Open AccessdPLL‐based control of a hybrid wind–solar grid connected inverter in the distribution system
Author(s) -
Mishra Sanchit,
Hussain Ikhlaq,
Pathak Geeta,
Singh Bhim
Publication year - 2018
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2017.0491
Subject(s) - photovoltaic system , control theory (sociology) , harmonics , three phase , computer science , controller (irrigation) , phase locked loop , wind power , inverter , converters , topology (electrical circuits) , electronic engineering , engineering , electrical engineering , voltage , control (management) , artificial intelligence , jitter , agronomy , biology
A novel differentiation phase locked loop (dPLL)‐based control technique is used for control of a three‐phase hybrid wind–solar grid connected inverter (HWS‐GCI) with a capacitor‐supported DC link. The DC link is simultaneously interfaced to a solar photovoltaic and permanent magnet brushless DC wind generator via unidirectional DC–DC converters, in a two‐stage topology, to channelise excess power generation to the grid, thus increasing the energy conversion capability. In addition, the HWS‐GCI is used as a distribution static compensator to enhance the dynamic performance of the system, by the use of a novel harmonics isolation control algorithm based on differentiation and variable coefficient proportional–integral–derivative controller. The algorithm possesses fast dynamic response and preserves the mutual relationship of the three‐phase currents, allowing the accurate detection of load side or source side phase unbalancing. A comparison of the proposed technique with previously known methods is provided to establish the competency of the algorithm. The experimental performance validation under non‐linear load unbalancing and sudden changes in solar insolation and power generated by a wind generator are considered using the real‐time implementation platform.