Research on the Optimal Design of Weinberg Converter
AUTHORS:Qian Chen*a,
Peng Qiu*,
Yi Lu*,
Jinpei Du**,
Jiayi Wu***,
Haihong Yu*,
Because of its advantages of continuous input and output currents, stable transfer function, and high efficiency, the Weinberg
converter is used as battery discharge regulator. Its working principle under overlap and nonoverlap modes with stray parameters
is analyzed. Then a design method is proposed to optimize the parameters. In order to estimate the heat distribution, the power
loss is calculated according to the performance parameters, and then the efficiency trend is achieved toward the output current.
In addition, the experimental results verify the optimal design using a 600W prototype. © 2018 Institute of Electrical Engineers
of Japan. Published by John Wiley & Sons, Inc.
1.
Introduction
A power conditioning unit (PCU) is comprised of the main
error amplifier (MEA), the shunt regulator (SR), the battery
charge regulator (BCR), the battery discharge regulator (BDR),
and telemetering/telecontrol (TM/TC) [1–5]. PCU balances the
energy between each unit to keep the bus voltage constant so that
the electrical equipment of satellites can obtain stable power from
the main bus.
When the satellites cannot get enough energy from the solar
battery array in the shadow region or sunshine region, the batteries
provide energy for the bus to keep bus voltage constant. BDR plays
an important role during this process. Our aim is to study a highpower
and high-efficiency boost converter that is easy to expand
and realize current-sharing to achieve excellent bus performance.
Efficiency, complexity, and linearity play an important role in
choosing the topology of the BDR. The normal boost converter
is not suitable for BDR because of its low efficiency, instability,
and discontinuous output current. So far, the topologies that have
been used in BDR are [6–8] phase-shift full bridge (PSFB), Superboost,
Smart Add on, HE-Boost, and Weinberg.
VIEW FULL TEXT:https://onlinelibrary.wiley.com/doi/abs/10.1002/tee.22764
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