Development of an adaptive control strategy for the three‐phase grid side converter with wide range of parametric and load uncertainties

Mondal, Prosenjit; Tripathy, Praveen; Adda, Ravindranath; Saha, Ujjwal K.

doi:10.1049/iet-pel.2019.1059

Cited by 6 publications

(1 citation statement)

References 40 publications

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“…Based on the results, a combination of a feedback linearization technique and pole-zero cancellation using passive damping was proposed to solve the closed-loop performance inconsistency problem by assigning a constant cut-off frequency to each loop in a low-pass filter (LPF) form [10,11]. The PMSM true parameter dependence on the feedback gains and feed-forward terms may degrade the closed-loop performance in actual implementation; however, this can be alleviated by incorporating additional novel online parameter estimators as in [12][13][14]. Moreover, the constant inner loop cut-off frequency (for current control) should be increased to expand the feasible outer loop cut-off frequency range for improved speed transient performance; an increased current cut-off frequency may magnify the current ripple (resulting in switching loss) and degrade the relative closed-loop stability.…”

Section: Introductionmentioning

confidence: 99%

Online current cut‐off frequency self‐tuning active damping speed controller for permanent magnet synchronous motors

You

Kim

2021

IET Power Electronics

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This study suggests a dynamic current cut‐off frequency‐based pole‐zero cancellation speed controller for permanent magnet synchronous motors (PMSMs). The proposed self‐tuning algorithm automatically increases the current cut‐off frequency during only the transient periods and restores it as approaching the steady‐state operation. The outer loop control injects the active damping effect, resulting in a closed‐loop order reduction by pole‐zero cancellation from the particularly structured feedback gain. These two benefits contribute to the following advantages: (a) lowering the steady‐state current cut‐off frequency to improve the relative stability margin and (b) securing the capability of assigning the desired cut‐off frequency to both the inner and outer loops in the first‐order low‐pass filter form. A 500‐W PMSM experimental prototype platform confirms the effectiveness of the proposed controller.

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