng. India Ser. B 96, 37–45 (2015). https://doi.org/10.1007/s40031-014-0125-9

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  • DOI: https://doi.org/10.1007/s40031-014-0125-9

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