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Rotary-linear switched reluctance motors (RLSRMs) are usually implemented in industry applications, such as boring mill, drill press and carving machines, etc [1].
The growth in the use of implanted medical devices, mobile devices and electric vehicles is exciting interest in wireless power transfer system. Wireless power transfer system (WPT) via magnetic resonant coupling was firstly proposed in 2007, and the system can transfer power to the receiving device over a distance of several times of the radius of the coils [1]. The WPT is not sensitive to the biological...
In the Joule Balance at the National Institute of Metrology (NIM), the dynamic measurement during the coil movement is avoided. But for this method a rather large current in the primary coil is needed to generate the necessary magnetic field in the force weighing phase. Thus the coil heating becomes an obvious uncertainty contribution. To solve this problem, a new coil system, in which the ferromagnetic...
The Joule Balance is one of the several promising methods for the precise measurement of the Planck constant h to redefine the kilogram. Compared with the Watt Balance, it benefits from its all static measurements. For the new generation of the Joule balance, a magnet system with high-permeability material is designed to reduce the problem of coil heating. Simulations are carried out to demonstrate...
The precise measurement of Planck Constant h to establish a kind of quantum mass standard is an important but very difficult work. The Joule Balance method, for the same purpose but different from Watt Balance method, is going on in NIM for three years. The principle and progress are described.
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