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Prof. Dr-lng. Konstantin Meyl SCALAR WAVE TECHNOLOGY
Prof. Dr-lng. Konstantin Meyl SCALAR WAVE TECHNOLOGY

A New N-Way Power Divider/Combiner Suitable for High
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... The simulation of the BLDC motor was done using the software package MATLAB/SIMULINK. For this purpose, the motor’s block diagram was constructed, as shown in Fig.4.1. After running the simulation, the speed, torque, current, input and output power waveforms were recorded and analyzed. The inverter ...
Aalborg Universitet J.; Sørensen, T.
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... phenomena that take place in the breaker opening and closing process [6]. The different properties that are generally considered are the random nature of the arcing time, current chopping ability, the dielectric strength between contacts, and the quenching capabilities of the high frequency current ...
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... diode D can be replaced by a synchronous FET, which is still a passive switch. The active terminal “a” is the active switch terminal. The passive terminal “p” is the passive switch terminal. In a converter, the terminals a and p are always connected to a voltage source, such as VIN and ground in the ...
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... move. A number of types of electric motors exist, but most beambots use DC motors in some form or another. DC motors have the potential for very high torque capabilities (although this is generally a function of the physical size of the motor), are easy to miniaturize, and can be "throttled" via adj ...
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... interactions between tip and sample.6,7 The cantilever is mechanically driven near its resonant frequency so that the tip oscillates vertically, moving toward and away from the sample. The oscillation amplitude of the cantilever is monitored by lockin detection, and its value is maintained constant ...
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... provide a controlled and high-quality power exchange with the grid or local loads. In islanded mode, the local loads should be supplied by the DG units, which now act as controlled voltage sources (CVS) [3]. And the MGs need some form of control in order to avoid circulating currents between the DG ...
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Utility frequency



The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the frequency of the oscillations of alternating current (AC) in an electric power grid transmitted from a power plant to the end-user. In large parts of the world this is 50 Hz, although in the Americas and parts of Asia it is typically 60 Hz. Current usage by country or region is given in the list of mains power around the world.During the development of commercial electric power systems in the late 19th and early 20th centuries, many different frequencies (and voltages) had been used. Large investment in equipment at one frequency made standardization a slow process. However, as of the turn of the 21st century, places that now use the 50 Hz frequency tend to use 220–240 V, and those that now use 60 Hz tend to use 100–127 V. Both frequencies coexist today (Japan uses both) with no great technical reason to prefer one over the other and no apparent desire for complete worldwide standardization.Unless specified by the manufacturer to operate on both 50 and 60 Hz, appliances may not operate efficiently or even safely if used on anything other than the intended frequency.
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