Microelectromechanical Devices
... The Park’s transformation is a three-phase to two-phase transformation for synchronous machine analysis. It is used to transform the stator variables of a synchronous machine onto a dq reference frame that is fixed to the rotor. The +ve q-axis is aligned with the magnetic axis of the field winding a ...
... The Park’s transformation is a three-phase to two-phase transformation for synchronous machine analysis. It is used to transform the stator variables of a synchronous machine onto a dq reference frame that is fixed to the rotor. The +ve q-axis is aligned with the magnetic axis of the field winding a ...
Mechatronics II
... (3) Viscous Drag – Dv (N.m/radians/second) (4) Coulomb Drag – Dc (N.m) (5) Mechanical Time Constant – mech (second) (6) Motor Torque Constant – Kt (N.m/Ampere) (7) System Rotational Inertia – J (kg.m) (8) Electrical time constant elec (seconds) (9) Inductance L (henries) ...
... (3) Viscous Drag – Dv (N.m/radians/second) (4) Coulomb Drag – Dc (N.m) (5) Mechanical Time Constant – mech (second) (6) Motor Torque Constant – Kt (N.m/Ampere) (7) System Rotational Inertia – J (kg.m) (8) Electrical time constant elec (seconds) (9) Inductance L (henries) ...
Power Electronics
... It is recommended that the softstart is protected by superfast semiconductor fuses rated as per the current rating of the softstart or motor. However, standard line and motor protection is acceptable, but for high starting frequencies motor winding temperature monitoring is recommended. ...
... It is recommended that the softstart is protected by superfast semiconductor fuses rated as per the current rating of the softstart or motor. However, standard line and motor protection is acceptable, but for high starting frequencies motor winding temperature monitoring is recommended. ...
Linear Glide Joystick Datasheet
... Maximum Y-axis Instant Force Output .................................................................................................................... 44 N Maximum X-axis Instant Force Output .......................................................................................................... ...
... Maximum Y-axis Instant Force Output .................................................................................................................... 44 N Maximum X-axis Instant Force Output .......................................................................................................... ...
Actuators for Robots
... handle short bursts of very high current, which can be many times greater than the continuous current requirements. Another key characteristic of the brushed servo motor is a high torque ...
... handle short bursts of very high current, which can be many times greater than the continuous current requirements. Another key characteristic of the brushed servo motor is a high torque ...
Lenzs` Law - PhysicsAPB
... How many of those little Power Cube thingies do you have around your house? Here's how many I found around mine: The answering machine The cordless phone The cell phone The electronic anti-flea ultrasonic noisemaker (we have 2 dogs) The digital camera The nicad battery recharger The video camera ba ...
... How many of those little Power Cube thingies do you have around your house? Here's how many I found around mine: The answering machine The cordless phone The cell phone The electronic anti-flea ultrasonic noisemaker (we have 2 dogs) The digital camera The nicad battery recharger The video camera ba ...
DL01420622071
... The type of control may be open loop control or may be a feedback control. In scalar control, the air gap flux is maintained constant to achieve the maximum torque at a constant level. Constant flux is achieved through maintaining the ratio of voltage to frequency constant with a boost at low freque ...
... The type of control may be open loop control or may be a feedback control. In scalar control, the air gap flux is maintained constant to achieve the maximum torque at a constant level. Constant flux is achieved through maintaining the ratio of voltage to frequency constant with a boost at low freque ...
Technical catalogue Fr. 355 - 400
... of the insulation material are fundamental insulation material used must ensure the to the optimum operation and duration reliable operation of the motor within its of any electric motor, and for this reason own absolute temperature limits. a temperature limit corresponding Insulation material quali ...
... of the insulation material are fundamental insulation material used must ensure the to the optimum operation and duration reliable operation of the motor within its of any electric motor, and for this reason own absolute temperature limits. a temperature limit corresponding Insulation material quali ...
READ MORE - xtreme electrical online
... Generator and alternator are two devices, which converts mechanical energy into electrical energy. Both have the same principle of electromagnetic induction, the only difference is that their construction. Generator persists stationary magnetic field and rotating conductor which rolls on the armatur ...
... Generator and alternator are two devices, which converts mechanical energy into electrical energy. Both have the same principle of electromagnetic induction, the only difference is that their construction. Generator persists stationary magnetic field and rotating conductor which rolls on the armatur ...
Speed control of DC motors
... Before we can discuss the speed control of a DC motor, it is important to understand the physical time varying relationships that determine the operating characteristics of a DC motor. Equation (1) below describes the linear relationship between the torque T and the current i a applied to the motor. ...
... Before we can discuss the speed control of a DC motor, it is important to understand the physical time varying relationships that determine the operating characteristics of a DC motor. Equation (1) below describes the linear relationship between the torque T and the current i a applied to the motor. ...
Hybrid Terminal Sliding-Mode Observer Design Method for a
... by mechanical sensors such as encoders, resolvers, and so on. However, these high-precision mechanical sensors would increase the cost and size of thePMSM system, hence reducing the reliability and limiting the applications under certain conditions. The sensorless technique enables control of PMSM w ...
... by mechanical sensors such as encoders, resolvers, and so on. However, these high-precision mechanical sensors would increase the cost and size of thePMSM system, hence reducing the reliability and limiting the applications under certain conditions. The sensorless technique enables control of PMSM w ...
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.