A High-Frequency High-Voltage Excitation Melting Ice Power Design

2013 ◽  
Vol 325-326 ◽  
pp. 271-276 ◽  
Author(s):  
Yu Sheng Zhou ◽  
Long Zeng ◽  
Pei Yao Chen ◽  
Zheng Pan
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
High Frequency ◽  
Frequency Conversion ◽  
Control Method ◽  
Frequency Converter ◽  
Electric Energy ◽  
Notch Filter ◽  
Excitation Power ◽  
Conversion Function

High-frequency and high-voltage excitation melting ice device is mainly composed of the excitation power supply and the notch filter device, which can realize the power transmission line melting ice without power cut. This paper applied power electronic frequency conversion technology to design a excitation melting ice device with 18KV/40KHZ.This device is adopted PWM control technology, and is mainly composed of the rectifier, controller and inverter. For the small frequency converter, the high-voltage frequency conversion function can be achieved through each phase in series divided voltage method. According to the 1000 kV AC ultrahigh voltage transmission lines, a melting ice model is set up by using SIMULINK simulation. The results show that this device can generate stable 18KV/40KHZ excitation melting ice electric energy in 30ms,and the control method is convenient and simple, the range of frequency and voltage modulation is big characteristics.

Powerful High-Voltage DC Power Sources with High-Frequency Conversion

2019 ◽  
Vol 62 (2) ◽  
pp. 169-174
Author(s):  
V. G. Goldort ◽  
V. N. Ishchenko ◽  
N. N. Rubtsova
Keyword(s):  
High Voltage ◽  
High Frequency ◽  
Frequency Conversion ◽  
Power Sources ◽  
Dc Power

Application of Fieldbus and Frequency Conversion Technology in Air-Condition VWV System

2011 ◽  
Vol 90-93 ◽  
pp. 3068-3072
Author(s):  
Gui Rong Wang ◽  
Cong Zhi Zhang
Keyword(s):  
Pid Control ◽  
Frequency Conversion ◽  
Flow System ◽  
Frequency Converter ◽  
Electric Energy ◽  
Constant Flow ◽  
Water Pump ◽  
Variable Flow ◽  
Rotating Speed ◽  
Chilled Water

This paper presents a method which uses LonWorks control system and frequency converter in Central Air-Condition chilled water variable flow system. In this system, the output of frequency converter can be altered by augmenter PID control rule which is used in control of invariable difference in temperature between water supply and backwater, and the rotating speed of water pump can be changed correspondingly, so when the user load is small ,the electric energy consume can be reduced. The effect of energy-saving was visible comparing with the conventional Air-Condition chilled water constant flow system.

Analysis on the Infrared Imaging Diagnosis Technology for the Insulation State, Fault Types, and Components of Coupling Capacitor

2013 ◽  
Vol 416-417 ◽  
pp. 1064-1067
Author(s):  
Le Le
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
Infrared Imaging ◽  
Electric Energy ◽  
Chinese Economy ◽  
Electric Power System ◽  
Imaging Diagnosis ◽  
Electric Transmission ◽  
Electric Transmission Lines ◽  
Coupling Capacitor

Along with the continuous development of Chinese economy, the power consumption continues to rise in China, and many high-voltage electric transmission lines are constantly put in construction. Among them, coupling capacitor is a major coupling device in the carrier communication of the power frequency high-voltage lines, and also a device that has been widely used for measuring and extracting electric energy, and controlling high-frequency protection in the electric power system. However, there are many problems in the application of coupling capacitor to high-voltage electric transmission lines. In the following, some common problems in the application of infrared imaging diagnosis technology to the coupling capacitor in high-voltage electric transmission lines are tested, so that the corresponding problems are found timely and accurately and also the right processing is made.

Infineon Microcontroller Based Frequency Converter Design

2011 ◽  
Vol 383-390 ◽  
pp. 1600-1604
Author(s):  
Xue Cong Lv ◽  
Wen Feng Li
Keyword(s):  
High Frequency ◽  
Frequency Conversion ◽  
Pulse Width Modulation ◽  
Frequency Converter ◽  
Control Design ◽  
Voltage Waveform ◽  
Converter Design ◽  
Microcontroller Unit ◽  
Hardware Circuit ◽  
Sinusoidal Pulse Width Modulation

In this paper, we implement a real-time detection and automatic control design for AC-DC-AC converter based on XC878M microcontroller unit (MCU). By generating the sinusoidal pulse width modulation (SPWM) signal directly using the microcontroller, the hardware circuit is simplified and the power factor and efficiency of the system is greatly improved. Further, frequency conversion techniques are applied into our design. After the high frequency modulation and compressed the high frequency harmonics, the proposed design can produce high-quality voltage waveform, thereby decreasing the loss of the converter.

Analysis and Design of 3.3 kV IGBT Based Three-Level DC/DC Converter with High-Frequency Isolation and Current Doubler Rectifier

2009 ◽  
Vol 25 (25) ◽  
pp. 103-108
Author(s):  
Dmitri Vinnikov ◽  
Tanel Jalakas ◽  
Indrek Roasto
Keyword(s):  
High Voltage ◽  
High Frequency ◽  
Power Converter ◽  
Rolling Stock ◽  
Analysis And Design ◽  
Auxiliary Power ◽  
Igbt Modules ◽  
Isolation Transformer ◽  
New Generation ◽  
Generation Power

Analysis and Design of 3.3 kV IGBT Based Three-Level DC/DC Converter with High-Frequency Isolation and Current Doubler RectifierThe paper presents the findings of a R&D project connected to the development of auxiliary power supply (APS) for the high-voltage DC-fed rolling stock applications. The aim was to design a new-generation power converter utilizing high-voltage IGBT modules, which can outpace the predecessors in terms of power density, i.e. to provide more power for smaller volumetric space. The topology proposed is 3.3 kV IGBT-based three-level neutral point clamped (NPC) half-bridge with high-frequency isolation transformer and current doubler rectifier that fulfils all the targets imposed by the designers. Despite an increased component count the proposed converter is very simple in design and operation. The paper provides an overview of the design with several recommendations and guidelines. Moreover, the simulation and experimental results are discussed and the performance evaluation of the proposed converter is presented.

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