A5075976578- Smart Grid Energy Management
- Building Energy and Comfort Optimization
- Energy Efficiency and Management
- Electric Motor Design and Analysis
- Multilevel Inverters and Converters
- Energy Load and Power Forecasting
- Energy Harvesting in Wireless Networks
- Indoor and Outdoor Localization Technologies
- Microgrid Control and Optimization
- Human Mobility and Location-Based Analysis
- Music and Audio Processing
- Innovative Energy Harvesting Technologies
- Facilities and Workplace Management
- Wireless Sensor Networks for Data Analysis
- Machine Fault Diagnosis Techniques
- Magnetic Properties and Applications
- Sensorless Control of Electric Motors
National Renewable Energy Laboratory
2011-2023
The induction motor equivalent circuit parameters are required for many performance and planning studies involving motors. These typically calculated from standardized tests, such as the no load, full locked rotor tests. However, test data is not available to end user. Alternatively, may be estimated based on published motor. This paper presents an iterative method estimating using only nameplate data.
Empirical techniques for characterizing electrical energy use now play a key role in reducing electricity consumption, particularly miscellaneous loads, buildings. Identifying device operating modes (mode extraction) creates better understanding of both and system behaviors. Using clustering to extract from load data can provide valuable insights into behavior identify opportunities savings. We present fast effective heuristic method data.
Commercial and residential buildings consume approximately 40% of the total energy in United States use 70% electricity. The electrical efficiency sector thus plays a vital role reducing use, peak demand, greenhouse gas emissions. Maximizing electricity is key priority for high-performance buildings; however, to date, distribution systems have received little attention. Rather, focus has been on broad categories end-use devices. As result, relatively small body literature relates commercial...
In conventional and harmonic power flow analysis, three-phase induction motors are typically modeled using constant parameters (power or impedance). Such models do not fully capture the impact of voltage deviation, unbalance, harmonics on motor losses. This paper discusses simple frequency-domain modeling techniques suitable for including an optimally fitted fundamental frequency ZIP model, several impedance scaling methods, a temperature correction procedure. The proposed improve accuracy...
Electricity consumption in the commercial sector is forecasted to increase by 0.5% on an annual bases between 2017 2050. This despite best design practices and adoption of more energy efficient resources for buildings. prevalent miscellaneous electrical loads that studies have shown if their usage tracked conveyed occupant will result up 34% reduction. Diverse tools research methodologies are being developed track location. paper addresses one such method identify location at point use using...
Miscellaneous electric loads comprise a growing percentage of commercial building energy use, expected to increase from 31% 43% total primary use by 2030. In simulations, these are often poorly modelled or outright neglected. A big box retail with grocery was found contain over 700 MELs. Through this study, 256 those devices were metered. That time-series data informed the creation 260 EnergyPlus model components. Those components made publicly available through newly developed Building...