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Profile Documents Logout
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Document
Document

... AUIR2085S Self-oscillating Halfbridge Driver The AUIR2085S is a rugged, general purpose high speed selfoscillating half bridge driver which was specifically designed, tested and qualified for use in harsh environments such as automotive under-the-hood applications. Proprietary HVIC technology enable ...
PPT
PPT

G047033138
G047033138

... with reduced size of magnetics and filters, a high switching frequency is used; however, the switching frequency (fs) is limited by the switching device used, operating power level and switching losses of the device. Metal oxide field effect transistors (MOSFETs) are used as the switching device for ...
section 15172
section 15172

Spark Tester for Thermoplastic Waterstop Welds
Spark Tester for Thermoplastic Waterstop Welds

HIGH SPEED INDUCTION GENERATOR FOR APPLICATIONS IN
HIGH SPEED INDUCTION GENERATOR FOR APPLICATIONS IN

Direct Power Control of a PWM Rectifier Fed Autonomous Induction
Direct Power Control of a PWM Rectifier Fed Autonomous Induction

... increasing the attention given to renewable energy. The wind is a renewable energy which is clean and abundant resource. Induction generators are widely used for wind powered electric generation. For the stand-alone operating, the squirrel cage induction machine is preferred thanks to its robustness ...
Progress in On-Line Measurement of PD in G.C. Stone I. Culbert
Progress in On-Line Measurement of PD in G.C. Stone I. Culbert

... ns or longer. This paper describes the technical issues in online PD detection on motors fed by VS-PWM drives and gives an example of one system that detects the PD successfully. ...
harmonic current compensation in self excited induction generator
harmonic current compensation in self excited induction generator

Dec 2002 A Simple Solution to Low Noise, Isolated Power Conversion
Dec 2002 A Simple Solution to Low Noise, Isolated Power Conversion

moga tuned pi-fuzzy logic control for 3 phase induction motor with
moga tuned pi-fuzzy logic control for 3 phase induction motor with

... controller has simple structure and also due to its modest fuzzy rule in rule- base is relatively easy for implementation. The control is performed by Matlab/Simulink software. The simulation test results have been satisfactory in simulation results and demonstrated to confirm the performance of the ...
Low voltage fast-switching NPN power transistor
Low voltage fast-switching NPN power transistor

... Revision history Table 5. ...
phantom500
phantom500

... • ATX12V version 2.0 compliant • Fanless operation for absolutely silent computing. Three user selectable fan kick-in points for quiet computing under higher loads • Specially designed internal heatsinks and chassis heatsink for maximum heat dissipation • ATX12V v2.0 compliance and ultra-high-effici ...
Minimising of electromagnetic torque ripple of reluctance stepper
Minimising of electromagnetic torque ripple of reluctance stepper

... results of reluctance stepper motors with a Torque Distribution Function in order to reduce torque ripple [1]. This control system can be easily fitted into existing systems, without any major modifications. High performance motor drive applications require smooth torque with minimum torque ripple. ...
MAR2100 | Maradin MEMS Drive & Control Datasheet
MAR2100 | Maradin MEMS Drive & Control Datasheet

... The horizontal electro-static scan also provides the capacitance change when the angular position of the mirror changes around the x-axis. This capacitance value is converted to voltage by X sense that serves as the reference clock for the PLL. The PLL locks to the MEMS mirror resonance frequency an ...
Electric Current
Electric Current

... applies to both permanent and temporary CTs. A small unbalance in the supply voltage can result in a large current unbalance among the three phases. As a rule, a 1% unbalance in voltage will result in roughly a 7% unbalance in current. Even in the presence of a balanced power supply, there may be cu ...
Document
Document

... part (a) : It was underexcited, absorbing reactive power. part (b) : It increased. part (c) : The answers are the same. ...
Start-stop starter motor SC70
Start-stop starter motor SC70

... Global demands on a robust starter motor Stricter CO₂ legislation is fueling the continual market growth of start-stop technology. One in two cars produced in Europe today is fitted with a start-stop system. Designed to offer enhanced start dynamics while still being lightweight, the SC70 has been o ...
GENERATOR DC / AC 60 HZ, SPEED = …3600 RPM
GENERATOR DC / AC 60 HZ, SPEED = …3600 RPM

... ** External case drain line may be required on some units refer to specific model number. When external case drain is required it should be unobstructed direct return to reservoir with a minimum I.D. no less than that of case drain port on generator motor. FOR SPECIFIC INSTALLATION RECOMMENDATIONS C ...
AMP-RF-2 Notification Features
AMP-RF-2 Notification Features

Binary-Weighted Current Mode Digital-to
Binary-Weighted Current Mode Digital-to

... D/A Converter The D/A converter is done in the way that: ...
Multi-Technology Fault Identification Case Study
Multi-Technology Fault Identification Case Study

... motor starter were operating with an above alarm level temperature differential. A thermographic scan of the motor revealed that the housing was operating hotter than normal, indicating a possible issue within the circuit. Figure 5 is an infrared image taken of the motor soon after the current imbal ...
Using an Oscilloscope to Observe Rectification
Using an Oscilloscope to Observe Rectification

... Rectification is the name given to the process where an a.c. voltage source is switched on and off repeatedly so that current flows only one way through a load. A circuit that performs this function is called a rectifier circuit. Most rectifiers are built using diodes. Rectifiers are used in order t ...
Motor Trouble-Shooting Chart
Motor Trouble-Shooting Chart

... Ensure that motor was not damaged in shipment. Frame damage may not be repairable. If you cannot see physical damage, inspect the motor’s rotor and stator for strike marks. If signs of rubbing are present, the motor should be replaced. Sometimes simply disassembling and reassembling motor eliminates ...
AC current sources GI1K series
AC current sources GI1K series

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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.
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