Position Sensorless Control Based on Coordinate Transformation
... • A MATALAB/SIMULINK model for the proposed PMSM drive scheme is developed to perform the digital simulation. The experimental implementation of the scheme is performed with outer speed loop PI controller on digital computer and inner loop hysteresis current controller with analogue circuits. The sa ...
... • A MATALAB/SIMULINK model for the proposed PMSM drive scheme is developed to perform the digital simulation. The experimental implementation of the scheme is performed with outer speed loop PI controller on digital computer and inner loop hysteresis current controller with analogue circuits. The sa ...
ownload ppt file
... • Use powerful and high-performance MCU processor. The users can set function of use according to their requirements • Support unlimited rotate speed of brushless motor . • Support the function of fixed speed. • Delicate circuit design with strong anti-interference . • The starting mode can be set. ...
... • Use powerful and high-performance MCU processor. The users can set function of use according to their requirements • Support unlimited rotate speed of brushless motor . • Support the function of fixed speed. • Delicate circuit design with strong anti-interference . • The starting mode can be set. ...
Rad T 110
... • As the beam travels it diverges or spreads out. The further it travels the more spread out it becomes. • However, given that the same number of photons are in the beam their concentration or intensity will be diminished. ...
... • As the beam travels it diverges or spreads out. The further it travels the more spread out it becomes. • However, given that the same number of photons are in the beam their concentration or intensity will be diminished. ...
UCI224G
... semiconductors of the AVR ensure positive build-up from initial low levels of residual voltage. The exciter rotor output is fed to the main rotor through a three phase full wave bridge rectifier. This rectifier is protected by a surge suppressor against surges caused, for example, by short circuit. ...
... semiconductors of the AVR ensure positive build-up from initial low levels of residual voltage. The exciter rotor output is fed to the main rotor through a three phase full wave bridge rectifier. This rectifier is protected by a surge suppressor against surges caused, for example, by short circuit. ...
Electrical engineering
... e. Speed variation of DC motor by field control armature resistance variation and ward Leonard method. f. Determination of efficiency of DC motor by brake test. g. Determination of efficiency of a 1-phase transformer by direct loading. h. Parallel operation of 1-phase transformer. i. Study of a 3-po ...
... e. Speed variation of DC motor by field control armature resistance variation and ward Leonard method. f. Determination of efficiency of DC motor by brake test. g. Determination of efficiency of a 1-phase transformer by direct loading. h. Parallel operation of 1-phase transformer. i. Study of a 3-po ...
IRP Presentation - Iowa State University
... the turbine outside, and the loss of much of the previous teams work, many of these ideas were not realized. However, we are happy that we have provided a more professional and useable test-bed for the turbine, as well as a RPM sensor that may be used for a plethora of different projects in the futu ...
... the turbine outside, and the loss of much of the previous teams work, many of these ideas were not realized. However, we are happy that we have provided a more professional and useable test-bed for the turbine, as well as a RPM sensor that may be used for a plethora of different projects in the futu ...
SCIENTIFIC PAPERS OF THE UNIVERSITY OF PARDUBICE INNOVATION OF TRACTION DRIVES
... demanded function of U and f should be kept according to the certain algorithms, has been done separately for the converters of generation one. The example of that solution was the first Czech locomotive “Asynchron”. The change of frequency and output RMS voltage values for today converters is achie ...
... demanded function of U and f should be kept according to the certain algorithms, has been done separately for the converters of generation one. The example of that solution was the first Czech locomotive “Asynchron”. The change of frequency and output RMS voltage values for today converters is achie ...
Full-Text PDF
... amplitude torques. Typically, hydro units have mechanical parameters that are less prone to SSR problems than thermal units. Sub-synchronous oscillations were first discussed in 1937 [1,2] and until 1971, shaft torsional oscillations were neglected. Two shaft failures at the Mohave Generating Statio ...
... amplitude torques. Typically, hydro units have mechanical parameters that are less prone to SSR problems than thermal units. Sub-synchronous oscillations were first discussed in 1937 [1,2] and until 1971, shaft torsional oscillations were neglected. Two shaft failures at the Mohave Generating Statio ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... from a supply line, under their own inherent speed- torque characteristics and their operating conditions are dictated by the mechanical loads connected to them. However in many applications the motors are provided with control equipment by which their characteristics can be adjusted and their opera ...
... from a supply line, under their own inherent speed- torque characteristics and their operating conditions are dictated by the mechanical loads connected to them. However in many applications the motors are provided with control equipment by which their characteristics can be adjusted and their opera ...
Code Spec`s DL 2160 BASIC ELECTRICITY KIT – didactic
... The kit is supplied with a comprehensive manual that outline the different subjects of the practical exercises in a simple and progressive way. The suggested method is based on the direct observation and quantification of the phenomena to highlight the fundamental scientific laws. Due to the simplic ...
... The kit is supplied with a comprehensive manual that outline the different subjects of the practical exercises in a simple and progressive way. The suggested method is based on the direct observation and quantification of the phenomena to highlight the fundamental scientific laws. Due to the simplic ...
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.