Digital Implementation of 0.5 kW Integrated Power
Keywords:
Boost-converter; Digital implementation; Improved THD; Power factor correction; Two-switch DC-DC forward converterAbstract
Railway wayside signaling is a system used to control railway traffic safely, essentially to prevent trains from
colliding. Therefore it is required to have a reliable power supply to keep a healthy and sustainable rail network. The
methodology to develop the power supply presented in this project involves study and implementation of power factor
correction (PFC) boost converter integrated with two-switch DC-DC forward-converter for high voltage and high
frequency application using individual Microcontrollers.The proposed method confirms the efficient and reliable
operation of the integrated converters with the line side power factor maintained to near unity for various load
conditions.Total Harmonic Distortion (THD) in the input current is also considerably reduced in the proposed scheme.
This approach not only reduces the size of magnetic components, but also makes it possible to achieve a fully controlled
AC-DC-AC converter when further integrated with single-phase inverter.