Design of Aviation Integrated Starter/Generator System Controller
A design scheme for an integrated motor system controller for aviation starting was proposed,which adopted vector control and weak magnetic field expansion control to achieve motor starting control.The generation rectifier module and starting module share a MOSFET three-phase full bridge main power circuit in time sharing,and a dedicated chip was used to achieve synchronous current regulation.A BUCK circuit was used and multiple intersecting faults were used in parallel to reduce output ripple.The control algorithm adopted a 3-point 3-pole(3P3Z)compensation method for 28V output voltage stabilization control,achie-ving fast starting of the aircraft engine,smooth conversion from permanent magnet synchronous motor starting to power generation,and 28V DC power output.Simulation studies have shown that the system has short starting time,good dynamic process performance,stable output of 28V DC power supply,and ideal current sharing of all branches of the parallel BUCK circuit,which has certain engineering application value.
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