Based On Dspace Switch Reluctance Motor Control System Development And Research

As an electromechanical integration speed motor, Switched Reluctance Motor (SRM) has been widely used in many fields, such as transportation, household appliances, general industrial, aviation and industrial servo system. Due to its good speed performance, simple structure, high efficiency and reliability, it attracts more and more attentions. But its strong nonlinear electromagnetic characteristics increase its control difficulty. Nowadays, many advanced intelligent control strategies are being used to enhance the SRM operational effectiveness. As its special structure and operate mode, it is difficult to get a common, simple and accurate SRM model. So traditional off-line simulation can not satisfy the verification of the strategies, and HWIL simulation technology has been used more and more in these situations. Therefore, in this paper, a SRM control system is developed based upon dSPACE.Firstly, SRM's development conditions, theories, characteristics, and research focuses are introduced. Then, it is pointed out that HWIL simulation technologies are very useful in SRD's development process. And dSPACE system's features, constitution and RCP theory are presented as well.Then, the power-driven part is designed and developed to make the system applicable to 4-phase 50W ~3kW SRMs. By comparing several basic common control strategies and power inverter circuits, voltage PWM chopper is selected as the control strategy in this paper. In order to facilitate the strategy, the power inverter circuit is designed to generate PWM in the main circuit. In addition, a switching power supply with 6 independent outputs is designed to satisfy the devices'power supply, such as power-driven devices and isolation devices.In the algorithm part, a single neuron adaptive PID controller is brought in this system. There are three parts being introduced, single neuron adaptive PID principle, overall structure plan and specific models'design. After that, a 1.1kW SRM (8/6 poles) is taken as an example to show the good control performance.Finally, by using FPGA, a functional expansion method for dSPACE is advanced to solve several problems in the dSPACE using process. In this paper, the realization process of I/O expansion, PWM expansion and A/D sampling expansion are expounded, which can provide guidance for some other expansion. And the good exhibition of the functional expansion can be proved through the experiments.Through the work in this paper, a SRM control system based on dSPACE is developed, and the effectiveness of single neuron adaptive PID algorithm is verified directly. By using this system, a rapid development method is concluded in order to improve the efficiency of SRM controller's development. In addition, through the use of FPGA, the dSPACE's function expansion is achieved, which solved some problems in the course of practical application.