Variable Frequency Drives - a Comparison of VSI versus
... the capacities of the power semiconductor devices (IEGT and GCT) and the cooling systems. The nominal ratings are based on 40° C maximum ambient temperature and altitudes less than 1OOOm. Applications outside these conditions require de-rating. b. There are no limitations on input voltage because th ...
... the capacities of the power semiconductor devices (IEGT and GCT) and the cooling systems. The nominal ratings are based on 40° C maximum ambient temperature and altitudes less than 1OOOm. Applications outside these conditions require de-rating. b. There are no limitations on input voltage because th ...
Y4101148153
... controller. The self-excited induction generators (SEIGs) are considered to be well suited for generating electricity by means of conventional energy sources and for supplying electrical energy in remote and rural areas. Induction generators have many advantages such as cost, reduced maintenance, ru ...
... controller. The self-excited induction generators (SEIGs) are considered to be well suited for generating electricity by means of conventional energy sources and for supplying electrical energy in remote and rural areas. Induction generators have many advantages such as cost, reduced maintenance, ru ...
DRV591 数据资料 dataSheet 下载
... OUTPUT FILTER CONSIDERATIONS TEC element manufacturers provide electrical specifications for maximum dc current and maximum output voltage for each particular element. The maximum ripple current, however, is typically only recommended to be less than 10% with no reference to the frequency components ...
... OUTPUT FILTER CONSIDERATIONS TEC element manufacturers provide electrical specifications for maximum dc current and maximum output voltage for each particular element. The maximum ripple current, however, is typically only recommended to be less than 10% with no reference to the frequency components ...
4. Power limitation control at high marine currents
... 4. Power limitation control at high marine currents In many industrial projects (Sabella, OPENHYDRO, ALSTOM-Beluga) fixed pitch turbine are used to reduce the maintenance constraints and increase the robustness. So when the marine current speed is higher than the rated value, a fixed-pitch MCT is no ...
... 4. Power limitation control at high marine currents In many industrial projects (Sabella, OPENHYDRO, ALSTOM-Beluga) fixed pitch turbine are used to reduce the maintenance constraints and increase the robustness. So when the marine current speed is higher than the rated value, a fixed-pitch MCT is no ...
methods guide - Xitron Technologies
... This can, however, lead to a problem when measuring severely distorted waveforms. Since the sampling frequency and the input frequency are accurately locked, each sample will be essentially at the same phase delay within each cycle of the input signal. Thus any changes in the input signal, which hap ...
... This can, however, lead to a problem when measuring severely distorted waveforms. Since the sampling frequency and the input frequency are accurately locked, each sample will be essentially at the same phase delay within each cycle of the input signal. Thus any changes in the input signal, which hap ...
LTC1757A-1/LTC1757A-2 - Single/Dual Band RF Power Controllers.
... The LTC®1757A-2 is a dual band RF power controller for RF power amplifiers operating in the 850MHz to 2GHz range. The LTC1757A is pin compatible with the LTC1757 but has improved RF detection range. The input voltage range is optimized for operation from a single lithium-ion cell or 3× NiMH. Several ...
... The LTC®1757A-2 is a dual band RF power controller for RF power amplifiers operating in the 850MHz to 2GHz range. The LTC1757A is pin compatible with the LTC1757 but has improved RF detection range. The input voltage range is optimized for operation from a single lithium-ion cell or 3× NiMH. Several ...
IOSR Journal of Electronics & Communication Engineering (IOSR-JECE)
... performance p-q theory is much faster than compensation using SDM. In [16] it is proved that p-q theory compensates the undesirable current components within 1st cycle whereas SDM takes about 14 cycles (approximately 0:23 seconds for 50 Hz source). So for faster power quality improvement SDM is not ...
... performance p-q theory is much faster than compensation using SDM. In [16] it is proved that p-q theory compensates the undesirable current components within 1st cycle whereas SDM takes about 14 cycles (approximately 0:23 seconds for 50 Hz source). So for faster power quality improvement SDM is not ...
LTC1569-7 - Linear Technology
... frequency at which the filter AC response exhibits >1dB of gain peaking. Note 5: The minimum clock frequency is arbitrarily defined as the frequecy at which the filter DC offset changes by more than 5mV. Note 6: Thermal resistance varies depending upon the amount of PC board metal attached to the de ...
... frequency at which the filter AC response exhibits >1dB of gain peaking. Note 5: The minimum clock frequency is arbitrarily defined as the frequecy at which the filter DC offset changes by more than 5mV. Note 6: Thermal resistance varies depending upon the amount of PC board metal attached to the de ...
HMC284MS8G / 284MS8GE
... 1. Set A/B control to 0/+5V, Vdd = +5V and use HCT series logic to provide a TTL driver interface. 2. Control inputs A/B can be driven directly with CMOS logic (HC) with Vdd = +5 Volts applied to the CMOS logic gates. 3. DC blocking capacitors are required for each RF port as shown. Capacitor value ...
... 1. Set A/B control to 0/+5V, Vdd = +5V and use HCT series logic to provide a TTL driver interface. 2. Control inputs A/B can be driven directly with CMOS logic (HC) with Vdd = +5 Volts applied to the CMOS logic gates. 3. DC blocking capacitors are required for each RF port as shown. Capacitor value ...
T200 Manual 0-1-5
... T200 has five storage locations for the calibration data. One is for GLOBAL calibration data, and the rest are for four independent calibration data sets to be used in the SWEEP FREQ PLOT mode. T200 will always use the GLOBAL calibration data set in SINGLE FREQUENCY mode. In SWEEP FREQ PLOT, GLOBAL ...
... T200 has five storage locations for the calibration data. One is for GLOBAL calibration data, and the rest are for four independent calibration data sets to be used in the SWEEP FREQ PLOT mode. T200 will always use the GLOBAL calibration data set in SINGLE FREQUENCY mode. In SWEEP FREQ PLOT, GLOBAL ...
DSP-Controlled Power Electronic Interface for Fuel - dl.edi
... push pull, half bridge, full bridge, etc., and dc-ac inverter topologies of 3-phase PWM inverter, Z source inverter, LLCC inverter, etc., have been proposed by various authors and are available in literature [28]–[46]. A comparison of different dc/dc converter and dc/ac inverter topologies based on ...
... push pull, half bridge, full bridge, etc., and dc-ac inverter topologies of 3-phase PWM inverter, Z source inverter, LLCC inverter, etc., have been proposed by various authors and are available in literature [28]–[46]. A comparison of different dc/dc converter and dc/ac inverter topologies based on ...
Institutionen för systemteknik Department of Electrical Engineering A “Divide-by-Odd Number” Injection-Locked Frequency Divider.
... This chapter provides a brief introduction to the project and the context. Section 1.1 provides a brief introduction to applications of PLL based frequency synthesizers while Section 1.2 talks about the objectives of this project, highlighting some of the previous and current work in the field of IL ...
... This chapter provides a brief introduction to the project and the context. Section 1.1 provides a brief introduction to applications of PLL based frequency synthesizers while Section 1.2 talks about the objectives of this project, highlighting some of the previous and current work in the field of IL ...
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.