Chapter 9 : Conclusions, Contributions and Recommendations for Future Work
9.2 Recommendations for Future Work
Recommendations for future research are listed as follows.
❖ Algorithm optimization for less computation load: The computation load during machine control algorithm implementation influences the controller selection. The proposed algorithms in this work are not optimized for
minimum computation effort. A trade-off between algorithm performance and required computational resources could be made to optimize the overall system performance. Future work could be carried out to co-regulate cyber and physical systems, and hence optimize the algorithm implementation with less computation load.
❖ Quantitative reliability analysis in terms of enhanced hardware
protection: The PMSM system source power management and hardware
overcurrent regulation in this work help achieve enhanced hardware protection. The components reliability has not yet been quantitatively analyzed. Future work could be carried out to develop methods to quantify it and further validate the statements in this dissertation about enhanced hardware components reliability.
❖ Sensor fault-tolerant control: This work explores the machine current sensor FDI strategy under various fault scenarios to avoid further impact of the sensor fault on a PMSM system. Remedial action must be taken after a sensor fault is detected. To secure a continuous system operation without unexpected machine system shutdown, a fault-tolerant control (FTC) scheme after machine current sensor fault(s) occurrence is desirable. Future work could be carried out to investigate the FTC when a sensor FDI process is completed. ❖ Non-sensor fault of power inverter: The non-sensor fault of power inverter
is mentioned in the proposed sensor FDI method, but is not fully investigated. For the semiconductor device fault, it might lead to a wrong battery current
estimation if there is circulating current inside the inverter. Additional technique can be used to deal with semiconductor device fault, which could be a part of future work as a supplement to this dissertation.
❖ Hardware experiment: Hardware experiment could be conducted in addition to the existing simulation studies as future work of this dissertation to further verify the proposed strategy.
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