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Signal collection device and signal processing method of current-sharing input system of alternating-current power supply

A technology for AC power supply and signal acquisition, which is applied to measurement devices, frequency measurement devices, and current/voltage measurements. , Improve the effect of current sharing control accuracy

Inactive Publication Date: 2012-08-01
重庆安谐新能源技术有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the traditional AC power supply current sharing input system only samples the AC power supply and the current sharing power supply as a whole, which makes the accuracy of the microprocessor's current sharing control of the AC power supply low.
[0004] In addition, the microprocessor only performs simple filtering on the current and voltage of each AC power supply and the current and voltage of each current-sharing power supply, which leads to extremely inaccurate detection of frequency and phase. A method such as PID control performs current sharing control on the AC power supply, the control accuracy is relatively low, and it is easy to cause the load to burn out

Method used

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  • Signal collection device and signal processing method of current-sharing input system of alternating-current power supply
  • Signal collection device and signal processing method of current-sharing input system of alternating-current power supply
  • Signal collection device and signal processing method of current-sharing input system of alternating-current power supply

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Embodiment Construction

[0065] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0066] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0067] Such as figure 2 As shown, the AC power current equalization output device consists of 3*N first current sampling modules, 3*N first voltage sampling modules, 3*N second current sampling modules, and 3*N second voltage sampling modules and a microprocessor, N is an integer greater than zero, wherein the single-phase power supply in each AC power supply is respectively connected to the microprocessor through a first current sampling mo...

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Abstract

The invention discloses a signal collection device and a processing method of a current-sharing input system of an alternating-current power supply, belonging to the field of current-sharing output of an alternating-current power supply. The signal collection device respectively collects current and voltage of each single-phase power supply of the alternating-current power supply and a current-sharing power supply, so that the collected signals are more accurate, and the current-sharing control accuracy of a microprocessor on the alternating-current power supply is improved. The signal processing method can accurately detect the amplitude value, frequency and phase of each single-phase power supply of the alternating-current power supply and the current-sharing power supply, thereby further improving the current-sharing control accuracy of the microprocessor on the alternating-current power supply and preventing a load from being burnt.

Description

technical field [0001] The invention relates to an AC power supply current equalizing input system, in particular to a signal acquisition device and a processing method of the AC power supply current equalizing input system. Background technique [0002] In the field of power systems, the AC power supply current sharing input system refers to the input of multiple AC currents to a bus. The backfeeding of current to one or more of the AC power sources causes the corresponding AC power supply device to burn out. [0003] Such as figure 1 As shown, the traditional AC power current equalization input system usually consists of a first current sampling module, a second current sampling module, a first voltage sampling module, a second voltage sampling module and a microprocessor, wherein the first current sampling module, the second A voltage sampling module is used to collect the current and voltage of N AC power sources and send them to the microprocessor; the microprocessor ...

Claims

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Application Information

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IPC IPC(8): G01R19/00G01R25/08G01R23/06
Inventor 郑武强谢锋陈柄烨唐林郭锋熊开兰
Owner 重庆安谐新能源技术有限公司
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