A design methodology of multi-resonant controllers for high performance 400Hz ground power units

Rojas, Felix; Cardenas-Dobson, Roberto; Clare, Jon C.; Diaz, Matias; Pereda, Javier; Kennel, Ralph

Abstract

In aerospace applications, a Ground Power Unit (GPU) has to provide balanced and sinusoidal 400 Hz phase-to-neutral voltages to unbalanced and non-linear single-phase loads. Compensation of high-order harmonics is complex, as the ratio between sampling frequency and compensated harmonics can be very small. Thus multiple superimposed resonant controllers or PI nested controllers in multiple dq frames are not good alternatives. The first approach cannot ensure stability, while the second cannot track sinusoidal zero-sequence components, typically present in unbalanced system, and unachievable high bandwidth at the inner current control loop is typically required. In this paper, a simple methodology for designing a single-loop, multiple resonant controller for simultaneous mitigation of several high-order harmonics, ensuring stability, is presented. Experimental results, based on a 6kW four-leg NPC converter, validates the proposed controller design, showing excellent steady state and transient performance.

Citation

Rojas, F., Cardenas-Dobson, R., Clare, J. C., Diaz, M., Pereda, J., & Kennel, R. (2019). A design methodology of multi-resonant controllers for high performance 400Hz ground power units. IEEE Transactions on Industrial Electronics, 66(8), 654 -6559. https://doi.org/10.1109/tie.2019.2898610

• Journal Article Type: Article
• Acceptance Date: Jan 1, 2019
• Online Publication Date: Feb 15, 2019
• Publication Date: Aug 1, 2019
• Deposit Date: Mar 20, 2019
• Publicly Available Date: Mar 20, 2019
• Journal: IEEE Transactions on Industrial Electronics
• Print ISSN: 0278-0046
• Electronic ISSN: 1557-9948
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 66
• Issue: 8
• Pages: 654 -6559
• DOI: https://doi.org/10.1109/tie.2019.2898610
• Public URL: https://nottingham-repository.worktribe.com/output/1669596
• Publisher URL: https://ieeexplore.ieee.org/document/8643090
• Additional Information: © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.