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An Improved Deadbeat Predictive Current Control of pmsm drives Based on the Ultra-local Model

中国电气工程学报(英文) 2023年第2期9卷 27-37页

作者： Yongchang Zhang Wenjia Shen Haitao Yang School of Electrical and Electronic Engineering North China Electric Power UniversityBeijing 102206China School of Electrical and Control Engineering North China University of TechnologyBeijing 100144China

Deadbeat predictive current control(DPCC)has been widely applied in permanent magnet synchronous motor(pmsm)drives due to its fast dynamic response and good steady-state ***,the control accuracy of DPCC is dependent on the machine parameters’*** practical applications,the machine parameters may vary with working conditions due to temperature,saturation,skin effect,and so *** a result,the performance of DPCC may degrade when there are parameter mismatches between the actual value and the one used in the *** solve the problem of parameter dependence for DPCC,this study proposes an improved model-free predictive current control method for pmsm *** accurate model of the pmsm is replaced by a first-order ultra-local *** model is dynamically updated by online estimation of the gain of the input voltage and the other parts describing the system *** obtaining this ultra-local model from the information on the measured stator currents and applied stator voltages in past control periods,the reference voltage value can be calculated based on the principle of DPCC,which is subsequently synthesized by space vector modulation(SVM).This method is compared with conventional DPCC and field-oriented control(FOC),and its superiority is verified by the presented experimental results.

关键词： Deadbeat control current control robustness pmsm drives

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Performance Evaluation of Two-Vector-Based Model Predictive Current Control of pmsm drives

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Chinese Journal of Electrical Engineering 2018年第2期4卷 65-81页

作者： Yongchang Zhang Lanlan Huang Donglin Xu Jiali Liu Jialin Jin Inverter Technologies Engineering Research Center of Beijing North China University of TechnologyBeijing 100144China

Conventional model predictive current control(MPCC)applies only one vector during one control period,which produces large torque and flux ripples and high current harmonics in permanent magnet synchronous motor(pmsm)*** MPCC with duty cycle control has been proposed to improve the steady state performance by applying one non-zero vector and one null vector during one control ***,the prior method requires lots of calculations and predictions to find the optimal voltage vectors and calculate their respective *** from prior enumeration-based MPCC,this paper proposes an efficient two-vector MPCC by applying two arbitrary voltage vectors during one control *** reference voltage vector is firstly calculated based on the principle of deadbeat current *** optimal vectors and their duration are then obtained in a very efficient way,which does not require the calculation of current slopes in prior MPCC *** proposed method is compared to the state-of-the-art predictive control methods,including conventional MPCC,MPCC with duty cycle control,deadbeat control with space vector modulation(SVM)and modulated model predictive control(M2PC).Both simulation and experimental results prove that the proposed method achieves better steady state performance than conventional MPCC with or without duty cycle and the dynamic response is not *** the condition of insufficient dc bus voltage,the proposed method outperforms deadbeat control and M2PC by presenting even higher speed range and less torque ripples.

关键词： Predictive control current control pmsm drives

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Design and Implementation of a Motion Controller for XYZ Table based on Multiprocessor SoPC

Design and Implementation of a Motion Controller for XYZ Tab...

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2009中国控制与决策会议

作者： Ying-Shieh Kung Tai-Wei Tsui Nan-Hui Shieh Department of Electrical Engineering Southern Taiwan UniversityTaiwan

The new Field Programmable Gate Array(FPGA) technologies enables a Nios-Ⅱmulti-processor and an application IP to be integrated into an SoPC(System-on-a-Programmable-Chip) developing ***, this study presents a motion control IC for XYZ table under this SoPC *** axis of XYZ table is driven by a Permanent magnetic Synchronous Motor(pmsm).In implementation,it has two modules in proposed motion control *** module is Nios-Ⅱmulti-processor,which performs the function of trajectory planning and position control of XYZ *** other module performs the function of three pmsms’ current loop control,that each includes SVPWM generation,coordinate transformation,PI controller and the pulse detection of the quadrature *** former is implemented by software with C code in the Nios-Ⅱembedded *** latter is described by VHDL and implemented by hardware in *** last,to confirm the effectiveness of the proposed FPGA-based motion control IC for XYZ table,an experimental system with an XYZ table,an FPGA experimental board,a peripheral board for analog-to-digital transformation,three inverters and three rectifiers has been set up and some experimental results have been demonstrated.

关键词： XYZ Table pmsm drives FPGA Fuzzy control Multiprocessor SoPC

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