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Vehicle to Grid (V2G) is the concept of connecting a group of electric vehicles (EV) to the grid for power transaction. EVs can be connected to the grid through the home interface or through the chargers available at charging stations. In this paper, a single phase on-board charger with low complexity control scheme is proposed for EV power transaction. The power flow from and to the grid is processed...
This paper puts forward a single-DC source based seven-level inverter for harvesting energy from renewable sources. Three single-phase transformers with cascaded outputs are powered from the switching power circuit resulting in then generation of multilevel at the output of the inverter. The proposed configuration can generate output voltage having levels of magnitude (−3VDC, −2VDC, −VDC, 0, VDC,...
In this paper, a phase balancing algorithm is developed to balance the load at each candidate node of the secondary distribution network from tail end of the feeder by rearranging the connections of consumer load/ service laterals. Phase balancing is a concept of re-phasing service laterals such that load on three phases is balanced. The algorithm is designed to handle three, two and single phase...
The concept of connecting group of electric vehicles (EVs) to the grid for power transaction is known as Vehicle-to-Grid (V2G). The EVs can be connected to the grid through V2G integrators and charging slots. The arrival of EVs in parking lot is time varying and random in nature and facilitating them to participate in power transaction is challenging and aggregator's responsibility. In this paper,...
In this paper, a simple single-phase grid-connected photovoltaic (PV) inverter topology consisting of a three-level inverter, an LCL filter, and a new current feedback method for active damping is considered. A dynamically rapid method is used for tracking the maximum power point (MPP) of photovoltaic arrays, known as ripple correlation control. The algorithm uses the current and voltage low-frequency...
Multilevel inverter (MLI) performance is high compared to the conventional two level inverters since they offer high power capability, associated with lower output harmonics and lower commutation losses. However the main drawback of MLI is their increased number of power devices, passive components, complex pulse width modulation control and balancing of capacitor voltages. In this paper the most...
The growing oil demands and the economic concerns have inspired the governments, car manufactures and the environmentalist to promote the manufacturing of Electrical Vehicles (EV). With developments in the power grid and advancements in the vehicle technology the EVs can contribute to the grid by selling or buying power from the grid. For the effective and efficient use of the V2G there is a major...
The Vehicle-to-Grid (V2G) concept has become a reality with developments in the power grid and vehicle technology. The electrical vehicle (EV) can be connected to the grid to contribute power and help in maintaining the grid stability for shorter duration of time. The communication between the grid control center (GCC) and Aggregator is very crucial as GCC sends the power requirement details to the...
There is a wide gap between the demand and supply of electrical energy. Far away rural areas are having dispersed loads in nature and hence increased transmission and distribution losses. Thus increasing electrical demand drives the attention towards available and feasible choices of distributed generation. India being a tropical country, solar is the natural choice of sustainable alternative. An...
The Vehicle to grid (V2G) has become a reality with the developments in power grid and electrical vehicle technology. The V2G acts as a source and can be connected to the grid for shaving peak. The information and communication technology (ICT) will play a key role in V2G communications in smart grid environment. The aggregator acts as an interface between the grid control center and electrical vehicles...
This paper proposes a detailed mathematical model of Photovoltaic(PV) array and a three-level control scheme of a single-phase grid-connected system including maximum power point tracker, voltage source inverter and its controller based on the MATLAB/Simulink tool. The PV model is developed by using basic circuit equations of the photovoltaic (PV) solar cells including the effects of solar irradiation...
This paper presents the integration of photovoltaic (PV), fuel cell (FC) and energy storage systems for reliable power generation. In this system FC is used as main power source and power from PV whenever available is harvested completely with storage system compensating for power fluctuations. This topology has high efficiency, modularity and fuel flexibility. The sources in this hybrid system complement...
Rural electrification is an integral component of poverty alleviation and rural growth of a nation. A developing nation, like India has 72.2 percent people living in rural areas. Still, electricity has not played an effective role in the socio-economic growth of villages. The Government of India has an ambitious target of providing electricity to all villages by 2008 and all rural households by 2012...
In this paper, the control model for a digitally controlled DC-DC converter is presented along with derivative filter. The digital implementation of this model gives the detailed description about the gain and phase responses of each block in the digital controller loop. Key problems such as quantization resolution of digital pulse width modulator (DPWM), steady state limit cycle oscillations and...
Rural electrification is an integral component of poverty alleviation and rural growth of a nation. In India, electricity has not played effective role in the socio-economic growth of village. Government of India has ambitious target of providing electricity to all villages by 2008 and all rural households by 2012. Steps are initiated with Rural Electric Corporation, State Electricity Boards, Reforms...
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