scholarly journals A Novel Parallel Current-sharing Control Method of Switch Power Supply

2014 ◽  
Vol 8 (1) ◽  
pp. 170-177 ◽  
Author(s):  
Chao Wu ◽  
Bingjuan Lu ◽  
Yuwang Ge
Keyword(s):  
Power Supply ◽  
Control Method ◽  
Current Sharing ◽  
Power Modules ◽  
Parallel Current Sharing ◽  
Switch Power Supply ◽  
Current Sharing Control ◽  
Switch Power ◽  
Parallel Current ◽  
Current Selection

A novel parallel current-sharing control method of switch power supply is proposed, on the basis of a detailed analysis of several common parallel current-sharing control methods and recent related patents. Only the current of switch power modules with maximum and minimum output current will be regulated, which is selected by the extreme current selection circuit in this method. Four cases with different extremum situation are discussed, and in each case, principles and equations are given. Finally the current-sharing control of switch power supply parallel system is realized. Experimental results show that the current-sharing method is reasonable and effective.

Research on Controlling Method of High-Power Electromagnetic Transmitter Power Supply

2013 ◽  
Vol 339 ◽  
pp. 614-620
Author(s):  
Fei Yu
Keyword(s):  
High Power ◽  
Power Supply ◽  
Control Method ◽  
Current Loop ◽  
Complex Environments ◽  
Loop Control ◽  
Transmitter Power ◽  
Current Sharing ◽  
Current Sharing Control ◽  
Electromagnetic Transmitter

High-power electromagnetic transmitter power supply is an important part of deep geophysical exploration equipment, especially in complex environments, where how to control the high accuracy and stable output of the power supply as well as the redundancy safety of the system become the key issue in its designing. A triple-loop control including inner current loop, outer voltage loop and load current forward feedback and a digitalized voltage/current sharing control method are proposed for the realization of the rapid, stable and highly accurate output of the system. System simulation and field geological exploration experiments demonstrate the effectiveness of the control method which could ensure both the systems excellent stability and the outputs accuracy.

Application of TMS320LF2407A and CAN Bus Technology in Flow Control of Inverter

2012 ◽  
Vol 591-593 ◽  
pp. 1659-1663
Author(s):  
Cui Fang Liu ◽  
Juan Ying Qin ◽  
Xing Qin
Keyword(s):  
Can Bus ◽  
Data Communication ◽  
Parallel Operation ◽  
Key Technology ◽  
Current Sharing ◽  
Parallel Current Sharing ◽  
Current Sharing Control ◽  
Parallel Control ◽  
Parallel Current ◽  
Alternating Voltage

As parallel operation of several single inverter modules, the alternating voltage outputted by the single inverter module should guarantee same frequency, same phase and equiamplitude. Otherwise, circumfluence will be caused in the single inverter module. The circumfluence not ecreases output capacity of the system but destroy the inverter in serious condition. So, restraint circulation is the key technology of inverter modules in parallel control. Based on the analysis of inverter modules in parallel control, this paper designs the parallel current sharing system of multi-inverter modules with TMS320LF2407A as the main hip, adopts the control strategy of “direct current sharing”, and achieves the data communication in multi-modules allel connection as well as the effects of multi-inverter odules in parallel current sharing control with CAN controller embedded in TMS320LF2407A.

Design of Redundant Parallel Power Supply Based on Integrated DC/DC Modules

2012 ◽  
Vol 229-231 ◽  
pp. 1568-1571
Author(s):  
Ran Li ◽  
Rui Ding ◽  
Zi Jian Min ◽  
Hui Mei Yuan
Keyword(s):  
Cost Effectiveness ◽  
Power Supply ◽  
Output Voltage ◽  
Fault Tolerant ◽  
Current Sharing ◽  
Parallel Current Sharing ◽  
Efficiency Cost ◽  
Simulation And Experiment ◽  
Parallel Current

Taking into account the efficiency, cost-effectiveness and reliability of power supply, redundant parallel power supply controlled by microcontroller could be a good solution for us. This paper analyzes principles and traits of parallel current sharing structure. Then a design of redundancy parallel current sharing structure is introduced, which is based on integrated buck chip LM2678 and microcontroller MSP430. The design has good fault-tolerant ability, and its output voltage can be adjusted easily. The capability and feasibility of this design has been verified by the simulation and experiment.

Design of Switch Transformer about the Push-Pull Switch Power Supply

2013 ◽  
Vol 341-342 ◽  
pp. 1266-1270
Author(s):  
Gang Wu ◽  
Yu Tang
Keyword(s):  
Power Supply ◽  
High Efficiency ◽  
Skin Effect ◽  
Circuit Simulation ◽  
Switching Power Supply ◽  
Switching Power ◽  
The Family ◽  
Switch Power Supply ◽  
Design Requirements ◽  
Switch Power

the push-pull switch power is a kind of form in the family. It has the characteristics of good voltage output, high efficiency, the simple circuit and so on. On the design of the push-pull switch power supply, the key and difficult point is the design of switch transformer. Taking the switch transformer of a push-pull switching power supply as the research object and based on the design requirements, this paper aims to realize the calculation of the coil turns in switching transformer. Meanwhile, under the consideration of the skin effect and the proximity effect and the choices of switch transformers wires and the methods of wires winding, the design of switch transformer of the push-pull switch power supply has been completed by circuit simulation and implementation.

A Study on the Thermal Management of the Electronic Parts and Systems

2004 ◽  
Author(s):  
Jyh-Tong Teng ◽  
Shih-Cheng Tsang ◽  
Jiunn-Shyang Chen ◽  
Tien-Juinn Fung
Keyword(s):  
Thermal Management ◽  
Power Supply ◽  
High Energy ◽  
Electronic Components ◽  
Desktop Computer ◽  
Notebook Computer ◽  
Parametric Studies ◽  
Switch Power Supply ◽  
Switch Power ◽  
Electronic Parts

The rapid developments of computer industry and semiconductor processes lead to high component density, high-energy dissipation, and compact volume of the electronic components in systems. Those are especially true for the high-energy density of the CPUs, resulting in high temperature rise for the electronic chips. To preserve the life span of the integrated circuits and to ensure their proper functions, it is necessary to develop proper means for evaluating the related thermal management in order to effectively dissipate the energy released from these electronic parts and systems. This project used Icepak 4.0, developed by Fluent, to determine thermal-fluidic behaviors of the notebook computer, desktop computer, and switch power supply, under an environmental temperature of 35°C. In addition, parametric studies were carried out to evaluate the distribution of temperature inside the systems under investigation and the effectiveness of overall thermal management for the systems. Icepak uses the unstructured grid generation technique for the three-dimensional modeling of the electronic components and systems. With the computational fluid dynamics (CFD) solver employed by Fluent and using the finite volume method, Icepak simulates the flow and temperature fields inside the system or component of concern. Parametric studies — including the positions for venting, the locations for the cooling fans, the directions of flow for the fans (either by blowing or suction), and the number of fins used for heat dissipation — were carried out to determine the effectiveness of the thermal management designs of the desktop computer, notebook computer, and switch power supply under an environment temperature of 35 °C. Results of this study indicated that the peak component temperatures for the three systems under study are 84 °C, 80 °C, and 81 °C, respectively, while the maximum allowable temperatures suggested by the manufacturers of these three items are 85 °C, 90 °C, and 85 °C, respectively.

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