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Fault detection and fault accommodation as well as fault tolerance are important issues in closed-loop controlled three-phase converters. For such systems, power semiconductors and sensors are the most affected components by the occurrence of failures. Therefore, fault diagnosis and remedial operating strategies involving such components are highly required. In this work we propose a new reliable...
A self-healing mmWave SoC integrating an 8052 microcontroller with 12kB of memory, an ADC, a temperature sensor, and a 3-stage cascode 60GHz LNA, implemented in a 32nm SOI CMOS technology exhibits a peak gain of 21dB, an average 3.3dB NF from 53 to 62GHz and 18mW power consumption. An indirect NF sensing algorithm was implemented on the integrated uC, which enables an adaptive biasing algorithm to...
In this paper, we propose a new method to locate faults on overhead power transmission lines. Line-to-ground or line-to-line faults induce transient currents in the shield wire, which flow partially to ground through the towers. In the towers closest to the fault position, the transient currents are greater and this behavior can be used to locate the fault. The method uses sensors distributed along...
Medium-voltage cross-linked polyethylene (MV-XLPE) cables have an important role in the electrical power distribution system. For this reason, the study of XLPE insulation may lead to improve cable features and lifetime. Although relaxational analysis yield a lot of information about XLPE properties, sometimes their results are difficult to interpret. To overcome this handicap, we have used a combination...
In 2009 NRC commenced construction of a new laboratory to house the NRC watt balance. We describe the procedures used and give results for the measurements of the acceleration due to gravity in the new laboratory. The data will be linked both to those laboratories participating in the Key Comparison CCM.G-K1 of 2009, and to the Canadian Gravity Standardization Network.
Indium antimonide (InSb) has the highest electron mobility and saturation velocity of any conventional semiconductor, giving potential for a range of analogue and digital ultra-high speed, low power dissipation applications. N-channel quantum well FETs have been fabricated with current gain cut-off frequency (fT) of 305 GHz and power gain cut-off frequency (fmax) of 480 GHz at VDS of only 0.5 V. Outline...
This work presents fundamental building blocks for a 60 GHz transmitter front-end. The circuits are implemented in a 65 nm bulk CMOS technology, operate from a 1.2 V supply, and attain state-of-the-art performance for multi-Gb/s wireless applications. A single-stage, single-ended, power amplifier achieves peak power gain of 4.5 dB, output 1 dB compression point of 6 dBm, saturated power of 9 dBm,...
In the ocean there are mainly two ways of characterizing the properties of the sediment structure. One technique is to observe the properties by physically collecting core samples by in-situ instrumentation. The other is to use remote techniques to estimate the acoustic properties of the sediment and from these observations invert the sediment thickness and sound velocity by interpreting the reflected...
A twelve-frame 38 mm ?? 4 mm high-speed image converter camera is described. The exposure times can be step varied between 50 ns and 100 ms and the time interval between the first two frames step varied from 100 ns to 100 ms. The frame sequence can be chosen to be linear or geometrical.
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