Hybrid detecting device for alternating-current voltage and direct-current voltage of wind power converter

Abstract

The invention discloses a hybrid detecting device for an alternating-current voltage and a direct-current voltage of a wind power converter, and the hybrid detecting device comprises an alternating-current and direct-current high-voltage sampling circuit, a conditioning circuit, an RC (resistor-capacitor) filter circuit and an AD (analog-digital) converting circuit, which are connected in sequence, wherein the alternating-current and direct-current high-voltage sampling circuit is used for detecting the alternating-current voltage and the direct-current voltage of the wind power converter; the conditioning circuit is used for filtering high-frequency interference out from a sampled signal and is separated from a control system; the RC filter circuit is used for filtering out the high-frequency interference of the system and reducing burrs of a waveform; the AD converting circuit is used for converting an analog signal which is output after passing through the RC filter circuit into a digital signal; the AD converting circuit outputs the signal to a CPU (central processing unit) to process the signal; the CPU controls an executor to execute a processing result; and the conditioning circuit is further connected with a signal indicating lamp for indicating that a wind power converter system begins working. The invention aims at providing the hybrid detecting device for the alternating-current voltage and the direct-current voltage of the wind power converter, by using the hybrid detecting device, the detection of the alternating-current voltage and the detection of the direct-current voltage are integrated, and the simultaneous detection of various voltages in different amplitude ranges is achieved.

Description

[technical field] [0001] The invention relates to a wind power converter AC and DC voltage mixed detection device. [Background technique] [0002] The voltage detection of wind power converters includes DC voltage detection and AC voltage detection. Most of the traditional detection devices are standard products with a single function, which cannot realize the simultaneous use of AC and DC. Limited to a single range, the required quantity is large, the space occupied is large, the mechanical structure design and the product appearance are affected, the cost is high, and the controllability is poor; and the inventor has worked hard to design a set of DC voltage detection and AC voltage detection in one, to achieve multiple The present invention can simultaneously detect voltages of different amplitude ranges, has perfect functions, and occupies less space. [Content of the invention] [0003] The invention overcomes the disadvantages of the above-mentioned technologies, and...

AI Technical Summary

Problems solved by technology

[0002] The voltage detection of wind power converters includes DC voltage detection and AC voltage detection. Most of the traditional detection devices are standard products with a single function, which cannot realize the simultaneous use of AC and DC. Limited to a single range, the required quantity is large, the space occupied is large, the mechanical structure design and the product appearance are affected, the cost is high, and the controllability is poor; and the inventor has worked hard to design a set of DC voltage detection and AC voltage detection in one, to achieve multiple The present invention can simultaneously detect voltages of different amplitude ranges, has perfect functions, and takes up less space.

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