Maximum Power Tracking with Uniform Time Division among distributed power sources

Abstract

Presented herein is Uniform Time Division (UTD) of Maximum Power Tracking for Distributed-Input Parallel-Output (DIPO) converter power systems. The primary objective of UTD for DIPO converters is to periodically spend equal time in processing maximum power from each of distributed sources using only one MPT non-linear controller. As a result, the UTD-MPT controller sequentially provides equal time intervals of processing maximum power flow from the power sources. Conventionally, the peak values of the distributed source power are concurrently tracked through converters controlled by their own independent MPT controllers without UTD. However, when peak power voltages of distributed power sources are slowly changed as compared to the MPT's response time, such concurrent MPT control for all of the power sources is not necessary. By utilizing UTD of MPT non-linear control, maximum use of available power obtained from each distributed power source is achieved using a single MPT non-linear controller. The resulting system and control architectures offer maximum power transfer with a lower part count. A DIPO power converter bus architecture with a battery-dominated output voltage is described herein. The power and control architectures for DIPO converters are validated through computer simulation for fault-tolerant UTD MPT control.