Modeling and Control of a Power-Split Hybrid Propulsion System

Abstract

In this paper, the Power-Oriented Graphs (POG) technique is used to model a Hybrid Propulsion System for driving an agricultural tool. The main elements present in the system are: an ICE (Internal Combustion Engine), two PMSMs (Permanent Magnet Synchronous Electric Motors) equipped with two inverters in order to be properly driven, a planetary gear, an energy storage device and an agricultural tool. Based on the system dynamic model, a dedicated control strategy has been developed allowing to efficiently control the system by reducing the ICE specific consumption as much as possible. Simulation results showing the operation of the control strategy are finally reported and commented in detail.

Modeling of Complex Planetary Gear Sets Using Power-Oriented Graphs

“…where the black coefficients have not changed sign with respect to (6). The red coefficients in 7have changed their sign, whereas the blue coefficients in 7are those whose sign has not changed because a double sign change has occurred.…”

“…A vast array of different architectures have been proposed in the literature for the development of different HEVs topologies with different control strategies [1]- [2]. Based on the architecture type, it is possible to distinguish among series [3], parallel [4] and power-split [5]- [6] hybrid types. Among the variety of architectures, power-split HEVs definitely stick out, since they combine the advantages of series and parallel hybrid architectures [5].…”