The switching power supply for electrocar based on UC3842 is designed

Posted on Feb 7, 2014

The motor vehicle is the automotive of no emission at present, as the means of transportation of green, will bring the huge change to human society in the 21st century. And the direct-flow brushless electric machine relies on its fine characteristic to already become major technology and developing direction of the electrical machinery field of mo

The switching power supply for electrocar based on UC3842 is designed
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tor vehicle. The of good performance brushless electric machine system is due to the of good performance control module, and the characteristic of the control module depends on the characteristic of the electric power supply to a great extent, so the high-quality power supply power system occupies quite important position in the whole motor vehicle system. The control module of the direct-flow brushless electric machine is a numerically controlled electronic system which adopts the microcontroller. The switching power supply that is controlled on the basis of UC3842 high-performance electric current mode PWM generator is suitable for applying to this kind of system. Originally design realizing the complete segregation exported and input through the small-scale high-frequency voltage transformer, not only has raised the efficiency of the power, has simplified the peripheral circuit, also reduced cost and volume of the power. The voltage stabilization of power supply, the ripple is small, incessant, reliable performance. Single-end anti exciting type typical structure such as Fig. 1 of varying. Single-end means the magnetic core of the voltage transformer only works on the collinear side of magnetic Hysteresis; It means when the gas switching tube is turned on, the stored energy in the primary coil that anti exciting, and the secondary winding is obstructed; When the gas switching tube is shut off, the energy in the primary...

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