H.-G Herzog

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Synchronous Reluctance machines are on the line to significant torque ripple development if they are not carefully designed. Since torque ripple causes vibrations and noise in electrical machines it is generally unwanted. In servo-applications with a great speed and position control importance, the torque ripple of the motor also is a main performance(More)
The operation of a squirrel-cage induction machine as a traction motor requires the consideration of an operating range in the design process. The machine has to provide an almost constant mechanical power on the shaft within a speed range which is defined by the Constant Power Speed Ratio CPSR. This is the main difference compared to the conventional(More)
The performance of a reluctance synchronous machine (RSM) strongly depends on the well-designed geometry of the stator and rotor. Within the intention of a high torque and a high power factor both, the difference and the ratio of the direct- and quadrature inductance must be set to a maximum. In this paper an easy (semi-)analytic design method is used to(More)
The output performance of a reluctance synchronous machine strongly depends on a well-designed machine draft. Since there are many different requirements concerning the output capability, the machine design has to be done considering all specifications and demands also determined by the field of application. However the machine design and optimization by(More)
The requirements concerning an electrical machine are defined by the application. Due to widely electrifications in different applications, such as the increasing demand in hybrid vehicles or electric vehicles, the classical requirements for electrical machines have changed. Moreover, further investigations that deal with the substitution of mechanical and(More)
Neuromuscular magnetic stimulation is an auspicious tool in rehabilitation. It causes low distress and allows a more homogeneous activation without the problematic current concentration at electrodes as known from electrical stimulation. However, the performance of available technology is poor. For improvements of the coil technology, important mechanistic(More)
Within this paper a model is presented which is used to simulate the behavior of an axial-flux squirrel-cage induction machine under stator fault conditions. The different fault conditions are taken into account by means of the multiple coupled circuit theory. The faults considered are stator short circuits which occur near and far away from the supply(More)
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