Instrumentation for High Performance Nonintrusive Electrical Load Monitoring

1998 ◽  
Vol 120 (3) ◽  
pp. 224-229 ◽  
Author(s):  
S. R. Shaw ◽  
C. B. Abler ◽  
R. F. Lepard ◽  
D. Luo ◽  
S. B. Leeb ◽  
...  
Keyword(s):  
High Performance ◽  
Electrical Load ◽  
Energy Usage ◽  
Spectral Content ◽  
Variable Speed Drives ◽  
Transient Event ◽  
Spectral Estimates ◽  
Steady State Operation ◽  
Load Monitoring ◽  
Operation Techniques

This paper reviews the design and implementation of hardware and software tools for nonintrusive electrical load monitoring. Estimates of spectral content in measured waveforms can be used to determine in real time the operating schedule of loads at a target site. Techniques for transient event detection are reviewed. These techniques can detect the turn-on and turn-off transients of individual loads, and can be used to easily determine the energy usage of loads that draw constant power in steady-state operation. Techniques for monitoring the power consumption of smoothly varying loads (e.g., variable speed drives) using spectral estimates are also discussed.

Fundamentals of Solid-State AC Variable-Speed Drives

1969 ◽  
Vol 6 (01) ◽  
pp. 76-82
Author(s):  
Donald L. Schoen
Keyword(s):  
Solid State ◽  
High Performance ◽  
Practical Implementation ◽  
Variable Speed ◽  
Variable Speed Drives ◽  
Ac Drive ◽  
Ac Motor ◽  
Economic Trends ◽  
History Of ◽  
Drive Systems

Solid-state ac variable-frequency drives offer a new generation of high-performance, maintenance-free drive systems. The desire to use the rugged ac motor as a high-performance, variable-speed device goes back many years; however, its practical implementation had to wait three-quarters of a century for development of the silicon controlled rectifier. This paper opens with a brief review of the history of variable-speed dc and ac drive systems. Then the fundamentals of solid-state ac variable-speed drives are presented with emphasis on future technical and economic trends. The ac system is evaluated as an economic solution to providing basic functional drive requirements. The characteristics are compared with traditional high-performance dc systems. Finally, an attempt is made to describe the solid-state ac variable-speed drive of the future.

The Experimental Consideration for TBM Mock-Up Effect on Plasma Performance Based on MAPES Platform in EAST

2013 ◽  
Author(s):  
Songlin Liu ◽  
Fang Ding ◽  
Xiangcun Chen ◽  
Yong Pu ◽  
Jia Li ◽  
...  
Keyword(s):  
Steady State ◽  
Plasma Physics ◽  
Evaluation System ◽  
High Performance ◽  
Martensitic Steels ◽  
Steady State Operation ◽  
Magnetic Analysis ◽  
Rafm Steel ◽  
The Impact

EAST can provide better opportunities to contribute development of ITER-relevant plasma physics and engineering because it has ITER-like configuration, and has achieved 10s H-mode plasma, and aims steady-state operation of DD high performance plasma. The impact of Test blanket module (TBM) using RAFM (reduced activation ferritic/martensitic) steels on tokomak plasma is a major concern in ITER operations. In order to assess this effect due to TBM local ripple, an experiment plan of TBM mockup using RAFM steel is being planned on MAPES (Material and Plasma Evaluation System) in EAST. This paper reports experimental consideration on MAPES based on magnetic analysis and ripple calculation at separatrix point. The relevant experiments strategy and plan in EAST are also proposed.

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