Half stepping techniques
... constant torque over all positions. This can be done if the current level is increased to approximately 140% of the nominal two-phase-on current, in the half-step positions (i.e. 2, 4, 6, 8 in figures 1 and 2). This is done by changing the value of Rs and/or Vref. The currents in the two-phase-on po ...
... constant torque over all positions. This can be done if the current level is increased to approximately 140% of the nominal two-phase-on current, in the half-step positions (i.e. 2, 4, 6, 8 in figures 1 and 2). This is done by changing the value of Rs and/or Vref. The currents in the two-phase-on po ...
MAX9710/MAX9711 3W Mono/Stereo BTL Audio Power Amplifiers with Shutdown General Description
... which allows these devices to operate from noisy supplies without additional, costly power-supply conditioning. An ultra-low 0.005% THD+N ensures clean, low-distortion amplification of the audio signal while click-and-pop suppression eliminates audible transients ...
... which allows these devices to operate from noisy supplies without additional, costly power-supply conditioning. An ultra-low 0.005% THD+N ensures clean, low-distortion amplification of the audio signal while click-and-pop suppression eliminates audible transients ...
Reduction of crosstalk on printed circuit board using genetic
... Stator voltage control of induction motor drives is a cheaper and more reliable scheme of speed control and is widely employed [1]. Capacitor-run single-phase motors combined with stator voltage control are quite commonly used for domestic fans and low-power industrial applications. Generally, a tri ...
... Stator voltage control of induction motor drives is a cheaper and more reliable scheme of speed control and is widely employed [1]. Capacitor-run single-phase motors combined with stator voltage control are quite commonly used for domestic fans and low-power industrial applications. Generally, a tri ...
Technical description of the Solar-Log1000 PM+ - Solar
... 60 %, 30 % and 0 %. Each power level here is controlled by a single input. It must be noted that some inverters when reducing to 0 % do not reduce completely to 0 watts but supply a certain minimum residual power (e.g. SMA SB versions). When the power is reduced to 0 % (level 4) the Solar-Log™ r ...
... 60 %, 30 % and 0 %. Each power level here is controlled by a single input. It must be noted that some inverters when reducing to 0 % do not reduce completely to 0 watts but supply a certain minimum residual power (e.g. SMA SB versions). When the power is reduced to 0 % (level 4) the Solar-Log™ r ...
ADVANCED SERIES CONNECTION OF SUBMULTILEVEL
... where, Nswitch,sub, Ndriver,sub, NIGBT,sub, and Nsource,sub are the number of switches, number of switches drivers in one sub-multilevel inverter, number of IGBTs in one sub-multilevel inverter, and number of dc sources in one sub-multilevel inverter, respectively. For the proposed typical sub-multi ...
... where, Nswitch,sub, Ndriver,sub, NIGBT,sub, and Nsource,sub are the number of switches, number of switches drivers in one sub-multilevel inverter, number of IGBTs in one sub-multilevel inverter, and number of dc sources in one sub-multilevel inverter, respectively. For the proposed typical sub-multi ...
PPT - School of Engineering and Applied Science
... values of the inverter corresponding to all the input values within the range of Gnd and Vdd. • The input varies from 0 (Gnd) to 5V (Vdd) in our case and so does the output. ...
... values of the inverter corresponding to all the input values within the range of Gnd and Vdd. • The input varies from 0 (Gnd) to 5V (Vdd) in our case and so does the output. ...
S1610C
... Listed sound output up to 90 dBA at 10 feet, and a listed frequency response of 400 to 4000 Hz. Strobes shall use filtered power or unfiltered power supply (full-wave-rectified). All models shall have provisions for standard reverse polarity type supervision and IN/OUT field wiring using terminals t ...
... Listed sound output up to 90 dBA at 10 feet, and a listed frequency response of 400 to 4000 Hz. Strobes shall use filtered power or unfiltered power supply (full-wave-rectified). All models shall have provisions for standard reverse polarity type supervision and IN/OUT field wiring using terminals t ...
Polylux_Comp_gb1.pps
... Thanks to its galvanic isolation, the C25D Compensator represents the ideal solution in case of a high level of 3rd harmonic voltage. Additional advantages are: reduction of the electromagnetic disturbances coming from the supply network, optional voltage adaptation and the possibility to use indepe ...
... Thanks to its galvanic isolation, the C25D Compensator represents the ideal solution in case of a high level of 3rd harmonic voltage. Additional advantages are: reduction of the electromagnetic disturbances coming from the supply network, optional voltage adaptation and the possibility to use indepe ...
International Electrical Engineering Journal (IEEJ) Vol. 6 (2015) No.6, pp. 1925-1930
... The conventional UPFC, shown in Fig. 2 is the combination of two voltage source converters (VSC); one converter connected to the power system through a shunt transformer, while the second converter is inserted into the transmission line via a series transformer. The converters are connected by a com ...
... The conventional UPFC, shown in Fig. 2 is the combination of two voltage source converters (VSC); one converter connected to the power system through a shunt transformer, while the second converter is inserted into the transmission line via a series transformer. The converters are connected by a com ...
EC23776782
... The dynamic modeling of a Fuel Cell Distributed Generation (FCDG) system is an important issue that needs to be carefully addressed. To study the performance characteristics of FCDG systems, accurate models of fuel cells are needed. Moreover, models for the interfacing power electronic circuits in a ...
... The dynamic modeling of a Fuel Cell Distributed Generation (FCDG) system is an important issue that needs to be carefully addressed. To study the performance characteristics of FCDG systems, accurate models of fuel cells are needed. Moreover, models for the interfacing power electronic circuits in a ...
AN-776 20 Watt Simple Switcher Forward Converter (Rev. A)
... Reproduction of significant portions of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. TI is not responsible or liable for such altered documentation. Info ...
... Reproduction of significant portions of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. TI is not responsible or liable for such altered documentation. Info ...
LTC4402-1/LTC4402-2 - Multiband RF Power Controllers for EDGE/TDMA.
... (slow loops) the power ramp sidebands. The LTC4402-X operates open loop until an RF voltage appears at the RF pin, at which time the loop closes and the output power follows the DAC profile. The RF power amplifier will require a certain control voltage level (threshold) before an RF output signal is ...
... (slow loops) the power ramp sidebands. The LTC4402-X operates open loop until an RF voltage appears at the RF pin, at which time the loop closes and the output power follows the DAC profile. The RF power amplifier will require a certain control voltage level (threshold) before an RF output signal is ...
Sample Question Paper for 9210-114 Graduate Diploma in Electrical Engineering
... given in Table Q7. Output voltages of the two generators G1 and G2 are equal to their rated values. Generator G2 is earthed through a resistance of 700 Ω while generator G1 and all star connected windings of transformers are solidly earthed. ...
... given in Table Q7. Output voltages of the two generators G1 and G2 are equal to their rated values. Generator G2 is earthed through a resistance of 700 Ω while generator G1 and all star connected windings of transformers are solidly earthed. ...
... the AC power distribution in a properway, preserving AC line polarity and connecting earth ground such that all grounding points are connected to a single node or common point using the same cable gauge as the neutral and line(s) cables. Bad grounding connections between speakers and the rest of the ...
university of california at berkeley - Berkeley Robotics and Intelligent
... b. Calculate and label the values at Vi,CM={-7, 0, 7} volts. c. Calculate the value for ro2 at Vi,CM={-7, 0, 7} volts. Do we need to consider ro2 when calculating the first stage gain? d. Calculate the value for the first stage differential voltage gain, AVDM1, at Vi,CM={7, 0, 7} volts e. Use HSPICE ...
... b. Calculate and label the values at Vi,CM={-7, 0, 7} volts. c. Calculate the value for ro2 at Vi,CM={-7, 0, 7} volts. Do we need to consider ro2 when calculating the first stage gain? d. Calculate the value for the first stage differential voltage gain, AVDM1, at Vi,CM={7, 0, 7} volts e. Use HSPICE ...
ha200 : Optoma USA : http://www2.optoma.com/us
... ended output performance. For even greater fidelity two units can easily be configured for simultaneous use providing true balanced mode with increased transient speed and dynamic control ...
... ended output performance. For even greater fidelity two units can easily be configured for simultaneous use providing true balanced mode with increased transient speed and dynamic control ...
Twelve-Sided Polygonal Voltage Space Vector
... linear voltage control up to 12-step operation is possible from the present 12-sided scheme with less current control complexity. Index Terms—Common-mode voltage elimination (CME), multilevel inverter, polygonal voltage space vector. ...
... linear voltage control up to 12-step operation is possible from the present 12-sided scheme with less current control complexity. Index Terms—Common-mode voltage elimination (CME), multilevel inverter, polygonal voltage space vector. ...
Variable-frequency drive
A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable-speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.VFDs are used in applications ranging from small appliances to the largest of mine mill drives and compressors. However, around 25% of the world's electrical energy is consumed by electric motors in industrial applications, which are especially conducive for energy savings using VFDs in centrifugal load service, and VFDs' global market penetration for all applications is still relatively small. That lack of penetration highlights significant energy efficiency improvement opportunities for retrofitted and new VFD installations.Over the last four decades, power electronics technology has reduced VFD cost and size and has improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.VFDs are available in a number of different low- and medium-voltage AC-AC and DC-AC topologies.