For a single-phase one-quadrant boost rectifier with power factor correction, the input AC voltage source Vin=220 V (RMS value), f=50 Hz and the output DC voltage is kept constant at Vd=350 V. The converter is supplying a DC motor drive (DC-DC converter + DC motor) having the following parameters: the nominal voltage, power and speed of the motor Vn=500 V, Pn=2500 W, nn=2000 rpm. a) Design the DC-DC converter of the DC motor drive, finding the key parameters, such that the converter is able to modify the motor speed in the range n=(0.5 ÷ 1) nn . Assume that the converter is working at the switching frequency fs=100 kHz, the inductor current ripple is Ai̟=10%, the voltage output ripple is Avo=± 2%. The motor is a PM DC motor working with a constant mechanical torque over the speed range. Neglect the losses and consider the efficiency 100%.

For a single-phase one-quadrant boost rectifier with power factor correction, the input AC voltage source Vin=220 V (RMS value), f=50 Hz and the output DC voltage is kept constant at Vd=350 V. The converter is supplying a DC motor drive (DC-DC converter + DC motor) having the following parameters: the nominal voltage, power and speed of the motor Vn=500 V, Pn=2500 W, nn=2000 rpm. a) Design the DC-DC converter of the DC motor drive, finding the key parameters, such that the converter is able to modify the motor speed in the range n=(0.5 ÷ 1) nn . Assume that the converter is working at the switching frequency fs=100 kHz, the inductor current ripple is Ai̟=10%, the voltage output ripple is Avo=± 2%. The motor is a PM DC motor working with a constant mechanical torque over the speed range. Neglect the losses and consider the efficiency 100%.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Similar questions

Three Phase Full-Wave Fully Controlled Rectifier when highly Inductive load is connected: i. Draw graphs when α = 30, 60, 90, 120, 150 degrees. ii. Derive the output average voltage. iii. Derive the output rms voltage.
A half-wave rectifier circuit has an input voltage of 60V for the entire swing of the input signal from the secondary winding of the transformer. If the load resistance is 900 and a shunt capacitor is connected therein: 1. Draw the circuit 2. Solve the following unknown values. a. The peak voltage V b. the average output voltage Volave) c. the average load current lolavel, d. the rms load voltage Volcms), e. the rms load current loma) f. the ripple factor RF of the output voltage, g. the rms ripple voltage Vrirms) h. the average diode current ID(ave) i. the rms diode current Ipicms), j. the peak inverse voltage PIV of the diode, k. the average output power Polac 1. the DC output power Po(de) m.the frequency fr of the output ripple voltage, n. the input power factor PF.
For the single phase half-wave rectifier, the source is a sinusoid of 120 V rms at a frequency of 50 Hz. The load resistor is 5ohm. Determine (a) the average load current, (b) the average power absorbed by the load and (c) the power factor of the circuit.
6. A simple capacitor filter fed by a full-wave rectifier develops 14.5 V dc at 8.5% ripple factor. What is the output ripple voltage (rms)?
EX2: (Buck dc-dc converter. Evaluation of the output voltage ripple) A buck converter has the following specifications: Vin= dc input voltage =50 V, D = duty cycle=D0.4, L=400 µH, C=100 µF f,= switching frequency = 20 kHz, R=20 2 Assuming that the converter is ideal, calculate: a) The output voltage. b) The maximum and minimum inductor current values. c) The output voltage ripple.
B. A single-phase fully controlled, full-wave, bridge rectifier has a source of 230 V rms at 50 Hz, and is feeding a load R=25 and L - 10 mH. The firing angle a= 45° and the current extinction angle B-230". It is required to: (a) Sketch the appropriate load voltage and load current waveforms. (b) Determine whether the current is continuous or discontinuous. (c) Determine the average load voltage and current. (d) Determine the rms load voltage and current. (e) Determine the efficiency of the converter
Question 1 a) Compare the holding current with the latching in SCR. b) A 400 V/50 Hz three-phase system is loaded with an ideal three-phase diode rectifier having a completely smooth output current of 50 A. An ideal three-phase thyristor converter is connected in parallel with the diode rectifier. The output current of the thyristor converter is also 50 A and completely smooth, but the output power of the thyristor converter is zero. i. Draw the waveforms of the input currents to the two converters and the the sum of the two currents. ii. Calculate the power factor for the total load. c) The shown converter in Figure 1 operates in continuous conduction mode. Assume the components are ideal. i, (1) in (t) v ic (t) Vo (t) iL (t) +v (t) - is (1) "; (1) Figure 1 i. Sketch of i (t) and VL(t) for one switching period Ts. ii. Determine the DC voltage gain Vo/Vg as function of duty cycle, D.
-,- three phase half wave controlled rectifier with resistive load (R=10 2) if the input supply voltage is (Vrms = 380 Volt and f= 50 Hz) and the trigger angle (a = 60°), then determine the followings:- a) Draw the rectifier circuit. b) Draw to scale the input voltage, the load voltage and the current waveforins. c) Calculate the average value of the output voltage.
9- Buck type DC-DC converter, if the input voltage is 789 V and the occupancy-backlash ratio is 0.9, which of the following options is the correct load voltage. a) 710.1 etc) None c) O 7101 V d) O 78.9 V
A three phase full wave rectifier is shown below along with the peak input phase voltage Vm=169.7V. The load is purely resistive. The rectifier delivers Ipc = 100 A and the source frequency is 60 Hz. The DC output voltage is Vpc=280.7V and. The RMS transformer secondary current is equal to 81.72A, the output RMS voltage is equal to VRMS=280.93V and the output resistance is equal to 2.8070. The TUF would be equal to: Secondary a平a字a辛 R 太D。太D。太D. Select one: 0.875 Ob. 0.955 O C. 0.551 O d. 0.432 Compared with power transistors, thyristors have the following characteristic
i need the answer quickly
I need to power a 15kw/20HP DC Motor with a rectified 24VDC from a step down transformer with input of 11A and output of 103A/12VAC -24VAC. What is the required Capacitance needed to ensure ripples are cleared and also gives a steady VDC of 24VDC to the DC Motor to run quite well. Please, all note that the rectifier is a full wave rectifier of 100A...