A Novel Linear-Based Closed-Loop Control and Analysis of Solid-State Transformer

被引:1
|
作者
Cavdar, Metin [1 ]
Ozkilic, Selin Ozcira [2 ]
机构
[1] Piri Reis Univ, Dept Elect & Elect Engn, TR-34940 Istanbul, Turkiye
[2] Yildiz Tech Univ, Dept Elect Engn, TR-34220 Istanbul, Turkiye
关键词
solid-state transformer; high-frequency transformer; grid-connected power flow; power factor correction; DC-DC CONVERTER; DESIGN; VOLTAGE; FREQUENCY; STRATEGY; IGBT;
D O I
10.3390/electronics13163253
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
In this paper, a new linear-based closed-loop control method for a Solid-State Transformer (SST) has been proposed. In this new control method, individual current and voltage loops for each of the power conversion stages (AC-DC, DC-DC, DC-AC) are implemented. The feedback between the input and output control signals for each loop is achieved through the voltage on the DC link capacitors and the current transferred between the converters. This enables the SST to be controlled easily in a linear-based closed-loop manner without the need for complex computations. In order to evaluate the performance analysis of the proposed control system, a simulation of an SST with approximately 10 kVA apparent power was performed. Based on the obtained simulation results, the response time of the proposed control method for dynamic load variations was proved to be in the range of 40 milliseconds, and it has been observed that this method allows electrical power to be transferred from the load to the grid. The power factor value of SST under inductive load is measured to be approximately 99%, and the overall system efficiency is 96% and above, indicating that this proposed new control method has very high performance.
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页数:20
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