Constant voltage constant current power supply control system for Single-chip design

The design of a scanning magnet power-supply used in a 10MeV industrial radiation accelerator is presented in this paper. The consideration of linear magnetic field current and the principle of triangle wave modulator are included. In addition, the control system based on single chip and its anti-jamming scheme in industrial circumstance are also introduced. The scanning magnet power-supply can produce continuous triangle waveform current. The frequency can be adjusted by step length of 1Hz ranged from 20Hz to 50Hz, and the peak-to-peak current is 20A.

Download Full-text

The Control of Constant Current Source in Electrostatic Precipitators Based on Microcontroller

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.910.340 ◽

2014 ◽

Vol 910 ◽

pp. 340-343

Author(s):

Zi Sheng Zhang ◽

Xiao Dong Shi ◽

Li Fang Liu ◽

Zhan You Wang ◽

Deng Yuan Song

Keyword(s):

Control System ◽

Electrostatic Precipitator ◽

Collection Efficiency ◽

Current Source ◽

Control Process ◽

Pulse Signal ◽

Constant Current ◽

Single Chip ◽

Constant Current Source ◽

Electrostatic Precipitators

In order to improve the efficiency of electrostatic precipitators, a control system of constant current source based on Single Chip Microcomputer (SCM) is designed. In the control process, we use the pulse signal from microcontroller P1 port as digital signals of the switch. By changing the number of contact closure control, we achieve steady flow output of different magnitude. By using closed-loop feedback control, we achieve constant monitoring of dust concentration and ensure it compliance with outlet concentration of national requirements. The results show that microcontroller control system has a strong anti-interference, high accuracy, ease of programming, etc. Used in the electrostatic precipitator, collection efficiency can be further improved.

Download Full-text

Fly-Back Mode Constant Current LED Driver

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.530-531.1093 ◽

2014 ◽

Vol 530-531 ◽

pp. 1093-1099

Author(s):

Jia Zhi Yang ◽

Sheng Li Yi ◽

Fei Yang ◽

Cun Bo Jiang ◽

Xi Le Wang ◽

...

Keyword(s):

Power Supply ◽

High Efficiency ◽

Life Time ◽

Constant Current ◽

Constant Voltage ◽

Output Current ◽

Led Driver ◽

Current Feedback ◽

Low Load ◽

Long Life

LED driver plays an important role in unleashing many advantages of LED, such as high efficiency, long life-time. A constant current fly-back LED driver based on TOP222 is designed in this paper, and the transformer of the constant current power supply and the constant current feedback circuit are deeply researched. The experiment shows that, the output current of the LED driver is 1A, the output power is 10W, the power supply works in constant voltage mode within the low load situation. The result shows that the driver featured with good stability, constant-current characteristic, and high efficiency, is capable for driving LED.

Download Full-text

Constant-current, constant-voltage half-bridge resonant power supply for capacitor charging

IEE Proceedings - Electric Power Applications ◽

10.1049/ip-epa:20050338 ◽

2006 ◽

Vol 153 (3) ◽

pp. 343 ◽

Cited By ~ 33

Author(s):

M. Borage ◽

S. Tiwari ◽

S. Kotaiah

Keyword(s):

Power Supply ◽

Constant Current ◽

Constant Voltage

Download Full-text

Power-factor-corrected distortion-free constant-voltage constant-current AC power supply using variable capacitance devices

Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579) ◽

10.1109/pcc.2002.998094 ◽

2003 ◽

Cited By ~ 6

Author(s):

A. Katsuki ◽

T. Arai ◽

M. Matsushima

Keyword(s):

Power Factor ◽

Power Supply ◽

Constant Current ◽

Constant Voltage ◽

Variable Capacitance ◽

Ac Power ◽

Free Constant

Download Full-text

The Study on 45KW Range Extended Electric Vehicle Auxiliary Power Unit

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.556-562.2128 ◽

2014 ◽

Vol 556-562 ◽

pp. 2128-2132

Author(s):

Yun Long Guo ◽

Xu Dong Wang ◽

Jiang Long

Keyword(s):

Control System ◽

Electric Vehicle ◽

Power Unit ◽

Smooth Transition ◽

Constant Current ◽

Single Chip ◽

Control Plan ◽

Auxiliary Power Unit ◽

Auxiliary Power ◽

Communication Module

Range Extended Electric Vehicle (REEV) is a vehicle in smooth transition to pure electric vehicle. According to the functional analysis to REEV, propose the overall design of auxiliary power unit, develop an APU control system. This control system is based on infineon XC164CS Single Chip Microcomputer, use modular method, design and develops the data acquisition module, IGBT driver module, CAN communication module and conducts bench experiment to the system. The bench testing shows the system has high sampling precision, fast speed, good stability and easy to debug. Basic APU strategy control plan is designed to ensure electricity generation with first constant current, then constant voltage work mode, and can perform the fault diagnosis function, meet practical requirements, and achieve the expected control purpose.

Download Full-text