A multi-mode pulsed conversion ion power supply system

Abstract

The utility model relates to power supply system technical field provides a kind of multi-mode pulse conversion ion power supply system.The system includes main control unit, full-bridge inverter unit and multiple AC / DC module, AC / DC module input end connects three-phase power supply, multiple AC / DC module is connected after series connection full-bridge inverter unit, and all are connected with main control unit.AC / DC module contains three-phase rectifier filter circuit and phase-shift full-bridge circuit, and three-phase rectifier filter circuit exports first direct current by soft start, rectification and filtering, and phase-shift full-bridge circuit is inverted into adjustable single-phase alternating current, exports second direct current after isolated transmission, rectification and filtering, and the second direct current of multiple AC / DC module is series connection superposition;Full-bridge inverter unit is inverted into adjustable bipolar pulse power supply output to load after superposition direct current, and its output performance is guaranteed by bridge arm switching tube control and filtering etc. design;Main control unit exports control signal, and system can also be equipped with voltage and current comprehensive detection module.The system improves power power conversion efficiency and reliability.

Claims

1. A multi-mode pulse conversion ion power supply system, characterized in that, It includes a main control unit, a full-bridge inverter unit, and multiple AC / DC modules. The input terminals of the AC / DC modules are connected to a three-phase power supply. The multiple AC / DC modules are connected in series and then connected to the full-bridge inverter unit. Each AC / DC module and the full-bridge inverter unit are respectively connected to the main control unit. Multiple AC / DC modules are independently adjustable and are used to convert three-phase power into multiple adjustable DC power, which are then superimposed and output to the full-bridge inverter unit. The full-bridge inverter unit is used to invert the superimposed DC power into a mode-adjustable pulse power supply and output it to the load. The main control unit is used to output control signals to the AC / DC module and the full-bridge inverter unit respectively.

2. A multi-mode pulsed converted ion power supply system as claimed in claim 1, wherein, The AC / DC module includes a three-phase rectifier filter circuit and a phase-shifting full-bridge circuit arranged in sequence, and the three-phase rectifier filter circuit and the phase-shifting full-bridge circuit are respectively connected to the main control unit; The input terminal of the three-phase rectifier and filter circuit is connected to a three-phase power supply, which is used to rectify and filter the three-phase power supply and output the first DC power. The phase-shifting full-bridge circuit is used to invert the first DC power into a first single-phase AC power, and then rectify the first single-phase AC power into a second DC power after isolating and outputting it. The first single-phase AC power is adjustable.

3. A multi-mode pulsed inverter ion power supply system as defined in claim 2, wherein, The three-phase rectifier and filter circuit includes a soft-start circuit, a first rectifier module, and a first filter module arranged sequentially, wherein: The soft-start circuit is used to smoothly start the load; The first rectifier module is used to rectify the three-phase power supply; The first filtering module is used to filter the DC power rectified by the first rectifier module to output the first DC power.

4. A multi-mode pulsed inverter ion power supply system as defined in claim 3, wherein, The first filtering module includes a first inductor and a first filtering capacitor. The first inductor and the first filtering capacitor are connected in series between the positive output terminal and the negative output terminal of the first rectifier module. The common node of the first inductor and the first filtering capacitor serves as the positive output terminal of the three-phase rectifier filter circuit, and the negative output terminal of the first rectifier module serves as the negative output terminal of the three-phase rectifier filter circuit.

5. A multi-mode pulsed converted ion power supply system as claimed in claim 1, wherein, The phase-shifted full-bridge circuit includes a first inverter module, an isolation transmission module, a second rectifier module, and a second filter module arranged sequentially, wherein: The first inverter module is used to invert the first direct current into an adjustable first single-phase alternating current; The isolation transmission module is used to electrically isolate the first single-phase AC power and transmit it to the second rectifier module; The second rectifier module is used to rectify the first AC power after isolation and transmission into a second DC power. The second filtering module is used to filter the second DC current.

6. A multi-mode pulsed inverter ion power supply system as defined in claim 5, wherein, The DC output terminals of adjacent second rectifier modules are connected in series.

7. A multi-mode pulsed inverter ion power supply system as defined in claim 5, wherein, The isolation transmission module includes a second inductor, a resonant capacitor, and an isolation transformer. The primary windings of the second inductor and the isolation transformer, along with the resonant capacitor, are connected in series between the two AC output terminals of the first inverter module. The two ends of the secondary winding of the isolation transformer are connected one-to-one to the two AC input terminals of the second rectifier module.

8. A multi-mode pulsed converted ion power supply system as claimed in claim 1, wherein, The full-bridge inverter unit includes a first upper bridge arm, a first lower bridge arm, a second upper bridge arm, and a second lower bridge arm. Each of the first upper bridge arm, the first lower bridge arm, the second upper bridge arm, and the second lower bridge arm includes multiple power switching transistors connected in parallel. Each power switching transistor is connected to the main control unit. The common node of the first upper bridge arm and the second upper bridge arm is connected to the positive DC output terminal of the plurality of AC / DC modules, and the common node of the first lower bridge arm and the second lower bridge arm is connected to the negative DC output terminal of the plurality of AC / DC modules. The common node of the first upper bridge arm and the first lower bridge arm serves as the first pulse output terminal, and the common node of the second upper bridge arm and the second lower bridge arm serves as the second pulse output terminal. The first pulse output terminal and the second pulse output terminal are connected to the two ends of the load in a one-to-one correspondence.

9. A multi-mode pulsed inverter ion power supply system as defined in claim 8, wherein, The full-bridge inverter unit further includes a third filter module, which is disposed between the first pulse output terminal and the second pulse output terminal and connected to the load.

10. A multi-mode pulse conversion ion power supply system according to claim 8, characterized in that, The system also includes a voltage and current integrated detection module, which is located between the first pulse output terminal and the second pulse output terminal of the full-bridge inverter unit.

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