A Model Predictive Direct Current Control Strategy
... achieve long prediction horizons. Consequently, very low device switching frequencies can be achieved, making MPDTC very well suited to MV applications [3], [12]–[17]. A natural extension of MPDTC is model predictive direct current control (MPDCC), which in the context of an IM directly regulates th ...
... achieve long prediction horizons. Consequently, very low device switching frequencies can be achieved, making MPDTC very well suited to MV applications [3], [12]–[17]. A natural extension of MPDTC is model predictive direct current control (MPDCC), which in the context of an IM directly regulates th ...
this PDF file
... With the exception of Faraday's and Varley's induction coils, all the above devices had open cores. This arrangement indeed led to greater sparks, due to the greater electromagnetic energy accumulated in the device. At that time, alternating current was still unknown, and hence the described experim ...
... With the exception of Faraday's and Varley's induction coils, all the above devices had open cores. This arrangement indeed led to greater sparks, due to the greater electromagnetic energy accumulated in the device. At that time, alternating current was still unknown, and hence the described experim ...
ACTIONI/Q Q498 ® DC Powered DC Input Field Configurable
... grounded, the current output level that is being processed cannot be stopped. As an extreme example, if the output has been told to make a step change from 0V to 10V, the output could still be in the process of slewing to that value (which could take as long as 700mSec). When the Hold input is appli ...
... grounded, the current output level that is being processed cannot be stopped. As an extreme example, if the output has been told to make a step change from 0V to 10V, the output could still be in the process of slewing to that value (which could take as long as 700mSec). When the Hold input is appli ...
PDF
... Since a switching test conducted in advance predicted an operating power loss of 50% or lower than that of a conventional Si inverter, we designed the SiC inverter with a target power density of about four times greater than that of a similarly rated Si inverter. If both Si and SiC inverters have th ...
... Since a switching test conducted in advance predicted an operating power loss of 50% or lower than that of a conventional Si inverter, we designed the SiC inverter with a target power density of about four times greater than that of a similarly rated Si inverter. If both Si and SiC inverters have th ...
Aalborg Universitet Islanded Microgrids
... LBs, the compensation efforts need to be optimally distributed. In this paper, it is actualized by multiplying a tertiary compensation gain (TCG) to the compensation reference UCRdq before it is sent to local controllers. In addition, LPFs are needed between tertiary control and secondary control so ...
... LBs, the compensation efforts need to be optimally distributed. In this paper, it is actualized by multiplying a tertiary compensation gain (TCG) to the compensation reference UCRdq before it is sent to local controllers. In addition, LPFs are needed between tertiary control and secondary control so ...
MAX16907 36V, 2.2MHz Step-Down Converter with Low Operating Current General Description
... Synchronization Input. The device synchronizes to an external signal applied to FSYNC. The external clock frequency must be 10% greater than the internal clock frequency for proper operation. Connect FSYNC to GND if the internal clock is used. ...
... Synchronization Input. The device synchronizes to an external signal applied to FSYNC. The external clock frequency must be 10% greater than the internal clock frequency for proper operation. Connect FSYNC to GND if the internal clock is used. ...
Versatile Unified Power Quality Conditioner
... Abstract— This paper presents the study, analysis and practical implementation of a versatile unified power quality conditioner (UPQC), which can be connected in both three-phase three-wire or three-phase four-wire distribution systems for performing the series-parallel power-line conditioning. Thus ...
... Abstract— This paper presents the study, analysis and practical implementation of a versatile unified power quality conditioner (UPQC), which can be connected in both three-phase three-wire or three-phase four-wire distribution systems for performing the series-parallel power-line conditioning. Thus ...
Power Measurement
... In the megahertz to gigahertz range, standard wattmeters use probes in waveguides with rectifiers. Wattmeters Based on Digital Multipliers Sampling Wattmeters. The most important wattmeter operating on discrete samples is the sampling wattmeter (Figure 39.13). It is essentially composed of two analo ...
... In the megahertz to gigahertz range, standard wattmeters use probes in waveguides with rectifiers. Wattmeters Based on Digital Multipliers Sampling Wattmeters. The most important wattmeter operating on discrete samples is the sampling wattmeter (Figure 39.13). It is essentially composed of two analo ...
Turbine Supervisory Guide
... An accelerometer operates below its first natural frequency. The rapid rise in sensitivity approaching resonance is characteristic of an accelerometer, which is an un-damped single-degree-of-freedom spring mass system. Generally speaking, the sensitivity of an accelerometer and the ratio between its ...
... An accelerometer operates below its first natural frequency. The rapid rise in sensitivity approaching resonance is characteristic of an accelerometer, which is an un-damped single-degree-of-freedom spring mass system. Generally speaking, the sensitivity of an accelerometer and the ratio between its ...
Turkey Point Units 6 & 7 COL Application Part 2 — FSAR
... FPL owns and operates the power transmission system for Turkey Point Units 6 & 7. FPL is the largest investor-owned electric utility in Florida, serving more than 4.4 million customers. The FPL power transmission system consists of transmission lines and substations that link the various generation ...
... FPL owns and operates the power transmission system for Turkey Point Units 6 & 7. FPL is the largest investor-owned electric utility in Florida, serving more than 4.4 million customers. The FPL power transmission system consists of transmission lines and substations that link the various generation ...
Subsynchronous torque interaction for HVDC Light B - IEA
... study is always performed. If the screening study indicates a potential risk for SSTI oscillations, a more detailed SSTI study is performed, and, if necessary, an SSTI damping controller has to be adapted and integrated in the HVDC control system. The new technology HVDC Light, HVDC transmission sys ...
... study is always performed. If the screening study indicates a potential risk for SSTI oscillations, a more detailed SSTI study is performed, and, if necessary, an SSTI damping controller has to be adapted and integrated in the HVDC control system. The new technology HVDC Light, HVDC transmission sys ...
Power Electronics - Key Technology for Renewable Energy
... renewable energy sources without any load control. This is further strengthened as no real large scale electrical energy storage systems exist. The wind turbine technology is one of the most emerging renewable energy technologies [3]-[12]. It started in the 1980’es with a few tens of kW production p ...
... renewable energy sources without any load control. This is further strengthened as no real large scale electrical energy storage systems exist. The wind turbine technology is one of the most emerging renewable energy technologies [3]-[12]. It started in the 1980’es with a few tens of kW production p ...
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.