Font Size: a A A

Model Predictive Control And Rapid Development Platform Of Permanent Magnet Synchronous Motors For Electric Vehicles

Posted on:2020-01-13Degree:MasterType:Thesis
Country:ChinaCandidate:B ZhuFull Text:PDF
GTID:2392330596491701Subject:Vehicle engineering
Abstract/Summary:PDF Full Text Request
With the release of the national strategy about energy conservation and emission reduction,more and more attention has been paid to the research of electric vehicles(EVs).Permanent magnet synchronous motor(PMSM)has been widely used in powertrain systems of EVs due to its advantages of high efficiency,small volume and high power density.Supported by the national natural science foundation of China(U1564201)and Jiangsu outstanding youth project(BK20180046),in this paper,the model predictive control(MPC)of PMSM,multi-motor torque allocation control based on energy optimization,rapid control prototype development,and the development of semi-physical simulation platform are presented.The main contents are shown as follows:1.The classification and working principle of PMSM are presented and its mathematical model in different coordinate systems is deduced.In order to improve the credibility of system simulation,the signal of Angle position sensor is simulated.Based on the analysis of the directional control strategy,the application of space vector pulse width modulation(SVPWM)technology in the field of PMSM control is emphatically discussed,which lays a foundation for the follow-up research.2.The application of MPC related to the motor is analyzed,and the current control algorithm is developed which is based on magnetic field directional control,and the PMSM control algorithm based on model predictive current control is investigated.Considering the special requirements of EVs for motor torque control,a PMSM control method based on model predictive torque control is proposed,which optimizes the cost function of model predictive torque control.It is proved that the proposed method reduces the torque ripple and improves the motor torque response.3.In order to meet the requirements of efficient operation in a wide speed range regulation for EVs,a multi-motor system driven consisting of a front-axle central motor and a rear-axle hub motor is proposed,and its torque allocation strategy based on optimal energy is presented.The control system considers the intersection characteristics of two kinds of PMSMs with different energy efficiency and mechanical characteristics,and realizes the optimal efficiency operation of the drive system.The vehicle simulation model of the multi-motor drive system is created,and the effectiveness of the proposed method is verified under UDDS typical working conditions.4.Combined with the functions and characteristics of software and hardware of rapid control prototype equipment,a developed platform based on d SPACE for rapid control prototype of PMSM for EVs is built.Besides,corresponding IGBT driving hardware circuit is developed,and modular software program is designed.The developed platform adopts the architecture of real-time simulation board and power circuit,which realizes the graphical management of control flow,shortens the developing time,and ensures the real-time and accuracy of algorithm operation.5.Based on the prototype platform for fast control of PMSM,a semi-physical simulation platform is constructed using high-precision simulation of power components and sensors in the loop system.The software model of the hardware in the loop system is developed and the interface are configured.On this basis,a comparison test with the same working condition is carried out by using a solid motor platform and a semi-physical simulation platform,respectively.The effectiveness of the semi-physical simulation platform is verified...
Keywords/Search Tags:Permanent magnet synchronous motor(PMSM), model predictive control(MPC), rapid control prototype, hardware in the loop(HIL), electric vehicles(EVs)
PDF Full Text Request
Related items