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Energy Management for an autonomous electric vehicle: Design, simulation and implementation of a controller for an isolated multisource DC-DC converter


F. Streiff

Semester/Bachelor Thesis, SS 09

The isolated multisource DC-DC converter allows the bidirectional power transfer between dif- ferent power modules. This converter has to be controlled in a way that the desired power is delivered to these di erent modules and that the desired DC-voltages can be maintained. This project deals with the simulation, design and implementation of an applicable control strategy for this DC-DC converter, which should nally be installed on an autonomous vehicle. In order to test di erent control strategies, a model of the system was elaborated. A strategy to make the system stable and a modulation method to avoid DC currents of the transformer of the converter were developed. A centralized and a decentralized controller were synthesized using open loop shaping and com- pared using the model of the system, whereas better results were achieved with the centralized controller. This controller was updated with a disturbance feedforward structure which is able to calculate the disturbances. Again simulations were made which indicated a better control performance when disturbance feedforward was used. The nal controller was implemented on a DSP-board and evaluated using a hardware setup of the converter.


Type of Publication:

(13)Semester/Bachelor Thesis

S. Mariéthoz

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% Autogenerated BibTeX entry
@PhdThesis { Xxx:2009:IFA_3396
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