Comparison - Legacy Power Conversion
... Output power factor of .8 allows use of smaller, lower priced KVA model in many applications. Initial cost per KVA over 20% less on many models Higher AC efficiency at full and partial loads means cost of ownership savings to customer. No additional cost for voltage options ...
... Output power factor of .8 allows use of smaller, lower priced KVA model in many applications. Initial cost per KVA over 20% less on many models Higher AC efficiency at full and partial loads means cost of ownership savings to customer. No additional cost for voltage options ...
Performance Enhanced High Speed UWB GPR System for Buried Rebar Detection Tian Xia, Anbu Venkatachalam, Yu Zhang Dylan Burns, Dryver Huston
... ‐ Real time high speed data acquisition: 8Gsps, 10‐bit; ‐ Quad‐core processor for multi‐thread parallel data acquisition and transmission ; ‐ High pulse repetition frequency (up to 30 KHz) to achieve fine spatial resolution. ...
... ‐ Real time high speed data acquisition: 8Gsps, 10‐bit; ‐ Quad‐core processor for multi‐thread parallel data acquisition and transmission ; ‐ High pulse repetition frequency (up to 30 KHz) to achieve fine spatial resolution. ...
Faculty of Electrical Engineering Three phase permanent magnet
... to produce the correct commutation pulse such that the rotor of the motor can be rotated at desired angle based on stator axis as the reference. The sequence analysis can be used in order to get the commutation sequence by analyzing hall sensor and phase current signals. The speed of BLDC can be con ...
... to produce the correct commutation pulse such that the rotor of the motor can be rotated at desired angle based on stator axis as the reference. The sequence analysis can be used in order to get the commutation sequence by analyzing hall sensor and phase current signals. The speed of BLDC can be con ...
BDTIC
... the turn off propagation delay time. The PX3519 is also capable to drive the two external MOSFETs both in off state. When the PWM signal enters in the shut down window or tri-state (typically between 1.2V and 2.0V) after the shut down hold off time both MOSFETs are switched off. This feature is usef ...
... the turn off propagation delay time. The PX3519 is also capable to drive the two external MOSFETs both in off state. When the PWM signal enters in the shut down window or tri-state (typically between 1.2V and 2.0V) after the shut down hold off time both MOSFETs are switched off. This feature is usef ...
Power Converters for Industrial Power Supply System Power Electronics & Automation
... • AC Input Voltage: Up to 220kV-3 Ph., 50 or 60 Hz • DC Output Voltage: Up to 1500V • DC Output Current: Up to 160kA in only one Rectifier Cubicle • Modular Design: Flexible solutions • Control: ±0,5% standard accuracy Digital Current Regulation by: - Thyristor phase firing delay - IGBT switching co ...
... • AC Input Voltage: Up to 220kV-3 Ph., 50 or 60 Hz • DC Output Voltage: Up to 1500V • DC Output Current: Up to 160kA in only one Rectifier Cubicle • Modular Design: Flexible solutions • Control: ±0,5% standard accuracy Digital Current Regulation by: - Thyristor phase firing delay - IGBT switching co ...
tach model research paper
... negative feedback should be able to maintain an instructed operation even when the operating process is affected by some form of disturbance. Feedback characteristics comprise the majority of control system design [1]. The most basic form of feedback is linear. Linear feedback applies a percentage o ...
... negative feedback should be able to maintain an instructed operation even when the operating process is affected by some form of disturbance. Feedback characteristics comprise the majority of control system design [1]. The most basic form of feedback is linear. Linear feedback applies a percentage o ...
AN ELECTRONICALLY ISOLATED 12
... high input current distortion. The 12-pulse and 18-pulse techniques used to reduce input current harmonics are popular because of their simplicity but are bulky and expensive. Autotransformer techniques require additional external magnetic components that are bulky and add to the cost of the system. ...
... high input current distortion. The 12-pulse and 18-pulse techniques used to reduce input current harmonics are popular because of their simplicity but are bulky and expensive. Autotransformer techniques require additional external magnetic components that are bulky and add to the cost of the system. ...
Jordan University of Science and Technology Abstract: Authors: Low
... Abdoul Rjoub, Ali Shatnawi ...
... Abdoul Rjoub, Ali Shatnawi ...
Fixed Polarity, Reversible Polarity, Four Quadrant Operation…A
... Quadrants Two and Four are the characteristic operating parameters of a load where power is being absorbed from the output. This realm is typically not a functional capability of Spellman’s standard DC high voltage power supplies. Many of Spellman’s power supplies do have the ability to reverse the ...
... Quadrants Two and Four are the characteristic operating parameters of a load where power is being absorbed from the output. This realm is typically not a functional capability of Spellman’s standard DC high voltage power supplies. Many of Spellman’s power supplies do have the ability to reverse the ...
******* 1
... The Dvm is based on the measurement of time that takes for a linear ramp voltage to rise from zero volt to the level of the input voltage . (or the decrees from the level of the input voltage to zero volt ) The resultant time is measured with an electronic time interval counter , where this count is ...
... The Dvm is based on the measurement of time that takes for a linear ramp voltage to rise from zero volt to the level of the input voltage . (or the decrees from the level of the input voltage to zero volt ) The resultant time is measured with an electronic time interval counter , where this count is ...
universitetet i oslo
... 4 c ) How large is the current drawn from the battery V1 ? 4 d ) If IC = 2 mA. What is the voltage across the transistor (Collector – emitter) VCE? 4 e ) If ICQ = 1,5 mA – what is the transconductance - gm in this transistor? 4 f ) What voltage gain do we have ? AV = (Vout / Vin) 4 g ) We remove the ...
... 4 c ) How large is the current drawn from the battery V1 ? 4 d ) If IC = 2 mA. What is the voltage across the transistor (Collector – emitter) VCE? 4 e ) If ICQ = 1,5 mA – what is the transconductance - gm in this transistor? 4 f ) What voltage gain do we have ? AV = (Vout / Vin) 4 g ) We remove the ...
Critical Design Review, Senior Design II Presentation
... – Common interfaces that the public has seen before – Provide the most commonly used output voltages ...
... – Common interfaces that the public has seen before – Provide the most commonly used output voltages ...
code Description Technical specifications DL 2309B SPEED
... Didactic equipment: electronic frequency converter for the open and closed loop speed regulation of a threephase induction motor. Potentiometers for speed setting and acceleration and deceleration ramps. Reversal in the direction of rotation. Technical features: Power: 4 kW - Nominal current: 9 A -O ...
... Didactic equipment: electronic frequency converter for the open and closed loop speed regulation of a threephase induction motor. Potentiometers for speed setting and acceleration and deceleration ramps. Reversal in the direction of rotation. Technical features: Power: 4 kW - Nominal current: 9 A -O ...
Ground-Reference Popless Stereo Headphone Driver
... portable equipment where board space is limited. The G1412 uses the dual external power supplies PVDD/NVDD to produce a ground-reference output, eliminating the need for large DC-blocking capacitors, saving cost, board space, and component height. The G1412 is a dual channel, low voltage, low power, ...
... portable equipment where board space is limited. The G1412 uses the dual external power supplies PVDD/NVDD to produce a ground-reference output, eliminating the need for large DC-blocking capacitors, saving cost, board space, and component height. The G1412 is a dual channel, low voltage, low power, ...
Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.