Abstract

In electric turbocharger systems, in which the permanent magnet synchronous motor (PMSM) is driven by the power generated by the permanent magnet synchronous generator (PMSG) connected to the internal combustion engine to assist the drive power of the compressor, it is required to reduce the capacitance of the DC-link capacitor between the PWM rectifier and the inverter. However, if a DC-link capacitor with small capacitance is used, the DC-link voltage fluctuates in transient conditions such as when the engine speed fluctuates. Therefore, this study investigates the suppression control of the DC-link voltage in the transient state. In addition, an experimental system with a diesel engine and an electric turbocharger is constructed. Using this experimental system with an 870µF film capacitor, the DC-link voltage fluctuation could be suppressed by maximum of 17.5 and 16.5 points during turbine acceleration and deceleration, respectively. This was achieved by feed-forward control of the generator-side current. The results revealed that the DC-link voltage fluctuation could be suppressed by a maximum of 17.5 points during turbine acceleration and 16.5 points during turbine deceleration.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.