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This paper presents asymmetric circuit models and inductance parameter measurement method for Permanent Magnet Linear Synchronous Motor (PMLSM). Asymmetric circuit models considering the saliency and inductance harmonic effects are discussed for PMLSM. All fundamental and harmonic inductance parameters are easily determined by a standstill test using a single-phase commercial source. Experimental...
This paper presents a method to maximize the driving efficiency of synchronous reluctance motors having cross-magnetic saturation effect. A novel method to calculate the optimum d- and q-axis currents that minimize the loss is proposed. In this method, an approximation equation for expressing inductance variation and a simple repetition method are employed to consider the cross-magnetic saturation...
A mechanism of DeltaVth variation of NBTI for SRAM load transistor is examined. The variation data is in good agreement with our proposed model. A large fluctuation of NBTI for small size pMOS is not observed in HCI measurement for nMOS, which may be due to the difference of recovery. Two types of equations to get DeltaVth from DeltaIdL by OTF measurement are compared and we have concluded which equation...
The principle of magnetic levitation for the magnetic top is estimated by a simple analysis based on the equivalent coil current model for a permanent magnet, with the equations of angular moment of a rotating magnetic top. The three dimensional static analysis gives the shape and size of the area where a magnetic top can be kept levitating. The behavior of a levitating magnetic top is analyzed by...
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