Inductor saturation compensation in three-phase three-wire voltage-source converters via inverse system dynamics
Yükleniyor...
Dosyalar
Tarih
2022-05-01
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Institute of Electrical and Electronics Engineers Inc.
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In three-phase three-wire (3P3W) voltage-source converter (VSC) systems, utilization of filter inductors with deep saturation characteristics is often advantageous due to the improved size, cost, and efficiency. However, with the use of conventional synchronous frame current control methods, the inductor saturation results in significant dynamic performance loss and poor steady-state current waveform quality. This article proposes an inverse dynamic model-based compensation (IDMBC) method to overcome these performance issues. For this purpose, two-phase exact modeling of the 3P3W VSC control system is obtained. Based on the modeling, the inverse system dynamic model of the nonlinear system is obtained and employed such that the nonlinear plant is converted to a virtual linear inductor system for linear current regulators to perform satisfactorily. Further, to control phase currents in the synchronous frame, a two-phase coordinate transformation is proposed. The IDMBC method is tested via dynamic command response and waveform quality simulations and experiments that employ saturable inductors reaching down from full inductance at zero current to 1/9th inductance at full current. The results obtained demonstrate the suitability of the method for 3P3W VSCs employing saturable inductors.
Açıklama
Anahtar Kelimeler
Bandwidth, Current regulator, Dynamic models, Dynamic response, Electric inductors, Harmonic distortion, Inductance, Inductor saturation, Inverse dynamic model, Inverse problems, Linear current regulator, Power converters, Quality control, Saturable inductors, Saturation characteristic, Saturation compensation, Steady-state currents, Three-phase, Three-wire, Three-phase three-wire, Waveform quality, Voltage source converters, Voltage-source converter, Current control, Inductors, Load modeling, Nonlinear dynamical systems, Pulse width modulation, Soft magnetic materials, Saturation magnetization
Kaynak
IEEE Transactions on Industrial Electronics
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
69
Sayı
5
Künye
Özkan Z. & Hava, A. M. (2022). Inductor saturation compensation in three-phase three-wire voltage-source converters via inverse system dynamics. IEEE Transactions on Industrial Electronics, 69(5), 4309-4319. doi:10.1109/TIE.2021.3084155
