Assignment #3

Power Electronics

Ge 10:1 m Thanks Any help will be appreciated. S BL • I am doing a AC DC 12 W Regulated power supply with 110 vrms and 60HZ as an input, and I need an output of 6v and 9 V. I have the designed already: the step-down transformer, Resistor as a current limiter to protect the Zener diode, a capacitor for the ripple voltage, and a 2 state switch ( when the switch is closed to the RL will give 9 V and when is closed to the S will give 6V as an output). • I need some support with some calculations to find PIV for each diode // Average Power// some calculations in how to find the values for the resistors and capacitors to accomplish the desire output // and some calculations for the ripple voltage. Note: the Zener is regulated to 9v. I know the RL>R to get the desire output.

Calculate the total current of a circuit with a 9.5 V voltage source connected in series with a directly biased silicon diode and a series resistor of 440 Ω. Consider the second approximation of the diode where it is considered to be connected to a battery in series. Units of the response in milli amperes.   Note: I put the original exercise in Spanish, so that it is better understood. Explain step by step, please.

Three phase Bridge rectifier operated from a 380V, 50Hz source throughout three-phase Y/Y connected transformer with ration 2:1. The load current has continuous character with negligible ripples and average thyristor current of 15A. The circuit inductance per phase is 1.2mH. The rectified voltage due to overlapping angle is 90 % of that voltage when this angle is neglected. 1- How much will the voltage drop be due to circuit inductance * 2- How much will the dc average voltage Vdc(alpha) be. 3- How much will the firing angle be ? 4- The overlapping angle. 5- How much is the percentage change of the output dc power if the thyristors T2, T4 and T6 are replaced by three diodes D2, D4, D6. 6- How much will be the maximum RMS phase current for the mentioned in previous task circuit ( semi-converter). 7- If an additional of 1 mH inductances are added to the existing inductances in the phases , how much will the overlapping angle be. The dc load current is kept constant & the…

Can you answer the question step by step with clear writing ?

Exe: The single-phase bridge rectifier has an RL Load and an ac source, with R = 10Ω andL = 10mH. The peak value of the source is Vm = 100V at 60 Hz. The expressions of voltage andcurrent outputs are:(a) Determine v0(t) and i0(t) with two ac terms (n=2 and 4)(b)  Determine the power absorbed by the load.

Quèstion 14 Power supply circuit is delivering 0.5 A and an average voltage 20 V to the load as shown in the circuit below. The ripple voltage of the half wave rectifier is 0.5 V and the diode is represented using constant voltage model. The smoothing capacitor value is equal to L-Dc こosA 22V rmsら 50H2 RL VL-DC =20V 7. 0.01 F 0.02 F 0.0167 F None of the above

Series circuit on breadboard_9Volt battery source Can you draw where to connect: the multimeter leads,220 ohm resistor, 1N914 forward biased diode,jumper wires. I need to produce near 37mA and have failed to do so but only can produce 10.1mA.

Shown in the figure is a schematic of a power electronics circuit. a) Identify the power semiconductor devices included in the circuit b) sketch their symbol with terminal identification c) explain the function of power semiconductor devices included in the circuit 120kn 240 V 60 Hz 2N2574 ODeg 1.0kn ECG6412 :100nF