Solar DC to 110V, 60Hz / 220V, 50Hz AC power supply

2016 Engineering Design Project (SK02)

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Faculty Lab Coordinator

S. Karim

Faculty Advisor

Same as FLC

Topic Category

uP/Instrumentation, Power Engineering

Preamble

A power inverter is to be designed and built to convert DC from a solar panel to give output of either 110v, 60 Hz AC (North American household
1-phase supply), or 220V, 50Hz AC (Household 1-phase AC supply of most other countries). The DC from a solar panel will charge a 9V or 12v battery. This battery will, in turn, through an Inverter circuit, will convert either to 110v, 60Hz AC , or 220v, 50Hz AC supply used by most household appliances. The output of the inverter should display voltage, frequency and amperes drawn by the connected load. Partial Specifications are: Power rating: 1kW, Input voltage from DC battery: 9V or 12V, Output AC Voltage: 110V, 60Hz/ 220V, 50Hz, Voltage THD: <5%, Voltage regulation at full load: < 5%. For this project, knowledge of Energy Conversion (ELE637) and Power Electronics (ELE754) is required.

Objective

Build a regulated battery charger from a Solar panel, and to build an inverter circuit to give 110V, 60Hz AC/ 220V, 50Hz AC output

Partial Specifications

The regulated battery charger should display when it is charging and the
battery voltage at all times. The charger must not over charge the battery.
The inverter should have selectable mode of getting either 110V, 60Hz or 220V,
50Hz AC output. The output of the inverter should display the output voltage,
frequency and current when a load is connected.

Suggested Approach

Review the available solar panels in the market and find their characteristics. See the characteristics of 9V or 12V rechargeable batteries, specially, Lithium-ion batteries. Learn the configurations of an Inverter. Use MOSFET for the inverter circuit. Learn how a MOSFET works and how it is controlled.Review the theory of operation of a transformer to control voltage.

Group Responsibilities

Of the three students in the group, one student will select the appropriate solar panel and design the regulated charging circuit of the battery from the solar panel. One student will work on the inverter circuit,using MOSFETs, and another student will work on how to get from the inverter, 110V, 60Hz or 220V, 50Hz AC voltage supply. As a group,they will have to build a working prototype of the whole system.

Student A Responsibilities

Find the right Solar Panel for this project and build the regulated charging circuit for the Lithium-ion battery.

Student B Responsibilities

This student will design and build the Inverter circuit, using MOSFET.

Student C Responsibilities

This student will design a circuit about getting 110V, 60Hz or 220V, 50Hz AC output from the INverter.

Course Co-requisites