Fault Tolerance Capabilities of Three, Four and Six-Phase Configurations of a 24 Slot Modular PMSM

In this study, fault tolerance and redundancy capabilities of different phase and winding configurations of an Integrated Modular Motor Drive (IMMD) system are investigated. This is made possible by manipulating gate drive signals of the inverter and phase connections. Three and four phase connections as well as symmetric and asymmetric six-phase topologies are described. Control strategies and redundancy possibilities of these different topologies under an open circuit fault condition are examined in MATLAB/Simulink environment and validated with Finite Element Analysis (FEA) software ANSYS/Maxwell. Considering a decrease of only 12% in average output torque and 0.7% torque ripple under an open circuit failure recovery operation with rated currents, symmetric six-phase topology is decided to be the most promising configuration by means of fault tolerance


Tümleşik Modüler Motor Sürücü Sistemi Tasarımı
Uğur, Mesut; Keysan, Ozan (null; 2017-10-25)
Bu çalışmada, bir Tümleşik Modüler Motor Sürücü (TMMS) sistemi tasarımı gerçekleştirilmiştir. TMMS sistemi için modüler bir kesirli oluklu, konsantre sargılı (FSCW), sabit mıknatıslı senkron motor (PMSM) ile birlikte Galyum Nitrat (GaN) teknolojisine dayalı modüler motor sürücü güç katı tasarımı yapılmıştır. Konvansiyonel sistemlere göre %2’lik verim artışı sağlanmıştır. Tümleşik motor sürücü sistemine uygun DA bara kondansatör seçimi gerçekleştirilmiştir. Interleaving tekniği kullanılarak kondansatör boyut...
Comparison of Inverter Topologies Suited for Integrated Modular Motor Drive Applications
Ugur, Mesut; Sarac, Hakan; Keysan, Ozan (2018-08-30)
In this paper, various inverter topologies are compared for integrated modular motor drive (IMMD) applications. Two-level voltage source inverter (2L-VSI), three level voltage source inverter (3L-VSI) and series/parallel combinations of these topologies with system level modularity are compared in terms of voltage and current harmonic spectrum, passive component sizes and motor drive efficiency. New generation wide band-gap GaN power semiconductor devices are utilized in modular topologies and they are comp...
Design of a GaN Based Integrated Modular Motor Drive
Uğur, Mesut; Keysan, Ozan (2018-10-25)
In this study, design procedure of an Integrated Modular Motor Drive (IMMD) is presented focusing on high power density. The design is based on a permanent magnet synchronous motor (PMSM) and GaN FETs. Fractional slot concentrated windings are used on the stator. Slot/pole combination and winding configuration is selected based on having low cogging torque and high winding factor. An extended motor drive inverter topology is proposed where 2-level voltage source inverters are connected both in series and pa...
Fault tolerant control of a dual-three-phase electrical machine with predictive current control and reduced computation burden
Saraç, Hakan; Keysan, Ozan; Department of Electrical and Electronics Engineering (2022-2-01)
Fault tolerance concept on electrical drives has gained more importance as electrical machines started to play more role in missin critical applications such as aircraft, EVs and HEVs. Redundant drives are a straightforward but an expensive solution. In conventional three-phase electrical drives, when an open or short circuit fault occurs on a phase of the machine, overall drive system is affected and operation of the machine becomes no longer possible. Therefore electrical machines with multiple phases or ...
Multi-physics design optimisation of a GaN-based integrated modular motor drive system
UĞUR, MESUT; Keysan, Ozan (2019-06-01)
Here, a multi-physics approach is presented for the design optimisation of an integrated modular motor drive (IMMD). The system is composed of a modular permanent magnet synchronous motor (PMSM) and a GaN-based modular motor drive power stage. The multi-physics model includes motor drive inverters and DC-link capacitor bank (electrical model), stator windings and rotor magnets (electromagnetic model), heat sink (thermal model), and a geometrical model. The main purpose of the design optimisation is to obtai...
Citation Formats
G. H. Bayazıt and O. Keysan, “Fault Tolerance Capabilities of Three, Four and Six-Phase Configurations of a 24 Slot Modular PMSM,” 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/51859.