NICOP - High Efficient Smart Home Integrated with DC Appliances
Abstract
The aim of study was to manage device operations consistent with user preferences. Designing, energy-control developing and functions optimizing were studied. It was found that a system was evaluated in terms of energy consumption reduction, costs reduction and user satisfaction. The combination of PV and electric vehicles under uncontrolled charging system and under the application of smart charging and vehicle-to-grid strategies were studied by Fattori et al. It was found that a smart charging control could provide better photovoltaic energy. The vehicle-to-grid could additionally assist managing the photovoltaic energy to shave the conventional load profile peaks. In addition, we have further developed PV-biodiesel hybrid-DC microgrid for community. The power sources for the hybrid DC microgrid system are from the PV Module, the Biodiesel module, the AC utility grid and batteries. The existing 25.5 kW PV module produces 320 VDC. The 40 kW biodiesel module will be set up to produce 320 VDC to the DC microgrid. Currently, the AC utility grid provides 240 VAC to each load module. The existing battery bank is 200 kW. The battery will discharge 240 VDC to the DC microgrid. Even though there are various types of renewable energy sources, the PV and biodiesel generator were selected to be evaluated with the DC microgrid system. This is due to the fact that PV does not have a fuel cost and has low maintenance. However, PV can only provide power during the daytime. Therefore, a biodiesel generator was selected to assist with the 24-hr load. The advantages of the biodiesel generator are that the generator is commercially available, the fuel does not have to be pretreated prior to use, and biodiesel fuel can be easily acquired. If biodiesel is not available, commercial diesel fuel could also be used as a temporary replacement. For higher load demands than the PV and biodiesel can supply, AC power from the main grid will be used as back up. The experiment determined the optimum ratio for using from PV, biodiesel and AC back up from the utility grid based on economic and environmental viability. The data was collected for Solar Multiples (SM) and Biodiesel Multiples (BM) to demine the appropriate power from PV, biodiesel, and battery bank. Moreover, simulation software was also developed to integrate other renewables, including wind and microhydro. The DC community microgrid have been successfully developed from the prior NICOP projects. Therefore, in this work, adiCET-DC Smart Home will be studied with the aim of energy and electricity management for the appliance in home. It will be provide security, convenience, easy understanding and energy consumption reduction for resident. According to our previous work, using DC power instead of AC could reduce energy loss. It could eliminate DC/AC or AC/DC power conversion step in case of using inverter. Moreover, it was confirmed that DC system could be operated very well in general house. The power sources for the adiCET-DC Smart Home are from the PV module, the biodiesel module and the AC utility grid. These PV and biodiesel will produce DC power directly and all appliances used in this research will be modified as DC appliances. Therefore, AC to DC or DC to AC converter is not required. In the previous research, batteries were used as energy storage module. For this research, electric vehicle will be used for the maximum benefit. Electric vehicle could recharge from the rest of energy produce from renewable energy and it could discharge to other electric appliances when the energy demand is higher than supply. For the system evaluation, all of smart home appliances energy consumption data will be collected and analyzed. And energy conservation measures are generated and performed while maintaining comfort of users. Using these methods, energy management services for smart homes can be provided more easily and efficiently.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 08, 2016
- Source ID
- N629091512066
Entities
People
- Worajit Setthapun
Organizations
- Office of Naval Research
- United States Navy