Buck-boost device and buck-boost method applied to high-power pulse power supply system

Abstract

The invention discloses a buck-boost device applied to a high-power pulse power supply system. The buck-boost device comprises an energy storage inductor module, an energy storage capacitor, a first one-way rectifier module, a second one-way rectifier module, a first switch module and a second switch module, a first end of the first switch module is connected with a voltage input end, and a second end, a third end and a fourth end are connected with the energy storage inductor module and the first one-way rectifier module; the voltage output end is grounded through the energy storage capacitor; the first end of the second one-way rectifier module is connected with the voltage output end, and the second end, the third end and the fourth end are connected with the energy storage inductor module and the second switch module; the first switch module and the second switch module are used for being switched on or switched off according to a signal of a control end; the invention further discloses a corresponding buck-boost method, the cost of the circuit is low, boost or buck of the input voltage can be achieved, and the circuit has good popularization value.

Description

technical field [0001] This patent relates to the technical field of power electronics, in particular to a buck-boost device and a buck-boost method applied to a high-power pulse power supply system. Background technique [0002] In the high-power pulse power system, the input voltage range of the buck-boost device is 960V to 1402V, and the output voltage is required to rise to 1800V in a short time, and then stabilize at about 800V, during which the current remains stable. Therefore, when the input voltage is higher than the output voltage, the input voltage needs to be stepped down; and when the input voltage is lower than the output voltage, the input voltage needs to be boosted. In order to realize the normal power supply of the energy storage device to the system, a buck-boost circuit is usually arranged between the energy storage device and the load, which can boost or step down the input voltage to obtain the output voltage required by the load. [0003] At present, ...

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Problems solved by technology

[0004] The present invention aims to solve the problem that the existing high-power pulse power supply system needs to use various voltage adjustment chips in order to realize the step-down and step-down of the input voltage, the circuit structure is very complicated, and the circuit production cost is relatively high.

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