Home - JoshSilver8/ENGR454_Buck_Converter GitHub Wiki
Welcome to the ENGR454_Buck_Converter wiki!
This project was done in partial fulfillment of ENGR454 requirements at Walla Walla University. The focus of this project was to gain practical experience with modeling real-time systems as state space models followed by implementing feedback and observers to stabilize the system on a desired value. This project attempts to model a DC-DC Buck Converter in state space and stabilize the system on a desired output voltage by several methods:
- Hand Placing Poles
- LQR (Linear Quadratic Regulator)
- Full Order Observer
- Reduced Order Observer
- Kalman Filter
The process of modeling the system as well as the topics listed above are covered in the following wiki pages:
1. State Space Theory and Derivations
3. Discontinuous Conduction Mode
4. State Feedback: Hand Placing Poles
5. State Feedback: Linear Quadratic Regulator
Background Information
A DC-DC buck converter is a device used to step down voltages from a nominal value such as 12V, down to a desired value, such as 5V. The board we used for our experimentation is shown in Figure 1 below. A buck converter is essentially a DC transformer, stepping down the voltage by controlling the duty cycle of the switches. Further investigation into the model and assumptions is elaborated in the state space theory and derivation page.
Figure 1. Buck Converter PCB