Low cost compound current sharing control for inverters in parallel operation

2004 ◽  
Author(s):  
Zhongyi He ◽  
Yan Xing ◽  
Yuwen Hu
Keyword(s):  
Low Cost ◽  
Parallel Operation ◽  
Current Sharing ◽  
Current Sharing Control

Novel Digital Current Sharing Control Technique on Stand-Alone Photovoltaic Inverter

2013 ◽  
Vol 278-280 ◽  
pp. 1609-1614
Author(s):  
Jian Ru Liang ◽  
Yong Kang ◽  
Hong Tao Shan
Keyword(s):  
Photovoltaic System ◽  
Control Technique ◽  
Parallel Operation ◽  
Output Current ◽  
Good Characteristic ◽  
Current Sharing ◽  
Power Regulation ◽  
Logical Control ◽  
Average Current ◽  
Current Sharing Control

To share the loads and restrain circumfluence among parallel inverters in Stand- alone photovoltaic system (PV), it is described that a digital current sharing control technique for inverter parallel operation in detail in this paper. After the analysis of circumfluence of paralleled system on distributed-logical-control, characteristic of the power regulation, a novel digital power detection technique is deduced. With measuring and analyzing the instantaneous average current of all inverters and the output current of each inverter, both of the current components are used to control and regulate the amplitude and the phase of the output voltage. The proposed control technique on current sharing in the inverter paralleling system has been verified the good characteristic of restraining circumfluence by the results of the experiment.

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.

scholarly journals Primary Droop Current-Sharing Control of the Parallel DC/DC Converters System considering Output Cable Resistance

2011 ◽  
Vol 2011 ◽  
pp. 1-13 ◽  
Author(s):  
J. B. Wang
Keyword(s):  
Low Cost ◽  
Signal Model ◽  
Interconnected System ◽  
Current Sharing ◽  
Small Signal Model ◽  
Gain Profile ◽  
Current Sharing Control ◽  
The Stability ◽  
Voltage Feedback ◽  
And Control

This paper presents a primary droop current-sharing controller that can integrate into voltage feedback controller and, thus, provides a low-cost and simple solution for parallel DC/DC converters system. From the equivalent small-signal model, a two-port network was adapted to describe the output and control variables for designing voltage and droop current-sharing loops. From the analysis results, the designed primary droop current-sharing controller will not affect the original voltage loop gain profile to let the DC/DC converter preserve desire control performance. After designing a stable DC/DC converter with primary droop current-sharing control, the stability of the interconnected parallel DC/DC converters system was studied. When the cable resistance is reduced, when the cable resistance is reduced, the interconnected system might be unstable. Finally, some simulation and experimental results demonstrated the effectiveness of the proposed controller in a prototype parallel DC/DC converters system.

Distributed Event-Triggered $H_\infty$ Consensus Based Current Sharing Control of DC Microgrids Considering Uncertainties

2020 ◽  
Vol 16 (12) ◽  
pp. 7413-7425 ◽  
Author(s):  
Jianguo Zhou ◽  
Yinliang Xu ◽  
Hongbin Sun ◽  
Liming Wang ◽  
Mo-Yuen Chow
Keyword(s):  
Dc Microgrids ◽  
Current Sharing ◽  
Current Sharing Control ◽  
Event Triggered
Sign in / Sign up

Export Citation Format

Share Document