NGEE ANN POLYTECHNIC MECHANICAL ENGINEERING
... Alternating Current (AC). An electric current that reverses direction sinusoidally. Concept of phases and frequency. Direct Current (DC). Current flow is unidirectional and of constant magnitude . Negative and positive terminals (battery, cells) ...
... Alternating Current (AC). An electric current that reverses direction sinusoidally. Concept of phases and frequency. Direct Current (DC). Current flow is unidirectional and of constant magnitude . Negative and positive terminals (battery, cells) ...
Synchronous Machines
... The rotor poles are excited by a dc machine and its stator windings are connected to the ac supply. The air gap flux is therefore the resultant of the fluxes due to both rotor current and stator current. If the synchronous motor is not loaded but is simply floating on the ac supply system, it will b ...
... The rotor poles are excited by a dc machine and its stator windings are connected to the ac supply. The air gap flux is therefore the resultant of the fluxes due to both rotor current and stator current. If the synchronous motor is not loaded but is simply floating on the ac supply system, it will b ...
Cleaning Electric Motors - The Disaster Handbook
... Use proper tools (box or socket wrench and screwdriver) to remove bolts holding end bells. Use a soft-faced (plastic, wood or lead) hammer and screwdriver to tap end bells loose. Remove the end that does not hold the starting switch or brush ring. Observe the position and number of shims as you remo ...
... Use proper tools (box or socket wrench and screwdriver) to remove bolts holding end bells. Use a soft-faced (plastic, wood or lead) hammer and screwdriver to tap end bells loose. Remove the end that does not hold the starting switch or brush ring. Observe the position and number of shims as you remo ...
Mtroniks Viper Marine 20 ESC
... The Marine20 and is the perfect speed controller for anybody wanting to either upgrade their old Speed Controller for a no nonsense 20Amp limit reversible electronic Speed Control or for anybody who uses scale model RC boats at scale speeds. The Marine20 is the big brother to the Marine15 from the V ...
... The Marine20 and is the perfect speed controller for anybody wanting to either upgrade their old Speed Controller for a no nonsense 20Amp limit reversible electronic Speed Control or for anybody who uses scale model RC boats at scale speeds. The Marine20 is the big brother to the Marine15 from the V ...
No Slide Title - Personal Web Pages
... For sequential energisation of the stator windings we can either use the pulse generator or micro-controller for generating PWM signals. In order to make pulse per rotation and set the direction of the rotation, two pulse trains of same cycle and phase shifted are supplied by the pulse generator. ...
... For sequential energisation of the stator windings we can either use the pulse generator or micro-controller for generating PWM signals. In order to make pulse per rotation and set the direction of the rotation, two pulse trains of same cycle and phase shifted are supplied by the pulse generator. ...
10 - Electric Motors
... When power is applied, DC motors turn in one direction at a fixed speed. They are optimized to run at a fixed, usually high RPM. Torque is highest at the rated speed and lowest at low speeds. Speed can be varied if a (pulse width modulation) PWM controller is added. ...
... When power is applied, DC motors turn in one direction at a fixed speed. They are optimized to run at a fixed, usually high RPM. Torque is highest at the rated speed and lowest at low speeds. Speed can be varied if a (pulse width modulation) PWM controller is added. ...
Stepper Motor DEMO - Computer Engineering Department (EMU)
... Stepping motors are simple to drive in an open loop configuration and for their size provide excellent torque at low speed. The benefits offered by stepping motors include: a simple and cost effective design high reliability maintenance free (no brushes) open loop (no feed back device required) know ...
... Stepping motors are simple to drive in an open loop configuration and for their size provide excellent torque at low speed. The benefits offered by stepping motors include: a simple and cost effective design high reliability maintenance free (no brushes) open loop (no feed back device required) know ...
RB-Pol-266 200:1 Plastic Gearmotor 90 Degree Shaft
... modified hobby servos or Tamiya gearboxes. The low-current motor is a perfect match for qik 2s9v1 dual serial motor controller, Baby Orangutan robot controller, or DRV8833 dual motor driver carrier, and the compact size makes this unit an attractive choice for small robot designs. The recommended op ...
... modified hobby servos or Tamiya gearboxes. The low-current motor is a perfect match for qik 2s9v1 dual serial motor controller, Baby Orangutan robot controller, or DRV8833 dual motor driver carrier, and the compact size makes this unit an attractive choice for small robot designs. The recommended op ...
Elec467 Power Machines & Transformers
... torque characteristics of the three DC motor types are compared. A Series motor is the most non-linear but are capable of extremely high torque at low speeds (with high current). Whatever a shunt motor can do…a compound motor can do better (slightly). In common are the crossing points for Series, Co ...
... torque characteristics of the three DC motor types are compared. A Series motor is the most non-linear but are capable of extremely high torque at low speeds (with high current). Whatever a shunt motor can do…a compound motor can do better (slightly). In common are the crossing points for Series, Co ...
Chapter 9: Introduction to Electric Machines
... • Stator would be wound with solenoid that carries the generated energy – there can be more than one windings hence it can generate more than 1 phase of electricity ...
... • Stator would be wound with solenoid that carries the generated energy – there can be more than one windings hence it can generate more than 1 phase of electricity ...
開啟檔案
... application which requires that its operating frequency be reduced from 60 to 50Hz. This application requires that , for the operating condition considered in Problem 4.8, the rms generated voltage equal 13.0 kV line-to-line. As a result, the machine armature must be rewound with a different ...
... application which requires that its operating frequency be reduced from 60 to 50Hz. This application requires that , for the operating condition considered in Problem 4.8, the rms generated voltage equal 13.0 kV line-to-line. As a result, the machine armature must be rewound with a different ...
Design and prototyping of electrical machines
... with increased motor speeds, better cooling technologies and new machine topologies. The power output of electric motors is proportional to torque and motor speed but contrary to an increased motor speed an increased torque leads to an increased weight. There is a project in which traction motors wi ...
... with increased motor speeds, better cooling technologies and new machine topologies. The power output of electric motors is proportional to torque and motor speed but contrary to an increased motor speed an increased torque leads to an increased weight. There is a project in which traction motors wi ...
Elec467 Power Machines & Transformers
... This design allows the flux from a permanent magnet to be added to the electromagnetic flux of the stator to give added holding power. In the construction of the rotor, the toothed sections attached to either side of the permanent magnet are misaligned with each other but arranged so that just one s ...
... This design allows the flux from a permanent magnet to be added to the electromagnetic flux of the stator to give added holding power. In the construction of the rotor, the toothed sections attached to either side of the permanent magnet are misaligned with each other but arranged so that just one s ...
Transducer types
... Brushed motor – permanent magnets on armature, rotor acts as electromagnet Brushless motor – permanent magnet on the rotor, electromagnets on armature are switched ...
... Brushed motor – permanent magnets on armature, rotor acts as electromagnet Brushless motor – permanent magnet on the rotor, electromagnets on armature are switched ...
In a typical DC motor, there are permanent magnets on the outside
... stator (stationary part) is essentially the primary side of the transformer and the rotor (rotating part) is the secondary side . The primary side's currents evokes a magnetic field which interacts with the secondary sides mmf to produce a resultant torque ,henceforth serving the purpose of producin ...
... stator (stationary part) is essentially the primary side of the transformer and the rotor (rotating part) is the secondary side . The primary side's currents evokes a magnetic field which interacts with the secondary sides mmf to produce a resultant torque ,henceforth serving the purpose of producin ...
Teknologi Elektrik
... system and a mechanical system. •Conversion from mechanical to electrical: generator •Conversion from electrical to mechanical: motor ...
... system and a mechanical system. •Conversion from mechanical to electrical: generator •Conversion from electrical to mechanical: motor ...
Small programmable brushless controllers for Multicopters TMM
... Very clear indication of controller states and error codes using 4 LEDs All important possibilities and features compatible with X-series range controllers ...
... Very clear indication of controller states and error codes using 4 LEDs All important possibilities and features compatible with X-series range controllers ...
AC motor
An AC motor is an electric motor driven by an alternating current (AC). The AC motor commonly consists of two basic parts, an outside stationary stator having coils supplied with alternating current to produce a rotating magnetic field, and an inside rotor attached to the output shaft producing a second rotating magnetic field. The rotor magnetic field may be produced by permanent magnets, reluctance saliency, or DC or AC electrical windings.Less commonly, linear AC motors operate on similar principles as rotating motors but have their stationary and moving parts arranged in a straight line configuration, producing linear motion instead of rotation.