| With the development of the power electronics technology, computer technology and motor control theory, permanent magnet synchronous motor (PMSM) which has the characteristics of small structure, light weight, good reliability and high efficiency, is widely used in wind power, electric vehicle, electric ship propulsion, aerospace and the other fields. In the early stages of design, offline simulation is used to complete the design and test of PMSM. The disadvantage of offline simulation is that the results could not evaluate the real-time parameters of the controller, and the system simulation time is too long because of switching components. The half-practicality simulation techniques, such as hardware-in-loop (HIL) and rapid control prototyping (RCP), could solve these problems. HIL simulation, which uses real-time mathematical model to simulate the controlled object, and connects the model with the real controller to execute real-time simulation of the entire system, could reduce costs and shorten the development cycle. Also, the HIL experiment is more reproducible, and could be carried on under extreme or fault conditions. With the enhancement of motor technology, simulation software based on the finite element analysis has become a necessary tool of motor design and development. Compared with the traditional d-q model of PMSM, the JMAG finite element analysis model could better simulate the nonlinear magnetic characteristics of the motor with more accurate results.Firstly, this thesis introduces the basic structure of the PMSM, establishes the mathematical models of PMSM under both three-phase and d-q coordinate system, analyzes different PMSM vector control strategies, and elaborates the block diagram of id=0vector control strategy.Secondly, the theoretical basis of the finite element analysis method is described. The finite element model of PMSM is established based on JMAG software. The RTT file is exported after the finite element model solved and the JMAG-RT model of PMSM is established in Simulink.Thirdly, the structure of PMSM drive system HIL half-practicality simulation platform is described, including RT-LAB real-time simulation model and DSP motor controller. The real-time simulation model includes PMSM JMAG-RT model, three-phase time-stamped bridge and incremental encoder real-time model. The design of DSP motor controller including hardware and software two parts is introduced in detail.Finally, the experimental verification of PMSM drive system HIL half-practicality simulation platform is presented. Offline simulation in Simulink verifies the id=0vector control strategy. After the edition and execution of the offline model, HIL simulation of the platform is conducted. The real objects platform is built. The results of HIL platform are compared with those of real objects, which prove the effectiveness and accuracy of the HIL platform. |
