Magnetism and Electromagnetism
... 15. A commercial motor has a multi-section commutator - two sections for each of several rotating coils wound in different planes. Although only one of these coils carries a current at any one time, having a lot of them makes the rotation far smoother. 16 a). A commercial motor uses field coils not ...
... 15. A commercial motor has a multi-section commutator - two sections for each of several rotating coils wound in different planes. Although only one of these coils carries a current at any one time, having a lot of them makes the rotation far smoother. 16 a). A commercial motor uses field coils not ...
13 common causes of motor failure
... When motor shaft voltages exceed the insulating capability of the bearing grease, flashover currents to the outer bearing will occur, thereby causing pitting and grooving to the bearing races. The first signs of this problem will be noise and overheating as the bearings begin to lose their original ...
... When motor shaft voltages exceed the insulating capability of the bearing grease, flashover currents to the outer bearing will occur, thereby causing pitting and grooving to the bearing races. The first signs of this problem will be noise and overheating as the bearings begin to lose their original ...
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 ...
Electric Motor Comparison
... The experimental setup consists of two interchangeable AC-motors (1/2 and 3/4 horsepower) whose performance is measured by a one horsepower dynamometer/generator. The dynamometer, or “dyno” as it is called in the automotive industry, is basically a DC generator coupled to a force-measuring device, s ...
... The experimental setup consists of two interchangeable AC-motors (1/2 and 3/4 horsepower) whose performance is measured by a one horsepower dynamometer/generator. The dynamometer, or “dyno” as it is called in the automotive industry, is basically a DC generator coupled to a force-measuring device, s ...
simulation of matrix converter-fed permanent magnet synchronous
... affected from parameter changes and quick speed response to the speed demand are required [8-9]. The main principal of the vector control is based on decoupling of the current into two components. While one of them is responsible from the torque, the other will be responsible from the flux generatio ...
... affected from parameter changes and quick speed response to the speed demand are required [8-9]. The main principal of the vector control is based on decoupling of the current into two components. While one of them is responsible from the torque, the other will be responsible from the flux generatio ...
Design of a Small Personal Electric Vehicle as
... possibility to use low-cost industry standard IGBTs require the use of a fairly high voltage. However, a high voltage requires many batteries connected in series. Moreover Attention should be paid to safety requirements in case of higher voltages. C. Motor choice Current electrical go-karts employ m ...
... possibility to use low-cost industry standard IGBTs require the use of a fairly high voltage. However, a high voltage requires many batteries connected in series. Moreover Attention should be paid to safety requirements in case of higher voltages. C. Motor choice Current electrical go-karts employ m ...
Annotated - Electrical and Computer Engineering
... In a transformer energy is transferred from primary to secondary, form of energy (electrical) is unchanged. In a ROTATING ELECTRIC MACHINE (M/C or m/c), electrical energy is converted into mechanical form and vice versa: Electric Motor Electric energy to Mechanical Energy. Electric Generator ...
... In a transformer energy is transferred from primary to secondary, form of energy (electrical) is unchanged. In a ROTATING ELECTRIC MACHINE (M/C or m/c), electrical energy is converted into mechanical form and vice versa: Electric Motor Electric energy to Mechanical Energy. Electric Generator ...
View - The IJST
... Brushless dc (BLDC) motors, with their trapezoidal electromotive force (EMF) profile, requires six discrete rotor position informations for the inverter operation. These are typically generated by Hall- effect switch sensors placed within the motor. However, it is a well-known fact that these sensor ...
... Brushless dc (BLDC) motors, with their trapezoidal electromotive force (EMF) profile, requires six discrete rotor position informations for the inverter operation. These are typically generated by Hall- effect switch sensors placed within the motor. However, it is a well-known fact that these sensor ...
DC POWER SUPPLY BLOCK DIAGRAM OF POWER SUPPLY
... inductor, or along the element of a resistor or a potentiometer. Taps are sometimes used on inductors for the coupling of signals, and may not necessarily be at the half-way point, but rather, closer to one end. A common application of this is in the Hartley oscillator. Inductors with taps also perm ...
... inductor, or along the element of a resistor or a potentiometer. Taps are sometimes used on inductors for the coupling of signals, and may not necessarily be at the half-way point, but rather, closer to one end. A common application of this is in the Hartley oscillator. Inductors with taps also perm ...
Voltage Transducer LV 100-100 VPN = 100 V
... Caution, risk of electrical shock When operating the transducer, certain parts of the module can carry hazardous voltage (eg. primary busbar, power supply). Ignoring this warning can lead to injury and/or cause serious damage. This transducer is a build-in device, whose conducting parts must be inac ...
... Caution, risk of electrical shock When operating the transducer, certain parts of the module can carry hazardous voltage (eg. primary busbar, power supply). Ignoring this warning can lead to injury and/or cause serious damage. This transducer is a build-in device, whose conducting parts must be inac ...
A Summary of Single Phase Motor Characteristics
... Both of these motors share similar electrical characteristics and exhibit moderate running efficiencies – 45% to 50%. Split Phase motors have moderate starting torque and do not employ the use of start capacitors to create a rotating magnetic field. Capacitor Start-Induction Run motors produce high ...
... Both of these motors share similar electrical characteristics and exhibit moderate running efficiencies – 45% to 50%. Split Phase motors have moderate starting torque and do not employ the use of start capacitors to create a rotating magnetic field. Capacitor Start-Induction Run motors produce high ...
DC Machines - Electrical and Computer Engineering
... Universal Motor’s advantages Compared with other types of single-phase ac motors, the universal motor has several advantages: 1- For a given weight, universal motors produce more power than other types. This is a large advantage for hand-held tools and small appliances, such as drills, saws,mixers, ...
... Universal Motor’s advantages Compared with other types of single-phase ac motors, the universal motor has several advantages: 1- For a given weight, universal motors produce more power than other types. This is a large advantage for hand-held tools and small appliances, such as drills, saws,mixers, ...
Analysis of energy-saving structures of electric machines for
... tested at supply voltage equaling U = 230 V AC. Figs. 5–6 show the dependence of speed n (Fig. 5) and efficiency (Fig. 6) on the function of the load torque TL . ...
... tested at supply voltage equaling U = 230 V AC. Figs. 5–6 show the dependence of speed n (Fig. 5) and efficiency (Fig. 6) on the function of the load torque TL . ...
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. ...
Stepper motor
A stepper motor or step motor or stepping motor is a brushless DC electric motor that divides a full rotation into a number of equal steps. The motor's position can then be commanded to move and hold at one of these steps without any feedback sensor (an open-loop controller), as long as the motor is carefully sized to the application in respect to torque and speed.Switched reluctance motors are very large stepping motors with a reduced pole count, and generally are closed-loop commutated.