Fast correction magnet power supply controller system

Abstract

The utility model discloses a fast correction magnet power supply controller system which comprises a main power device, a modulator, a filter, a high-resolution PWM module, a controller and an SFP optical module connected with a fast track feedback system, and the signal output end of the SFP optical module is connected with the signal input end of the controller. The signal output end of the controller is connected with the signal input end of the high-resolution PWM module, the signal output end of the high-resolution PWM module is connected with the control signal input end of the modulator, the signal output end of the modulator is connected with the signal input end of the main power device, the signal output end of the main power device is connected with the input end of the filter, and the signal output end of the filter is connected with the control signal input end of the high-resolution PWM module. The output end of the filter is connected with a load, and the power input end of the main power device is further connected with a main power supply. According to the digital controller, the communication response speed of the controller is greatly improved, and the requirement of a fast track feedback system on the communication response speed of the digital controller for fast correction of the magnet power supply can be well met.

Description

Technical Field

[0001] The utility model relates to the technical field of magnet power supply, in particular to a fast correction magnet power supply controller system. Background Art

[0002] Since the fourth-generation synchrotron radiation source has very high requirements for beam emittance, a high-performance beam orbit feedback system (FOFB) is needed to quickly and timely correct the beam orbit. The fast orbit feedback system (FOFB) can suppress the beam orbit disturbance within a certain bandwidth within a certain range, thereby ensuring the stability of the beam orbit near the extraction light source point. The "Hefei Advanced Light Source Storage Ring Fast Orbit Feedback System Based on PXIe" published by the University of Science and Technology of China Press, written by Li Yunlong, has a detailed introduction to the fast orbit feedback system.

[0003] As the executive structure in the fast orbit feedback system, the fast correction magnet power supply needs to respond quickly to the correction instructions given by the fast orbit feedback system, complete the correction of the beam orbit, and ensure the beam stability requirements in the synchrotron radiation light source storage ring. It has high requirements for the communication response speed of the power supply controller.

[0004] The current design of the fast correction magnet power supply controller adopts the STM32G4X4 series MCU, uses a single-precision floating-point unit (FPU) and implements a full set of DSP (digital signal processing) instructions, and uses the Ethernet chip W5500 and the optical fiber transceiver as the remote control terminal of the power supply. Compared with the ZYNQ series FPGA, the STM32G4X4 series MCU has limited on-chip logic resources. In order to realize the existing functions, the logic resources have been almost exhausted, making it difficult to perform subsequent function upgrades. In addition, the data transmission rate of the solution using the Ethernet chip W5500 and the optical fiber transceiver as the remote control terminal of the power supply is limited to about 20M. Utility Model Content

[0005] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one purpose of the utility model is to propose a fast correction magnet power supply controller system, which greatly improves the communication response speed of the controller and can well meet the requirements of the fast track feedback system for the communication response speed of the digital controller of the fast correction magnet power supply.

[0006] A fast correction magnet power supply controller system proposed in the utility model includes a main power device, a modulator, a filter, a high-resolution PWM module, a controller and an SFP optical module connected to a fast track feedback system, wherein the signal output end of the SFP optical module is connected to the signal input end of the controller, the signal output end of the controller is connected to the signal input end of the high-resolution PWM module, the signal output end of the high-resolution PWM module is connected to the control signal input end of the modulator, the signal output end of the modulator is connected to the signal input end of the main power device, the signal output end of the main power device is connected to the input end of the filter, the output end of the filter is connected to a load, and the power input end of the main power device is also connected to a main power supply.

[0007] Preferably, a current sensor is provided on the line connecting the filter and the load, the signal output end of the current sensor is connected to a digital-to-analog converter, the signal output end of the digital-to-analog converter is connected to a high-precision ADC module, and the signal output end of the high-precision ADC module is connected to the signal input end of the controller.

[0008] Preferably, a storage module is included, and the storage module is connected to the controller.

[0009] Preferably, it comprises a Gigabit network port module, the Gigabit network port module is connected to a host computer, and the Gigabit network port module is connected to the controller.

[0010] Preferably, a power supply module is included to provide working voltage for each module of the controller, and the power supply module includes a U3 buck chip circuit with a 1.0V voltage output, a U5 buck chip circuit with a 3.3V voltage output, a U10 buck chip circuit with a 1.8V voltage output, and a U11 buck chip circuit with a 1.5V voltage output.

[0011] Preferably, the SFP optical module comprises a gold finger connector circuit for connecting a high-speed optical fiber and a connector housing circuit for suppressing electromagnetic interference, the gold finger connector circuit is connected to the controller, and the connector housing circuit is grounded.

[0012] Preferably, the gigabit network port module includes a PHY chip U12 circuit, an RJ45 Ethernet connector U17 circuit and two sets of electrostatic and surge protection chip circuits U16 and U18 chip circuits. The U16 chip circuit, U18 chip circuit and RJ45 Ethernet connector U17 circuit are respectively connected to the PHY chip U12 circuit, and the PHY chip U12 circuit is connected to the controller.

[0013] Preferably, the chip used by the controller is an XC7Z015 chip.

[0014] The beneficial effects of the utility model are: using XC7Z015 as the main control core, the chip has rich logic resources, using its GTP high-speed transceiver resources, communicating with the fast track feedback system through a 6.25GSFP optical module and high-speed optical fiber, greatly improving the communication response speed of the controller; at the same time, the controller also has 2 pieces of 256MB DDR3 SDRAM chips, which can save a large amount of real-time operation data, and realize the import and export of data through the gigabit network port module, which is convenient for rapid fault judgment. The controller currently using the STM32 chip as the control core has limited resources and lacks a way to obtain the internal operation data of the controller when a crash or other failure occurs, which makes it impossible to find the cause of the fault conveniently and quickly. At the same time, the original 100M network port is replaced with a high-speed optical fiber, and the data transmission rate can reach 6.25G, which greatly improves the communication response speed of the controller, and can well meet the fast track feedback system The requirements for the communication response speed of the digital controller of the fast correction magnet power supply can be well met. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In the attached picture:

[0016] Figure 1 This is a control block diagram of a fast correction magnet power supply controller system proposed by the utility model;

[0017] Figure 2 This is a circuit schematic diagram of the power module of the fast correction magnet power controller system proposed by the utility model;

[0018] Figure 3 This is a circuit schematic diagram of the SFP optical module proposed in the utility model;

[0019] Figure 4 This is a circuit schematic diagram of the Gigabit Ethernet port module proposed by the utility model;

[0020] Figure 5 This is a circuit schematic diagram of the storage module proposed by the utility model;

[0021] Figure 6 This is a diagram of the delay measurement results from issuing instructions to the fast correction magnet power supply completing output correction proposed by the utility model. DETAILED DESCRIPTION

[0022] Reference Figure 1, a fast correction magnet power supply controller system, comprising a main power device, a modulator, a filter, a high-resolution PWM module, a controller and an SFP optical module connected to a fast track feedback system, wherein the signal output end of the SFP optical module is connected to the signal input end of the controller, the signal output end of the controller is connected to the signal input end of the high-resolution PWM module, the signal output end of the high-resolution PWM module is connected to the control signal input end of the modulator, the signal output end of the modulator is connected to the signal input end of the main power device, the signal output end of the main power device is connected to the input end of the filter, the output end of the filter is connected to a load, the power input end of the main power device is also connected to a main power supply, and the main power supply is AC power.

[0023] Obviously, based on the above, this embodiment can realize the conversion of the numerical value sent by the fast track feedback system received through the optical fiber and SFP optical module into an electrical signal to the controller, and the controller sends a PWM signal to the modulator through the high-resolution PWM module. The modulator modulates the signal of the main power device, filters it through the filter, and then supplies power to the load.

[0024] In this embodiment, a current sensor is provided on the line connecting the filter and the load, the signal output end of the current sensor is connected to a digital-to-analog converter, the signal output end of the digital-to-analog converter is connected to a high-precision ADC module, and the signal output end of the high-precision ADC module is connected to the signal input end of the controller.

[0025] Obviously, based on the above, this embodiment collects the current passing through the filter through the current sensor, transmits it to the high-precision ADC module inside the controller through the digital-to-analog converter, obtains the current value at this time through the calculation of the controller, and the controller performs feedback adjustment.

[0026] In this embodiment, the fast correction magnet power controller system may include a storage module, which is connected to the controller. The storage module includes two 256MB DDR3 chips. The specific connection circuit is shown in the figure.

[0027] Obviously, based on the above, this embodiment can store data during system operation in real time through the storage module.

[0028] In this embodiment, the fast correction magnet power supply controller system may include a gigabit network port module, the gigabit network port module is connected to a host computer, and the gigabit network port module is connected to a controller.

[0029] Obviously, based on the above, this embodiment communicates with the host computer through the gigabit network port module, and the user can retrieve the information stored in the storage module at any time through the host computer and display it through the host computer.

[0030] In this embodiment, the fast correction magnet power supply controller system includes a power supply module that provides working voltage for each module of the controller, and the power supply module includes a U3 step-down chip circuit with a 1.0V voltage output, a U5 step-down chip circuit with a 3.3V voltage output, a U10 step-down chip circuit with a 1.8V voltage output, and a U11 step-down chip circuit with a 1.5V voltage output. The controller is powered by 1V, 1.5V, 1.8V and 3.3V, the DDR3 part is powered by 1.5V, and the SFP optical module and the Gigabit network port module are powered by 3.3V.

[0031] Obviously, based on the above, this embodiment can realize power supply to each part of the system and ensure the normal operation of each part.

[0032] In this embodiment, if Figure 3 As shown, the SFP optical module may include a gold finger connector circuit for connecting high-speed optical fiber and a connector shell circuit for suppressing electromagnetic interference, wherein chip U19 is the main chip of the gold finger connector circuit, chip U20 is the main chip of the connector shell circuit, the gold finger connector circuit is connected to the controller, and the connector shell circuit is grounded.

[0033] Obviously, based on the above, this embodiment can achieve connection with the optical fiber and transmit the signal transmitted by the optical fiber to the controller.

[0034] In this embodiment, if Figure 4 As shown, the gigabit network port module includes a PHY chip U12 circuit, an RJ45 Ethernet connector U17 circuit and two sets of electrostatic and surge protection chip circuits U16 and U18 chip circuits. The U16 chip circuit, U18 chip circuit and RJ45 Ethernet connector U17 circuit are respectively connected to the PHY chip U12 circuit, and the PHY chip U12 circuit is connected to the controller.

[0035] Obviously, based on the above, this embodiment can achieve communication with the host computer through a network cable.

[0036] In this embodiment, the chip used by the controller is the XC7Z015 chip.

[0037] Obviously, based on the above, XC7Z015, as the main control core, has rich logic resources on the chip.

[0038] In order to more clearly illustrate the scheme and effect of this implementation, examples are given in conjunction with the accompanying drawings:

[0039] The specific working process of this embodiment is as follows:

[0040] S1: The original magnet power supply output is 0A, the load resistance is 1Ω, and the inductance is 1mH. The target current value 1A is given by the remote host computer of the fast track feedback system, and the command is sent to the controller through the SFP optical module;

[0041] S2: The controller receives the command and cooperates with the current sensor and high-precision ADC module to adjust the output PWM wave duty cycle and adjust the output current to 1A;

[0042] S3: The waveform of the command signal when it is sent and the waveform of the current response (converted into a voltage signal through a high-precision DCCT) are measured by an oscilloscope at the same time, and the delay of the output correction is measured.

[0043] S4: While running, the real-time running data is written into DDR3, and the XC7Z015 on-chip processing system on the controller sends the data to the host computer in this system through the Gigabit network port for analysis, so as to facilitate the judgment of the cause of the fault at any time.

[0044] S5: Using an oscilloscope, we can measure the delay from the host computer sending instructions to the fast correction magnet power supply completing the output correction, which is 56.32μs. Figure 6 shown.

Claims

1. A fast correction magnet power supply controller system, characterized in that: The invention comprises a main power device, a modulator, a filter, a high-resolution PWM module, a controller and an SFP optical module connected to a fast track feedback system, wherein the signal output end of the SFP optical module is connected to the signal input end of the controller, the signal output end of the controller is connected to the signal input end of the high-resolution PWM module, the signal output end of the high-resolution PWM module is connected to the control signal input end of the modulator, the signal output end of the modulator is connected to the signal input end of the main power device, the signal output end of the main power device is connected to the input end of the filter, the output end of the filter is connected to a load, and the power input end of the main power device is also connected to a main power supply.

2. A fast correction magnet power supply controller system according to claim 1, characterized in that: A current sensor is provided on the line connecting the filter and the load, a signal output end of the current sensor is connected to a digital-to-analog converter, a signal output end of the digital-to-analog converter is connected to a high-precision ADC module, and a signal output end of the high-precision ADC module is connected to a signal input end of the controller.

3. A fast correction magnet power supply controller system according to claim 1, characterized in that: A storage module is included, and the storage module is connected to the controller.

4. A fast correction magnet power supply controller system according to claim 3, characterized in that: It includes a gigabit network port module, which is connected to a host computer and is connected to the controller.

5. A fast correction magnet power supply controller system according to claim 1, characterized in that: It includes a power supply module that provides working voltage for each module of the controller, and the power supply module includes a U3 buck chip circuit with a 1.0V voltage output, a U5 buck chip circuit with a 3.3V voltage output, a U10 buck chip circuit with a 1.8V voltage output, and a U11 buck chip circuit with a 1.5V voltage output.

6. A fast correction magnet power supply controller system according to claim 1, characterized in that: The SFP optical module comprises a gold finger connector circuit for connecting a high-speed optical fiber and a connector housing circuit for suppressing electromagnetic interference. The gold finger connector circuit is connected to the controller, and the connector housing circuit is grounded.

7. A fast correction magnet power supply controller system according to claim 4, characterized in that: The gigabit network port module includes a PHY chip U12 circuit, an RJ45 Ethernet connector U17 circuit and two sets of static electricity and surge protection U16 chip circuits and U18 chip circuits. The U16 chip circuit, U18 chip circuit and RJ45 Ethernet connector U17 circuit are respectively connected to the PHY chip U12 circuit, and the PHY chip U12 circuit is connected to the controller.

8. A fast correction magnet power controller system according to claim 1, characterized in that: The chip used by the controller is the XC7Z015 chip.

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