ICMM 2016 - A capacitor-clamped inverter based torsional oscillation suppression method for electromechanical drivetrains.pdf (190.19 kB)
A capacitor-clamped inverter based torsional oscillation damping method for electromechanical drivetrains
conference contribution
posted on 2023-05-23, 11:06 authored by Shagar, V, Dinuka Doupadi Bandara Herath MudiyanselageDinuka Doupadi Bandara Herath Mudiyanselage, Shantha Jayasinghe Arachchillage, Hossein EnshaeiHossein EnshaeiA typical electromechanical drivetrain consists of an electric motor, connecting shafts and gears. Premature failures of these shafts and gears have been reported which are mainly due to fatigue caused by extreme loads and torsional oscillations. Overdesign and passive damping are the common approaches taken to increase the fatigue life. Nevertheless, they increase the system cost, weight and volume. Alternatively, active damping through advanced inverter control of the motor drive has been identified as a promising solution that does not require overdesign or alterations to the existing system. Even with the active damping control, oscillations propagate into the dc side of the power converter and subsequently to the upstream power bus. Generally, a large capacitor or an additional energy storage system is placed to suppress these oscillations. This paper proposes to use the clamping capacitors of the capacitor-clamped inverter as energy storage elements and thereby eliminate the need for a large dc side capacitor or an additional energy storage system. The efficacy of the proposed method has been verified with computer simulations. Simulation results show that the clamping capacitors are capable of containing torsional oscillations within the inverter without passing them to the upstream power bus.
History
Publication title
MATEC Web of ConferencesVolume
45Editors
H Gong, JH Lee, Y BiaoPagination
1-5ISSN
2261-236XDepartment/School
Australian Maritime CollegePublisher
EDP SciencesPlace of publication
FranceEvent title
7th International Conference on Mechatronics and Manufacturing (ICMM 2016)Event Venue
SingaporeDate of Event (Start Date)
2016-01-13Date of Event (End Date)
2016-01-14Rights statement
Copyright 2016 The authors Creative Commons Attribution Licence 4.0Repository Status
- Open