CONTROL METHOD AND DEVICE THEREFOR

摘要

In one embodiment, a method of forming a circuit to control an electrical machine may include, configuring the circuit to obtain voltage and current information of the voltage over and current in one or more stator coils; configuring the circuit to determine a stator current vector and a stator voltage vector; configuring the circuit to determine an amplitude and phase of a fundamental vector of the stator voltage vector and stator current vector; and configuring the circuit to determine a fundamental vector of a back-EMF.

主权项

1. A system for gathering information about the load angle of a synchronous electrical machine, the system comprising:
a data obtainment circuit for obtaining voltage and current information of the voltage over and current in the stator coils of the synchronous electrical machine; and a processing unit for
determining, based on the obtained voltage and current information from the data obtainment circuit, the stator current vector and the stator voltage vector,obtaining, the fundamental frequency (f) of the obtained voltage and current information,determining the amplitude and phase of the fundamental vector of the obtained stator voltage vector and stator current vector, andderiving, based on the voltage and current fundamental vector, a fundamental vector of the back-EMF.