Three-phase program control AC power source

By combining a digital DSP controller and a large-scale FPGA module, the three-phase AC power source solves the problems of low accuracy and signal delay in the existing technology, and realizes high-precision and stable three-phase AC power output.

CN224289593UActive Publication Date: 2026-05-26SHENZHEN HANGZHI PRECISION ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN HANGZHI PRECISION ELECTRONICS CO LTD
Filing Date
2025-05-15
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing three-phase programmable AC power sources suffer from poor accuracy, low efficiency, and signal delays that affect system precision and performance.

Method used

This new generation of high-precision standard power source combines a digital DSP controller and a large-scale FPGA module with a three-phase AC power output module, a sine wave generation circuit, a touch screen and LCD display module, and a low-pass filter. It achieves high-precision output by utilizing internal and external phase-locked loop control and a high-speed D/A converter.

Benefits of technology

It achieves high frequency stability, high output voltage and current accuracy, good output stability, high frequency resolution, simple control, good waveform quality, no electromagnetic interference, small size, and is easy to design in a fully digital manner.

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Abstract

The utility model discloses a three-phase program-controlled alternating current power source, which relates to the field of three-phase program-controlled alternating current power sources and comprises a digital DSP (digital signal processor) controller + large-scale FPGA (field programmable gate array) module, a three-phase alternating current power output module, a three-phase remembered sine wave generating circuit, a touch screen, a liquid crystal display module, a low-pass filter A, a low-pass filter B and a low-pass filter C, and the touch screen and the liquid crystal display module are connected with the digital DSP controller and the large-scale FPGA module. According to the utility model, the three-phase power source adopts a DSP + FPGA technology, a large-scale FPGA with powerful and flexible functions, an internal and external phase-locked closed-loop control technology, a high-speed and high-precision D / A and a high-fidelity power amplifier to form a new-generation high-precision standard power source, the frequency stability is high, the continuity is good, the precision of output voltage and current can reach 0.01 level, and a single-phase 0-380V, three-phase three-wire, high-precision and high-precision standard power source can be provided. And the three-phase four-wire alternating current voltage is 0-380V.
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