IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... permanent-magnet synchronous machines (PMSMs) are controlled by 2 three-leg voltage-source inverters (VSIs), respectively. The proposed module can output maximum torque and reach the maximum velocity. When one leg fails, the corresponding PMSM is isolated from the fault VSI and the fault subway trai ...
... permanent-magnet synchronous machines (PMSMs) are controlled by 2 three-leg voltage-source inverters (VSIs), respectively. The proposed module can output maximum torque and reach the maximum velocity. When one leg fails, the corresponding PMSM is isolated from the fault VSI and the fault subway trai ...
Comparison of energy efficiency determination methods for the
... the classification according CEMEP could have this motor as IE1 Standard efficiency or in a case of direct method the value of efficiency is lower than desired level and the difference would be more significant in the case of higher rated power motors. The main point is that a standard efficiency mo ...
... the classification according CEMEP could have this motor as IE1 Standard efficiency or in a case of direct method the value of efficiency is lower than desired level and the difference would be more significant in the case of higher rated power motors. The main point is that a standard efficiency mo ...
Improved Algorithms of Direct Torque Control Method
... carried out basing on the motor torque equation as a product of stator ψ s and rotor ψ r fluxes and the angle between them as well as the dependence of the stator flux on the inverter output voltage vectors [1, 4]. The analysis is usually carried out in the stationary coordinates αβ. Such an approac ...
... carried out basing on the motor torque equation as a product of stator ψ s and rotor ψ r fluxes and the angle between them as well as the dependence of the stator flux on the inverter output voltage vectors [1, 4]. The analysis is usually carried out in the stationary coordinates αβ. Such an approac ...
LEM2-4 Instructions
... adjustable in 3 axes, not the usual 2. (see Fig. 2) Step 11 If the LEM is to be powered down for an extended period after initial installation, replace the EZ Key. This will prevent the battery from discharging when AC power is removed. However, it will also prevent the battery from charging when A ...
... adjustable in 3 axes, not the usual 2. (see Fig. 2) Step 11 If the LEM is to be powered down for an extended period after initial installation, replace the EZ Key. This will prevent the battery from discharging when AC power is removed. However, it will also prevent the battery from charging when A ...
Time Electronics
... source for simulating a transmitter and the loop supply, sink of loop current for simulating a transmitter, and measurement of loop current/voltage for simulating a loop indicator. Manual step of the output is possible at five calibration points; 0%, 25%, 50%, 75% and 100% of span. Automatic steppin ...
... source for simulating a transmitter and the loop supply, sink of loop current for simulating a transmitter, and measurement of loop current/voltage for simulating a loop indicator. Manual step of the output is possible at five calibration points; 0%, 25%, 50%, 75% and 100% of span. Automatic steppin ...
Systems Repair Worksheet
... pulse generators, _____ _______ sensors, _____________ sensors & metal detection sensors. 28. Magnetic pulse generators consist of a _____ - ____ coil & a trigger wheel called a _________. These are also known as PM generators because they contain permanent magnets. 29. Metal detection sensors use p ...
... pulse generators, _____ _______ sensors, _____________ sensors & metal detection sensors. 28. Magnetic pulse generators consist of a _____ - ____ coil & a trigger wheel called a _________. These are also known as PM generators because they contain permanent magnets. 29. Metal detection sensors use p ...
ISL6744A - Intersil
... RTD - This is the oscillator timing capacitor discharge current control pin. A resistor is connected between this pin and GND. The current flowing through the resistor determines the magnitude of the discharge current. The discharge current is nominally 55x this current. The PWM deadtime is determin ...
... RTD - This is the oscillator timing capacitor discharge current control pin. A resistor is connected between this pin and GND. The current flowing through the resistor determines the magnitude of the discharge current. The discharge current is nominally 55x this current. The PWM deadtime is determin ...
INTRODUCTION TO BASIC POWER SUPPLIES
... Double insulation techniques present at least two ‘high voltage’ insulation barriers between the mains input circuitry and the system being powered. For example, the mains transformer has its primary (high voltage) winding on one bobbin and its secondary winding an a separate bobbin. Thus, if the pr ...
... Double insulation techniques present at least two ‘high voltage’ insulation barriers between the mains input circuitry and the system being powered. For example, the mains transformer has its primary (high voltage) winding on one bobbin and its secondary winding an a separate bobbin. Thus, if the pr ...
Chapter 1.5.2 - Digilent Learn site
... Current Measurement: Consider the circuit shown in Figure 3(a). A voltage source, Vs, provides power to a circuit element with resistance, R. We want to measure the current, i, through the circuit element. We do this by attaching an ammeter in series with the circuit element as shown in Figure 3(b). ...
... Current Measurement: Consider the circuit shown in Figure 3(a). A voltage source, Vs, provides power to a circuit element with resistance, R. We want to measure the current, i, through the circuit element. We do this by attaching an ammeter in series with the circuit element as shown in Figure 3(b). ...
26 24 19 Motor Control Centers
... A. General: Motor control center lineups shall comply with NEMA ICS 18 and be provided as shown with the following ratings: 1. Service: Voltage rating and number of wires shall be as shown or indicated on the Drawings. Motor control center shall operate from a three-phase, 60 Hertz system. 2. Wiring ...
... A. General: Motor control center lineups shall comply with NEMA ICS 18 and be provided as shown with the following ratings: 1. Service: Voltage rating and number of wires shall be as shown or indicated on the Drawings. Motor control center shall operate from a three-phase, 60 Hertz system. 2. Wiring ...
Enter o to this page the details for the document
... circuit to limit the current flow is essential. The coil will have a very low resistance. 2 m of 0.6 mm copper wire has a resistance of about 0.12 ohms. Even a 1.5 V ‘D’ cell will give a large current through this resistance. It is necessary to use a series resistor to cut down the current and use a ...
... circuit to limit the current flow is essential. The coil will have a very low resistance. 2 m of 0.6 mm copper wire has a resistance of about 0.12 ohms. Even a 1.5 V ‘D’ cell will give a large current through this resistance. It is necessary to use a series resistor to cut down the current and use a ...
Control System Lab
... 5. Describe saturable core reactor. 6. Describe in detail the circuitry of magnetic amplifier. 7. Give the purpose of saturable reactor in magnetic amplifier. 8. Explain working of magnetic amplifier in saturable reactor mode. 9. Explain working of magnetic amplifier in self saturable reactor mode. ...
... 5. Describe saturable core reactor. 6. Describe in detail the circuitry of magnetic amplifier. 7. Give the purpose of saturable reactor in magnetic amplifier. 8. Explain working of magnetic amplifier in saturable reactor mode. 9. Explain working of magnetic amplifier in self saturable reactor mode. ...
submersible sew submersible sew submersible
... THE starter ‘TRIPS’, the Rotation is wrong. If pump is noisy and vibrates, rotation is wrong. Wrong direction of pump would also be indicated in the Control Panel and Starter would trip. To change rotation, interchange any two line leads to motor on 3Ø. DO NOT INTERCHANGE MAIN INCOMING LINES. Check ...
... THE starter ‘TRIPS’, the Rotation is wrong. If pump is noisy and vibrates, rotation is wrong. Wrong direction of pump would also be indicated in the Control Panel and Starter would trip. To change rotation, interchange any two line leads to motor on 3Ø. DO NOT INTERCHANGE MAIN INCOMING LINES. Check ...
120A/150A ESC (PDF file)
... Neutral Range - This setting adjusts the amount of "Deadband" off neutral on the throttle trigger. This is in milliseconds (MS) and is the amount of neutral when you pull the trigger. The smaller the value, the less "Deadband" or movement is required off-center for the ESC to begin throttle function ...
... Neutral Range - This setting adjusts the amount of "Deadband" off neutral on the throttle trigger. This is in milliseconds (MS) and is the amount of neutral when you pull the trigger. The smaller the value, the less "Deadband" or movement is required off-center for the ESC to begin throttle function ...
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.