Low-frequency arbitrary-state pulse load power supply power matching method

Abstract

The invention discloses a power matching method for a low-frequency arbitrary-state pulse load power supply, and the method specifically comprises the steps: enabling a bidirectional converter to be connected to the two ends of an input source in parallel in order to suppress the disturbance of forward pulse power Ppr and reverse pulse power Ppc to the input source; in the bidirectional converter, one end of a decoupling capacitor Cs is connected with a source electrode of a switch S1 and a negative electrode of a power input source; the source electrode of the switch S2 is connected with the drain electrode of the switch S1, and is connected with the positive electrode of the power input source after passing through the inductor; the grid electrodes of the switch S1 and the switch S2 are correspondingly controlled to charge and discharge the decoupling capacitor Cs, and the wide voltage change of the decoupling capacitor voltage vCs is utilized to provide partial pulse power Ppr2 and absorb reverse pulse power Ppc; the control process is composed of slow start, fault diagnosis and state monitoring. The energy utilization rate of the input source is greatly improved, and meanwhile the power density of the whole device is improved.

Description

technical field [0001] The invention belongs to the technical field of low-frequency multi-state pulse load power matching, and in particular relates to a low-frequency arbitrary-state pulse load power matching method. Background technique [0002] In the traditional solution for low-frequency multi-state pulse loads, a large-capacity capacitor C is connected in parallel on the bus, resulting in an increase in the size of the power supply. Although the reverse power of the load is absorbed by the negative current absorption module, the principle is to convert the reverse power of the load into heat energy and dissipate it in the air through the resistance. In order to completely absorb the reverse current of the load, the negative current absorption module takes into account to the input source voltage rise and other factors, often negative current sink module current i ob The amplitude will be greater than the reverse load current i p , that is, the input source will also...

AI Technical Summary

Problems solved by technology

[0006] To sum up, it can be clearly found that in the traditional solution, the capacitor C with a large capacitance in parallel on the bus will affect the volume of the power supply, and the reverse power of the load cannot It is effectively utilized, and the reverse power is converted into heat energy and dissipated in the air only through the resistance; secondly, the input source will also output power when the load power is reversed, resulting in an increase in energy consumption of the input source; The reverse power is converted into heat energy and dissipated in the air. It is necessary to connect a high-power resistor in parallel and install a heat sink with a large volume and weight, thereby reducing the power density of the entire device.

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