Speed control of wound rotor induction motors by AC regulator
... applications (MW range), thyristor based controllers are prefened due to the limitations of MOSFET/ IGBT based high power controllers. Ac regulators are extensively used for soft starting, speed control and loss minimization[l]. Generally the schemes used do not provide all the above requirements. T ...
... applications (MW range), thyristor based controllers are prefened due to the limitations of MOSFET/ IGBT based high power controllers. Ac regulators are extensively used for soft starting, speed control and loss minimization[l]. Generally the schemes used do not provide all the above requirements. T ...
this PDF file
... Energy is the most important necessity in today’s world, its need is escalating , if emphasis is laid on the nonrenewable energy generation in large scale then sustaining the growing energy demand is possible. The PEMFC is one safe, clean, economical, better technical efficiency and environmental fr ...
... Energy is the most important necessity in today’s world, its need is escalating , if emphasis is laid on the nonrenewable energy generation in large scale then sustaining the growing energy demand is possible. The PEMFC is one safe, clean, economical, better technical efficiency and environmental fr ...
VDS(on), VCE(sat) Measurement
... seems easy at first glance, but due to the difference between off-state voltage (400V to 1000V) and onstate saturation voltage (some hundreds of mV to some Volts) and the necessity to keep good resolution, the oscilloscope amplifier input is over driven, causing distortion of the signal. For the pur ...
... seems easy at first glance, but due to the difference between off-state voltage (400V to 1000V) and onstate saturation voltage (some hundreds of mV to some Volts) and the necessity to keep good resolution, the oscilloscope amplifier input is over driven, causing distortion of the signal. For the pur ...
ee221_9
... A phasor analysis of a circuit only provides a description of voltage and current steady-state behavior. When the source waveform changes at some time t0, a transient response is produced, which dies out over a period of time leaving the new steady state behavior. The circuit’s differential equation ...
... A phasor analysis of a circuit only provides a description of voltage and current steady-state behavior. When the source waveform changes at some time t0, a transient response is produced, which dies out over a period of time leaving the new steady state behavior. The circuit’s differential equation ...
Grid Interconnection of Renewable Energy Sources and
... rate of fossil fuels as well as supplying energy to remote rural areas, without harming the environment. In this paper RES are integrated at distribution level is termed as distributed generation (DG).A multi-level converters [2] are used for conversion of power to standard bus voltage (AC or DC) an ...
... rate of fossil fuels as well as supplying energy to remote rural areas, without harming the environment. In this paper RES are integrated at distribution level is termed as distributed generation (DG).A multi-level converters [2] are used for conversion of power to standard bus voltage (AC or DC) an ...
Alternating Current - Happy Physics With Mineesh Gulati
... The voltage across a resistor R is in phase with the current. The voltage across an inductor L leads the current by 90°(Φ=+90°), while the voltage across capacitor C lags the current by 90°(Φ=-90°) . The voltage amplitude across each type of device is proportional to the current amplitude I. An ind ...
... The voltage across a resistor R is in phase with the current. The voltage across an inductor L leads the current by 90°(Φ=+90°), while the voltage across capacitor C lags the current by 90°(Φ=-90°) . The voltage amplitude across each type of device is proportional to the current amplitude I. An ind ...
P1000 Mechanical Specification Submittal
... converted to a sine-coded, variable frequency output, which provides optimum speed control of any conventional squirrel cage induction motor. The use of IGBTs (Insulated Gate Bipolar Transistors), with a carrier frequency range of 1 kHz to 15 kHz, permits quiet motor operation. This drive has one co ...
... converted to a sine-coded, variable frequency output, which provides optimum speed control of any conventional squirrel cage induction motor. The use of IGBTs (Insulated Gate Bipolar Transistors), with a carrier frequency range of 1 kHz to 15 kHz, permits quiet motor operation. This drive has one co ...
Low-Power and High Speed High-to-Low Level Shifter
... management techniques which will assure overall low-power and high speed performance. Various power reduction methodologies are currently known. One of most widely used techniques is supply voltage scaling for separate IC blocks. Supply voltage reduction will cause a decrease of overall power consum ...
... management techniques which will assure overall low-power and high speed performance. Various power reduction methodologies are currently known. One of most widely used techniques is supply voltage scaling for separate IC blocks. Supply voltage reduction will cause a decrease of overall power consum ...
Things you should know about LED`s and
... 300Ω (3V/10mA). Note: You don't need to know the exact LED voltage drop of the diode. If it's not bright enough lower the current limiting resistor. The maximum DC current should be GND listed in the data sheet. You may be able to pulse the LED with 10 times its rated current if the duty cycle is lo ...
... 300Ω (3V/10mA). Note: You don't need to know the exact LED voltage drop of the diode. If it's not bright enough lower the current limiting resistor. The maximum DC current should be GND listed in the data sheet. You may be able to pulse the LED with 10 times its rated current if the duty cycle is lo ...
3-Phase DC Brushless Motor Pre-Drivers Technical Information
... Speed control circuit is shown as following figure. This circuit consists of input buffer, Level shifter and Speed control amplifier. Motor speed can be changed by “speed set” VR. VR1 is trimmer for final stage gain for stability. NJM13403 is quad single supply general-purpose operational amplifier. ...
... Speed control circuit is shown as following figure. This circuit consists of input buffer, Level shifter and Speed control amplifier. Motor speed can be changed by “speed set” VR. VR1 is trimmer for final stage gain for stability. NJM13403 is quad single supply general-purpose operational amplifier. ...
Lab-12 Stephan-Boltzmann Law
... Measure how the current through an electric light bulb varies as the applied voltage is changed. This will allow you to establish Stephan's Law for Black Body Radiation. Introduction: When an electric current flows through the filament in a light bulb the filament heats up. The filament loses heat i ...
... Measure how the current through an electric light bulb varies as the applied voltage is changed. This will allow you to establish Stephan's Law for Black Body Radiation. Introduction: When an electric current flows through the filament in a light bulb the filament heats up. The filament loses heat i ...
PEP01-5841 - STMicroelectronics
... Leakage current @ VRM Stand-off voltage Clamping voltage Peak pulse current ...
... Leakage current @ VRM Stand-off voltage Clamping voltage Peak pulse current ...
Transformer Notes
... Paralleling of transformers Say we had a situation as depicted such. A plant demanded a load of 250kVA. To account for this load the electricity commission installed a 300kVA transformer at the location of the plant, which served well to supply power to the plant. But say in the future the planted ...
... Paralleling of transformers Say we had a situation as depicted such. A plant demanded a load of 250kVA. To account for this load the electricity commission installed a 300kVA transformer at the location of the plant, which served well to supply power to the plant. But say in the future the planted ...