Redundant Operation of a Parallel AC to DC Converter via a Serial Communication Bus

다국어 초록 (Multilingual Abstract)

The redundant operation of a parallel AC to DC converter via a serial communication bus is presented. The proposed system consists of three isolated CUK power factor correction modules. The controller for each converter is a dsPIC30F6010 microcontroller while a RS485 communication bus and the clock signal are used for synchronizing the data communication. The control strategy of the redundant operation relies on the communication of information among each of the modules, which communicate via a RS485 serial bus. This information is received from the communication checks of the converter module connected to the system to share the load current. Performance evaluations were conducted through experimentation on a threemodule parallel-connected prototype, with a 578W load and a -48V dc output voltage. The proposed system has achieved the following: the current sharing is quite good, both the transient response and the steady state. The converter modules can perform the current sharing immediately, when a fault is found in another converter module. In addition, the transient response occurs in the system, and the output voltages are at their minimum overshoot and undershoot. Finally, the proposed system has a relatively simple implementation for the redundant operation.

목차 (Table of Contents)

• Abstract
• Ⅰ. INTRODUCTION
• Ⅱ. THE PROPOSED SYSTEM
• Ⅲ. THE CONTROLLER DESIGN OF THE PROPOSED SYSTEM
• Ⅳ. EXPERIMENTAL RESULTS
• Ⅴ. CONCLUSIONS
• ACKNOWLEDGMENT
• REFERENCES

참고문헌 (Reference)

1 "dsPIC30F6010 High-performance digital signal controllers data sheet" Microchip Technology Inc 2004

2 A. R. Ofoli, "Real-time implementation of a fuzzy logic controller for switch-mode power-stage DC-DC converter" 42 (42): 2006

3 W. Stefanutti, "Power line communication in digitally controlled DC–DC converters using switching frequency modulation" 55 (55): 1509-2008, 2008

4 V. Chunkag, "Parallelling three-phase AC to DC converter using CUK rectifier modules based on power balance control technique" 3 (3): 511-524, 2010

5 S.-H. Li, "Paralleled DSP-based soft switching-mode rectifiers with robust voltage regulation control" 19 (19): 937-946, 2004

6 Shahrin Md. Ayob, "PWM DC-AC Converter Regulation using a Multi-Loop Single Input Fuzzy PI Controller" 전력전자학회 9 (9): 124-131, 2009

7 M. Popal, "Monitoring serial communications in microcontroller based embedded systems" Computer Engineering and Systems 56-61, 2006

8 S. K. Mazumder, "Master–slave currentsharing control of a parallel DC–DC converter system over an RF communication interface" 55 (55): 59-66, 2008

9 Gyo-Bum Chung, "Investigation of PID Fuzzy Controller for Output Voltage Regulation of Current-Doubler-Rectified Asymmetric Half-Bridge DC/DC Converter" 전력전자학회 7 (7): 21-27, 2007

10 L. Guo, "Evaluation of DSP-based PID and fuzzy controllers for DC–DC converters" 56 (56): 2237-2248, 2009

11 K. Kutluay, "Dual 8-b microcontrollers" 12 : 59-67, 2006

12 J. Guo, "Distributed, modular, open control architecture for power conversion systems" 2258-2263, 2004

13 Y. Kanthaphayao, "Distributed control of a parallel AC to DC converter" 68-71, 2009

14 Z. He, "Distributed control for UPS modules in parallel operation with RMS voltage regulation" 55 (55): 2860-2869, 2008

15 S. K. Mishra, "Design of a redundant paralleled voltage regulator module system with improved efficiency and dynamic response" 2524-2528, 2006

16 R. V. White, "Data communications issues for power system management" 1188-1199, 2007

17 Jung-Hoon Kim, "DSP-Based Digital Controller for Multi-Phase Synchronous Buck Converters" 전력전자학회 9 (9): 410-417, 2009

18 K. Siri, "Current distribution control for paralle1 connected converters: part I" 28 (28): 829-840, 1992

19 J. M. Guerrero, "Control of distributed uninterruptible power supply systems" 55 (55): 2845-2859, 2008

20 C. S. Chang, "Area load frequency control using fuzzy gain scheduling of PI controllers" 42 (42): 145-152, 1997

21 B.-R. Lin, "Analysis of neural and fuzzy-power electronic control" 144 (144): 1997

22 U. Kamnarn, "Analysis and design of a modular threephase AC-to-DC converter using CUK rectifier module with nearly unity power factor and fast dynamic response" 24 (24): 2009

23 G. Francis, "A universal controller for distributed control of power electronics conversion systems" 8-14, 2006

24 S. Luo, "A review of distributed power systems part I: DC distributed power system" 20 (20): 5-16, 2005

25 S. Luo, "A classification and evaluation of paralleling methods for power supply modules" 901-908, 1999

26 Shahrin Md. Ayob, "A New Optimum Design for a Single Input Fuzzy Controller Applied to DC to AC Converters" 전력전자학회 10 (10): 306-312, 2010