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1. DESIGN AND OPTIMIZATION OF
GRID-CONNECTED SOLAR-WIND
HYBRID SYSTEM WITH ELECTRIC
VEHICLE CHARGING STATION

2. ABSTRACT
• Recently, renewable power generation and electric vehicles (EVs) have
been attracting more and more attention in smart grid.
• This paper presents a grid-connected solar-wind hybrid system to
supply the electrical load demand of a small shopping complex located
in a university campus in India.
• The proposed converter operates an EV charging station is
incorporated in the system. Economic analysis is performed for the
proposed setup to satisfy the charging demand of EVs as well as the
electrical load demand of the shopping complex.
• The proposed system may be helpful in reducing the reliance on the
over-burdened grid, particularly in developing countries.

3. INTRODUCTION
• The availability of limited fossil fuel reserves, climatic effects, and
greenhouse gas emissions has compelled the focus toward renewable
power generation in the past years.
• Solar and wind power become prominent technologies to supply
electrical load in remote and off-grid locations owing to the recent
advancements in power electronic storage devices.
• The hybrid renewable energy system can be designed using
mathematical models of different components and optimization
techniques.

4. EXISTING SYSTEM
• In conventional single-stage charging system, a bidirectional DC-DC
converter is connected between DC-link of inverter and battery for
power flow during non isolated modes.
• In the integrated charger, the bidirectional DC-DC converter of
conventional single-stage system connected between battery and DC-
link is integrated with front-end converter at the cost of some
additional switches.
• Thus main features of the proposed Hybrid modes are summarized
as (a) dual sources for charging operation for EV vehicles.

5. PROPOSED SYSTEM
• In this work, a new power electronic converter (PEC) has been developed
for plug-in electric vehicles (PEVs) utilizing grid, solar and wind sources.
• The optimal configuration consists of solar capacity of 12V/10 W and
wind capacity of 12V/2.5AH along with grid sales and purchase capacities
of 220V/5Okhz.
• The DC bus is connected with wind turbines, SPV panels, and a charging
station, while the electrical load is connected to the EV Charging station.
• The power management is more crucial in a hybrid AC/DC system
compared to a single AC or DC system. The efficiency of the system is
enhanced if the renewable energy systems are integrated with the grid.

6. BLOCK DIAGRAM

7. PROPOSED TOPOLOGY

8. HARDWARE REQUIREMENTS
• PV pannel: 12V 10W
• Transformer: 12v
• Power MOSFET: IRF840
• Driver IC: IR2112
• Capacitor: 470uF (25V); 1000uF
• Controller: PIC16F877A
• Regulators: LM7805; LM7812
• Diodes: 1N4000; 1N5408
• Inductors: 100uH; 200uH; 1mH

9. CONCLUTION
• The efficiency of the system is enhanced if the renewable energy
systems are integrated with the grid.
• In this paper, a detailed mathematical model and operation strategy
are presented to deduce the component sizing of solar wind hybrid
system that incorporates an EV charging station.
• The proposed system will be helpful in promoting renewable energy
sources in smart grid and can reduce the dependence of a small
community on the grid.