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This paper introduces the operating principle of pulse-width phase-shift (PW-PS) control technique. Its characteristics and applications in series-resonant high frequency induction heating power supply are researched. The relationship between the devices dissipation and phase-shift angle is analyzed theoretically. All the conclusions are verified and the SOA of power devices is obtained based on MATLAB...
A grey relation analysis mould used to evaluate the thermal power enterprise's coal supplier was proposed. To overcome the problems of weights allocation and determination which exists on the mould of traditional grey relation analysis, a weight grey relation analysis method was modified to solve the problems. The weight was used to estimate the effect of the evaluated index on the evaluated subject...
BP neural network has the shortcomings of slow convergence and is prone to fall into local optimums flows. In this paper, structure and learning algorithm of wavelet neural network are briefly introduced, then a new method of wavelet neural network which can make full use of part characteristic of wavelet time frequent and combine the ability of self study of neural network is presented to form a...
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