AO21260268
... IPFC on electromechanical oscillations and transmission capacity. This model does not include detailed representations of the power electronics, the measurement system, or the synchronization system. These systems are approximated rather by simple transfer functions that yield a correct representati ...
... IPFC on electromechanical oscillations and transmission capacity. This model does not include detailed representations of the power electronics, the measurement system, or the synchronization system. These systems are approximated rather by simple transfer functions that yield a correct representati ...
L0446166
... III. DIRECT TORQUE AND FLUX CONTROL Direct torque control (DTC) is one method used in variable frequency drives to control the torque (and thus finally the speed) of three-phase AC electric motors. This involves calculating an estimate of the motor's magnetic flux and torque based on the measured vo ...
... III. DIRECT TORQUE AND FLUX CONTROL Direct torque control (DTC) is one method used in variable frequency drives to control the torque (and thus finally the speed) of three-phase AC electric motors. This involves calculating an estimate of the motor's magnetic flux and torque based on the measured vo ...
H45014650
... which is simple and easy to implement is proposed by modifying the above scheme and it works by sensing line currents only [2, 4]. In the recent years, Fuzzy Logic Controllers (FLCs) have generated a good deal of interest in certain applications [5]. The advantages of FLCs over conventional controll ...
... which is simple and easy to implement is proposed by modifying the above scheme and it works by sensing line currents only [2, 4]. In the recent years, Fuzzy Logic Controllers (FLCs) have generated a good deal of interest in certain applications [5]. The advantages of FLCs over conventional controll ...
General Specifications Model UT150L Limit Controller
... Normal mode noise: Min. 40dB (50/60Hz) Common mode noise: Min. 120dB (Min. 90dB for DC V input) Error of reference junction compensation: ±1.5°C (at 15-35°C) ±2.0°C (at 0-50°C) The reference junction compensation cannot be switched off. Applicable standards: Thermocouple and resistance temperature d ...
... Normal mode noise: Min. 40dB (50/60Hz) Common mode noise: Min. 120dB (Min. 90dB for DC V input) Error of reference junction compensation: ±1.5°C (at 15-35°C) ±2.0°C (at 0-50°C) The reference junction compensation cannot be switched off. Applicable standards: Thermocouple and resistance temperature d ...
Power Flow Control of a Doubly Fed induction Generator (DFIG)
... controller. The proposed controller is suitable for energy generation applications, where restricted variations of the speed around the synchronous velocity are present. The use of the PWM technique for drives inverter, allows it possible to obtain perfectly sinusoidal currents on the level of the s ...
... controller. The proposed controller is suitable for energy generation applications, where restricted variations of the speed around the synchronous velocity are present. The use of the PWM technique for drives inverter, allows it possible to obtain perfectly sinusoidal currents on the level of the s ...
A simple way to test buck converter stability
... around 5%. This makes it possible to draw larger pulse currents while limiting the total power in the pulse load resistor and MOSFET. A pulse width of around 150µsec is sufficient to see the full voltage sag and recovery in most DC/DC converters, so the PWM frequency can be set at around 330Hz. ...
... around 5%. This makes it possible to draw larger pulse currents while limiting the total power in the pulse load resistor and MOSFET. A pulse width of around 150µsec is sufficient to see the full voltage sag and recovery in most DC/DC converters, so the PWM frequency can be set at around 330Hz. ...
Designing with the TL431. - Switching Power Magazine
... you have a ruggedly stable system. The entire stability of your power system using the TL431 circuit is dependent upon quantities that can be very variable. The gain and bandwidth of the optocoupler can change from part to part, and also vary significantly with time and temperature. Care must be tak ...
... you have a ruggedly stable system. The entire stability of your power system using the TL431 circuit is dependent upon quantities that can be very variable. The gain and bandwidth of the optocoupler can change from part to part, and also vary significantly with time and temperature. Care must be tak ...
B.E. Electrical and Electronics Engineering
... UNIT III - SOURCE CODES, LINE CODES & ERROR CONTROL (Qualitative only) ...
... UNIT III - SOURCE CODES, LINE CODES & ERROR CONTROL (Qualitative only) ...
Simulation and Speed Control of 3-Phase Induction Motor
... Induction motors are the most widely used electrical motors due to their reliability, low cost and robustness. However, induction motors do not inherently have the capability of variable speed operation. Due to this reason, earlier dc motors were applied in most of the electrical drives. But the rec ...
... Induction motors are the most widely used electrical motors due to their reliability, low cost and robustness. However, induction motors do not inherently have the capability of variable speed operation. Due to this reason, earlier dc motors were applied in most of the electrical drives. But the rec ...
Programmable Logic Controller (PLC)
... • Now imagine, there is a problem or a small design change and you have to figure it all out on paper and then shut down the machine, move some wires, add some relays, debug and do it all over again • Imagine the labor involved in the simplest of changes • This is the problem that faced the engineer ...
... • Now imagine, there is a problem or a small design change and you have to figure it all out on paper and then shut down the machine, move some wires, add some relays, debug and do it all over again • Imagine the labor involved in the simplest of changes • This is the problem that faced the engineer ...
E5ZN - OMRON Industrial Automation
... ■ Connection Diagrams • Voltage output (control output) is not electrically isolated from internal circuitry. Therefore, when using grounded thermocouples, do not ground control output terminals. (Doing so may result in temperature measurement errors due to unwanted current paths.) • There is basic ...
... ■ Connection Diagrams • Voltage output (control output) is not electrically isolated from internal circuitry. Therefore, when using grounded thermocouples, do not ground control output terminals. (Doing so may result in temperature measurement errors due to unwanted current paths.) • There is basic ...
Aalborg Universitet Tertiary Control for Optimal Unbalance Compensation in Islanded Microgrids
... The hierarchical control for microgrids is defined in [7]. Based on this definition, this paper establishes a hierarchical control for actualizing unbalance compensation and MPQL control, as shown in Fig. 1. An example islanded system is outlined in the PLANT part depicted in Fig. 1. The DG power st ...
... The hierarchical control for microgrids is defined in [7]. Based on this definition, this paper establishes a hierarchical control for actualizing unbalance compensation and MPQL control, as shown in Fig. 1. An example islanded system is outlined in the PLANT part depicted in Fig. 1. The DG power st ...
PS22A76
... 1 :If control GND and power GND are patterned by common wiring, it may cause malfunction by fluctuation of power GND level. It is recommended to connect control GND and power GND at only a N1 point at which NU, NV, NW are connected to power GND line. 2 :It is recommended to insert a Zener diode D1 ( ...
... 1 :If control GND and power GND are patterned by common wiring, it may cause malfunction by fluctuation of power GND level. It is recommended to connect control GND and power GND at only a N1 point at which NU, NV, NW are connected to power GND line. 2 :It is recommended to insert a Zener diode D1 ( ...
Mutant Clap - Control Voltage
... The Clap can be clean when this control is turned low, but when dialed up, the sound will be overdriven and harsh. While this control does tend to affect the volume, don’t think of it as a volume control! CUTOFF CONTROL The resonant bandpass filter’s CUTOFF can be varied with this control. WHY IS TH ...
... The Clap can be clean when this control is turned low, but when dialed up, the sound will be overdriven and harsh. While this control does tend to affect the volume, don’t think of it as a volume control! CUTOFF CONTROL The resonant bandpass filter’s CUTOFF can be varied with this control. WHY IS TH ...
Study and Simulation of Current Controlled PWM Inverters
... frequency will remain constant in case of PI control and is equal to the frequency of the carrier wave. In this method, the switching is thus synchronous, i.e. at fixed intervals of time, whereas in case of hysteresis control, it is asynchronous and switching occurs whenever the current will go out ...
... frequency will remain constant in case of PI control and is equal to the frequency of the carrier wave. In this method, the switching is thus synchronous, i.e. at fixed intervals of time, whereas in case of hysteresis control, it is asynchronous and switching occurs whenever the current will go out ...
1 Ch 4
... European Standard EN 15232: Energy performance of buildings – Impact of Building Automation, Controls and Building Management, February, 2012. www.cen.eu This European Standard specifies: a structured list of control, building automation and technical building management functions which have an impa ...
... European Standard EN 15232: Energy performance of buildings – Impact of Building Automation, Controls and Building Management, February, 2012. www.cen.eu This European Standard specifies: a structured list of control, building automation and technical building management functions which have an impa ...
Fully decoupled current control and energy balancing of the
... control (fig. 5) depending on the machine type. Therefore the measured and transformed output currents iaα and iaβ are rotated into the corresponding stationary reference frame to control the magnetic flux and electric torque generating currents independently with a pair of PI-controllers. A feed fo ...
... control (fig. 5) depending on the machine type. Therefore the measured and transformed output currents iaα and iaβ are rotated into the corresponding stationary reference frame to control the magnetic flux and electric torque generating currents independently with a pair of PI-controllers. A feed fo ...
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.