Rogowski coil dedicated AC voltage to current converter
A technology of current converters and Rogowski coils, applied in instruments, regulating electrical variables, control/regulating systems, etc., can solve problems such as inability to output current signals, and achieve the effects of small phase error, high precision and good linearity
Inactive Publication Date: 2019-04-19
JIANGYIN SPARK ELECTRONICS TECH
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[0002] Since the design principle of the Rogowski coil is calculated based on the principle of electromagnetic induction, the conventional Rogowski coil can only output a small voltage signal under power frequency conditions, but cannot output a current signal. However, in actual power and electrical systems, current signals are sometimes required. To use the corresponding instrument equipment, it is necessary to convert the AC small signal voltage into a larger AC current signal (generally within 5A), so designing a special AC voltage-to-current converter for Rogowski coils has a good application prospect
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[0017] The specific implementation manners of the present invention will be further described below in conjunction with the drawings and examples. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0018] An AC voltage-to-current converter dedicated to Rogowski coils, which is used to receive and process the collected signals of Rogowski coils, and convert the collected signals into current outputs, including Rogowski coils 1, integrating circuits 2 and mV / A which are electrically connected in sequence In the conversion circuit 3 , the induction signal output end of the Rogowski coil is electrically connected to the signal input end of the integration circuit, and the signal output end of the integration circuit is electrically connected to the signal input end of the mV / A conversion circuit. The integrating circuit 2 is used for integrating and conve...
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The invention discloses a Rogowski coil dedicated AC voltage to current converter and is used for receiving and processing an acquisition signal of a Rogowski coil and converting the acquisition signal into current output. The converter includes the Rogowski coil, an integrating circuit and an mV / A conversion circuit which are electrically connected in sequence, wherein an induction signal outputend of the Rogowski coil is electrically connected with a signal input end of the integrating circuit, and a signal output end of the integrating circuit is electrically connected with a signal inputend of the mV / A conversion circuit. The converter has advantages of high precision, good linearity, small phase error and excellent application prospects.
Description
technical field [0001] The invention relates to the technical field of voltage-current converters, in particular to an AC voltage-to-current converter dedicated to Rogowski coils. Background technique [0002] Since the design principle of the Rogowski coil is calculated based on the principle of electromagnetic induction, the conventional Rogowski coil can only output a small voltage signal under power frequency conditions, but cannot output a current signal. However, in actual power and electrical systems, current signals are sometimes required. To use the corresponding instrumentation equipment, it is necessary to convert the AC small signal voltage into a larger AC current signal (generally within 5A), so designing a special AC voltage-to-current converter for Rogowski coils has a good application prospect. Contents of the invention [0003] The purpose of the present invention is to overcome the defects existing in the prior art, and to provide a dedicated AC voltage-...
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Login to View More IPC IPC(8): G05F1/56
CPCG05F1/56
Inventor 杨友振
Owner JIANGYIN SPARK ELECTRONICS TECH