Example 1: Switch-mode inverter (one phase-leg, half bridge) A general analysis of the switch-mod...
bridge oad DC DC Vload DC For a single-phase DC-AC inverter with an RL load at the output. It is switching using the bipolar SPWM method with the desired fundamental frequency of 400 Hz and the switching frequency of 20.4 kHz. Here the modulation index is 0.6, input DC is 200 V, load R-5 Ω and L 2 mH a. What's the RMS value of the fundamental component of the output voltage across RL? b. What's the RMS value of...
Q1- The three-phase converter circuit of Fig. 1, Vd 300 V, is applied with PWM switching (mo 0.5, m 39), and the fundamental frequency is 50 Hz. Calculate the rms values of the fundamental-frequency voltage and some of the dominant harmonics in the line voltage (line-to-line). The generalized harmonic lookup table is given below the diagram. S1 S5 dc Fig. 1 Table 8-2 Generalized Harmonics of vL for a Large and Odd m/ That Is a Multiple of 3 0.2...
For the full-bridge inverter in Fig. 6, the switching frequency f, is 1,500 Hz. The DC voltage, V, is 600 V. Output voltage is sinusoidal voltage with a frequency equal to 60 Hz. The load is connected between leg A and B 5. a. Prove that the peak voltage of the fundamental frequency component, (Vo)m (V). b. Find the angle between the phasors vo and eafor-0.8, P-1,000 W and Q-500 w peak a Lla A + B+ VO B+ L=...
A single-phase H-bridge topology below is operated with the input dc voltage Vdc=200 V, modulation index, ma=0.6 and switching frequency fs=1950 Hz. The fundamental frequency of the generated AC voltage is 50 Hz. a) Calculate the rms value of fundamental component b) Calculate the rms values of most significant harmonics (with at least %10 of amplitude of the biggest harmonics) for the pole voltage v10 indicated on the inverter c) Calculate the rms voltage value for the fundamental and for...
QUESTION 2 (Total 12.5 Marks) PWM switching scheme is used for a single phase inverter with m 36 and mo0.7 and Vd 230 V (see the table in the formula sheet). Calculate the RMS values of the fundamental voltage and mf, my+2, 2m 1 harmonics (stating any approximation) if (a) a bipolar modulation scheme is used, (6.5 marks) (b) a unipolar modulation scheme is used. (6 marks) S1 S3 Load S4 Circuit diagram QUESTION 2 (Total 12.5 Marks) PWM switching...
A single-phase full-bridge inverter as shown in Fig. 6.3(a) in the textbook has Vs = 98 V (DC), a load resistance of R-3 Ω, an output frequency off, = 2 kHz, and a modulation index of M = 0.9. It uses an uniform PWM as shown in Fig. 6.12(a) and has 5 pulses per half-cycle. Determine (a) the rms output voltage Vo, (b) the output (rms) power Po, (c) the average input current Is, (d) average current through each transistor...
Power electronic Design a Switched Mode Power Supply (SMPS) by following pattern. Finally you should reach a DC output voltage of 48 V and 20 Ampere. 1. initially start designing an uncontrolled single-phase rectifier supplied by 220 V., 50 Hz grid. A parallel capacitor is connected to the output. Draw its waveform and calculate the average value of the output voltage. Evaluate the input Power-Factor and Crest-Factor problems. (20) a. In order to avoid the input Power-Factor and Crest-Factor problems,...
In this part of the term paper, design a single-phase switch-mode DC power supply with a forward converter. Provide answers to the questions below Please combine the single-phase full-wave rectifier from part two of your term paper with a forward converter to produce a switch-mode DC power supply, as shown below. The output of the bridge rectifier serves as input to the forward converter L1 Np: N BH621BH62 D, V1 Load C1 100p 45 Vrms D3 BH62 18H62 D4 Control...
of an electromagnetic wave propagating in a vacuum is 65 x 10 Hz. See the table for problem 1 1) To what part of the electromagnetic spectrum does this wave a) blue light 2) The electromag a)perpendicular to b) parallel to the the magnetic field b) green light netic field of the electromagnetic wave is d) violet light c) antiparallel to the d) paralel to the wave velocity magnetic field magnetic field The speed of light in a medium is...