A device and method for measuring continuous iron loss of electrical steel

A technology of measuring device and electrical steel, applied in measuring device, measuring electrical variables, measuring resistance/reactance/impedance, etc., can solve the problems of high cost, low accuracy, complex iron loss measurement scheme, etc., to optimize product performance, The effect of enhancing competition and profitability, and improving self-equipment capabilities

CN103728501BActive Publication Date: 2016-03-02NAT INST OF METROLOGY CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-03-02

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Abstract

The invention relates to a device and method for measuring continuous iron losses of electrical steel. The device comprises a main measurement instrument and a measurement wire frame. The main measurement instrument is used for receiving and processing secondary voltage signals and primary current signals collected by the measurement wire frame and carrying out excitation control and direct-current magnetic field compensation on the measurement wire frame. The measurement wire frame is used for collecting the secondary voltage signals and the primary current signals and transmitting the collected signals to the main measurement instrument and is further used for achieving alternating-current magnetization on a silicon steel sheet through the excitation control of the main measurement instrument. The main measurement instrument comprises a signal analysis unit, a signal synchronization control unit, a power amplification unit, a direct-current magnetic field compensation unit, an upper computer system, an on-line calibration and verification system and other function modules. The device and method have the advantages of being free of losses and achieving continuous measurement, can solve the problem that an Epstein frame and a single-chip magnetic conductance meter cannot achieve real-time monitor, and are universally suitable for silicon steel production.
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Description

technical field

[0001] The invention relates to the technical field of electrical steel, in particular to a continuous iron loss measuring device and method for electrical steel (ie silicon steel sheet). Background technique

[0002] Electrical steel is one of the steel types with the highest added value in steel products. The two most important indicators for evaluating electrical steel are specific total loss (iron loss) and magnetic induction. The lower the iron loss value, the lower the unit energy consumption, and it is more suitable for making large-scale transformers (such as UHV transformers above 500KV); the higher the magnetic induction, the stronger the magnetic permeability, the smaller the volume of the iron core, and the lower the iron loss. Both copper loss and copper loss can be reduced, and at the same time, it can save material consumption and cost. When electrical steel is produced through a series of complex processes such as pickling, cold rolling, anne...

Examples

Embodiment Construction

[0067] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0068] Such as figure 1 As shown, Embodiment 1 provides a continuous iron loss measuring device for electrical steel, including a main measuring instrument 1 and a measuring wire frame 2, and the measuring wire frame 2 is horizontally installed on the production line 3;

[0069] The main measuring instrument 1 is connected to the measuring wire frame 2, and is used to receive and process the secondary voltage signal and the primary current signal collected by the measuring wire frame 2, and perform excitation control and DC magnetic field compensation;

[0070] The measurement wire frame 2 is connected with the main measuring instrument 1, and is used to collect secondary voltage signals and primary current signals...