Aalborg Universitet Hybrid Three-Phase/Single-Phase Microgrid Architecture with Power Management Capabilities
... single-phase microgrids is preferred (CB1 open). In this case, the loads in phase-B will lose the power supply and may not operate normally unless they can be supplied by some other power source. On the other hand, the power generated by DGs in phase-A and phase-C can be adequate, but will be restri ...
... single-phase microgrids is preferred (CB1 open). In this case, the loads in phase-B will lose the power supply and may not operate normally unless they can be supplied by some other power source. On the other hand, the power generated by DGs in phase-A and phase-C can be adequate, but will be restri ...
The closed-loop control of a three-phase inverter Frasz, Derek P.
... For several advantageous reasons including enhanced survivability and reduced platform cost [1], the U.S. Navy intends to shift from radial electric power distribution to zonal distribution in its next generation surface combatants. In this arrangement, a starboard and a port main bus supply high vo ...
... For several advantageous reasons including enhanced survivability and reduced platform cost [1], the U.S. Navy intends to shift from radial electric power distribution to zonal distribution in its next generation surface combatants. In this arrangement, a starboard and a port main bus supply high vo ...
Aalborg Universitet
... ,the MG is able to operate either in grid-connected or islanded mode, with possibility of seamless transitions between them. An important advantage of microgrids is improving energy efficiency with the system of producing combined heat and power (CHP) combined, which captures thermal energy resultin ...
... ,the MG is able to operate either in grid-connected or islanded mode, with possibility of seamless transitions between them. An important advantage of microgrids is improving energy efficiency with the system of producing combined heat and power (CHP) combined, which captures thermal energy resultin ...
Mode VI (t6-t7): The output capacitor C supplies the load
... Zeta converter [11]-[17]. However, the result is a topology with many power elements. Since PBBC has two switches, providing soft-switching conditions for both switches needs more elements. E.g., in a ZCT PBBC, if by employing only one auxiliary cell soft-switching conditions can be provided for bot ...
... Zeta converter [11]-[17]. However, the result is a topology with many power elements. Since PBBC has two switches, providing soft-switching conditions for both switches needs more elements. E.g., in a ZCT PBBC, if by employing only one auxiliary cell soft-switching conditions can be provided for bot ...
Integer-N/Fractional-N PLL Synthesizer ADF4155
... when used with an external loop filter, external voltage controlled oscillator (VCO), and external reference frequency. The ADF4155 is for use with external VCO parts up to an 8 GHz operating frequency. The high resolution programmable modulus allows synthesis of exact frequencies with 0 Hz error. T ...
... when used with an external loop filter, external voltage controlled oscillator (VCO), and external reference frequency. The ADF4155 is for use with external VCO parts up to an 8 GHz operating frequency. The high resolution programmable modulus allows synthesis of exact frequencies with 0 Hz error. T ...
Practical Approach in Designing Conducted EMI Filter to Mitigate
... CM consist of high frequency impulses, there is a high probability that the noise will see the high frequency transformer just as a coupling capacitor and pass through unobstructed. Stray capacitor paths may exist within SMPS because they are smaller in physical size and more densely packaged as com ...
... CM consist of high frequency impulses, there is a high probability that the noise will see the high frequency transformer just as a coupling capacitor and pass through unobstructed. Stray capacitor paths may exist within SMPS because they are smaller in physical size and more densely packaged as com ...
Aalborg Universitet EHV/HV Underground Cable Systems for Power Transmission Bak, Claus Leth
... This PhD study is an unusual one. I have been working with electric power engineering for 20 years, both in the industry for 5 years and in my present position at the Department of Energy Technology at Aalborg University, where I have held a professor position since 2011. The main motivation for ...
... This PhD study is an unusual one. I have been working with electric power engineering for 20 years, both in the industry for 5 years and in my present position at the Department of Energy Technology at Aalborg University, where I have held a professor position since 2011. The main motivation for ...
Aalborg Universitet Power Control Flexibilities for Grid-Connected Multi-Functional Photovoltaic Inverters
... PV energy (e.g., solar irradiance variations and temperature fluctuations, and thus fluctuating PV power), which will as a consequence affect the availability, the reliability, and the quality of the distributed grid that is connected to. Even for residential PV systems of a few kilowatts, the impac ...
... PV energy (e.g., solar irradiance variations and temperature fluctuations, and thus fluctuating PV power), which will as a consequence affect the availability, the reliability, and the quality of the distributed grid that is connected to. Even for residential PV systems of a few kilowatts, the impac ...
J.M. Rivas, O. Leitermann, Y. Han, and D.J. Perreault, “A Very High Frequency dc-dc Converter Based on a Phi-2 Resonant Inverter,” 2008 IEEE Power Electronics Specialists Conference , June 2008, pp. 1657 1666
... inverter topology that overcomes the limitations described above. The so-called Φ2 inverter (shown in Fig. 5) introduced in [14], [21], [22] is a highly simplified variant of the class Φ inverter [23]–[25]. It operates with a much reduced voltage stress across the switch (slightly over twice the inp ...
... inverter topology that overcomes the limitations described above. The so-called Φ2 inverter (shown in Fig. 5) introduced in [14], [21], [22] is a highly simplified variant of the class Φ inverter [23]–[25]. It operates with a much reduced voltage stress across the switch (slightly over twice the inp ...
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.