Fast-response magnet power supply based on high-power operational amplifier
An operational amplifier and high-power technology, applied in the direction of output power conversion device, AC power input conversion to DC power output, electrical components, etc., can solve the influence of beam current quality, and the response rate of switching devices is difficult to meet the small signal response bandwidth Requirements, unable to quickly follow up and adjust, etc., to reduce complexity and improve small signal response bandwidth
Pending Publication Date: 2018-08-14
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology
The correction of the beam position depends on the correction magnet, so the power supply of the correction magnet must have a fast frequency response. Generally, the small signal response bandwidth of the power supply is required to reach 1kHz. adversely affect the quality of the beam
The existing power supply design methods applied to accelerator beam position correction magnets mainly use program calculation to directly drive the PWM waveform output of the switching power supply to realize the feedback control of the power supply. Signal Response Bandwidth Requirements
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[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0017] Such as figure 1 As shown, the power conversion module uses a high-power operational amplifier to replace the conventional BUCK converter, and provides a high-precision, low-drift bipolar digital-to-analog converter (DAC) through the digital regulation controller part, and the core control chip configures the DAC Parameters, so that it can generate an appropriate analog output signal as the input signal of the power conversion module, which is provided to th...
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The invention discloses a fast-response magnet power supply based on a high-power operational amplifier. The fast-response magnet power supply comprises a power conversion module and a control module,wherein the power conversion module comprises a power conversion module and a control module. The power conversion module uses the high-power operational amplifier to replace a conventional BUCK converter, and only the control module part is needed to provide a high-precision low-drift bipolar digital-to-analog converter (DAC); through configuration of the DAC, the DAC generates an appropriate analog output signal as an input signal of the power conversion module, and the input signal is provided for the high-power operational amplifier, so that output control of the power conversion module is realized. Through adoption of the high-power operational amplifier, the input and output response delay of the power conversion module is short, and can reach the microsecond level; in addition, thescheme uses a power amplifier power supply mode, high-precision PWM signals generated by a digital signal processing chip are not needed., the small signal response bandwidth of a power supply is effectively improved, and the system structure is simplified.
Description
technical field [0001] The invention relates to the technical field of a fast-response magnet power supply, in particular to a design scheme for a linear magnet power supply in a fast correction system for an accelerator beam current position. Background technique [0002] The determination and adjustment of the beam position is crucial to the operation of the entire accelerator. The correction of the beam position depends on the correction magnet, so the power supply of the correction magnet must have a fast frequency response. Generally, the small signal response bandwidth of the power supply is required to reach 1kHz. adversely affect the quality of the beam. The existing power supply design methods applied to accelerator beam position correction magnets mainly use program calculation to directly drive the PWM waveform output of the switching power supply to realize the feedback control of the power supply. Signal response bandwidth requirements. [0003] During the re...
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Login to View More IPC IPC(8): H02M7/00
CPCH02M7/003H02M1/0012H02M1/0009
Inventor 邵琢瑕高辉张海燕刘鹏王琳
Owner UNIV OF SCI & TECH OF CHINA