Passivity-Based Linear Feedback Control Design for Permanent Magnet Synchronous Generator under Time-Varying Wind Speed

doi:10.12204/j.issn.1000-7229.2020.05.008

Abstract

Abstract: This paper designs a passivity-based linear feedback control (PBLFC) for permanent magnetic synchronous generator (PMSG) for maximum power point tracking (MPPT). First， a storage function is built on the basis of passivity theory while the beneficial nonlinearities are remained for the purpose of improving the transient responses by analyzing the physical meaning of each term. Then， the linear feedback control is employed as an additional input， upon which the energy in storage function is quickly dissipated by energy reshaping， so that PMSG can effectively realize MPPT under the fast time-varying wind speed. In addition， the closed-loop system stability is thoroughly analyzed to verify its stability. Simulations of four cases are carried out， including step change of wind speed， stochastic wind speed， voltage drop and parameter uncertainties. Simulation results demonstrate that PBLFC can extract the optimal wind power and improve the ability of fault ride-through (FRT) and robustness in various operation conditions compared to that of vector control (VC) and feedback linearization control (FLC).

Key words: permanent magnetic synchronous generator, maximum power point tracking, fault ride-through, storage function, passivity-based linear feedback control

CLC Number:

TM 73

YANG Lei1，LI Shengnan，HUANG Wei，ZHANG Dan，MA Hongsheng，XU Shoudong，YANG Bo. Passivity-Based Linear Feedback Control Design for Permanent Magnet Synchronous Generator under Time-Varying Wind Speed[J]. Electric Power Construction, 2020, 41(5): 66-74.

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