In this paper, an improved rotor position estimation strategy based on third harmonic back-EMF for single- and dual-three-phase permanent magnet synchronous machines (PMSMs) under imbalanced situation is proposed. Due to the imbalanced machine impedance, back-EMF or sensing resistor network, the mea...

As an important development direction of power electronic systems, the integration technologies can bring many benefits, such as size reduction, reliability improvement, cost saving and so on. With the continuous development of power semiconductor devices, especially the emergence of wide band-gap d...

Increasing amounts of distributed generation (DG) connected to distribution networks may lead to the violation of voltage and thermal limits. This paper proposes a virtual energy storage system (VESS) to provide voltage control in distribution networks in order to accommodate more DG. A VESS control...

A satellite communication system consisting of small earth terminals which utilize spread spectrum multiple access (SSMA) techniques is introduced in this paper. Having no master station, the system is distributively controlled. The frequency band used is 6/4 GHz.

This paper surveys a number of recent advances in the error analysis in the frequency domain for a digital simulation model. It is emphasized to discuss the errors in characteristic roots and transfer function of the digital simulation model, the frequency domain errors of the data transfers between...