In this lesson we will Study the control of several different kinds of
... Will have a corresponding affect on the motor’s speed Using scheme called pulse width modulation PWM The average magnitude of the applied voltage Can effectively be controlled Thereby so can the motor’s speed Will learn how to do this shortly As the speed of the motor decreases so does its torque If ...
... Will have a corresponding affect on the motor’s speed Using scheme called pulse width modulation PWM The average magnitude of the applied voltage Can effectively be controlled Thereby so can the motor’s speed Will learn how to do this shortly As the speed of the motor decreases so does its torque If ...
10 Application Information
... rated HP at rated load and voltage. With AC systems, it is commonly the point where 60 Hz is applied to the induction motor. Breakaway Torque – The torque required to start a machine from standstill. Breakdown Torque (BDT) – The maximum torque that an AC motor will develop with rated voltage applied ...
... rated HP at rated load and voltage. With AC systems, it is commonly the point where 60 Hz is applied to the induction motor. Breakaway Torque – The torque required to start a machine from standstill. Breakdown Torque (BDT) – The maximum torque that an AC motor will develop with rated voltage applied ...
WIPO IPC: Internet Publication
... This subclass covers arrangements for starting, regulating, electronically commutating, braking, or otherwise controlling motors, generators, dynamo-electric converters, clutches, brakes, gears, transformers, reactors or choke coils, of the types classified in the relevant subclasses, e.g. H01F, H02 ...
... This subclass covers arrangements for starting, regulating, electronically commutating, braking, or otherwise controlling motors, generators, dynamo-electric converters, clutches, brakes, gears, transformers, reactors or choke coils, of the types classified in the relevant subclasses, e.g. H01F, H02 ...
sense
... •When no light falls on it, the LDR behaves as an open circuit (very high resistance: 10^6 ohms) •As the intensity of light increases, the resistance drops (to about 10 to 100 ohms) ...
... •When no light falls on it, the LDR behaves as an open circuit (very high resistance: 10^6 ohms) •As the intensity of light increases, the resistance drops (to about 10 to 100 ohms) ...
Analysis and Implementation of DSP Based Speed Control of Three
... In this paper we analyse the speed control of induction motor in various control techniques and implement the new controller depends on intelligent techniques. In recent years, the field oriented control of induction motor drive is widely used in high performance drive system. It is due to its uniqu ...
... In this paper we analyse the speed control of induction motor in various control techniques and implement the new controller depends on intelligent techniques. In recent years, the field oriented control of induction motor drive is widely used in high performance drive system. It is due to its uniqu ...
Behavior of three-phase induction motors with variable
... Three-phase induction motors are widely used in industry with sinusoidal and pulse-width modulation 共PWM兲 supplies for variable speed drives. Unfortunately, losses in inverter-fed machines are always greater than in those operating under sinusoidal voltage supplies. In some cases this requires derat ...
... Three-phase induction motors are widely used in industry with sinusoidal and pulse-width modulation 共PWM兲 supplies for variable speed drives. Unfortunately, losses in inverter-fed machines are always greater than in those operating under sinusoidal voltage supplies. In some cases this requires derat ...
Download
... lecture continued for more than 2 hours. The contents discussed during the session were - an introduction on the electric and hybrid vehicles , how it remains unique when compared to the other vehicles, a detailed information on how to manufacture such a vehicle , and also the benefits of using such ...
... lecture continued for more than 2 hours. The contents discussed during the session were - an introduction on the electric and hybrid vehicles , how it remains unique when compared to the other vehicles, a detailed information on how to manufacture such a vehicle , and also the benefits of using such ...
Lecture 7
... (transformer action) into the field windings of the rotor (a DC power source is not required) Although induction machines can be motors or generators they have many disadvantages as generators. Thus, they are referred to typically as induction motors. Most popular type of AC motor ...
... (transformer action) into the field windings of the rotor (a DC power source is not required) Although induction machines can be motors or generators they have many disadvantages as generators. Thus, they are referred to typically as induction motors. Most popular type of AC motor ...
Microcontroller based PWM Inverter for Speed Control of a Three
... relatively cheap, simple in construction and can be used in hostile environment [2]. The widespread proliferation of power electronics and ancillary control circuits into motor control system in the past two or three decades have led to a situation where motor drives, which process about two third o ...
... relatively cheap, simple in construction and can be used in hostile environment [2]. The widespread proliferation of power electronics and ancillary control circuits into motor control system in the past two or three decades have led to a situation where motor drives, which process about two third o ...
Microelectromechanical Devices
... Elimination of copper loss Higher power density and efficiency Lower rotor inertia Larger airgaps possible because of larger coercive force densities. ...
... Elimination of copper loss Higher power density and efficiency Lower rotor inertia Larger airgaps possible because of larger coercive force densities. ...
Reducing high frequency ground currents to zero
... of this same application can be disastrous if proper precautions are not taken. The motor bearing could fail in a matter of months. Bearing fluting is caused when an electrical discharge occurs between the bearing inner or outer races and the rotating balls. Since a minimum of 41% of motor failures ...
... of this same application can be disastrous if proper precautions are not taken. The motor bearing could fail in a matter of months. Bearing fluting is caused when an electrical discharge occurs between the bearing inner or outer races and the rotating balls. Since a minimum of 41% of motor failures ...
Closed loop control
... • Instant of wasted the slip power is can be converted to 50 Hz AC and pumped back to the line – Here , the slip power can flow only in one ...
... • Instant of wasted the slip power is can be converted to 50 Hz AC and pumped back to the line – Here , the slip power can flow only in one ...
PDF document
... the same time and causing massive current to flow ・Equipped with 4 protective circuits ⇒ Improves safety and reliability of application devices The extremely unique point is the ability to use "PWM drive with DC voltage input". The mechanism is: when DC voltage is applied to the VREF pin, as with co ...
... the same time and causing massive current to flow ・Equipped with 4 protective circuits ⇒ Improves safety and reliability of application devices The extremely unique point is the ability to use "PWM drive with DC voltage input". The mechanism is: when DC voltage is applied to the VREF pin, as with co ...
About Electric Motors
... The motor kits can be used as a classroom or laboratory exercise in electromagnetism for high school students. One approach is to have students observe their instructor assemble one motor kit. Each student is then given an instruction sheet and a motor kit to assemble at home. A satisfactory grade i ...
... The motor kits can be used as a classroom or laboratory exercise in electromagnetism for high school students. One approach is to have students observe their instructor assemble one motor kit. Each student is then given an instruction sheet and a motor kit to assemble at home. A satisfactory grade i ...
G201 INSTALLATION NOTES:
... The internal fuse is the G213V‟s final line of protection. It blows only under the most extreme circumstances. Those are reversed power supply polarity; AC voltage instead of DC voltage on terminals 1 and 2 and power supply voltages in excess of 114VDC. Correct the problem and replace the fuse with ...
... The internal fuse is the G213V‟s final line of protection. It blows only under the most extreme circumstances. Those are reversed power supply polarity; AC voltage instead of DC voltage on terminals 1 and 2 and power supply voltages in excess of 114VDC. Correct the problem and replace the fuse with ...
Transformers - Wellington High School
... moving with a speed of 30.0 m s-1. A coil of 1000 turns of mean area 20.0 cm2 is placed with its ...
... moving with a speed of 30.0 m s-1. A coil of 1000 turns of mean area 20.0 cm2 is placed with its ...
Power Electronics Design
... and highly efficient is for something along the lines of a motor scooter or motor cycle to be powered by an electric motor and batteries. In this case it would be about a 150 to 350 lb vehicle that will transport a single driver. The mechanics in electric-based transportation are simpler than their ...
... and highly efficient is for something along the lines of a motor scooter or motor cycle to be powered by an electric motor and batteries. In this case it would be about a 150 to 350 lb vehicle that will transport a single driver. The mechanics in electric-based transportation are simpler than their ...
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
... The LB1638, 1638M are low-saturation bidirectional motor driver ICs for use in low-voltage applications. At an IO of 500 mA, they have a low saturation output of VO (sat) = 0.75 V. They are especially suited for use in compact motor of portable equipment. ...
... The LB1638, 1638M are low-saturation bidirectional motor driver ICs for use in low-voltage applications. At an IO of 500 mA, they have a low saturation output of VO (sat) = 0.75 V. They are especially suited for use in compact motor of portable equipment. ...
Design Issues - MSU College of Engineering
... The fact that this motor controller will be used in a vehicle environment makes safety a major concern in its design. The malfunction of this product has the potential to be extremely hazardous for the user as well as other people around it. One of the main risks involved with the motor controller ...
... The fact that this motor controller will be used in a vehicle environment makes safety a major concern in its design. The malfunction of this product has the potential to be extremely hazardous for the user as well as other people around it. One of the main risks involved with the motor controller ...
Brushed DC electric motor
A brushed DC motor is an internally commutated electric motor designed to be run from a direct current power source. Brushed motors were the first commercially important application of electric power to driving mechanical energy,and DC distribution systems were used for more than 100 years to operate motors in commercial and industrial buildings. Brushed DC motors can be varied in speed by changing the operating voltage or the strength of the magnetic field. Depending on the connections of the field to the power supply, the speed and torque characteristics of a brushed motor can be altered to provide steady speed or speed inversely proportional to the mechanical load. Brushed motors continue to be used for electrical propulsion, cranes, paper machines and steel rolling mills. Since the brushes wear down and require replacement, brushless DC motors using power electronic devices have displaced brushed motors from many applications