Robust Decoupling Vector Control of Interior Permanent Magnet Synchronous Motor Used in Electric Vehicles with Reduced Parameter Mismatch Impacts

Abstract

Interior permanent magnet synchronous motor (IPMSM) drives have been widely employed in sustainable transport such as electric vehicles (EV). However, the traditional vector control (VC) strategies cannot achieve optimal control due to the intrinsic property of the IPMSMs, which is strong coupling. To solve the issue, this paper proposes an improved decoupling VC strategy to improve the steady-state performance of the IPMSMs with reduced parameter mismatch impacts. First, a deviation decoupling strategy is developed, and meanwhile, the parameters that influence the decoupling method are clearly illustrated. This enriches the theory concerning decoupling control and lays the ground for the development of effective solutions to the parameter mismatch issue. Second, the Luenberger observer theory is discussed, based on which the reason why the Luenberger inductance observers are not widely employed is explained for the first time. Third, with the aid of intermediate variables, which are the disturbances caused by the mismatched inductances, a new inductance identification method based on the Luenberger observer is proposed. Finally, the simulation and experimental results prove that the proposed decoupling methods, as well as the parameter identification method, are effective.

Dynamic Fractional-Order Model of Proton Exchange Membrane Fuel Cell System for Sustainability Improvement

“…Versatile in application, PEMFCs are employed in diverse fields, including mobile devices, distributed power stations, and automobiles, with notable implementations in fuel cell or fuel cell-based hybrid vehicles like Mirai and Citaro, where the fuel cell-fed DC/AC traction drive system is used [9][10][11][12]. Rapid advancements have been made in advanced AC electric motor control algorithms in recent years, leading to a significant maturation of motor control strategies in these vehicles [12][13][14][15][16][17]. These developments in AC electric motor technology have been instrumental in enhancing the performance and efficiency of fuel cell or fuel cell-based hybrid vehicles, contributing to their increasing viability in the market.…”