| 摘要 |
The invention relates to electrical engineering and is meant for the implementation of power supply systems on base of quasi-resonant converters, particularly of capacitive storage chargers.Capacitive storage charger contains N conversion modules connected in parallel. Each conversion module is designed as a quasi-resonant voltage converter with self-limiting of the short-circuit current with the power Pi and the output voltage Ui, where i = 1 ... N. The first conversion module with P1 and U1 is made more powerful. The voltage and power of each following conversion module are subject to the conditions:Ui+1< Ui ,.The voltage U2 ... UN is chosen so that the sum of the average powers of the conversion modules with the power P2 ... PN, in the capacitive storage voltage variation range from 0 to U2 may be equal to P1.The advantages of the invention are to decrease the overloads of the conversion modules at low initial voltages, to simplify the design and reduce the manufacturing cost of the device. |
