Control Method of Current Given Waveform of Resonant Excitation Power Supply
A technology of given current and excitation power supply, which is applied to the network using active components, electrical components, impedance networks, etc., which can solve the problems of high-power equipment such as huge cost, increased cost, and increased equipment volume, so as to reduce production costs, The effect of reducing margin requirements, reducing volume and design difficulty
Inactive Publication Date: 2015-08-19
INST OF HIGH ENERGY PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
No matter which solution is adopted, it will cause an increase in the volume of the equipment, and the cost will also increase significantly
The most critical point is that in the initial design of the power supply or magnet, it is not sure how much the value needs to be increased to meet the use requirements. It must be determined through a one-to-one prototype experiment. This will cost a lot of money for high-power equipment and There is a certain risk
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[0043] Specific embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. It should be noted that the embodiments described here are for illustration only, and are not intended to limit the present application.
[0044] The closed-loop control of the resonant excitation power supply adopts digital control technology, that is, the output current is sampled through a high-resolution and high-speed (16bit, 100KHz and above) analog-to-digital converter (ADC). The feedback value obtained by sampling is processed to a certain extent and compared with the digital given value, and the generated error signal passes through the digital proportional-integral-differential (PID) controller to generate an output and act on the power device of the power supply to realize precise control of the output current . The above digital control algorithm can be implemented on a dedicated digital signal processing chip such as a Field Prog...
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The invention discloses a control method for given current waveforms of a resonance excitation source. The control method for the given current waveforms of the resonance excitation source includes obtaining first amplitude attenuation and a first phase difference between a magnetic survey magnetic field and a magnetic survey current in a first given current waveform, wherein the first amplitude attenuation and the first phase difference are provided with preset frequency components; obtaining a first current amplitude and a first current phase which are provided with the preset frequency components in a first output current of the resonance excitation source in the first given current waveform which is an ideal given current waveform; obtaining second amplitude attenuation and a second phase difference between the magnetic survey magnetic field and the magnetic survey current in a second given current waveform, wherein the second amplitude attenuation and the second phase difference are provided with the preset frequency components, and the second given current waveform is formed by combination of a direct current and a first harmonic current provided with the preset frequency components; obtaining a second current amplitude and a second current phase in a second output current of the resonance excitation source in the second given current waveform; and obtaining an amplitude and a phase of a second harmonic current provided with the preset frequency components. By means of the control method for the given current waveforms of the resonance excitation source, cost of a magnet and cost of the resonance excitation source can be lowered.
Description
technical field [0001] The present application relates to the field of resonant excitation power supply, in particular to a control method for a given current waveform of a resonant excitation power supply based on a White resonant circuit. Background technique [0002] In order to realize the sinusoidal control of the excitation magnetic field, the power supply based on the White resonant circuit requires an ideal current given waveform as I=I DC -I AC ×cos(ω 0 t+φ 0 ), where, ω 0 =2πf 0 , f 0 is the repetition frequency of the output current of the excitation power supply, I DC , I AC are the amplitudes of the DC component and the fundamental component of the output current of the power supply, φ 0 is the initial phase of the fundamental component. [0003] Because the iron sheet is saturated, the magnetization curve of the magnet is not an ideal straight line. Even if the excitation current of each magnet is an ideal sinusoid, their magnetic field will not be a s...
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IPC IPC(8): H03H11/36
Inventor 龙锋利程健齐欣刘云涛郭晓玲黄远
Owner INST OF HIGH ENERGY PHYSICS CHINESE ACAD OF SCI