Research on Multi-module Carrier Phase Shift Synchronous Control Strategy for Power Electronic Traction Transformer

被引：0

作者：

Zhao S. ^{[1
]}

Liu J. ^{[1
]}

Chen S. ^{[1
]}

Ai Y. ^{[1
]}

Shi Y. ^{[1
]}

机构：

[1] School of Electrical Engineering, Beijing Jiaotong University, Beijing

来源：

Tiedao Xuebao/Journal of the China Railway Society | 2022年 / 44卷 / 11期

关键词：

Carrier phase shift; Carrier synchronization; Distributed control system; Dual active bridge converter; Power electronic traction transformer;

D O I：

10.3969/j.issn.1001-8360.2022.11.005

中图分类号：

学科分类号：

摘要：

Power electronic traction transformer is the core component of the next generation of high energy efficient traction drive system. The existing power electronic traction transformer with distributed control system has abnormal PWM pulse during carrier synchronization due to communication delay, which leads to the sudden change of inductance current. In response to this problem, having analyzed the generation mechanism of abnormal PWM pulse in power electronic traction transformer based on dual active bridge converter, this paper proposed a power electronic traction transformer multi-module carrier phase-shift synchronization control strategy, which can eliminate the communication delay error of synchronous signal by triggering SCL clock in real-time, based on which the principle of setting the synchronization frequency was given, further eliminating the synchronization deviation. The proposed multi-module carrier phase-shifting synchronous control strategy can reliably generate the PWM drive pulse and ensure the normal carrier synchronization of each module of the power electronic traction transformer. A system simulation model was constructed to simulate the proposed multi-module carrier phase-shift synchronization control strategy. The experimental platform of a five-unit power electronic traction transformer was designed and built to study the above control strategy. The simulation results are consistent with the experimental results, which verify the correctness and effectiveness of the proposed multi-module carrier phase-shifting synchronous control strategy for power electronic traction transformer. © 2022, Department of Journal of the China Railway Society. All right reserved.

引用

页码：37 / 44

页数：7

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