Open AccessRotor position estimation of wound‐rotor synchronous starter/generator
Author(s) -
Zhu Yujie,
Liu Weiguo,
Meng Tao,
Peng Jichang,
Jiao Ningfei
Publication year - 2018
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.0023
Subject(s) - resolver , rotor (electric) , exciter , stator , control theory (sociology) , wound rotor motor , computer science , position (finance) , generator (circuit theory) , control engineering , voltage , engineering , induction motor , physics , power (physics) , artificial intelligence , electrical engineering , control (management) , finance , quantum mechanics , economics
This study proposes a novel rotor position estimation method for wound‐rotor synchronous starter/generator (WSSG). At starting stage, WSSG needs a resolver to obtain main generator (MG)'s rotor position. However, the use of resolver increases starting system's complexity, volume, weight and cost. In order to solve this problem, a new kind of MG's rotor position estimation method is proposed, which considers the structure of WSSG as a resolver. This method injects a rotating voltage into MG's stator, detects main exciter's stator currents and subsequently processes the current signals to estimate MG's rotor position. Experiment results show that this method has high estimation accuracy, which are in good agreement with the theoretical analyses and simulation results. Compared to the traditional saliency tracking rotor position estimation method, this method does not rely on WSSG's parameters (including MG's saliency), and the signal processing procedures are more simple.