TY - JOUR
T1 - Discrete Stochastic Control for Energy Management With Photovoltaic Electric Vehicle Charging Station
AU - Mateen, Suwaiba
AU - Haque, Ahteshamul
AU - Kurukuru, Varaha Satya Bharath
AU - Khan, Mohammed Ali
PY - 2022/6/1
Y1 - 2022/6/1
N2 - This paper develops an intelligent energy management system for optimal operation of grid connected solar powered electric vehicle (EV) charging station at workplace. The optimal operation is achieved by controlling the power flow between the photovoltaic (PV) system, energy storage unit, EV charging station (EVCS) and the grid. The proposed controller is developed considering the PV availability, grid loading and the EV charging load data. This information is modelled using Markov decision process (MDP) to develop a control strategy that eliminates the conventional problem of immediate recharging of energy storage unit after each EV charging by setting a target state of charge (SOC) level. This maximizes the use of PV power for EV charging and minimizes the impact on the grid. To test the operation of the proposed controller, a charging station powered by a 5 kW PV system with 35 kW energy storage unit connected to grid is developed through numerical simulations and experiment. The experiments were carried out for three different conditions under varying irradiance profile and load profile for multiple days. The results estimated the EV load and PV power and optimized the energy storage unit SOC between 0.3–1. Further, the energy management strategy minimized the impact of energy exchange between the grid and charging station by a factor of 2.
AB - This paper develops an intelligent energy management system for optimal operation of grid connected solar powered electric vehicle (EV) charging station at workplace. The optimal operation is achieved by controlling the power flow between the photovoltaic (PV) system, energy storage unit, EV charging station (EVCS) and the grid. The proposed controller is developed considering the PV availability, grid loading and the EV charging load data. This information is modelled using Markov decision process (MDP) to develop a control strategy that eliminates the conventional problem of immediate recharging of energy storage unit after each EV charging by setting a target state of charge (SOC) level. This maximizes the use of PV power for EV charging and minimizes the impact on the grid. To test the operation of the proposed controller, a charging station powered by a 5 kW PV system with 35 kW energy storage unit connected to grid is developed through numerical simulations and experiment. The experiments were carried out for three different conditions under varying irradiance profile and load profile for multiple days. The results estimated the EV load and PV power and optimized the energy storage unit SOC between 0.3–1. Further, the energy management strategy minimized the impact of energy exchange between the grid and charging station by a factor of 2.
KW - Photovoltaic systems
KW - Energy exchange
KW - Loading
KW - Process control
KW - Charging stations
KW - Markov processes
KW - Numerical simulation
UR - https://ieeexplore.ieee.org/document/9826476/
U2 - 10.24295/CPSSTPEA.2022.00020
DO - 10.24295/CPSSTPEA.2022.00020
M3 - Article
SN - 2475-742X
VL - 7
SP - 216
EP - 225
JO - CPSS Transactions on Power Electronics and Applications
JF - CPSS Transactions on Power Electronics and Applications
IS - 2
M1 - 9826476
ER -