The model reference adaptive control method of submerged arc welding power supply system

2016 ◽  
Author(s):  
Yunhui Liu ◽  
Xingang Miao ◽  
Chenxi Zhang
Keyword(s):  
Adaptive Control ◽  
Power Supply ◽  
Arc Welding ◽  
Power Supply System ◽  
Control Method ◽  
Submerged Arc Welding ◽  
Supply System ◽  
Welding Power Supply ◽  
Model Reference Adaptive ◽  
Submerged Arc

A Dual-Loop-Based Parallel Power Supply System

2013 ◽  
Vol 655-657 ◽  
pp. 1609-1613
Author(s):  
Yu Hao Zhang
Keyword(s):  
Power Supply ◽  
Output Voltage ◽  
Power Supply System ◽  
Control Method ◽  
Supply System ◽  
Digital Calibration ◽  
Numerical Control ◽  
Output Current ◽  
Loop Control ◽  
High Efficient

The dual-loop control method, in which inner-loop is the current and outer-loop is the voltage, is proposed to design a high-efficient precise numerical control parallel power supply system, it operates at input voltage of 24V, output voltage of 6-12V and output current of 0-4A. The current ratio of the parallel circuits can be set arbitrarily. Precise adjustment of output current and improvement of efficiency are realized by width modulation and synchronous buck-topology switching power supply, the output current error is smaller than 20mA and DC-DC conversion efficiency is up to 90%; to make output voltage error smaller than 30 mV and the current-sharing error smaller than 0.5%, digital calibration technology and PID control algorithm are used. In addition, this system is equipped with the function of overload protection, double-source redundant heat standby and turn-off, etc.

scholarly journals An Efficient Hybrid AC Metro Power Supply System Integrating PV With Grid

2019 ◽  
pp. 314-321
Author(s):  
J. Prince Joshua Gladson ◽  
A. Ravielango
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
Reactive Power ◽  
Control Method ◽  
Electrical Energy ◽  
Supply System ◽  
Urban Rail Transit ◽  
Traction Power Supply System ◽  
Traction Power Supply ◽  
Photovoltaic Plants

Metro is integral to the urban rail transit with the expansion of the city. Due to the tremendous power consuming of the traction load which is generally considered to be megawatt class, the attendant problems concerning energy-saving and emission-reduction cannot be neglected. An approach wherein the photovoltaic plants are connected into the metro traction power supply system to provide electrical energy is proposed in this paper. Given the deterioration of power quality brought about by PV connection, the photovoltaic inverter adopts output reactive power control method.

Sign in / Sign up

Export Citation Format

Share Document