The mathematical modeling of open-switch faults in two-level machine-side converters and the fault-tolerant current control of isotropic permanent-magnet synchronous generators are discussed. The proposed converter model is generic for any open-switch fault and independent of the operation mode of the electrical machine. The proposed fault-tolerant current control system gives improved control ...

A new direct-drive, out-of-vacuum synchrotron injection septum magnet has been built at the Advanced Photon Source to replace the existing eddy-currentshielded, in-vacuum magnet. We describe the design, assembly, construction, and measurements.

Generally, the discontinuous armature permanent magnet linear synchronous motor (PM-LSM) is composed by the stator block (accelerator, re-accelerator, and decelerator) and the free running section. However, the stationary discontinuous armature design involves the velocity variation of the mover during drive when the armature’s non-installation part changes over to installation part as a result...

This paper presents a novel double-stator permanent-magnet machine integrated with a triple rotor magnetic gear structure, which is proposed to address problems of mechanical geared generators for low-speed applications. Torque transmission is based on three rotors consisting of prime permanent-magnet (PM) poles in the middle rotor and field PM poles in the inner and outer rotors. The proposed ...

This paper presents an online stator resistance estimator to achieve precise torque control of CSI fed PMSMs over a low speed operating region. A quick and precise control several researchers have proposed implementations combining the use of permanent magnet synchronous motor with the direct torque control (DTC) technique. The electromagnetic torque, stator flux and rotor position can be estim...