section 232923 - variable-frequency motor
... AC motor variable frequency controller (VFC) shall be of pulse width modulated (PWM) inverter type. The VFC shall be designed to convert 60 Hz input power to adjustable frequency output power to provide positive speed control to standard induction motors. The VFC shall be dedicated variable torque d ...
... AC motor variable frequency controller (VFC) shall be of pulse width modulated (PWM) inverter type. The VFC shall be designed to convert 60 Hz input power to adjustable frequency output power to provide positive speed control to standard induction motors. The VFC shall be dedicated variable torque d ...
Design of a Permanent-Magnet Synchronous Generator for a 2 MW
... fossil fuel, have led many countries to make effective use of wind energy for electric power generation. The horizontal-axis wind turbines-due to great heights from the ground level-are good variants to generate electricity at high power levels [1]. Generators used in wind turbines are divided into ...
... fossil fuel, have led many countries to make effective use of wind energy for electric power generation. The horizontal-axis wind turbines-due to great heights from the ground level-are good variants to generate electricity at high power levels [1]. Generators used in wind turbines are divided into ...
Integrated D-STATCOM with Supercapacitor Used in IEEE Industrial Distribution System Amin Nazarloo
... From 1988, custom power is introduced as a solution to power quality problems. D-STATCOM is one of the custom power devices, which locate shunt in network and applied to mitigate voltage sag and voltage swell [2-4]. The D-STATCOM has emerged as a promising device to provide not only for voltage sag ...
... From 1988, custom power is introduced as a solution to power quality problems. D-STATCOM is one of the custom power devices, which locate shunt in network and applied to mitigate voltage sag and voltage swell [2-4]. The D-STATCOM has emerged as a promising device to provide not only for voltage sag ...
1. Introduction
... bandpass and highpass responses from the same topology, (ii) no requirements for component matching conditions, (iii) electronic controllability of important filter parameters, (iv) simpler structure due to contains only one DDCCTA and three passive elements, and (v) low sensitivity performance. The ...
... bandpass and highpass responses from the same topology, (ii) no requirements for component matching conditions, (iii) electronic controllability of important filter parameters, (iv) simpler structure due to contains only one DDCCTA and three passive elements, and (v) low sensitivity performance. The ...
Design of JK Flip-Flop using MODFET Technology
... more data inputs. In digital circuit design, large proportion contributes to synchronous design and they are operated based on the clock signal to reduce the complexity of the circuit design. Technology scaling of a transistor feature size has provided a remarkable innovation in silicon industry for ...
... more data inputs. In digital circuit design, large proportion contributes to synchronous design and they are operated based on the clock signal to reduce the complexity of the circuit design. Technology scaling of a transistor feature size has provided a remarkable innovation in silicon industry for ...
T.C. Neugebauer, D.J. Perreault, J.H. Lang, C. Livermore, and S.D. Umans, “A Six-Phase Multilevel Inverter for MEMS Electrostatic Induction Micromotors,” 2002 IEEE Power Electronics Specialists Conference , Cairns, Australia, June 2002, pp. 695-670.
... frequencies are difficult to attain even with soft switching techniques, and realizing an appropriate modulation scheme would be equally difficult. Some form of multilevel inverter is more appropriate. General advantages of multilevel inverters include high purity output waveforms, low individual de ...
... frequencies are difficult to attain even with soft switching techniques, and realizing an appropriate modulation scheme would be equally difficult. Some form of multilevel inverter is more appropriate. General advantages of multilevel inverters include high purity output waveforms, low individual de ...
Arc Flash
... • OSHA 1910.132(d) Where work will be performed within the flash protection boundary, the flash hazard analysis shall determine, and the employer shall document, the incident energy exposure to the worker (in cal/cm2) • OSHA 1910.269(I)(6) Flame resistant (FR) clothing and PPE shall be used by the e ...
... • OSHA 1910.132(d) Where work will be performed within the flash protection boundary, the flash hazard analysis shall determine, and the employer shall document, the incident energy exposure to the worker (in cal/cm2) • OSHA 1910.269(I)(6) Flame resistant (FR) clothing and PPE shall be used by the e ...
Design and Construction of an Automatic Triggered Bell Ringer Circuit
... on the rise on a daily basis, making security one of the highest basic necessities [1]. In Nigeria, there is rather an increase in crime rate ostensibly due to its huge population size. Hence, the need to have strong security architecture in both domestic and commercial vicinities is of paramount ne ...
... on the rise on a daily basis, making security one of the highest basic necessities [1]. In Nigeria, there is rather an increase in crime rate ostensibly due to its huge population size. Hence, the need to have strong security architecture in both domestic and commercial vicinities is of paramount ne ...
DSP - 上海海事大学信息工程学院
... extraction followed by feature matching. (4) The Fourier decomposition is the basis for a broad and powerful area of mathematics called Fourier analysis, and the even more advanced Laplace and ztransforms. Most cutting-edge DSP algorithms are based on some aspect of these techniques. ...
... extraction followed by feature matching. (4) The Fourier decomposition is the basis for a broad and powerful area of mathematics called Fourier analysis, and the even more advanced Laplace and ztransforms. Most cutting-edge DSP algorithms are based on some aspect of these techniques. ...
frequency modulation
... – Noise can interfere with an FM signal and particularly with the high-frequency components of the modulating signal. – Noise is primarily sharp spikes of energy and contains a lot of harmonics and other high-frequency components. – To overcome high-frequency noise, a technique known as preemphasis ...
... – Noise can interfere with an FM signal and particularly with the high-frequency components of the modulating signal. – Noise is primarily sharp spikes of energy and contains a lot of harmonics and other high-frequency components. – To overcome high-frequency noise, a technique known as preemphasis ...
angle modulation
... After amplification, part of the signal is fed back through VCO where it results in frequency modulation of the VCO frequency. When the loop is in lock, the VCO frequency follows or tracks the incoming frequency. ...
... After amplification, part of the signal is fed back through VCO where it results in frequency modulation of the VCO frequency. When the loop is in lock, the VCO frequency follows or tracks the incoming frequency. ...
Evolutionary Optimization of Combinational Digital
... make optimization more effective. The structure of chromosomes and data coding are shown in Figure 2b. The first k columns of the chromosome represent subsequent circuit inputs. In the first row of these columns in the place "circuit input no. x", the number of the gate to which input the given circu ...
... make optimization more effective. The structure of chromosomes and data coding are shown in Figure 2b. The first k columns of the chromosome represent subsequent circuit inputs. In the first row of these columns in the place "circuit input no. x", the number of the gate to which input the given circu ...
DC Circuits
... Junction Rule – conservation of charge At any junction, the sum of the currents entering the junction must equal the sum of all the currents leaving the junction ...
... Junction Rule – conservation of charge At any junction, the sum of the currents entering the junction must equal the sum of all the currents leaving the junction ...
Electrical Fundamentals
... • Starter motor—200 amps • Amperage like water flowing from faucet • Measured by placing ammeter into current flow ...
... • Starter motor—200 amps • Amperage like water flowing from faucet • Measured by placing ammeter into current flow ...
Multiple stage amplifiers
... difference on the input side of the small signal equivalent circuit. • A very useful possibility opens up: Use a FET for one stage and a BJT for the other. Mixed bipolar-FET two-stage combinations try to exploit the smaller input admittance of FETs and the better frequency response and power handlin ...
... difference on the input side of the small signal equivalent circuit. • A very useful possibility opens up: Use a FET for one stage and a BJT for the other. Mixed bipolar-FET two-stage combinations try to exploit the smaller input admittance of FETs and the better frequency response and power handlin ...
“The CMOS Inverter” as a comparator in ADC designs
... We next introduce a modification of the TIQ design process, in which basically the both transistor channel widths are allowed to change at the same time to obtain the closest threshold point to the desired one. This leads to a maximum achievable resolution level of 8-bits. The new design methodology ...
... We next introduce a modification of the TIQ design process, in which basically the both transistor channel widths are allowed to change at the same time to obtain the closest threshold point to the desired one. This leads to a maximum achievable resolution level of 8-bits. The new design methodology ...
“The CMOS Inverter” as a comparator in ADC designs
... We next introduce a modification of the TIQ design process, in which basically the both transistor channel widths are allowed to change at the same time to obtain the closest threshold point to the desired one. This leads to a maximum achievable resolution level of 8-bits. The new design methodology ...
... We next introduce a modification of the TIQ design process, in which basically the both transistor channel widths are allowed to change at the same time to obtain the closest threshold point to the desired one. This leads to a maximum achievable resolution level of 8-bits. The new design methodology ...
Newport News Shipbuilding Contractor Environmental, Health and
... This section also includes all machine tools, cranes, mobile equipment, utility equipment, test equipment and analyzing equipment. This section is applicable to all electrical installations, modification, preventive maintenance and repairs. ...
... This section also includes all machine tools, cranes, mobile equipment, utility equipment, test equipment and analyzing equipment. This section is applicable to all electrical installations, modification, preventive maintenance and repairs. ...
CHAPTER 3: SiGe MONOLITHIC TECHNOLOGIES
... avalanche noise. Finally, inductors were modelled consisting of a series inductance and frequency dependent series resistance derived from the inductor Q-factor which was assumed constant over frequency within the band of interest. ...
... avalanche noise. Finally, inductors were modelled consisting of a series inductance and frequency dependent series resistance derived from the inductor Q-factor which was assumed constant over frequency within the band of interest. ...
Lecture 15 Chapter 28 Circuits
... • Kirchhoff’s junction rule (or current law) – – From conservation of charge – Sum of currents entering a junction is equal to sum of currents leaving that junction ...
... • Kirchhoff’s junction rule (or current law) – – From conservation of charge – Sum of currents entering a junction is equal to sum of currents leaving that junction ...
Practical Method to Determine Additional Load Losses due to
... level is very low. The short circuit test is performed at the relevant harmonic frequencies. It is important that the transformer is brought to its rated operational temperature first, since the resistances are temperature dependent. In particular the resistance of the foil windings often has a high ...
... level is very low. The short circuit test is performed at the relevant harmonic frequencies. It is important that the transformer is brought to its rated operational temperature first, since the resistances are temperature dependent. In particular the resistance of the foil windings often has a high ...
Levitating LED Light
... in parallel and a 74.5µH antenna yielding a transmission frequency of approximately 100KHz. Switch J1 is a single pole single throw switch used as an under voltage lockout. It basically allows the power supply to reach full voltage and current sourcing levels before turning the oscillator on. It can ...
... in parallel and a 74.5µH antenna yielding a transmission frequency of approximately 100KHz. Switch J1 is a single pole single throw switch used as an under voltage lockout. It basically allows the power supply to reach full voltage and current sourcing levels before turning the oscillator on. It can ...
Component Electronic Systems (part 3)
... The voltage across each component is known as the voltage drop across the component. This is the amount of voltage ‘used up’ or ‘dropped’ by each. The total voltage dropped in the circuit should equal the total supply voltage as stated in Kirchoff’s second law. ...
... The voltage across each component is known as the voltage drop across the component. This is the amount of voltage ‘used up’ or ‘dropped’ by each. The total voltage dropped in the circuit should equal the total supply voltage as stated in Kirchoff’s second law. ...
Electronic engineering
Electronics engineering, or electronic engineering, is an engineering discipline which utilizes non-linear and active electrical components (such as electron tubes, and semiconductor devices, especially transistors, diodes and integrated circuits) to design electronic circuits, devices and systems. The discipline typically also designs passive electrical components, usually based on printed circuit boards.The term ""electronic engineering"" denotes a broad engineering field that covers subfields such as analog electronics, digital electronics, consumer electronics, embedded systems and power electronics. Electronics engineering deals with implementation of applications, principles and algorithms developed within many related fields, for example solid-state physics, radio engineering, telecommunications, control systems, signal processing, systems engineering, computer engineering, instrumentation engineering, electric power control, robotics, and many others.The Institute of Electrical and Electronics Engineers (IEEE) is one of the most important and influential organizations for electronics engineers.