Programmable AC Power Supply

2019 ELE Engineering Design Project (DX02)

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Faculty Lab Coordinator

David Xu

Topic Category

Consumer Products / Applications

Preamble

The programmable AC power supply is an important testing equipment which enable the testing of varies electrical devices. In the development stage of power converters, the debugging and testing of power converters will be more efficient with the programmable AC power supplies.

Objective

The objective is to design a programmable AC power supply using class D amplifiers.

Partial Specifications

The specification include:
1) Maximum power: 1kW @ peak load
2) Output voltage: 0-60V (rms), single phase AC or DC
3) Frequency range: 0-400Hz
4) Waveform: sine, square, or programmable
The programmable AC power supply is powered by 120VAC, 60Hz outlet

Suggested Approach

The team should look at the kits of class D amplifier and design the other circuits around the amplifier:
1) The graphic LCD interface to accept the user input. The interface with touch screen is preferred.
2) A micro-controller which generates the arbitrary waveform to input of the amplifier
3) Design a measure system to measure the output voltage/current. The data should be sent to the micro-controller for display.
4) The algorithm to generate the waveform and measure the output voltage/current

Group Responsibilities

The group should response for designing the system including software and hardware.

Student A Responsibilities

Student A should investigate the class D amplifier and find the principle of operation. Student A also responses for the design of measuring circuits of the output voltage and current

Student B Responsibilities

Student B will design the micro-controller and program the controller to generate the required waveforms. The interface circuit between input of the amplifier and micro-controller is the responsibility of student B.

Student C Responsibilities

Student C will design the LCD interface to accept the user input and display the data from the measured voltage/current

Student D Responsibilities

Student D will program the micro-controller selected by student B for the algorithm.

Course Co-requisites

ELE637, ELE754