Aalborg Universitet Flywheel Energy Storage Systems
... for BESS [17], especially in the application considered in this paper, which is characterized by deep and frequent cycling. Compared with BESS, flywheel ESS (FESS) is a more suitable technology for providing frequent and fast power compensation services; it is a mature and economical technology, whi ...
... for BESS [17], especially in the application considered in this paper, which is characterized by deep and frequent cycling. Compared with BESS, flywheel ESS (FESS) is a more suitable technology for providing frequent and fast power compensation services; it is a mature and economical technology, whi ...
MAX9247 General Description Features
... The MAX9247 pairs with the MAX9248/MAX9250 deserializers to form a complete digital video serial link. Interconnect can be controlled-impedance PCB traces or twisted-pair cable. Proprietary data encoding reduces EMI and provides DC balance. DC balance allows ACcoupling, providing isolation between t ...
... The MAX9247 pairs with the MAX9248/MAX9250 deserializers to form a complete digital video serial link. Interconnect can be controlled-impedance PCB traces or twisted-pair cable. Proprietary data encoding reduces EMI and provides DC balance. DC balance allows ACcoupling, providing isolation between t ...
Synchronous operation of five-phase converters in linear modulation
... presented in Figs. 9-10, is characterized by the fractional ratio between the switching frequency and fundamental frequency, equal to 1500/40=37.5, but the phase-to-neutral voltage has quarter-wave symmetry in this control mode too. During synthesis of algorithms of synchronized PWM for five-phase i ...
... presented in Figs. 9-10, is characterized by the fractional ratio between the switching frequency and fundamental frequency, equal to 1500/40=37.5, but the phase-to-neutral voltage has quarter-wave symmetry in this control mode too. During synthesis of algorithms of synchronized PWM for five-phase i ...
Modeling and analysis of harmonic resonance in a power
... or subsystems on the system stability is usually hidden in the state matrix. In [12], the Component Connection Method (CCM) that takes advantage of matrix algebra and sparsity is introduced for the stability analysis of the High-Voltage DC (HVDC) systems. Unlike the general state-space models, the C ...
... or subsystems on the system stability is usually hidden in the state matrix. In [12], the Component Connection Method (CCM) that takes advantage of matrix algebra and sparsity is introduced for the stability analysis of the High-Voltage DC (HVDC) systems. Unlike the general state-space models, the C ...
Stability and dynamic performance of current
... stand-alone VRM is represented by a Thevenin source [5], [6], as shown in Fig. 2. The Thevenin-source approach simplifies the model since it focuses only on the CS loop. Output voltage of the Thevenin source depends on module output current and CS signal . To distinguish between large-signal and sma ...
... stand-alone VRM is represented by a Thevenin source [5], [6], as shown in Fig. 2. The Thevenin-source approach simplifies the model since it focuses only on the CS loop. Output voltage of the Thevenin source depends on module output current and CS signal . To distinguish between large-signal and sma ...
Aalborg Universitet system
... or subsystems on the system stability is usually hidden in the state matrix. In [12], the Component Connection Method (CCM) that takes advantage of matrix algebra and sparsity is introduced for the stability analysis of the High-Voltage DC (HVDC) systems. Unlike the general state-space models, the C ...
... or subsystems on the system stability is usually hidden in the state matrix. In [12], the Component Connection Method (CCM) that takes advantage of matrix algebra and sparsity is introduced for the stability analysis of the High-Voltage DC (HVDC) systems. Unlike the general state-space models, the C ...
building energy management system controllers
... The IQ®4E controller has 10 universal inputs and 6 analogue voltage outputs and is expandable up to 192 points (depending on the controller variant) by adding I/O modules. This flexibility makes it suitable for a broad range of applications. The controller uses Ethernet and TCP/IP networking technol ...
... The IQ®4E controller has 10 universal inputs and 6 analogue voltage outputs and is expandable up to 192 points (depending on the controller variant) by adding I/O modules. This flexibility makes it suitable for a broad range of applications. The controller uses Ethernet and TCP/IP networking technol ...
Augmentation Protection
... TNSP must ensure that protection and control systems and settings are implemented such that they will not operate for plant loading levels up to at least those shown in Table A-2. TNSP must ensure that protection and control systems and settings are implemented such that they will not operate for vo ...
... TNSP must ensure that protection and control systems and settings are implemented such that they will not operate for plant loading levels up to at least those shown in Table A-2. TNSP must ensure that protection and control systems and settings are implemented such that they will not operate for vo ...
Power Flow Analysis and Voltage Control using
... – Disable Phase Shifter Control (affects entire case) – Transformer Stepping Methodology • Coordinated Sensitivities looks at all transformers that are out-of-range and coordinates the movement to bring all back within regulation range • Self-Sensitivity Only looks at each transformer individually a ...
... – Disable Phase Shifter Control (affects entire case) – Transformer Stepping Methodology • Coordinated Sensitivities looks at all transformers that are out-of-range and coordinates the movement to bring all back within regulation range • Self-Sensitivity Only looks at each transformer individually a ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... shoot-through for Z-source inverter is generated by comparing two straight dc lines with the carrier signal. The magnitudes of these dc lines are +Vsh and –Vsh are shown in the figure 2. When the carrier signal is greater than +Vsh and less than –Vsh it will generate shoot-through pulses. If the tim ...
... shoot-through for Z-source inverter is generated by comparing two straight dc lines with the carrier signal. The magnitudes of these dc lines are +Vsh and –Vsh are shown in the figure 2. When the carrier signal is greater than +Vsh and less than –Vsh it will generate shoot-through pulses. If the tim ...
Implementation of FPGA based D.C motor Speed Controller using
... the motor for giving feedback pulses of the speed of the motor to the FPGA board on pin GPIO_0 (1) .The encoder has measured the feedback pulses for the duration of 1Hz.Keys on the FPGA board are used to vary the duty cycle of the input P.W.M signal and it’s also displayed on seven segment of the bo ...
... the motor for giving feedback pulses of the speed of the motor to the FPGA board on pin GPIO_0 (1) .The encoder has measured the feedback pulses for the duration of 1Hz.Keys on the FPGA board are used to vary the duty cycle of the input P.W.M signal and it’s also displayed on seven segment of the bo ...
Lighting Control Protocols
... among disciplines and will allow the continued integration of lighting control with other major building systems. Greater integration will ultimately lead to more efficient and healthier buildings enhancing the experience of the built environment for more people. For the purposes of this discussion, ...
... among disciplines and will allow the continued integration of lighting control with other major building systems. Greater integration will ultimately lead to more efficient and healthier buildings enhancing the experience of the built environment for more people. For the purposes of this discussion, ...
... the full supply voltage to the motor for short pulses of variable duration. This is done by timing the opening and closing of high frequency switch. In practice a power MOSFET (Metal-Oxide Field-Effect Transistor) is used to do this switching. A signal similar to the waveform desired across the moto ...
Aalborg Universitet Control and Protection Cooperation Strategy for Voltage Instability
... implying the generation and transmission system P-V characteristics being changed to a weaker mode according to Section II. The border between the OEL area and NOEL area in R-X plane represents the apparent impedance when the generator is operating right on its capacity limits. It can be transformed ...
... implying the generation and transmission system P-V characteristics being changed to a weaker mode according to Section II. The border between the OEL area and NOEL area in R-X plane represents the apparent impedance when the generator is operating right on its capacity limits. It can be transformed ...
QUICKTRONIC® POWERSENSE® T5 Dimming UNV
... (0-10VDC) fluorescent controllers or compatible 2-wire power line fluorescent dimmers, making them ideal for individual office lighting or automated building applications, both in new construction and retrofit projects. For the individual office or conference room, installation can be streamlined by ...
... (0-10VDC) fluorescent controllers or compatible 2-wire power line fluorescent dimmers, making them ideal for individual office lighting or automated building applications, both in new construction and retrofit projects. For the individual office or conference room, installation can be streamlined by ...
Vector Control Drive of Permanent Magnet Synchronous Motor Using Resolver Sensor
... the preferred solution for speed and position control drives on machine tools and robots. In vector control drive, the highly accurate position from position sensor is required to transform the abc variables to the dq variable in the synchronously rotating reference frame aligned with the rotor flux ...
... the preferred solution for speed and position control drives on machine tools and robots. In vector control drive, the highly accurate position from position sensor is required to transform the abc variables to the dq variable in the synchronously rotating reference frame aligned with the rotor flux ...
Coordination of Converter and Fuel Cell Controllers
... where E is the open circuit voltage, vact is the activation loss, vohm is the ohmic loss, and vconc is the concentration loss. The detailed formulation of the FC voltage, also known as, polarization characteristic can be found in [16]. In steady state, FC voltage is given as static function of curre ...
... where E is the open circuit voltage, vact is the activation loss, vohm is the ohmic loss, and vconc is the concentration loss. The detailed formulation of the FC voltage, also known as, polarization characteristic can be found in [16]. In steady state, FC voltage is given as static function of curre ...
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.