Verfahren zur Lastsymmetrierung mehrerer autark und unabhängig arbeitenden Stromversorgungsmodulen einer modularen Stromversorgungsanlage

The invention relates to a method of load balancing several independent energy supply modules (4, 6, 8) in a modular power supply installation (2), which are networked by means of a node-based bus topology. According to the invention, the method is subdivided into a start, arbitration and control phase. The beginning of the arbitration phase is determined from the start phase, whereupon the power supply modules (4, 6, 8) compete for master status and the determined master power supply module (4, 6, 8) takes control of load balancing during the control phase, wherein a pulse-width modulated load balancing signal is generated, transmitted and subsequently evaluated by the slave power supply modules (4, 6, 8). This enables implementation of a simple, trouble-free and robust method for digital load balancing of several independent power supply modules (4, 6, 8) requiring no sophisticated hardware support.