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Photovoltaic (PV) systems used to power AC mains in grid tie applications have inherent system architecture issues when facing temporary and permanent single cell failures. The first method (Generation I) of serially connecting PV cells requires a large investment in PV cells, grid tie inverters, cabling and installation. The advent of microinverters (Generation II) provided the ability to connect...
Partial Shading has a disproportional impact on power production of photovoltaic systems. A microinverter system architecture with a 72- cell Sanyo module is presented as baseline system for comparison. Results are presented on worst case shading scenarios for a micro inverter system. This work presents a two stage system architecture which is robust to module level partial shading. The first stage...
Vehicle to Grid (V2G) has become a research area of interest in recent years. This project seeks to design a power electronic interface (PEI) for a niche application in the V2G research space. This system's objective is to allow a household to receive power from a V2G equipped vehicle in much the same way a backup generator would be used. To facilitate this objective, a novel backstepping controller...
The large scale deployment of Electric Vehicle (EV) charging infrastructure can result in high added utility costs due to the peak demand cost structure in utility bills for commercial and industrial users. A method to minimize this disincentive to EV adoption is proposed that relies on forecasting demand so that EV charging activity can be intelligently controlled. This study examines multiple forecasting...
The impact of Battery Electric Vehicle (BEV) charging on the electrical demand of a commercial / industrial energy consumer is examined. A Power Monitoring and Control System (PMCS) is introduced as a method to limit the disincentive to large scale BEV adoption resulting from increased demand costs associated with uncontrolled BEV charging. Reductions in added costs of up to 90% are possible with...
Abstract: This paper argues that capitalist accumulation requires imperialist expansion, and that this expansion creates a “raced” surplus laboring population. The argument proceeds in seven parts: that Marx's assertion in chapter 25 of Capital that capitalism produces an ever‐increasing relative surplus population is tenable in all but the longest of time frames; that imperial expansion played an...
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