4 DECIMAL PLACES : 2. (a) Calculate the step angle of a single-stack, 4-phase, 8/6-pole VR stepper motor. (b) What is its resolution?
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4 DECIMAL PLACES :
2. (a) Calculate the step angle of a single-stack, 4-phase, 8/6-pole VR stepper motor.
(b) What is its resolution?
Step by step
Solved in 5 steps with 17 images
- [Electrical Machines and Power System] Discuss two design considerations when selecting a stepper motor.4 DECIMAL PLACES : 1. A stepper motor has a step angle of 1.8o. What number should be loaded into the encoder of its drive system if it is desired to turn the shaft ten complete revolutions?A 3-phase, 4-pole induction motor drives a conveyor which needs a constant torque over its entire operating speed range. The per-phase rotor resistance referred to the stator side is 0.74 2. The motor is fed from a 3-phase inverter-based adjustable speed drive, with a volt per hertz control scheme. When the fundamental component of the inverter line output voltage is 400 V (rms), 50 Hz, the motor operates at its rated speed of 1470 rpm. The electromagnetic torque produced by the motor can be approximated as: (a) Estimate the rated mechanical power output and air-gap flux of the motor. (b) It is proposed to reduce the power consumption of the drive by operating at half of the rated speed. Estimate the required fundamental line voltage and frequency of the inverter (c) Assess the effect of the stator winding parameters on the air-gap flux found in Part(a)
- (i) What is a stepper motor? (ii) Draw the construction diagram of stepper motor. (iii) Explain the working of stepper motor.A star-connected squirrel cage induction motor has the following parameters and rating: Rs = 2 ohm, Rr¹ = 3 ohm, Xs = Xr' = 3.5 ohm, V = 400V, 50 Hz, 1,380 rpm. It is driven by voltage source inverter which gives constant V/f control to induction motor. If the inverter frequency is variable from 10% of the rated frequency to base frequency. Calculate: (a) Frequency for a speed of 1,000 rpm and full-load torque. (b) Torque for a frequency of 35 Hz and speed of 950 rpm.Identification of the physical system components and system integration: draw ablock diagram representing the QUBE-Servo 2 system indicating all the variables, signals,and the control system components. Please could you show what the in detail block diaagrams are given that the input and output of the servocontrol system are:• input: voltage of the motor in V;• output: inertia disk angular position in rad.
- The parameters of a three-phase, 50 Hz, 6-pole, 400 V star connected induction motor are r1 = 0.3 ohm, x1 = 0.5 ohm, r’2 = 0.15 ohm and x’2 = 0.2 ohm. The voltage and frequency of the induction motor is controlled by a power electronic converter (inverter). Calculate the required inverter output frequency and voltage to drive the induction motor load at 0.2 the rated speed of the motor and calculate the current drawn by the motor for that case. The formula for the maximum slip is given below:Q.10/ Design an H-Bridge DC motor driver circuit and explain its principle of operation.Answe completely and elaborate complete details. No plagiarism 1.) Define the working principle of AC Motor.2.) Define the different types of AC Motor.
- Q5) Explain the construction of AC servo motor, also draw its diagram. proper explanationA 32kW, 250V DC shunt machine has an armature and field resistances of 0.05Ω and 120Ω respectively. Determine the total armature power developed when working as generator delivering 32kW output.A 460 V, 60 Hz, 6 pole, 1180 rpm, Y-connected squirrel-cage induction motor has the following parameters per phase referred to the stator: Rs= 0.19 ohm, Rr' = 0.07 ohm, Xs = 0.75 ohm, Xr'= 0.67 ohm and Xm= 20 ohm. The motor is fed by a 6-step inverter, which in turn is fed by a 6-pulse fully-controlled rectifier. For the braking operation of the drive at a constant V/f ratio, calculate the speed for a braking torque of 350 N-m and the inverter frequency of 40 Hz. Options: 784 rpm 764 rpm 816 rpm 870 rpm