ETA1035 1 - ETA Solutions
... 3W, 0.85V Startup Voltage, Synchronous Step-Up Converter with Real-Shutdown and Short-Circuit Protection DESCRIPTION ...
... 3W, 0.85V Startup Voltage, Synchronous Step-Up Converter with Real-Shutdown and Short-Circuit Protection DESCRIPTION ...
2011/12 - CSM2044 - Electrical Energy Conversion and Transport
... Hysteresis loop, Hysteresis loss, Hysteresis loss caused by rotation, Eddy currents, Eddy currents in a stationary iron core, eddy-current losses in a revolving core, Current in an inductor. Week 3 DC Machines: Series generator, Shunt generator, Compound generator, Separately excited generator, Impr ...
... Hysteresis loop, Hysteresis loss, Hysteresis loss caused by rotation, Eddy currents, Eddy currents in a stationary iron core, eddy-current losses in a revolving core, Current in an inductor. Week 3 DC Machines: Series generator, Shunt generator, Compound generator, Separately excited generator, Impr ...
新加坡南洋理工大學羅方林教授演講AC/AC Converters, Sub
... The matrix converter is an array of power semiconductor switches that connects directly the three-phase AC source to the three-phase load. It can convert fixed voltage and fixed frequency AC power to variable voltage and variable frequency AC power directly without DC link and bulk energy storage co ...
... The matrix converter is an array of power semiconductor switches that connects directly the three-phase AC source to the three-phase load. It can convert fixed voltage and fixed frequency AC power to variable voltage and variable frequency AC power directly without DC link and bulk energy storage co ...
ELECTRIC MOTOR
... Effective voltage can be varied by inserting a series resistor or by an electronicallycontrolled switching device made of thyristors,transistors, or, historically, mercury arc rectifiers. In a circuit known as a chopper, the average voltage applied to the motor is varied by switching the supply volt ...
... Effective voltage can be varied by inserting a series resistor or by an electronicallycontrolled switching device made of thyristors,transistors, or, historically, mercury arc rectifiers. In a circuit known as a chopper, the average voltage applied to the motor is varied by switching the supply volt ...
0th ppt
... series transformer even for three-phase low-voltage up to 480-V applications because the transformer operates at the line frequency. This project discusses the control and performance of a low-voltage DVR using a high-frequency isolated dc–dc converter. The highfrequency transformer in the dc–dc con ...
... series transformer even for three-phase low-voltage up to 480-V applications because the transformer operates at the line frequency. This project discusses the control and performance of a low-voltage DVR using a high-frequency isolated dc–dc converter. The highfrequency transformer in the dc–dc con ...
Power Quality Terminology
... Outage. A complete loss of power lasting from several milliseconds to several hours. Outages affect all electrical equipment, but some particularly sensitive equipment may be disrupted by outages as short as 15 seconds. Overvoltage or undervoltage. Abnormally high or low voltage conditions lasting f ...
... Outage. A complete loss of power lasting from several milliseconds to several hours. Outages affect all electrical equipment, but some particularly sensitive equipment may be disrupted by outages as short as 15 seconds. Overvoltage or undervoltage. Abnormally high or low voltage conditions lasting f ...
4 Parallel Operation of Synchronous Generators
... phase sift and voltage and frequency differences between the generator and the 3-phase line /2, p.275/. The bulbs should be placed in a triangle for better visualising the ...
... phase sift and voltage and frequency differences between the generator and the 3-phase line /2, p.275/. The bulbs should be placed in a triangle for better visualising the ...
MOH Goat Autonomous Operation
... The more basic Basics… • Torque “twisting effort” – EG: shaft turning, force at the end of an arm, force at the circumference of wheel… “pushing/pulling strength” – Unlimited torque available through any motor with appropriate transmission ...
... The more basic Basics… • Torque “twisting effort” – EG: shaft turning, force at the end of an arm, force at the circumference of wheel… “pushing/pulling strength” – Unlimited torque available through any motor with appropriate transmission ...
LRS-100 series
... Industrial automation machinery Industrial control system Mechanical and electrical equipment Electronic instruments, equipments or apparatus ...
... Industrial automation machinery Industrial control system Mechanical and electrical equipment Electronic instruments, equipments or apparatus ...
Lab 3
... Hold the motor carefully so you will not be hit by the fan blades. Start with Vin = 1 V and gradually increase Vin until the motor begins to turn. You might need to give the fan blades a small push to get it going. Be careful not to increase the voltage more than you need; the small resistors will d ...
... Hold the motor carefully so you will not be hit by the fan blades. Start with Vin = 1 V and gradually increase Vin until the motor begins to turn. You might need to give the fan blades a small push to get it going. Be careful not to increase the voltage more than you need; the small resistors will d ...
Brushless Motors
... apply power to the circuit. Adjust R1 to obtain a steady speed of 3000 rpm. Obtain printouts of the voltages between points A, B, C, and chassis ground; also obtain printouts of the A-to-B and A-to-C line-to-line voltages. In both cases, note the relative time displacements and magnitudes of the wav ...
... apply power to the circuit. Adjust R1 to obtain a steady speed of 3000 rpm. Obtain printouts of the voltages between points A, B, C, and chassis ground; also obtain printouts of the A-to-B and A-to-C line-to-line voltages. In both cases, note the relative time displacements and magnitudes of the wav ...
Control Theory 1 - School of Computer Science, University of
... Understand what control theory is See why it’s useful A little of the maths How to apply it to simple mobile robots ...
... Understand what control theory is See why it’s useful A little of the maths How to apply it to simple mobile robots ...
cuk_converter
... (PMBLDCM) drives are being employed in many variable speed applications due to their high efficiency, silent operation, compact size, high reliability, ease of control, and low maintenance requirements. These drives have power quality problems and poor power factor at input AC mains. Solid-state swi ...
... (PMBLDCM) drives are being employed in many variable speed applications due to their high efficiency, silent operation, compact size, high reliability, ease of control, and low maintenance requirements. These drives have power quality problems and poor power factor at input AC mains. Solid-state swi ...
Low Voltage and Medium Voltage Variable Frequency Drives
... cool to reduce the requirements for air-conditioning system. Heat loss produced by air cool drives is typically 2% KW/HP rating, namely, for example, for 2500 HP rating the heat loss is 50 KW. All variable frequency drives manufactured today produce at least some harmonic current and voltage, which ...
... cool to reduce the requirements for air-conditioning system. Heat loss produced by air cool drives is typically 2% KW/HP rating, namely, for example, for 2500 HP rating the heat loss is 50 KW. All variable frequency drives manufactured today produce at least some harmonic current and voltage, which ...
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.