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 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.

The Key Technology in the Parallel Control of Inverter

2011 ◽  
Vol 328-330 ◽  
pp. 1249-1252
Author(s):  
Juan Ying Qin ◽  
Quan Wang ◽  
Jun Hua Zhou
Keyword(s):  
Ring Current ◽  
Data Communication ◽  
Parallel Flow ◽  
Resistive Load ◽  
Parallel Connection ◽  
Inductive Load ◽  
Key Technology ◽  
Synchronous Control ◽  
Capacitive Load ◽  
Parallel Control

Flow equalization is one of the key technologies in the parallel control of inversion module. This paper presents the multi-inversion module parallel flow equalization system with TMS320LF2407A as the main control chip, which adopts the control strategy of “synchronous control of seizure and coincidence”, gains the data communication in the multi-module parallel connection and the multi-inversion module parallel flow equalization control with CAN controller embedded in TMS320LF2407A. It can be seen from the experimental data and experimental wave that it can effectively restrain the ring current and achieve the equipartition of load in the condition of resistive load and inductive load or capacitive load to achieve the data communication among the parallel inversion modules.

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.

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