June 15, 2014
June 15, 2014
June 18, 2014
Energy Conversion and Conservation
24.449.1 - 24.449.15
Educational Approach to the Methodology of Implementing Wireless Control of Power Flow in Hybrid Power SystemsAbstract— In this paper, the methodology of utilizing microcontrollers and transceiversto wirelessly control the power flow in a hybrid AC-DC power system through multiplebidirectional DC-DC and AC-DC converters in real-time is presented. The various stepsinvolved in developing this type of wireless control will be outlined with illustrations. Allof the various hardware configurations along with the software utilization will also bedemonstrated in detail. In this presented design, Matlab Simulink and TeraTerm Pro areused in conjunction with the STM-32F Discovery micro-controller and XBEEtransceivers. The end result of this design is to allow the user to wirelessly control theduty cycle of the pulse width modulated signals that control the switching devices of DC-DC and AC-DC converters to regulate the power flow in the propsed hybrid AC-DCpower system. The proposed methodology has future applications in hybrid micro gridsto allow efficient and reliable coordination of power flow.Educational aspects:The presented utilization of micro-controllers and transceivers in the wireless control ofDC-DC and AC-DC converters encompasses several educational aspects such as:Comprehensive instruction in wireless communications between devices The process of creating wireless communications between the XBEE transceivers and micro-controllers to send a user controlled duty cycle is explained thoroughly and can be observed on an oscilloscope.The process involved in building Simulink models that allow for user controlled powerflow A detailed description of all the library blocks used in Matlab Simulink and their parameters is presented. Specific libraries allow us to communicate with the TeraTerm Pro software, the terminal used by the user to vary the duty cycle of specific converters.Applications to hybrid micro grids are also presented for those interested in thecoordination and control of power flow in micro grids The hybrid micro grid detailed in this paper represents a plug-in electric vehicles (PEVs) charging parking lot that connects to the main utility through a common DC bus. The vehicles are represented by batteries which can either receive energy from the grid to charge themselves or absorb/inject active and reactive power into the grid.
Ma, T., & Mohammed, O. A., & Serrano, B. L. (2014, June), Educational Approach to the Methodology of Implementing Wireless Control of Power Flow in Hybrid Power Systems Paper presented at 2014 ASEE Annual Conference & Exposition, Indianapolis, Indiana. 10.18260/1-2--20340
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