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A battery integrated three‐port bidirectional charger/discharger for light electric vehicles with G2V and V2G power flow capability
Author(s) -
Kumar Deepak,
Saxena Anmol Ratna
Publication year - 2021
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.3044
Subject(s) - battery charger , maximum power point tracking , electrical engineering , battery (electricity) , photovoltaic system , voltage , power (physics) , interfacing , converters , engineering , boost converter , capacitor , computer science , inverter , physics , quantum mechanics , computer hardware
Summary In this paper, a non‐isolated battery integrated three‐port bidirectional dc‐dc converter (BIBTPC) is proposed and analyzed for interfacing light electric vehicles (LEVs) with solar photovoltaic (SPV)‐fed low voltage dc distribution system (LVDDS). Depending upon the power generation, the converter can be controlled to operate in grid‐to‐vehicle (G2V) or vehicle‐to‐grid (V2G) arrangement. BIBTPC can implement maximum power point tracking (MPPT), simultaneously regulating the dc bus voltage of LVDDS. It also has an inherent feature of pulse charging and pulse discharging of the battery which improves its charging/discharging rate. The converter operation in all the possible modes is elucidated, and steady‐state analysis is performed to establish the key performance features. The guidelines for the inductor and capacitor design of the converter are also presented. The control strategy to ensure MPPT simultaneously managing the power flow among SPV, LVDDS, and LEV battery is developed and implemented. The theoretical predictions are validated experimentally on the laboratory prototype of the converter. These results are found to be in close agreement with each other.