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[DOCX File]EE 2352 — SOLID STATE DRIVES
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A 50 kW, 240 V, 1700 rpm separately excited dc motor is controlled by a converter. The field current is maintained at I f = 1.4 A and the machine back emf constant is K v = 0.91 V/A rad/s. The armature resistance is R m = 0.1 Q and the viscous friction Constant is B = 0.3 Nm/rad/s. The amplification of the speed sensor is K l = 95 m V/rad/s and the gain of the power controller is K 2 = 100.

[DOC File]The first step in analyzing a power system is to get the ...
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Power in a three phase circuit is three times the single phase power or three times the current in one phase times the line to neutral voltage (VLN). The line to neutral voltage is the line to line voltage divided by the square root of three. (Eq. 2) Power factor (PF) is sometimes specified instead of X/R. This must be the short-circuit power ...

[DOC File]EffTool User's Manual - ABB
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Motor calculation. The electric power taken by a three-phase motor is given by the following equation. where U is the nominal voltage, I the nominal current, and cos ( the power factor of the motor. These values are stamped into the rating plate of the motor. Knowing the mechanical power, which is the rated power of a motor, losses can be ...

[DOC File]Home Assignment -3 - Weebly
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The flux per pole is 0.015 Wb. Assume efficiency 85% and power factor as 0.85 lagging. Determine the main dimensions, turns per phase, number of slots, conductor section and slot area of 200 H.P, 3 phase, 50Hz, 400 Volts, 1480 r.p.m. slip ring induction motor.

[DOC File]Air Flow, Air Systems, Pressure, and Fan Performance
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For example, to calculate BHP from motor amp draw, use the following formula: 1 phase motors 3 phase motors. BHP = V * I * E * PF BHP = V * I * E * PF * 1.73. 746 746. where: BHP = Brake Horsepower V = Line Voltage I = Line Current E = Motor Efficiency (Usually about .85 to .9) PF = Motor Power Factor (Usually about .9)

[DOC File]7
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Turn OFF the power supply. Calculate the three-phase Apparent Power, S, for the motor using V1 and I1. S = (3 Vline Iline = _____ VA. Calculate the Full Load Torque (Rated Torque) using the rated watts and rated RPM for the motor: T = P/( = _____ Newton-Meters. Calculated the ratio of starting torque (measured above) to rated torque:

[DOC File]spastyle.doc
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Employing electronically-commutated motors (ECMs), the input of a variable speed heat pump resembles a large switch-mode power supply (e.g., 3 kW or more). The ECM is a dc brushless motor with stator construction similar to a three-phase ac induction motor. The stator winding current is sequenced and switched creating a rotating magnetic field.

[DOC File]3 - University of Minnesota
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Now calculate the three-phase apparent power, S3( = (3 VI and compare the result to the three phase sum calculated in 7) above. Do they compare favorably? Using the Resistance Module, add 400 Ohms of resistors to each phase of the WYE load, in series with the inductors as shown below.

[DOC File]Mechatronics I Laboratory Exercise 7 - University of Utah
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The phase difference, (, is defined by the following equation: (3) where tp1 is the time associated with the peak of the first signal, tp2 is the time associated with the peak of the second signal. Figure 3: Measuring the phase difference between signals. Pre-lab Exercise

[DOC File]F U L L – T I M E D I P L O M A C O U R S E I N
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Polyphase Circuits: 3 phase system – Phase sequence – Advantages over 1-phase system – Inter connection of 3-phase sources & loads – Relation between line & phase values of voltage & current both in star & delta connections – 3-phase power – Problems on balanced as well as unbalance (3-phase 4-wire) system.

[DOC File]Engineering School Class Web Sites
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Calculate normalized phase power (p) for each P using Equation [F], i.e., p = P/[V2/X]. Make a table showing (fm, V, P, and p. Plot the experimental (fm values as a function of normalized phase power (p) to the synchronous motor for each of the power settings.

[DOCX File]EMET 410 Lab Manual
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Section 3.3 gives step-by-step instructions to simulate the converter in Simulink. In section 3.4, the Simulink model is modified for real-time implementation and step-by-step instructions to design the control panel using Control-desk are given. 3.2 Theoretical Background of DC Switch-mode converter. 3.2.1 Switching Power-Pole Building Block

[DOC File]Induction Motor Design (3-Phase)
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Output Equation: - It gives the relationship between electrical rating and physical dimensions (Quantities) Output of a 3 phase IM is . Where . VPh1= Input phase voltage. IPh1= Input Phase current . Or equation (1) can be written as . Where. f = frequency of supply =PN/120. P =No of Poles. N =Speed in RPM. Kpd1= Winding factor =0.955

3 phase motor power equation