Sliding Mode Controller for Four Leg Shunt Active Power Filter to
... distribution systems and the amplitude of the zero sequence current is not reduced. To remedy these problems it will be necessary to provide a four leg shunt active power filter [11–14]. The four leg shunt active power filter topology, Fig.1, can reduce zero sequence current and the harmonic current ...
... distribution systems and the amplitude of the zero sequence current is not reduced. To remedy these problems it will be necessary to provide a four leg shunt active power filter [11–14]. The four leg shunt active power filter topology, Fig.1, can reduce zero sequence current and the harmonic current ...
Synergetic Control of Power Converters for Pulse Current Charging
... disturbed by the step load variation, reaching a new steady-state value that is different from the desired 1 A reference. This is because, when a step load variation occurs, the resistance of the load changes suddenly whereas the model parameters in the control law do not change consequently. More s ...
... disturbed by the step load variation, reaching a new steady-state value that is different from the desired 1 A reference. This is because, when a step load variation occurs, the resistance of the load changes suddenly whereas the model parameters in the control law do not change consequently. More s ...
Aalborg Universitet
... As previously mentioned, the control framework of a DC MG consists in general of local and coordinated control levels. In this section a local control level is discussed in detail. Basic functions which include current, voltage and droop control are reviewed. Due to limited space and in an attempt t ...
... As previously mentioned, the control framework of a DC MG consists in general of local and coordinated control levels. In this section a local control level is discussed in detail. Basic functions which include current, voltage and droop control are reviewed. Due to limited space and in an attempt t ...
Fuzzy Logic.pdf - 123seminarsonly.com
... back until it is close to the input signal. A PLL operate on the same principle that the quantity feed back and compared is not the amplitude but the phase. VCO adjusts its own frequency until it is equal to that of input sinusoidal signal. At this point the frequency and phase of the signal are in ...
... back until it is close to the input signal. A PLL operate on the same principle that the quantity feed back and compared is not the amplitude but the phase. VCO adjusts its own frequency until it is equal to that of input sinusoidal signal. At this point the frequency and phase of the signal are in ...
Series 7000 Analog Electronic Controls, Selection Guide - Enviro-Tec
... further open. If temperature rises, the valve actuator is positioned in the closed direction. The degree of position change is dependent on the temperature difference from two degrees below setpoint. Proportional electric heat applications use an analog signal to control a voltage to a pulse width m ...
... further open. If temperature rises, the valve actuator is positioned in the closed direction. The degree of position change is dependent on the temperature difference from two degrees below setpoint. Proportional electric heat applications use an analog signal to control a voltage to a pulse width m ...
B280-00030
... • The lower portion of the control is used for operation. The front panel LCD display is used to configure the operating settings for the control. It is also used to display metering, counter information, control parameters, reset alarms, and provide diagnostic information. A sharp, backlit 4 line ...
... • The lower portion of the control is used for operation. The front panel LCD display is used to configure the operating settings for the control. It is also used to display metering, counter information, control parameters, reset alarms, and provide diagnostic information. A sharp, backlit 4 line ...
AC induction - final notes
... The method may increase starting torque while limiting starting current. However, this is an inefficient method and there would be imbalance voltages and currents if the resistances in the rotor circuit are not equal. The increase in resistance does not affect the value of maximum torque but inc ...
... The method may increase starting torque while limiting starting current. However, this is an inefficient method and there would be imbalance voltages and currents if the resistances in the rotor circuit are not equal. The increase in resistance does not affect the value of maximum torque but inc ...
TIIC2015- Solar Golf Cart - TI E2E Community
... Display using a touch screen and microcontroller. The goal of this project was to create an energy efficient golf cart that is capable of running solely on the solar panels and possibly with some help from an external outlet if time is a concern . A Touchscreen Display gave the user many options suc ...
... Display using a touch screen and microcontroller. The goal of this project was to create an energy efficient golf cart that is capable of running solely on the solar panels and possibly with some help from an external outlet if time is a concern . A Touchscreen Display gave the user many options suc ...
723PLUS Digital Control
... NOTICE: This controlling device is intended to be put into service only upon incorporation into a prime mover system that itself has met the requirements of the above Directive and bears the CE mark. ...
... NOTICE: This controlling device is intended to be put into service only upon incorporation into a prime mover system that itself has met the requirements of the above Directive and bears the CE mark. ...
Actuators for Robots
... Do not confuse “servos” with “servo motors” DC motors (brushed or brushless) are also sometimes also referred to as “servo motors” See: http://www.theproductfinder.com/motors/bruser.htm “So when does a motor become a servo motor? There are certain design criteria that are desired when buildi ...
... Do not confuse “servos” with “servo motors” DC motors (brushed or brushless) are also sometimes also referred to as “servo motors” See: http://www.theproductfinder.com/motors/bruser.htm “So when does a motor become a servo motor? There are certain design criteria that are desired when buildi ...
TL494 Pulse-Width-Modulation Control Circuits (Rev. H)
... control comparator has a fixed offset that provides approximately 5% dead time. The on-chip oscillator can be bypassed by terminating RT to the reference output and providing a sawtooth input to CT, or it can drive the common circuits in synchronous multiple-rail power supplies. The uncommitted outp ...
... control comparator has a fixed offset that provides approximately 5% dead time. The on-chip oscillator can be bypassed by terminating RT to the reference output and providing a sawtooth input to CT, or it can drive the common circuits in synchronous multiple-rail power supplies. The uncommitted outp ...
Section 16950 - Douglas Lighting Controls
... loads whenever spaces are occupied. For spaces with multiple occupants a single shut off consistent with the overhead lighting may be used for the area. ...
... loads whenever spaces are occupied. For spaces with multiple occupants a single shut off consistent with the overhead lighting may be used for the area. ...
Aalborg Universitet Multiagent Based Distributed Control for State-of-Charge Balance of Distributed
... line impedance is very small), it has many benefits to make stage-of-charge (SoC) of DES balanced. As it is well known, it is desirable to maintain the SoC of the battery at a certain range (e.g. between 20% and 80%). Since in this case, the battery has higher efficiency and State-of-Health (SoH) [3 ...
... line impedance is very small), it has many benefits to make stage-of-charge (SoC) of DES balanced. As it is well known, it is desirable to maintain the SoC of the battery at a certain range (e.g. between 20% and 80%). Since in this case, the battery has higher efficiency and State-of-Health (SoH) [3 ...
Microcomputer Control Systems I
... Fig. 2: Examples of Karnaugh maps for 2 to 5 variables. Functional values of the logical function are entered in the Karnaugh map so that to the corresponding field in the map, type 1 (if the function value is equal to 1) or 0 (if the functional value is undefined) for each combination of input vari ...
... Fig. 2: Examples of Karnaugh maps for 2 to 5 variables. Functional values of the logical function are entered in the Karnaugh map so that to the corresponding field in the map, type 1 (if the function value is equal to 1) or 0 (if the functional value is undefined) for each combination of input vari ...
Types of DR Island Systems - IEEE Standards working groups
... Blackstart typically relates to one generator or a small group – situation where there is no power. Easier to do inside a facility than across several customers Full load pickup can be up to 6x normal load May require load control and/or the ability to parallel multiple generators before loa ...
... Blackstart typically relates to one generator or a small group – situation where there is no power. Easier to do inside a facility than across several customers Full load pickup can be up to 6x normal load May require load control and/or the ability to parallel multiple generators before loa ...
Red Lion Model GEMINI 3300 Presettable Batch Counter
... Many times in web type processes it is necessary to scale the input to reflect the desired engineering units. In this application, a plastic bag webbing process is being measured with a 10 pulse LSC sensor (length sensor and one foot circumference wheel). The output of the LSC is the input to the GE ...
... Many times in web type processes it is necessary to scale the input to reflect the desired engineering units. In this application, a plastic bag webbing process is being measured with a 10 pulse LSC sensor (length sensor and one foot circumference wheel). The output of the LSC is the input to the GE ...
Pulse-Width-Modulation DC Chopper using LabView Software
... structure1 compared with fixed triangle wave within UPWMSQU VI sub icon (According to the fixed amplitude values of triangle wave changing the square wave amplitude values will increase the modulation index then the duty cycle (K) will increase also the cycle average and RMS values will increase). T ...
... structure1 compared with fixed triangle wave within UPWMSQU VI sub icon (According to the fixed amplitude values of triangle wave changing the square wave amplitude values will increase the modulation index then the duty cycle (K) will increase also the cycle average and RMS values will increase). T ...
Microelectromechanical Devices
... Two regions of operation - constant torque and constant power. ...
... Two regions of operation - constant torque and constant power. ...
21-1222 Copeland 17-1234 1 7 - 1 2 3 4 Application Engineering Bulletin
... stable pressure control, but problems still exist if conditions are such that the last fan can cycle on and off. Better modulation can be obtained by varying the fan motor speed, and this is now possible with available solid state controls and suitable motors. However even if the condenser fan is co ...
... stable pressure control, but problems still exist if conditions are such that the last fan can cycle on and off. Better modulation can be obtained by varying the fan motor speed, and this is now possible with available solid state controls and suitable motors. However even if the condenser fan is co ...
Control theory
Control theory is an interdisciplinary branch of engineering and mathematics that deals with the behavior of dynamical systems with inputs, and how their behavior is modified by feedback. The usual objective of control theory is to control a system, often called the plant, so its output follows a desired control signal, called the reference, which may be a fixed or changing value. To do this a controller is designed, which monitors the output and compares it with the reference. The difference between actual and desired output, called the error signal, is applied as feedback to the input of the system, to bring the actual output closer to the reference. Some topics studied in control theory are stability (whether the output will converge to the reference value or oscillate about it), controllability and observability.Extensive use is usually made of a diagrammatic style known as the block diagram. The transfer function, also known as the system function or network function, is a mathematical representation of the relation between the input and output based on the differential equations describing the system.Although a major application of control theory is in control systems engineering, which deals with the design of process control systems for industry, other applications range far beyond this. As the general theory of feedback systems, control theory is useful wherever feedback occurs. A few examples are in physiology, electronics, climate modeling, machine design, ecosystems, navigation, neural networks, predator-prey interaction, gene expression, and production theory.