HN3613321337
... the system. A lot of articles have been published about the use of these devices for damping the SSR. In this paper, two compensators such as TCSC and SSSC are compared to know their effectiveness in damping of oscillations. The SSSC is used as a voltage source in series with a fixed dc source and T ...
... the system. A lot of articles have been published about the use of these devices for damping the SSR. In this paper, two compensators such as TCSC and SSSC are compared to know their effectiveness in damping of oscillations. The SSSC is used as a voltage source in series with a fixed dc source and T ...
Wien Bridge Oscillator Automatic Gain Control (AGC)
... adjusting the loop gain so the sinusoid amplitude is stable. It uses negative feedback just like opamp circuits, but the controlled variable is the sine wave amplitude rather than voltage. Consider the circuit shown in Figure 6.6. ...
... adjusting the loop gain so the sinusoid amplitude is stable. It uses negative feedback just like opamp circuits, but the controlled variable is the sine wave amplitude rather than voltage. Consider the circuit shown in Figure 6.6. ...
Aalborg Universitet Flywheel Energy Storage System
... charger(s). The HEV charger, grid interface and flywheel have their own specific dynamic features, so it is necessary to study the effect produced by each unit, in order to obtain the stability properties of the whole system. (1). HEV charger. A buck DC/DC converter is applied as EV charger followin ...
... charger(s). The HEV charger, grid interface and flywheel have their own specific dynamic features, so it is necessary to study the effect produced by each unit, in order to obtain the stability properties of the whole system. (1). HEV charger. A buck DC/DC converter is applied as EV charger followin ...
VCM TCM LCM Data Sheet/Manual PDF
... provides protection against oil, water, dirt, and mechanical damage. They can be quickly and easily mounted to most surfaces by using the self-stick adhesive pad. ...
... provides protection against oil, water, dirt, and mechanical damage. They can be quickly and easily mounted to most surfaces by using the self-stick adhesive pad. ...
Pepperl+Fuchs offers a wide range of float switches
... - mercury-free switching element - usable as a contact output - connects directly to a PLC input, no ...
... - mercury-free switching element - usable as a contact output - connects directly to a PLC input, no ...
B. Direct Field Oriented Control of Induction Motor
... In this paper, we present a study of the vector control of an autonomous induction generator taking the saturation effects into account. The output voltage of the induction generator passes by the association rectifier –filter- inverter for feeding a three phase induction motor. To use the induction ...
... In this paper, we present a study of the vector control of an autonomous induction generator taking the saturation effects into account. The output voltage of the induction generator passes by the association rectifier –filter- inverter for feeding a three phase induction motor. To use the induction ...
Control characteristics for quasi-optimal operation of switched
... SRM with an induction torque meter. The motor was supplied by a converter that enables the independent regulation of all three control variables: phase voltage Uav (by means of the PWM method), switchon angle on and conduction angle z . The rotor position angle, and consequently the rotational s ...
... SRM with an induction torque meter. The motor was supplied by a converter that enables the independent regulation of all three control variables: phase voltage Uav (by means of the PWM method), switchon angle on and conduction angle z . The rotor position angle, and consequently the rotational s ...
Aalborg Universitet Coordinated Power Control Strategy based on Primary-Frequency-Signaling for Islanded Microgrids
... level controller to manage the power flow of each unit using physical communication setup, which may increase cost and complexity for microgrids. This paper adopted an interesting way of communication which using the information of AC bus for coordinated operation. In this way, the external communic ...
... level controller to manage the power flow of each unit using physical communication setup, which may increase cost and complexity for microgrids. This paper adopted an interesting way of communication which using the information of AC bus for coordinated operation. In this way, the external communic ...
Control of VSC-HVDC for wind power
... By using Pulse Width Modulation techniques with high switching frequency in the range of 1-2 kHz, the wave shape of the converter ac voltage output can be controlled to be almost sinusoidal with the aid of high frequency filter. Changes in waveform, phase angle and magnitude can be made by changing ...
... By using Pulse Width Modulation techniques with high switching frequency in the range of 1-2 kHz, the wave shape of the converter ac voltage output can be controlled to be almost sinusoidal with the aid of high frequency filter. Changes in waveform, phase angle and magnitude can be made by changing ...
Maximum Power Point Tracking Using Model
... the duty cycle is rapidly changed in order to track the MPP [7]. Thus, the ideal MPPT control algorithm would be simple and inexpensive, and would demonstrate rapid convergence to the MPP with minimal oscillation in the output voltage. This paper develops a two-level MPPT control algorithm that cons ...
... the duty cycle is rapidly changed in order to track the MPP [7]. Thus, the ideal MPPT control algorithm would be simple and inexpensive, and would demonstrate rapid convergence to the MPP with minimal oscillation in the output voltage. This paper develops a two-level MPPT control algorithm that cons ...
Controls Training Course
... Lesson 6 - Triacs, Diacs, and Solid-State Relays Objectives: Explain how the development of the triac has made HVACR controls more versatile. Explain the difference between a triac and a SCR. Describe how a triac is Agated on and off. Explain how and why triacs can be used on resistive and i ...
... Lesson 6 - Triacs, Diacs, and Solid-State Relays Objectives: Explain how the development of the triac has made HVACR controls more versatile. Explain the difference between a triac and a SCR. Describe how a triac is Agated on and off. Explain how and why triacs can be used on resistive and i ...
Microcontrollers XC800 Family AP08091 Application Note V1.0
... Each commutation sequence has one of the windings energized to positive power (current enters into the winding), the second winding is negative (current exits the winding) and the third is in a non-energized condition. Torque is produced because of the interaction between the magnetic field generate ...
... Each commutation sequence has one of the windings energized to positive power (current enters into the winding), the second winding is negative (current exits the winding) and the third is in a non-energized condition. Torque is produced because of the interaction between the magnetic field generate ...
SIGMA Advanced Generator Protection and Control
... priority. The highest (numerical lowest) prioritized generator is the first to be started, then the second highest, etc. The cyclic sequence stops the generators after “the-first-in-first-out” principle. The duty hour sequence starts and stops the generators according to their number of running hour ...
... priority. The highest (numerical lowest) prioritized generator is the first to be started, then the second highest, etc. The cyclic sequence stops the generators after “the-first-in-first-out” principle. The duty hour sequence starts and stops the generators according to their number of running hour ...
Brushless DC Motors – Part I: Construction and Operating Principles
... current for the implementation of speed and torque control. The PI control loop is implemented in firmware to execute on the CPU. For over current protection, the comparator (CMP) is used to kill the PWM output in case of over current. CMP blocks available inside the device provide an internal progr ...
... current for the implementation of speed and torque control. The PI control loop is implemented in firmware to execute on the CPU. For over current protection, the comparator (CMP) is used to kill the PWM output in case of over current. CMP blocks available inside the device provide an internal progr ...
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.