Akademik Veri Yönetim Sistemi
Journal of Naval Sciences and Engineering, cilt.21, sa.2, ss.221-247, 2025 (Hakemli Dergi)
With the increasing number of electric vehicles charging stations and
the growing variety of electronic components requiring high power, the
demand for boost-type converters is also on the rise. Boost converters,
which are used to supply power to electronic components that require
high operating voltages, have in recent years been combined with Power
Factor Correction (PFC) control methods in order to minimise conversion
losses and improve power factor. As a result, power factor correction
boost converters have been developed. These converters, which provide
both voltage boosting and power factor correction, are typically
designed with a control mechanism tailored for a nominal output power
and are expected to operate under that specific condition. However,
considering that such converters are often used in applications like
charging stations, where the output power varies depending on the
battery's state of charge, it can be said that the output power is
generally not fixed, but variable. This variability reduces the
efficiency of the PFC controller and leads to a drop in the power
factor.
In this study, a new boost-type PFC control algorithm has been designed
to prevent power factor degradation in boost converters under variable
load conditions. Both the newly developed control algorithm and one of
the most widely adopted modern control algorithms-the Continuous Current
Mode (CCM) PFC boost converter control algorithm-were simulated
separately in the PSIM environment. In simulations conducted for a 400 V
output under varying load conditions, it was observed that the newly
developed Variable Load Compatible Power Factor Correction Boost
Converter provided superior power factor correction across all load
levels compared to the conventional method. It was also noted that the
new method was equally effective in maintaining a stable output voltage.