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This paper presents the development of a wind tunnel that will be used for wind turbine testing in a controlled environment. The prototype is designed to be able to provide wind speeds of up to 20 m/s (~43mph) depending on the cross sectional area of the tunnel chamber. A 42 inch tube axial fan is driven by a 5hp induction motor using a variable frequency(More)
Masking-level differences (MLDs) for the repeated high-pass (2000-Hz) and low-pass (2000-Hz) 100-microseconds pulses were obtained as a function of the number of transient repetitions and the repetition rate. MLDs compared to the NoSo condition were obtained for the NoSpi and NoSd binaural configurations (Sd refers to the conditions in which there was a(More)
As more sustainable energy generation is integrated into power grid, the control of power flow in an efficient and effective manner becomes more and more essential. A new innovative device is presented that allows the control of line power flow without the high harmonics and efficiency losses of traditional methods. This paper presents the dynamic response(More)
This paper applies the electrogeometric model of lightning exposure to a wind turbine to compute its risk of damage due to a direct lightning strike in an area of known lightning flash density. For a typical 45 m wind turbine, the probability of being struck by a downward negative flash, as predicted by the model, agrees with the observed lightning strike(More)
As the number of transistors in microprocessors increases, their power demand increases accordingly. This poses design challenges for their power supply module called VRM (Voltage Regulator Module) especially when operated at sub voltage range. This paper presents the design of a new multiphase multi-interleaving topology that addresses these challenges. A(More)
This paper presents a digitally-controlled paralleled DC-DC converter. The main objective of the digital control is to achieve load sharing while operating at close to peak efficiency over an extremely wide load range. Results from computer simulations using Simulink show the digital control could indeed accomplish the objectives, but the improvements over(More)
  • Luis Obispo, Karina Coleman Davenport, Dale Dolan
  • 2015
Household appliances utilize single-phase motors to perform everyday jobs whether it is to run a fan in an air conditioner or the compressor in a refrigerator. With the movement of the world going " green " and trying to make everything more efficient, it is a logical step to start with the items that we use every day. This can be done by replacing(More)
The Cal Poly Sustainable Power for Electrical Resources (SuPER) project is a solar power DC distribution system designed to autonomously manage and supply the energy needs of a single family off-the-grid home. The following thesis describes the improvement and redesign of a MATLAB Simulink model for the Cal Poly SuPER system. This model includes a(More)