General Purpose Power Electronic Converter

Create a control algorithm to integrate four each 15kW units to function as a continuous 60kW unit.

Background
The final goal of our project is to create a high efficiency programmable power electronic converter. Since it is difficult to get the eventual accomplishment, our team decides to do some early research for this project. Our clients hope that the input and output values can be adjusted between 100V and 600V; also, the efficiency should be at least 94%. In addition, Overcurrent protection and Overvoltage protect is required Due to safety reason, we starts with smaller input values and output value. Also, we decides to research forward converter for this project. The forward converter is a DC/DC converter that uses a transformer to increase or decrease the output voltage and provide galvanic isolation for the load. With multiple output windings, it is possible to provide both higher and lower voltage outputs simultaneously.

Design Goals
Power-Panda team has decided to adopt forward converter for the project. Full-bridge converter is abandoned by us. The first goal of this project is that building a real forward converter to test and verify our schematic is correct. If the real converter can work correctly, we will build an integrated forward converter (2 single forward converter integrated) In addition, after finishing building integrated forward converter, we will create a control algorithm for it.

Specifications
input voltage source: 12-36V  (adjustable values) output voltage values: 24V(fixed values) Output power 100W converter The intergraded converter should provide 400 W power(4 DC-DC), and the efficiency should be equal or higher than 94%. Our converter should be placed on a breadboard One single converter range :8cm x 15cm integrated converter range :32cm x 60cm

Project Learning
The most interesting characteristic is that we decided to use CHIP LT8310.We can avoid some defects when we use the forward converter with chip.The traditional forward converters have low efficiency; also, it is hard to create simulation schematic. LT8310 chip can bring High efficiency and short-circuit overcurrent protection for us. Our future research will focus on: 1.How to increase max efficiency in integrated forward converter 2.How to increase max efficiency at each point (from 0 to 400W) 3.Control Algorithm 4.Load balancing by using economic dispatch

Designs
Circuit of Forward Converter



Calculation Part

Simulation Results



Design Procedures
1 Choose a type of DC-DC converters(Our team chooses Forward & Full Bridge)

2 Make Simulation of Converters

3 Do some calculations about efficiency

4 Create a real circuit and test the circuit

5 Create Control Algorithm to find the highest efficiency

Project Budget
 

Content of meeting