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# Design a DC battery charger for an electrical vehicle which has a 96 V (nominal) BLDC hub motor which is plugged directly from grid to EV.

Electrical Engineering

### EE 309 Analog Electronics and Design Homework

Spring 2022-2023 Duration: 25/04/2023 15:00 – 28/04/2023 15:00

Q1 Q2 Q3 Q4 TOTAL
25 25 25 25 100

•
• As depicted in the figure, input voltage is 120 Volts (RMS) and diode drops are 0.7 Volts. Design this circuit with given two outputs and calculate turns ratio of transformer.
• 10 V
• 100 V

• Consider a circuit using Si diodes and 10 k ohms resistors. Design this clipper circuit with output ranges below;
• -0.7 V and above
• +2.1 V and above
• ±1.4 V
• As given in the figure a clamper circuit with the input signal Vi is proposed to design. Determine the output voltage with the exact solution step by step. Sketch transfer characteristic VO versus V

• A rectifier circuit with the excitation of is given. Assume the diodes are made of Silicon.Design this circuit and determine the turns ratio, PIV rating for the peak output voltage of;
• 25 V
• 100 V
• Check the design and provide the results with Spice

• A regulator curcuit needs to be designed with an input power supply which has a nominal value of and can vary by ± %25 and nominal output voltage of 10 volts. For this purpose a zener diode is employed with specifications given; power rating of 1 W, 10 V drop at , output load current is to vary between -20 mA and zener resistance of
• If the minimum Zener current is to be , determine the required
• Determine the maximum variation in output voltage
• Determine the regulation percent
• For the given network, input voltage having a maximum amplitude of  is applied to the circuit. (Note: All the diodes are Si).
• Sketch the output and calculate the dc (average) value of the output for the network.
• Draw, simulate and analyze the circuit by using PSpice

• A diode circuit is given with the input signal beside. (Use the resulting output voltage level of part a as Vp in this question)
• Determine the output voltage with the exact solution step by step.
• Sketch transfer characteristic VO versus Vi
• Draw, simulate and analyze the circuit by using PSpic

A GaAs diode with  is given as the configuration on figure

• Obtain analytical solution for each steps
• Draw output voltage waveform.
• Choose a resistance value for R(Select a value which provides practical rule)and plot wave form of current over resistance
• For which specific applications this design can be applied write your comments
• Draw, simulate and analyze the circuit by using PSpice

• [Research Question] Design a DC battery charger for an electrical vehicle which has a 96 V (nominal) BLDC hub motor which is plugged directly from grid to EV.
• Which type(s) of diode circuit(s) is(are) used for this device.
• Sketch the input and output waveforms
• List the needed components for this design.
• Draw the example circuit.
• Explain the duty of each component.
• Draw, simulate and analyze the circuit by using PSpice.

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