PI-Like Fuzzy Logic Direct Torque Control of Permanent Magnet
... Now a days, there are several methods which are used to control the speed and torque of a motor. By choosing a more accurate space voltage vector , more accurate control of torque and flux linkage can be obtained. ...
... Now a days, there are several methods which are used to control the speed and torque of a motor. By choosing a more accurate space voltage vector , more accurate control of torque and flux linkage can be obtained. ...
AVR449: Sinusoidal driving of 3-phase
... rotor and load creates a mechanical low pass filter. Choosing the PWM switching frequency sufficiently high, there will be no noticeable jitter in the rotor speed. Secondly, the currents fed through the windings of even a small motor can be in the range of several amperes. Forcing this current throu ...
... rotor and load creates a mechanical low pass filter. Choosing the PWM switching frequency sufficiently high, there will be no noticeable jitter in the rotor speed. Secondly, the currents fed through the windings of even a small motor can be in the range of several amperes. Forcing this current throu ...
LTC Design Note: High-voltage CMOS amplifier enables high
... unity-gain circuit. No discrete FETs or floating biasing supplies are needed. ...
... unity-gain circuit. No discrete FETs or floating biasing supplies are needed. ...
MIL-STD-883H METHOD 3007.1 LOW LEVEL OUTPUT VOLTAGE 1
... 1. PURPOSE. This method establishes the means for assuring circuit performance to the limits specified in the applicable acquisition document with regard to LOW level output drive which is specified as a maximum value (V OL max) or a minimum value (V OL min). This method applies to digital microelec ...
... 1. PURPOSE. This method establishes the means for assuring circuit performance to the limits specified in the applicable acquisition document with regard to LOW level output drive which is specified as a maximum value (V OL max) or a minimum value (V OL min). This method applies to digital microelec ...
Two threshold control unit for current or voltage input
... analogue current/voltage output as pressure transmitter, PT100 converter, capacitive probe amplifier and level transmitter. The set points of the two thresholds are independent and can be changed using the onboard programming buttons. When the input signal reaches the set point, relay and red LED ch ...
... analogue current/voltage output as pressure transmitter, PT100 converter, capacitive probe amplifier and level transmitter. The set points of the two thresholds are independent and can be changed using the onboard programming buttons. When the input signal reaches the set point, relay and red LED ch ...
SSPA 9.5-10.5-25 DS_SSPA 9.5-10.5-25 DS.qxd
... is 5.5 dB typical at 25ºC. Input VSWR is 2.0:1 maximum. Output VSWR is 2.0:1 maximum. This unit is equipped with Aethercomm's proprietary DC switching circuitry that enables and disables the DC-DC circuitry in 500/600 nSec typical on this unit. Standard features include reverse polarity protection, ...
... is 5.5 dB typical at 25ºC. Input VSWR is 2.0:1 maximum. Output VSWR is 2.0:1 maximum. This unit is equipped with Aethercomm's proprietary DC switching circuitry that enables and disables the DC-DC circuitry in 500/600 nSec typical on this unit. Standard features include reverse polarity protection, ...
Embedded Computer Systems Elec 296
... • In circuits where an input level is being detected, have a pull-up resistor can save the battery power. • In the accompanying diagram of a pull-up resistor, having the switch open allows the logic gate to sense the input voltage level without having to supply the voltage. When the switch is closed ...
... • In circuits where an input level is being detected, have a pull-up resistor can save the battery power. • In the accompanying diagram of a pull-up resistor, having the switch open allows the logic gate to sense the input voltage level without having to supply the voltage. When the switch is closed ...
abstract - Innovetech
... telecommunication and data centers. In this project, the different commutation types of a three-phase buck rectifier with a freewheeling diode are analyzed through experiments using different semiconductor devices. Further, the switching loss of the converter is modeled and calculated for four space ...
... telecommunication and data centers. In this project, the different commutation types of a three-phase buck rectifier with a freewheeling diode are analyzed through experiments using different semiconductor devices. Further, the switching loss of the converter is modeled and calculated for four space ...
Electronics Engineering - Dronacharya College of Engineering
... A receiver is a collection of electronic components and ...
... A receiver is a collection of electronic components and ...
Control Strategy for Power Flow Management in a PV System
... of the converter for different modes of operation has been observed, and near unity power factor has been achieved in both the rectifier and inverter modes. The transient performance of the system for step changes in load and insolation have been also illustrated. The control strategy has been digit ...
... of the converter for different modes of operation has been observed, and near unity power factor has been achieved in both the rectifier and inverter modes. The transient performance of the system for step changes in load and insolation have been also illustrated. The control strategy has been digit ...
Rabbit 3000 - Electromate Industrial Sales Ltd.
... Two Step Registers – enables divide by N Can generate interrupt when counter value matches either/both Match Registers • Match conditions can also be used to synchronize parallel port outputs • Driven by Timer A1, Pclk/2 (default) or Pclk/16 ...
... Two Step Registers – enables divide by N Can generate interrupt when counter value matches either/both Match Registers • Match conditions can also be used to synchronize parallel port outputs • Driven by Timer A1, Pclk/2 (default) or Pclk/16 ...
IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 23, NO. 1
... for high-current slew rates and fast transient response, together with low output voltages, have posed great challenges on voltage regulator (VR) design. For today’s microprocessors, the operational current may exceed 100 A with voltages in the 1 to 1.5 V range, while the slew rate of the transient ...
... for high-current slew rates and fast transient response, together with low output voltages, have posed great challenges on voltage regulator (VR) design. For today’s microprocessors, the operational current may exceed 100 A with voltages in the 1 to 1.5 V range, while the slew rate of the transient ...
SIMULATION OF BUCK-BOOST converter
... converter is shown in figure. From t=0 to t=DT,the converter is in ON state, so the switch S is closed. ...
... converter is shown in figure. From t=0 to t=DT,the converter is in ON state, so the switch S is closed. ...
Total Harmonic Distortion and Effects in Electrical Power Systems
... The formula above shows the calculation for THD on a voltage signal. The end result is a percentage comparing the harmonic components to the fundamental component of a signal. The higher the percentage, the more distortion that is present on the mains signal. The Usual Suspects Harmonics have existe ...
... The formula above shows the calculation for THD on a voltage signal. The end result is a percentage comparing the harmonic components to the fundamental component of a signal. The higher the percentage, the more distortion that is present on the mains signal. The Usual Suspects Harmonics have existe ...
Power supply description
... smoothens the D.C. Output received from this filter is constant until the mains voltage and load is maintained constant. However, if either of the two is varied, D.C. voltage received at this point changes. Therefore a regulator is applied at the output stage. ...
... smoothens the D.C. Output received from this filter is constant until the mains voltage and load is maintained constant. However, if either of the two is varied, D.C. voltage received at this point changes. Therefore a regulator is applied at the output stage. ...
programmable ac power source model 61700 series
... voltage from 0 to 300VAC and it can be set individually for each phase. Users also can set the phase angle from 0° to 360°. These kinds of function make the 61700 series can simulate unbalance 3-phase power. Because of the wide output frequency from 15 to 1200Hz, it is suitable for avionics and mili ...
... voltage from 0 to 300VAC and it can be set individually for each phase. Users also can set the phase angle from 0° to 360°. These kinds of function make the 61700 series can simulate unbalance 3-phase power. Because of the wide output frequency from 15 to 1200Hz, it is suitable for avionics and mili ...
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.