High-voltage large-power frequency conversion adjustable constant voltage source

Abstract

The invention relates to a high-voltage large-power frequency conversion adjustable constant voltage source which comprises a signal generator and N signal processing circuits, wherein power sources for inner components of any two signal processing circuits are not grounded; each signal processing circuit is composed of a digital isolation switching circuit and a power amplifier module; a signal generated by the signal generator is synchronously output to all the signal processing circuits; after the signal is firstly processed by the digital isolation switching circuits of all the signal processing circuit, N high-precision isolated low-voltage alternate current signals are output, wherein N is an integer which is not less than 1; all the low-voltage alternating current signals are the same in amplitude, frequency and phase, and the amplitude and frequency of all the low-voltage alternating current signal can be synchronously adjusted; and all the low-voltage alternating current signals are output to the corresponding power amplifier modules treatment be amplified; and output ends of N power amplifier modules are sequentially connected in series so as to be utilized as the total output of the constant voltage source. The constant voltage source provided by the invention has the advantages that the output voltage and power accuracy is high, and the amplitude regulating range is large.

Description

technical field [0001] The invention relates to a high-voltage, high-power, variable-frequency adjustable constant-voltage source, which belongs to the technical field of power electronics transformation. Background technique [0002] In recent years, with the acceleration of the process of world economic integration and the rapid development of some special industries, the application of variable frequency adjustable voltage sources has become more and more extensive. And the cost has higher requirements. However, the performance of power supply products developed based on analog circuit technology cannot be improved, the quality cannot be guaranteed, and the functions can no longer meet the needs of people. This situation has seriously affected the development of related industries and technological progress. Therefore, it is of great practical significance to study high-performance intelligent variable-frequency adjustable voltage sources. [0003] At present, most of t...

AI Technical Summary

Problems solved by technology

However, the amplitude and frequency adjustment range of the variable frequency voltage source obtained by this technology are limited to a certain extent. Most of them can only output voltage signals below 300V and the frequency is between 40-400HZ, and the stability is poor, and the output accuracy Not high, mostly no more than 0.5%

Images