Power-Linked Predictive Control Strategy for Power Electronic Traction Transformer

Power electronic traction transformer (PETT) is a module-cascaded converter with high-frequency-link technology to realize high-power conversion. A typical structure of PETT contains a single-phase cascaded H-bridge rectifier in the first stage and several dual active full-bridge (DAB) dc-dc convert...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on power electronics 2020-06, Vol.35 (6), p.6559-6571
Main Authors: Zhao, Nan, Liu, Jianqiang, Ai, Yu, Yang, Jingxi, Zhang, Jiepin, You, Xiaojie
Format: Article
Language:English
Subjects:
Cascaded H-bridge (CHB) rectifier
Control systems
dual active full-bridge (DAB) dc–dc converter
Electric bridges
Electric converters
Electric potential
Energy conversion
Experimentation
Load modeling
Load resistance
Modules
Performance enhancement
performance improvement
power electronic traction transformer (PETT)
Power electronics
power-linked predictive control (PLPC) strategy
Predictive control
Pulse width modulation
Reactive power
Rectifiers
Strategy
Traction
Transformers
Variation
Voltage
Voltage control
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Power electronic traction transformer (PETT) is a module-cascaded converter with high-frequency-link technology to realize high-power conversion. A typical structure of PETT contains a single-phase cascaded H-bridge rectifier in the first stage and several dual active full-bridge (DAB) dc-dc converters in the second stage. For PETT adopting such a complex topological structure, the control strategy also becomes complicated and should be carefully designed. In this article, a power-linked predictive control (PLPC) strategy for PETT is proposed based on the predictive controls of the H-bridge rectifier and DAB dc-dc converter. A power link is brought into the control strategy to connect the H-bridge rectifier with a dc-dc converter, through which the input power of PETT can match the output power. Moreover, the voltage balance control and power balance control are also combined with predictive control by the PLPC strategy. Using such a strategy, the fluctuation of the H-bridge rectifier dc voltage is suppressed, the circumfluence among modules is reduced, and the dynamic and steady-state performances are both improved compared with traditional strategy. Simulation and experimentation platforms with both resistance load and motor load are built to show the effectiveness and correctness of the PLPC strategy.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2019.2952914