IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
... In view of unbalanced with the theory of symmetric decomposition for three phase systems, unbalanced grid voltages can be divided into three groups, namely positive, negative, and zero sequence voltages. Similarly, current quantities can also be separated. By disregarding the mutual coupling between ...
... In view of unbalanced with the theory of symmetric decomposition for three phase systems, unbalanced grid voltages can be divided into three groups, namely positive, negative, and zero sequence voltages. Similarly, current quantities can also be separated. By disregarding the mutual coupling between ...
Motor Control Centers - A117 North American IC Catalog
... IntelliCENTER technology are a cost-effective solution to solve even your most complex motor control needs. ...
... IntelliCENTER technology are a cost-effective solution to solve even your most complex motor control needs. ...
Complete PDF Edition (573 KB)
... ron and steel plants have always played a leading role in the development and introduction of new industrial technologies. A number of pioneering process innovations have now reached the stage of practical implementation. These include world “firsts” such as continuous casting strip mills, which lin ...
... ron and steel plants have always played a leading role in the development and introduction of new industrial technologies. A number of pioneering process innovations have now reached the stage of practical implementation. These include world “firsts” such as continuous casting strip mills, which lin ...
The average cost optimality equation
... In recent years, some variants of Lyapunov-like stability conditions have been used in several papers to handle the EAC optimal control problem with unbounded costs for MCPs on Borel spaces ([4], [5], [12], [13]) and, more recently, for semi-Markov control processes ([14], [16], [21]), as well as fo ...
... In recent years, some variants of Lyapunov-like stability conditions have been used in several papers to handle the EAC optimal control problem with unbounded costs for MCPs on Borel spaces ([4], [5], [12], [13]) and, more recently, for semi-Markov control processes ([14], [16], [21]), as well as fo ...
DA-500 - MCM Electronics
... The DA-500 Drive-Alert is a multi-purpose, solid-state electronic alarm system designed to detect vehicle traffic in driveways, farm lanes, intersections and any areas where knowledge of vehicle movement is desired. This system does not use a PIR sensor. Thus, these systems DO NOT have the false ala ...
... The DA-500 Drive-Alert is a multi-purpose, solid-state electronic alarm system designed to detect vehicle traffic in driveways, farm lanes, intersections and any areas where knowledge of vehicle movement is desired. This system does not use a PIR sensor. Thus, these systems DO NOT have the false ala ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... supply currents (isa, isband isc) and instantaneous reference currents (isar, isbrand iscr) to generate gating pulses to the IGBTs of converter. The controller controls the converter currents to maintain supply currents in a band around the desired reference current values. The hysteresis controller ...
... supply currents (isa, isband isc) and instantaneous reference currents (isar, isbrand iscr) to generate gating pulses to the IGBTs of converter. The controller controls the converter currents to maintain supply currents in a band around the desired reference current values. The hysteresis controller ...
Digital Electronics - Dr. Imtiaz Hussain
... • The processor module contains the PLC’s microprocessor, its supporting circuitry, and its memory system. • The main function of the microprocessor is to analyze data coming from field sensors through input modules, make decisions based on the user’s defined control program and return signal back t ...
... • The processor module contains the PLC’s microprocessor, its supporting circuitry, and its memory system. • The main function of the microprocessor is to analyze data coming from field sensors through input modules, make decisions based on the user’s defined control program and return signal back t ...
Fuzzy Logic – Based Approach for Adaptive Hysteresis Band
... methods require large memory, computation power and the results provided during the transient condition may be imprecise [4]. On the other hand, the time domain methods require less calculations and are widely followed for computing the reference current. The two mostly used time domain methods are ...
... methods require large memory, computation power and the results provided during the transient condition may be imprecise [4]. On the other hand, the time domain methods require less calculations and are widely followed for computing the reference current. The two mostly used time domain methods are ...
MicroLogix - Literature Library
... In a perfect world you would always know what’s behind the next door. In the world of automation, the MicroLogix 1500 controller can help you open up new possibilities and get you to where you want to go with ease. As the most powerful member of the MicroLogix family you’ll get unmatched performance ...
... In a perfect world you would always know what’s behind the next door. In the world of automation, the MicroLogix 1500 controller can help you open up new possibilities and get you to where you want to go with ease. As the most powerful member of the MicroLogix family you’ll get unmatched performance ...
Aalborg Universitet
... amplitude of the injected current can be very high. Thus, compensation will occupy a large amount of the capacity and may limit the DG capability to supply active and reactive power. A synchronous (dq) reference frame control method for compensation of voltage unbalance in a microgrid is presented i ...
... amplitude of the injected current can be very high. Thus, compensation will occupy a large amount of the capacity and may limit the DG capability to supply active and reactive power. A synchronous (dq) reference frame control method for compensation of voltage unbalance in a microgrid is presented i ...
Preventive maintenance
... To make or break the circuit under normal ( In) or fault conditions (overload and Short-circuit ) Contacts get worn during each mechanical and electrical open / close operation and after short circuit ( maxi 2 cycles at Icu) Worn contacts will result in : over heating of the breaker ( increa ...
... To make or break the circuit under normal ( In) or fault conditions (overload and Short-circuit ) Contacts get worn during each mechanical and electrical open / close operation and after short circuit ( maxi 2 cycles at Icu) Worn contacts will result in : over heating of the breaker ( increa ...
Aalborg Universitet PMSM Drive Systems
... current i.e. torque control loop and an outer speed control loop. In order to obtain stability the bandwidth of the current control loop must be limited according to the sampling frequency of the system. For the same reason the control action of the control loops is decoupled to further reduce the s ...
... current i.e. torque control loop and an outer speed control loop. In order to obtain stability the bandwidth of the current control loop must be limited according to the sampling frequency of the system. For the same reason the control action of the control loops is decoupled to further reduce the s ...
Controller based Temperature Monitoring System
... that there is a 0V for 0oC and 1V for 100oC [4]. The microcontroller has 10 bit of A/D converter which gives equivalent digital 10 bits of output which need to convert into appropriate temperature using some mathematical calculation as given below [1]. Here reference voltage taken as 5V which is sam ...
... that there is a 0V for 0oC and 1V for 100oC [4]. The microcontroller has 10 bit of A/D converter which gives equivalent digital 10 bits of output which need to convert into appropriate temperature using some mathematical calculation as given below [1]. Here reference voltage taken as 5V which is sam ...
A Luenberger-sliding mode observer with rotor
... control algorithm has enabled them to have improved response time. The costs can be reduced further compared to other electric drive systems with the sensorless control of IMs (without velocity feedback). Despite the advantage of reduced costs, the complicated structure of IMs, involving parameter v ...
... control algorithm has enabled them to have improved response time. The costs can be reduced further compared to other electric drive systems with the sensorless control of IMs (without velocity feedback). Despite the advantage of reduced costs, the complicated structure of IMs, involving parameter v ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... systems are not amenable to conventional modeling approaches due to the lack of precise, formal knowledge about the system, due to strongly nonlinear behavior, due to the high degree of uncertainty, or due to the time varying characteristics. To improve the efficiency of DPFC in the system an intell ...
... systems are not amenable to conventional modeling approaches due to the lack of precise, formal knowledge about the system, due to strongly nonlinear behavior, due to the high degree of uncertainty, or due to the time varying characteristics. To improve the efficiency of DPFC in the system an intell ...
Section #26 29 03
... Illuminated, Standard duty. Operator recessed mushroom type, as indicated, with 1-NO and 1-NC auxiliary contacts rated as indicated. Labels as indicated. Stop pushbuttons coloured red, provision for padlocking in depressed position and labelled "emergency ...
... Illuminated, Standard duty. Operator recessed mushroom type, as indicated, with 1-NO and 1-NC auxiliary contacts rated as indicated. Labels as indicated. Stop pushbuttons coloured red, provision for padlocking in depressed position and labelled "emergency ...
P35-4215-0 GaAs MMIC SPDT REFLECTIVE/NON
... MMIC. It is suitable for use in broadband communications and instrumentation applications. The isolated port of the switch can be terminated with either an on-chip 50Ω load or a short-circuit. Control is effected by the application of complimentary 0V and -5V levels to the control lines in accordanc ...
... MMIC. It is suitable for use in broadband communications and instrumentation applications. The isolated port of the switch can be terminated with either an on-chip 50Ω load or a short-circuit. Control is effected by the application of complimentary 0V and -5V levels to the control lines in accordanc ...
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.