A Decentralized Current Sharing Control Strategy for Output Parallel-Connected Dc-dc Converters With True Redundancy

被引：0
|
作者：
Oberto, V. P. [1 ]
Depexe, M. D. [1 ]
Naidon, T. C. [1 ]
Campos, A. [1 ]
机构：
[1] Fed Univ Santa Maria UFSM, Grp Intelligence Lighting GEDRE, BR-97105900 Santa Maria, RS, Brazil
来源：
2014 11TH IEEE/IAS INTERNATIONAL CONFERENCE ON INDUSTRY APPLICATIONS (INDUSCON) | 2014年
关键词：
Distributed control; Dc-dc converters; Parallelism; Current sharing;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This work presents a decentralized current sharing control technique for a modular power supply composed of n output parallel-connected DC-DC converters. Each converter is connected to the load through individual line resistance. A phase shifted PWM signal, whose phase is proportional to each converters measured output resistance, is used to control switch state, generating a small power flow at switching frequency between connected units. In order to provide proper load sharing, a voltage reference adjustment for the main control loop is done through the weighted sum of measured reactive power at switching frequency and load current controller output. A distributed power system with three buck converters feeding a 75 W Light Emitting Diode (LED) street lighting fixture is tested with simulations to prove the feasibility of the idea.
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页数：8
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