... The phenomenon of voltages and currents on motor and generator shafts has been known for the past 100 years. It affects motors, hydro generators and turbo generators. There has been an increase in occurrences and intensity of shaft current damages as machines became larger, particularly on high spee ...
Integrated motor drive and battery charging system
... advantage in that they have relatively loW ripple and a rela tively small ?lter capacitance. This is especially true Where the motor is large and the stator inductance LS is small. [0029] Typically, in the various embodiments, a port 514 is provided for connection to utility poWer (not shoWn in FIG. ...
... advantage in that they have relatively loW ripple and a rela tively small ?lter capacitance. This is especially true Where the motor is large and the stator inductance LS is small. [0029] Typically, in the various embodiments, a port 514 is provided for connection to utility poWer (not shoWn in FIG. ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... The rated flux linkages up to a speed where the ration between the induced emf and stator frequency, known as voltage/Hz, with neglected the stator impedance, can be maintained constantan rated value. After the stator frequency, known as the base frequency, the volts/Hz ratio, and hence the stator f ...
... The rated flux linkages up to a speed where the ration between the induced emf and stator frequency, known as voltage/Hz, with neglected the stator impedance, can be maintained constantan rated value. After the stator frequency, known as the base frequency, the volts/Hz ratio, and hence the stator f ...
Microelectromechanical Devices
... motor initially operating at point 1. A small step increase in command frequency will initially move the operating point to point 2 (the rated torque) and then steadily increase to point 3. The frequency can then be decreased slightly to achieve the steady state operating point 4. All of these trans ...
... motor initially operating at point 1. A small step increase in command frequency will initially move the operating point to point 2 (the rated torque) and then steadily increase to point 3. The frequency can then be decreased slightly to achieve the steady state operating point 4. All of these trans ...
AC/DC Motors and Generators – Course Sample - Lab-Volt
... analyzer) provide instructors the opportunity to clearly demonstrate concepts related to electric power technology that, until now, could only be presented using traditional textbook methods and static drawings. The LVDAC-EMS (or LVDAM-EMS) system uses a customized data acquisition module to interco ...
... analyzer) provide instructors the opportunity to clearly demonstrate concepts related to electric power technology that, until now, could only be presented using traditional textbook methods and static drawings. The LVDAC-EMS (or LVDAM-EMS) system uses a customized data acquisition module to interco ...
Modeling electric drivetrains (as covered in class)
... understanding performance of many mobile robot drivetrains. Some factors not considered in this model are gearbox characteristics, nonlinear mechanical losses, and thermal limits, which can be important in some critical applications. The torque-speed characteristics for a Maxon RE040 PMDC motor incl ...
... understanding performance of many mobile robot drivetrains. Some factors not considered in this model are gearbox characteristics, nonlinear mechanical losses, and thermal limits, which can be important in some critical applications. The torque-speed characteristics for a Maxon RE040 PMDC motor incl ...
Optimal Commutation of a BLDC Motor by Utilizing the Symmetric
... the proposed method and to verify its effectiveness [5]. The position information of a rotor is detected by monitoring the back-emf voltage, and a DSP controls the switching of the inverter circuit and the speed of the motor with the proportional - integral (PI) control. The DSP is TMS320LF2407A b ...
... the proposed method and to verify its effectiveness [5]. The position information of a rotor is detected by monitoring the back-emf voltage, and a DSP controls the switching of the inverter circuit and the speed of the motor with the proportional - integral (PI) control. The DSP is TMS320LF2407A b ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... 2.1 Sinusoidal PWM Concept The sinusoidal pulse-width modulation (SPWM) technique produces a sinusoidal waveform by filtering an output pulse waveform with varying width. A high switching frequency leads to a better filtered sinusoidal output waveform. The desired output voltage is achieved by varyi ...
... 2.1 Sinusoidal PWM Concept The sinusoidal pulse-width modulation (SPWM) technique produces a sinusoidal waveform by filtering an output pulse waveform with varying width. A high switching frequency leads to a better filtered sinusoidal output waveform. The desired output voltage is achieved by varyi ...
Jabsco Pumps 18590-0000 Pump
... pump so it can be heard while operating. When the tank is empty there will be a change in pump noise (louder, higher frequency) at which time the macerator should immediately be switched off. The macerator pump unit has been designed to handle waste, toilet tissue, and facial tissue. It will also ha ...
... pump so it can be heard while operating. When the tank is empty there will be a change in pump noise (louder, higher frequency) at which time the macerator should immediately be switched off. The macerator pump unit has been designed to handle waste, toilet tissue, and facial tissue. It will also ha ...
Si85xx AC Current Sensor Family
... supply applications. However, the timing requirements should be verified in Motor control, UPS, and lighting ballast applications. The typical buck converter application shown in Figure 4 can be used to illustrate reset signal hook-up as well as the associated timing. In this example, the current fl ...
... supply applications. However, the timing requirements should be verified in Motor control, UPS, and lighting ballast applications. The typical buck converter application shown in Figure 4 can be used to illustrate reset signal hook-up as well as the associated timing. In this example, the current fl ...
C5EA02 How does the resettable fuse work.cdr
... Figure 3 - PTC Curve For Fuzetec TM R esettable Fus e ...
... Figure 3 - PTC Curve For Fuzetec TM R esettable Fus e ...
Sensorless Rotor Temperature Estimation of Permanent Magnet
... high intrinsic coercivity (Hci) and big maximum energy product (BHmax). Thus, PMSMs manufactured with NdFeBmagnets reveal comparatively high power density. The motor size is significantly reduced by maintaining an excellent torque capability. A drawback of the magnet is its relatively low resistivit ...
... high intrinsic coercivity (Hci) and big maximum energy product (BHmax). Thus, PMSMs manufactured with NdFeBmagnets reveal comparatively high power density. The motor size is significantly reduced by maintaining an excellent torque capability. A drawback of the magnet is its relatively low resistivit ...
TDA1085C Universal Motor Speed Controller
... from 0 to the maximum speed. If VPin 6 = 0, only the high acceleration ramp occurs. To get a real zero speed position, Pin 5 has been designed in such a way that its voltage from 0 to 80 mV is interpreted as a true zero. As a consequence, when changing the speed set position, the designer must be su ...
... from 0 to the maximum speed. If VPin 6 = 0, only the high acceleration ramp occurs. To get a real zero speed position, Pin 5 has been designed in such a way that its voltage from 0 to 80 mV is interpreted as a true zero. As a consequence, when changing the speed set position, the designer must be su ...
615-4740 (45-075) Induction Kit
... Using the same items as the preceding section (DC), set up the two wound coils and place the iron rod in the center. Connect to a standard bench power supply and apply 6 volts AC to one coil, with the other coil connected as before to a center reading galvanometer 600-0-600uA. Because AC reverses it ...
... Using the same items as the preceding section (DC), set up the two wound coils and place the iron rod in the center. Connect to a standard bench power supply and apply 6 volts AC to one coil, with the other coil connected as before to a center reading galvanometer 600-0-600uA. Because AC reverses it ...
Duplex Pump Control Panels
... All motor starters supplied in Metron Duplex Controls are internationally rated and have approvals from UL, CSA, Demko, Nenko, Semko, FI and ASE. The overloads are current sensing and are designed to hold during high current demand when starting but will trip when a sustained overload occurs. Trippi ...
... All motor starters supplied in Metron Duplex Controls are internationally rated and have approvals from UL, CSA, Demko, Nenko, Semko, FI and ASE. The overloads are current sensing and are designed to hold during high current demand when starting but will trip when a sustained overload occurs. Trippi ...
transmisii pentru transformarea indirectă a miªcării, pe bază de
... function on inverse logic. Pin 16 functions on direct logic. c. The LPT S group consists of pin set 10 ÷ 13 and 15. On these pins, bits (signals) are intercepted from external devices of PC with which this one is interconnected. These pins are unidirectional, their direction being that of receiving ...
... function on inverse logic. Pin 16 functions on direct logic. c. The LPT S group consists of pin set 10 ÷ 13 and 15. On these pins, bits (signals) are intercepted from external devices of PC with which this one is interconnected. These pins are unidirectional, their direction being that of receiving ...
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