Signal analysis device for silicon steel continuous iron loss measurement and signal analysis method thereof
A signal analysis method and signal analysis technology, which is applied in the field of signal analysis devices for continuous iron loss measurement of electrical steel (silicon steel sheets), can solve problems such as inability to respond in real time, achieve sinusoidal waveforms, and ensure real-time response effects
Active Publication Date: 2014-04-16
NAT INST OF METROLOGY CHINA
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Problems solved by technology
[0006] The technical problem to be solved by the present invention is to provide a signal analysis device and method for continuous iron loss measurement of electrical steel, which is used to solve the problems existing in the existing electrical steel loss measurement that cannot respond in real time and ensure that the secondary voltage waveform is sinusoidal.
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[0045] 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.
[0046]This embodiment provides a signal analysis device 1 for continuous iron loss measurement of electrical steel, which is used in conjunction with the signal synchronization control unit 2, measurement wire frame 3 and power amplifier unit 4 commonly used in electrical steel connection iron loss measurement devices , is an important part of the electrical steel connection iron loss measurement device, mainly used to analyze the secondary voltage signal and primary current signal in the continuous iron loss measurement of electrical steel, and the voltage effective value and voltage average generated during the analysis process Parameters such as value, current RMS value, current peak value, H signal and power are ...
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The invention relates to a signal analysis device for silicon steel continuous iron loss measurement and a signal analysis method thereof. The signal analysis device comprises a multi-path analog-to-digital converter for converting the secondary voltage signal and the primary current signal into digital quantity; an FPGA for calculating the digital quantity of the secondary voltage signal and the primary current signal in real time; a micro-controller for reading and processing the secondary voltage signal, the primary current signal and the silicon steel signal calculated by the FPGA in real time; a multi-path digital-to-analog converter for converting the signal coming from the micro-controller into the analog quantity for output; a secondary voltage sine feedback circuit for measuring the phases of the secondary voltage signal and the power frequency sine signal, carrying out phase shafting on the secondary voltage signal to obtain the signal with the same phase with the power frequency sine signal, amplifying the waveform difference between the power frequency sine signal and the phase-shifted secondary voltage signal, superimposing the waveform difference signal on the powder frequency sine signal, and outputting the superimposed signal. The performance of the silicon steel is reflected in real time, and simultaneously the secondary voltage waveform sine is ensured.
Description
technical field [0001] The invention relates to the technical field of silicon steel, in particular to a signal analysis device and method for continuous iron loss measurement of electrical steel (silicon steel sheet). Background technique [0002] At present, two methods are used in the world to measure electrical steel loss—the Epstein square circle method and the SST single-chip measurement method. These two methods are specified in the IEC60404-2 and IEC60404-3 standards respectively. Composed of voltmeter, ammeter and power meter, the signal source is a sine wave generator, and the secondary voltage waveform is kept sinusoidal by using the secondary voltage waveform analog feedback. [0003] Since the above method is a static measurement, the real-time requirements for the voltmeter, ammeter and power meter are not high. During the measurement process, the material is fixed, and the measurement result can be a response of several hundred milliseconds. When it is applied...
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Inventor 张志高林安利范雯侯瑞芬贺建王京平戴璐
Owner NAT INST OF METROLOGY CHINA