The Research on Main Circuit Parameters and its Control Law of TCR Single-Phase to Three-Phase Power Converter

2015 ◽  
Vol 740 ◽  
pp. 359-363
Author(s):  
Shi Long Chen ◽  
Lu Luo ◽  
Yan Wu Wang
Keyword(s):  
Power Factor ◽  
Single Phase ◽  
High Reliability ◽  
Power Converter ◽  
Control Law ◽  
Configuration Theory ◽  
Three Phase ◽  
Railway System ◽  
Electrified Railway ◽  
And Control

The TCR single-phase to three-phase power converter has been widely used in electrified railway system as its simple control raw and high reliability. The research on main circuit parameters and its control law is necessary to design suitable TCR single phase to three phase power converter. This paper analyses the main circuit of TCR single phase to three phase power converter, and acquires the parameters configuration theory of each element in main circuit and control law of converter when the power factor varies from 0.7 to 0.9.

scholarly journals Unified Power Flow Controller Based on Autotransformer Structure

Electronics ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 1542
Author(s):  
Hyun-Jun Lee ◽  
Dae-Shik Lee ◽  
Young-Doo Yoon
Keyword(s):  
Power Flow ◽  
Single Phase ◽  
Low Voltage ◽  
Power Converter ◽  
Unified Power Flow Controller ◽  
Phase System ◽  
Three Phase ◽  
Flow Controller ◽  
And Control ◽  
Power Flow Controller

This paper proposes a new unified power flow controller (UPFC) topology. A single phase of them system with the proposed topology consists of an N:2 transformer with a center tap at the low-voltage side and a power converter module comprising full- and half-bridge converters. A three-phase system can be implemented with three devices. While the conventional UPFC topology uses two three-phase transformers, which are called series and parallel transformers, the proposed topology utilizes three single-phase transformers to implement a three-phase UPFC system. By using an autotransformer structure, the power rating of the transformers and the voltage rating of switches in the power converter module can be significantly decreased. As a result, it is possible to reduce the installation spaces and costs compared with the conventional UPFC topology. In addition, by adopting a full- and half-bridge converter structure, the proposed topology can be easily implemented with conventional power devices and control techniques. The techniques used to control the proposed topology are described in this paper. The results obtained from simulations and experiments verify the effectiveness of the proposed UPFC topology.

A Novel Three-Phase Power Factor Correction with Digital Control

2013 ◽  
Vol 313-314 ◽  
pp. 365-369
Author(s):  
Yun Tao Yue ◽  
Zhi Hong Liu ◽  
Yan Lin
Keyword(s):  
Power Factor ◽  
Single Phase ◽  
Power Factor Correction ◽  
High Reliability ◽  
Unity Power Factor ◽  
Two Phase ◽  
Boost Converters ◽  
High Power Factor ◽  
Three Phase ◽  
Digitally Controlled

A new three-phase power-factor-correction (PFC) scheme is discussed using two single phase power factor correction circuit parallel connected. Two phase orthonormal voltage is produced by means of a auto transformer from a three phase input,fluctuation of neutral point by three single phase power-factor-correction circuit parallel connected is canceled,coupling interference is reduced among three phases,digitally controlled Power Factor Correction Boost Converters is adapted,input current wave sine with unity power factor suppress the secondary harmonic of input AC side is realized,voltage and low current stresses across each switch are reduced. Simulation and experimental results prove that it can achieve high power factor,low current,good capability of anti-interference and high reliability.

scholarly journals Windings Design for Single-phase Induction Motors Base on 4-phase Induction Motor (Case study: identical windings design)

2018 ◽  
Vol 215 ◽  
pp. 01023 ◽  
Author(s):  
Zuriman Anthony ◽  
Erhaneli Erhaneli ◽  
Zulkarnaini Zulkarnaini
Keyword(s):  
Induction Motor ◽  
Power Factor ◽  
Single Phase ◽  
Induction Motors ◽  
Three Phase ◽  
Motor Design

A 1-phase induction motor usually has a complicated windings design which compares to polyphase induction motor. In addition, a large capacitor start is required to operate the motor. It is an expensive way to operate the motor if it compare to polyphase induction motor. So, a new innovation method is required to make the motor more simple and cheaper. This research is purposed to study a new winding design for a single-phase capacitor motor. Winding design of the motor was conducted to a simple winding design like a 4-phase induction motor that has four identical windings. The comparator motor that use in this study was a Three-phase induction motor with data 1400 RPM, 1.5 HP, 50Hz, 380/220V, Y/Δ, 2.74/4.7A, 4 poles, that had the same current rating which the proposed method. The result showed that the motor design on this proposed method could be operated at 88.18 % power rating with power factor close to unity.

scholarly journals High-Efficiency Bi-Directional Single-Phase AC/DC Converter Design and Field Application for LVDC Distribution

Energies ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 2191 ◽  
Author(s):  
Juyong Kim ◽  
Hongjoo Kim ◽  
Jintae Cho ◽  
Youngpyo Cho
Keyword(s):  
Distribution System ◽  
Single Phase ◽  
High Efficiency ◽  
Low Voltage ◽  
Control Function ◽  
High Reliability ◽  
Power Converter ◽  
Field Application ◽  
Distribution Grid ◽  
Demonstration Site

This paper describes the design and field application of a high-efficiency single-phase AC/DC converter that is suitable for distribution lines. First, an appropriate AC/DC converter was designed in consideration of the environment of the application system. In order to ensure high efficiency and high reliability, we designed an optimum switching element and capacitor suitable for the converter, and the protection element of the AC/DC converter was designed based on these elements. The control function for the power converter suitable for an LVDC distribution system is proposed for highly reliable operation. The AC/DC converter was manufactured based on the design and its performance was verified during application in an actual low-voltage DC (LVDC) distribution grid through tests at the demonstration site. The application to a DC distribution system in an actual grid is very rare and it is expected that it will contribute to the expansion of LVDC distribution.

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