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A.B. Maish
Sandia National Laboratories
PhysicsTracking systemPhotovoltaic systemOptoelectronicsControl theory
8Publications
3H-index
81Citations
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Publications 8
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#1A.B. Maish (SNL: Sandia National Laboratories)H-Index: 3
#2C. Atcitty (SNL: Sandia National Laboratories)H-Index: 2
Last. M. BrineH-Index: 1
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This paper discusses the reliability of photovoltaic projects including SMUD's PV Pioneer project, various projects monitored by Ascension Technology, and the Colorado Parks project. System times-to-failure range from 1 to 16 years, and maintenance costs range from 1 to 16 cents per kilowatt-hour. Factors contributing to the reliability of these systems are discussed, and practices are recommended that can be applied to future projects. This paper also discusses the methodology used to collect a...
50 CitationsSource
#1A.B. MaishH-Index: 3
#2C. Atcitty (SNL: Sandia National Laboratories)H-Index: 2
Last. S. HesterH-Index: 2
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To achieve the lowest life-cycle cost (LCC), photovoltaic (PV) systems must have the optimum mix of low first cost, low operation and maintenance (O&M) cost, and high availability. Additionally, the long-term health of the photovoltaic (PV) industry requires that PV systems work as expected. Although PV modules now enjoy high reliability due to a significant multi-year effort by both the U.S. Department of Energy (DOE) and industry, the same is not always true of PV systems. Even for systems tha...
2 Citations
#1A.B. Maish (SNL: Sandia National Laboratories)H-Index: 3
#2M. O'NeillH-Index: 1
Last. D.S. ShugarH-Index: 1
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The SolarTrak/sup TM/ array tracking controller, originally developed and licensed by Sandia National Laboratories as a low-cost, high-accuracy, reliable controller for photovoltaic (PV) concentrator arrays, has undergone significant development to make tracking accessible to a much broader segment of the PV market. Hardware and software improvements: (1) reduce power consumption for PV/battery-powered applications; (2) enable the controller to connect directly with low-cost, off-the-shelf, tele...
3 CitationsSource
#1A.B. Maish (SNL: Sandia National Laboratories)H-Index: 3
Last. D.S. ShugarH-Index: 1
view all 4 authors...
The SolarTrak{trademark} array tracking controller, originally developed and licensed by Sandia National Laboratories as a low-cost, high-accuracy, reliable controller for photovoltaic (PV) concentrator arrays, has undergone significant development to make tracking accessible to a much broader segment of the PV market. Hardware and software improvements (1) reduce power consumption for PV/battery- powered applications, (2) enable the controller to connect directly with low-cost, off-the-shelf, t...
#1A.B. Maish (SNL: Sandia National Laboratories)H-Index: 3
Progress made by the eight participating solar cell and solar collector manufacturers since the beginning of the US Department of Energy's multi-year photovoltaic Concentrator Initiative Program is reviewed. Point and line-focus cell manufacturers achieved peak efficiencies between 19% and 25% with designs that could be manufactured commercially. Collector manufacturers delivered prototype hardware of point and line-focus collectors representing commercially producible technology. >
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#1A.B. Maish (SNL: Sandia National Laboratories)H-Index: 3
Antireflection of optically clear glass used in photovoltaic concentrator refractive secondary optical elements (SOEs) was investigated using the neutral-solution etch process. Test coupons and SOEs made from barium zinc glass, which does not solarize under ultraviolet exposure, were successfully etched at the center-point process variable conditions at 87 degrees C and 24 hours. Reflectance of the plano-plano coupons dropped from 7.7% to 0.8%, with a corresponding increase in transmission from ...
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#1A.B. Maish (SNL: Sandia National Laboratories)H-Index: 3
Sandia's advanced SolarTrak control system provides Sun tracking, night and emergency stow, communication, and manual drive control functions, for one and two-axis solar trackers in a low-cost, user-friendly package. The author describes the hardware design features and sophisticated control algorithms, such as a six-degree self-alignment routine and a self-adjusting motor actuation time, that enhance SolarTrak's pointing accuracy and system reliability while at the same time reducing operation ...
17 CitationsSource
#1A.B. Maish (SNL: Sandia National Laboratories)H-Index: 3
The author describes the design features of a low-cost tracking controller for photovoltaic concentrator arrays which is designed for use in commercial fields. The system hardware and software are described, and the system development status, performance, and cost are discussed. The system achieves a powerful yet flexible control capability by using a commercially-available microcontroller. It uses an open-loop control algorithm that eliminates the need for a sun sensor, and it performs its own ...
9 CitationsSource
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