A Rotor Position Signal-Free Based Field Current Estimation Method for Brushless Synchronous Starter/Generator

This article proposed a position signal-free field current estimation method for brushless synchronous starter/generator (BSSG). Generally, the of BSSG depends on signals provided by physical sensor or algorithm. However, there are risks in using traditional when is broken estimated information to evaluate current. To overcome this problem, paper proposes method. In method, mathematical relationship between main machine (MM) and vector modulus (CVM) exciter (ME) rotor currents analyzed. The theoretical findings reveal that average equates minimum √3/2 times maximum ME’s CVM both rotating stationary coordinates. Since independent information, can be achieved without signal departing in. Finally, an experiment platform established emulate BSSG, experimental results validate findings.