In order to show the performance of the outer rotor permanent magnet generator timely and accurately under different input parameters, we coupled two software of outer rotor permanent magnet generator experimental platform based on LabVIEW (Laboratory Virtual Instrumentation Engineering Workbench)-Virtual torque and Three-phase electric parameter tester. Firstly, we picked up the DLL (Dynamic Link Library) of virtual torque and generated an excel file through VB (Visual Basic), through LabVIEW we picked up the excel form to acquire the system input parameters (torque and speed); Secondly, we collected the real-time parameters (voltage and current) of three-phase power meter by means of the LabVIEW serial communication; Lastly, we could see the efficiency of the outer rotor permanent magnet generator on the LabVIEW front panel. The experiment show that we can couple the input and output parameters of the system based on LabVIEW, and we can see the efficiency of the outer rotor permanent magnet generator under each fixed input parameters. This experiment avoid the tedious work that people deal with data, optimize the software system of outer rotor permanent magnet generator experimental platform, and provide the technical support for optimal design of permanent magnet generator.
As to the ripple problem of the direct torque control system of permanent magnet synchronous motor, this paper present a new method based on the fuzzy logic control. The new method replaces the traditional hysteresis torque controller by a fuzzy logic controller to realize the low ripple effect of the torque and the flux linkage. Also this paper modeling and simulate the new control system using the FIS toolbox provided by the Matlab/Simulink software, and the simulation results shows that the fuzzy control method is far more better than the traditional direct torque control system.
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