Induction Motors
... Induction motor speed So, the IM will always run at a speed lower than the synchronous speed The difference between the motor speed and the synchronous speed is called the Slip ...
... Induction motor speed So, the IM will always run at a speed lower than the synchronous speed The difference between the motor speed and the synchronous speed is called the Slip ...
5.8 Induction motor losses and efficiency
... For running, the windings are switched to delta-connection. This method of starting is less expensive than by auto transformer. (Wound Rotor) When starting on load is necessary, a wound rotor induction motor must be used. This is because maximum torque at starting ...
... For running, the windings are switched to delta-connection. This method of starting is less expensive than by auto transformer. (Wound Rotor) When starting on load is necessary, a wound rotor induction motor must be used. This is because maximum torque at starting ...
Series DC Motors
... winding that is used to produce the required magnetic field by DC excitation. Often know as the field. • Rotor: The rotor is the rotating part of the machine. The rotor carries a distributed winding, and is the winding where the emf is induced. Also known as the ...
... winding that is used to produce the required magnetic field by DC excitation. Often know as the field. • Rotor: The rotor is the rotating part of the machine. The rotor carries a distributed winding, and is the winding where the emf is induced. Also known as the ...
DC Motors
... The wire loops on the armature are connected through slip rings and brushes so that current flow in the wire loops keeps reversing forcing the armature to rotate to line up with the electromagnetic field ...
... The wire loops on the armature are connected through slip rings and brushes so that current flow in the wire loops keeps reversing forcing the armature to rotate to line up with the electromagnetic field ...
EEEB283 Electrical Machines & Drives
... – Normal IM equations can be used, except s is negative – Only possible for > s when fed from fixed frequency source ...
... – Normal IM equations can be used, except s is negative – Only possible for > s when fed from fixed frequency source ...
78ET-1 - Marine Engineering Study Materials
... common frequency used in Indian flag vessel in India? Give the relation for frequency in a.c. generators. Find the number of armature conductors in series per phase required for the armature of a 3-phase, 50 Hz, 10-pole alternator with 90 slots. The winding is to be star connected to give a line vol ...
... common frequency used in Indian flag vessel in India? Give the relation for frequency in a.c. generators. Find the number of armature conductors in series per phase required for the armature of a 3-phase, 50 Hz, 10-pole alternator with 90 slots. The winding is to be star connected to give a line vol ...
DC Motors - United States Naval Academy
... Understand the induced effects of rotating a currentcarrying closed loop conductor in a magnetic field (Faraday/Lenz/Electromotive Force) ...
... Understand the induced effects of rotating a currentcarrying closed loop conductor in a magnetic field (Faraday/Lenz/Electromotive Force) ...
Electrical Machine -II
... EE110 Electrical Machine –II L-T-P-Cr: 3-1-0-4 Objective: To have the basic knowledge of construction , operating principle, characteristics and application of Synchronous Generator, Synchronous Motor, Single Phase Induction Motors, AC series motor, hysteresis motor, reluctance motor, Single Phase S ...
... EE110 Electrical Machine –II L-T-P-Cr: 3-1-0-4 Objective: To have the basic knowledge of construction , operating principle, characteristics and application of Synchronous Generator, Synchronous Motor, Single Phase Induction Motors, AC series motor, hysteresis motor, reluctance motor, Single Phase S ...
Charging System
... through the field windings. Process: Switches current flow on and off in the field windings, by watching line ...
... through the field windings. Process: Switches current flow on and off in the field windings, by watching line ...
Electric Drives_MyCourses
... AC motor control Rotational speed is determined by the frequency of the input voltage Frequency is controlled with variable frequency drive/inverter (taajuusmuuttaja in Finnish) - Rectification of the three phase voltage to DC voltage - The rectified DC voltage is converted e.g. with pulse width mo ...
... AC motor control Rotational speed is determined by the frequency of the input voltage Frequency is controlled with variable frequency drive/inverter (taajuusmuuttaja in Finnish) - Rectification of the three phase voltage to DC voltage - The rectified DC voltage is converted e.g. with pulse width mo ...
dc motor
... This presentation consists of the following concepts related to the electrical machine which is used everywhere called ‘DC MOTOR’. What are electrical machines? What’s a Dc Motor? It’s basic parts. Animated working. Different Motors. Compare generator & motor diagrammatically. Summary. ...
... This presentation consists of the following concepts related to the electrical machine which is used everywhere called ‘DC MOTOR’. What are electrical machines? What’s a Dc Motor? It’s basic parts. Animated working. Different Motors. Compare generator & motor diagrammatically. Summary. ...
VIBRATION OF AC INDUCTION ELECTRIC MOTORS
... stator magnetic field causes a current to flow in the rotor bars. The current in the rotor creates a second magnetic field which has opposite polarity relative to the stator field. The resulting interaction of magnetic fields produces the torque which causes the rotor to turn. The rotor laminations ...
... stator magnetic field causes a current to flow in the rotor bars. The current in the rotor creates a second magnetic field which has opposite polarity relative to the stator field. The resulting interaction of magnetic fields produces the torque which causes the rotor to turn. The rotor laminations ...
Document
... • Single-phase motors are used mostly to operate home appliances such as air conditioners, refrigerators, pumps, and fans. • They are designed to operate on 120 V or 240 V. • They range in capacity from fractional horsepower to several horsepower depending on the application. • Voltage is induced in ...
... • Single-phase motors are used mostly to operate home appliances such as air conditioners, refrigerators, pumps, and fans. • They are designed to operate on 120 V or 240 V. • They range in capacity from fractional horsepower to several horsepower depending on the application. • Voltage is induced in ...
Electrical Machines
... Similar to the squirrel cage found in induction machines Also Known as “Damper “ windings ...
... Similar to the squirrel cage found in induction machines Also Known as “Damper “ windings ...
Electric Drives
... Regenerative braking is not possible since the field current needs to be maintained but it collapses when the rotor current passes through zero and reverses. ...
... Regenerative braking is not possible since the field current needs to be maintained but it collapses when the rotor current passes through zero and reverses. ...
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.