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A high-voltage, high-power, variable-frequency, adjustable constant-voltage source

A high-power, constant-voltage source technology, applied in the direction of adjusting electrical variables, control/regulation systems, instruments, etc., can solve the problems of frequency-variable voltage source amplitude and frequency adjustment range limitations, poor stability, low precision, etc., to achieve distortion Small size, stable output, high precision effect

Active Publication Date: 2014-10-22
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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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%

Method used

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  • A high-voltage, high-power, variable-frequency, adjustable constant-voltage source
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Embodiment Construction

[0027] Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:

[0028] Such as Figures 1 to 3 As shown, the high-voltage, high-power, variable-frequency adjustable constant voltage source of the present invention includes a signal generator and N signal processing circuits, and the power supplies of the internal components of any two signal processing circuits do not share the same ground, and specifically, different switching power supplies are used for power supply. In order to achieve the purpose of not sharing the ground, the different ground can facilitate the final realization of series connection. Each signal processing circuit is composed of a digital isolation conversion circuit and a power amplifier module.

[0029] The signal generated by the signal generator is synchronously output to each signal processing circuit, and after being processed by the digital isolation conversion circuit of each signal ...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/12
Inventor 赵伟孙卫明肖勇孟金岭
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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