Electrical Engineering - GCET
... SECTION-I Electromagnetic Energy Conversion: Basic Principle, Energy in magnetic system, Field energy and mechanical force. Transformers: Principle, Construction and operation of single phase transformer, phasor diagram, equivalent circuit, voltage regulation. Transformers losses and efficiency, Tes ...
... SECTION-I Electromagnetic Energy Conversion: Basic Principle, Energy in magnetic system, Field energy and mechanical force. Transformers: Principle, Construction and operation of single phase transformer, phasor diagram, equivalent circuit, voltage regulation. Transformers losses and efficiency, Tes ...
Current Control of VSI-PWM Inverters
... machine is employed in the simulations. The machine is assumed to be in a high-performance field-oriented drive operating at constant speed over the period of the simulation. The magnitude and phase of the counter EMF is calculated assuming that the actual currents track the current references t ...
... machine is employed in the simulations. The machine is assumed to be in a high-performance field-oriented drive operating at constant speed over the period of the simulation. The magnitude and phase of the counter EMF is calculated assuming that the actual currents track the current references t ...
sinamics v20
... have precisely the right answer with our SINAMICS V20. To increase energy efficiency, the converter is equipped with a control technique to achieve optimum energy efficiency through automatic flux reduction. Not only this, it displays the actual energy consumption and has additional, integrated ene ...
... have precisely the right answer with our SINAMICS V20. To increase energy efficiency, the converter is equipped with a control technique to achieve optimum energy efficiency through automatic flux reduction. Not only this, it displays the actual energy consumption and has additional, integrated ene ...
sinamics v20
... have precisely the right answer with our SINAMICS V20. To increase energy efficiency, the converter is equipped with a control technique to achieve optimum energy efficiency through automatic flux reduction. Not only this, it displays the actual energy consumption and has additional, integrated ene ...
... have precisely the right answer with our SINAMICS V20. To increase energy efficiency, the converter is equipped with a control technique to achieve optimum energy efficiency through automatic flux reduction. Not only this, it displays the actual energy consumption and has additional, integrated ene ...
Transformers and Power Flow
... Higher permeability means lower magnetic current and vice versa. Permeability can be represented by a parallel inductance (Xm) to the primary terminal because magnetizing current does not affect the amount of induced voltage. This inductance is called magnetizing inductance. ...
... Higher permeability means lower magnetic current and vice versa. Permeability can be represented by a parallel inductance (Xm) to the primary terminal because magnetizing current does not affect the amount of induced voltage. This inductance is called magnetizing inductance. ...
HV2213591366
... current and voltage PQ problems. There are many techniques reported for the elimination of harmonics from the source current as well as the compensation of the neutral current and load balancing [4]. Three-phase four wire distribution systems have been used to supply single-phase low-voltage loads. ...
... current and voltage PQ problems. There are many techniques reported for the elimination of harmonics from the source current as well as the compensation of the neutral current and load balancing [4]. Three-phase four wire distribution systems have been used to supply single-phase low-voltage loads. ...
63-7062 - Variable Frequency Drive (VFD)
... Many of these can be replaced with a standard induction motor and a general purpose PWM VFD to provide a more reliable and cost effective solution to the VFD requirement. Using a VFD often provides energy conservation benefits and improvements in the accuracy of control as a bonus. Many opportunitie ...
... Many of these can be replaced with a standard induction motor and a general purpose PWM VFD to provide a more reliable and cost effective solution to the VFD requirement. Using a VFD often provides energy conservation benefits and improvements in the accuracy of control as a bonus. Many opportunitie ...
A Bidirectional Rotary Actuator Using Shape Memory Alloy Wires
... bidirectional high torque motion without interference. In this work, a conceptually designed actuator is fabricated as a functional prototype, and driving characterization and working performance verification are experimentally conducted. Due to its structural simplicity, scalability, modularity, an ...
... bidirectional high torque motion without interference. In this work, a conceptually designed actuator is fabricated as a functional prototype, and driving characterization and working performance verification are experimentally conducted. Due to its structural simplicity, scalability, modularity, an ...
Computationally-efficient Finite-element-based Thermal
... component of electric/hybrid electric vehicle (EV/HEV) powertrains. It is therefore important that vehicle powertrain-level and system-level designers and control engineers have access to accurate yet computationally-efficient (CE), physicsbased modeling tools of the thermal and electromagnetic (EM) ...
... component of electric/hybrid electric vehicle (EV/HEV) powertrains. It is therefore important that vehicle powertrain-level and system-level designers and control engineers have access to accurate yet computationally-efficient (CE), physicsbased modeling tools of the thermal and electromagnetic (EM) ...
Effectively Using Pressure, Load, and Torque Sensors with Today`s
... In piezoresistive-type pressure sensors, the transduction elements which convert the stress from the diaphragm deflection into an electrical signal are called piezoresistors. Piezoresistance equals changing electrical resistance due to mechanical stress. The pressure sensing element is a diaphragm w ...
... In piezoresistive-type pressure sensors, the transduction elements which convert the stress from the diaphragm deflection into an electrical signal are called piezoresistors. Piezoresistance equals changing electrical resistance due to mechanical stress. The pressure sensing element is a diaphragm w ...
lecture1423723848
... Electromechanical Energy conversion, forces and torque in magnetic field systems – energy balance, energy and force in a singly excited magnetic field system, determination of magnetic force , coenergy, multi excited magnetic field systems. DC Generators – Principle of operation, Action of commutato ...
... Electromechanical Energy conversion, forces and torque in magnetic field systems – energy balance, energy and force in a singly excited magnetic field system, determination of magnetic force , coenergy, multi excited magnetic field systems. DC Generators – Principle of operation, Action of commutato ...
- Krest Technology
... for constant v/f control of induction motor drive. However, these optimal switching patterns are suitable only for low performance MV drives due to assumption of steady-state operating conditions [24]. For high performance drives, which are subjected to frequent transient conditions, SOP technique s ...
... for constant v/f control of induction motor drive. However, these optimal switching patterns are suitable only for low performance MV drives due to assumption of steady-state operating conditions [24]. For high performance drives, which are subjected to frequent transient conditions, SOP technique s ...
Induction motor
An induction or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding. An induction motor therefore does not require mechanical commutation, separate-excitation or self-excitation for all or part of the energy transferred from stator to rotor, as in universal, DC and large synchronous motors. An induction motor's rotor can be either wound type or squirrel-cage type.Three-phase squirrel-cage induction motors are widely used in industrial drives because they are rugged, reliable and economical. Single-phase induction motors are used extensively for smaller loads, such as household appliances like fans. Although traditionally used in fixed-speed service, induction motors are increasingly being used with variable-frequency drives (VFDs) in variable-speed service. VFDs offer especially important energy savings opportunities for existing and prospective induction motors in variable-torque centrifugal fan, pump and compressor load applications. Squirrel cage induction motors are very widely used in both fixed-speed and variable-frequency drive (VFD) applications. Variable voltage and variable frequency drives are also used in variable-speed service.