A high voltage MPM modular modulation power supply for EIK klystron

Abstract

A high-voltage MPM modular modulation power supply for an EIK klystron can solve the technical problem that the traditional MPM power supply module cannot meet the power supply requirements of the EIK klystron. It includes that after the mains passes through the EMC filter, it is rectified and filtered into a 300V DC power supply for the power supply module, and a high-frequency DC / DC module is used in the power supply module to generate a positive and negative 15V low-voltage power supply. The 300V DC power supply of the power supply module is then supplied to the auxiliary power supply inverter module and the main high-voltage power supply inverter board of the subsequent stage. After high-frequency inversion by the two inverter units, it is respectively sent to the respective subsequent high-frequency transformers and rectifier circuits, and also includes the main high-voltage power supply rectifier and the floating modulation power supply, filament power supply, and bias power supply together to power the final EIK klystron. The present invention outputs the DC power supply after rectification of the industrial frequency AC mains through a high-frequency transformer to the floating power supply module after high-frequency inversion, and uses a small volume to achieve high-power energy transmission and high-voltage isolation.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage power supplies for EIK klystrons, and in particular to a high-voltage MPM modular modulation power supply for EIK klystrons. Background Art

[0002] Distributed action klystron (EIK klystron for short) has the characteristics of high peak power, small size, high microwave frequency, etc., and commercial products in multiple frequency bands have appeared in the millimeter wave and above frequency bands. However, its cathode operating voltage is high and the power supply volume is required to be small.

[0003] Traditional MPM (microwave power module) high-voltage power supplies are generally designed for broadband traveling wave tubes, with cathode operating voltages less than 10kV. The filament, modulation, etc. are potted together with the cathode high voltage, and the volume is comparable to that of the traveling wave tube. However, because the cathode operating voltage required by the EIK klystron is high, generally up to 20kV, the traditional MPM power module cannot meet the power supply requirements of the EIK klystron. Summary of the invention

[0004] The invention provides a high-voltage MPM modular modulation power supply for an EIK klystron, which can solve the technical problem that a traditional MPM power supply module cannot meet the power supply requirement of the EIK klystron.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A high-voltage MPM modular modulation power supply for an EIK klystron, used for the EIK klystron, comprising a housing, an EMC filter and a power supply module being arranged in the housing;

[0007] After the city power passes through the EMC filter, it is rectified and filtered into a 300V DC power supply for the power supply module, and a high-frequency DC / DC module is used in the power supply module to generate a positive and negative 15V low-voltage power supply;

[0008] The housing also includes an auxiliary power supply inverter module and a main high-voltage power supply inverter board. The 300V DC power supply of the power supply module is respectively supplied to the auxiliary power supply inverter module and the main high-voltage power supply inverter board of the subsequent stage. After the power is high-frequency inverted by the auxiliary power supply inverter module, it is transmitted to the high-frequency transformer 1 of the subsequent stage. The high-frequency transformer 1 is connected to the focusing pole of the EIK klystron through the rectifier and the auxiliary power supply module;

[0009] The power is inverted by the main high-voltage power inverter board and then supplied to the high-frequency transformer 2 at the subsequent stage. The high-frequency transformer 2 is connected to the cathode K of the EIK klystron through the high-voltage power rectifier;

[0010] The shell also includes a main high-voltage control board, which takes low-voltage positive and negative 15V power supply from the power supply module, and its output signal controls the main high-voltage power inverter module.

[0011] Furthermore, it also includes an interface protection board, which receives the control signal and sends the logic control signal and the feedback analog quantity acquisition signal to the main high-voltage control board;

[0012] The interface protection board communicates with the outside world through a parallel port or a serial port.

[0013] Furthermore, the auxiliary power supply module includes a modulation power supply, a filament power supply, and a bias power supply, and all three power supplies float on the high voltage potential output by the main high voltage power supply rectifier, and the high voltage is isolated through a high frequency transformer;

[0014] The bias power supply then supplies power to the modulation power supply, which is converted into the focusing electrode power supply pulse required by the EIK klystron.

[0015] The output high voltage end of the main high voltage power rectifier circuit is connected to the cathode K of the EIK klystron, the modulation power output is connected to the focusing pole J of the EIK klystron, and the filament power output is connected to the filament F of the EIK klystron.

[0016] Furthermore, the shell includes a bottom plate, side plates and an upper cover plate, which are tightly fitted together by screws to form a high-strength quadrilateral box frame.

[0017] Furthermore, the bottom plate is provided with a conduction heat dissipation surface, which is precisely fitted with the mounted surface, and is coated with thermally conductive silicone before installation.

[0018] Furthermore, a heat dissipation fan is installed on the side panel of the shell, and an air outlet is provided on the top of the shell.

[0019] Furthermore, a mains power supply connector and a control interface signal connector are provided on the top of the shell.

[0020] Furthermore, a high-voltage output connector is provided on the side plate of the shell, and is connected to each pole of the EIK klystron correspondingly.

[0021] It can be seen from the above technical solution that the high-voltage MPM modular modulation power supply for the EIK klystron of the present invention has the following beneficial effects:

[0022] 1. Using modular design concept, the power supply of each pole required by EIK klystron is connected through wires to form a small-volume MPM module; the integrated high-voltage and high-frequency transformer and rectifier have a maximum output voltage greater than 20kV, and the high-voltage electronic glue potting technology is used to form a stable output of the highest voltage in the smallest volume;

[0023] 2. The present invention adopts high-frequency auxiliary power supply technology, and the DC power supply after rectification of the industrial frequency AC mains is then output to the floating power supply module through a high-frequency transformer after high-frequency inversion. The floating power supply module includes a modulation power supply, a filament power supply and a bias power supply, and realizes high-power energy transmission and high-voltage isolation in a small volume;

[0024] 3. The present invention adopts a digital interface protection circuit and a main high-voltage power supply control circuit to maximize the control function of the MPM module and adapt to multi-signal parallel port communication and serial port communication;

[0025] 4. The bottom plate of the entire power module of the present invention is a heat dissipation surface, which is precisely fitted with the mounted surface to ensure that the heat consumed by the MPM module can be quickly conducted away. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural module block diagram of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0029] like Figure 1 As shown, the high-voltage MPM modular modulation power supply for the EIK klystron described in this embodiment includes an EMC filter, a power supply module, an interface protection board, an auxiliary power supply inverter module, a main high-voltage power supply control board, a main high-voltage power supply inverter board, a main high-voltage power supply rectifier, a bias power supply, a filament power supply, a modulation power supply, etc., which provide power supply for the cathode, collector, filament, and modulation electrode of the EIK klystron.

[0030] like Figure 1As shown, the power supply plug introduces the mains electricity into the MPM module. After passing through the EMC filter, it is rectified and filtered into a 300V DC power supply for the power supply module. The high-frequency DC / DC module is used in the power supply module to generate positive and negative 15V low-voltage power supply. The 300V DC power supply of the power supply module is then supplied to the auxiliary power supply inverter module and the main high-voltage power supply inverter board of the subsequent stage. After high-frequency inversion by the two inverter units, it is respectively sent to their respective subsequent high-frequency transformers and rectifier circuits. The auxiliary power supply module includes a modulation power supply, a filament power supply, and a bias power supply. All three power supplies float on the 20kV high-voltage potential of the cathode of the EIK klystron tube, and the high voltage is isolated by a high-frequency transformer. The main high-voltage power rectifier also includes a high-frequency transformer, a rectifier, a filter circuit, etc., which together with the floating modulation power supply, filament power supply, and bias power supply, provide power for the final EIK klystron tube.

[0031] Specifically, the 300V DC power supply of the power supply module is respectively supplied to the auxiliary power supply inverter module and the main high-voltage power supply inverter board of the subsequent stage. After the power supply is high-frequency inverted by the auxiliary power supply inverter module, it is transmitted to the high-frequency transformer 1 of the subsequent stage. The high-frequency transformer 1 is connected to the focusing electrode of the EIK klystron through the rectifier and the auxiliary power supply module;

[0032] The power is inverted by the main high-voltage power inverter board and then supplied to the high-frequency transformer 2 at the subsequent stage. The high-frequency transformer 2 is connected to the cathode K of the EIK klystron through the high-voltage power rectifier;

[0033] The auxiliary power supply module includes a modulation power supply, a filament power supply, and a bias power supply. All three power supplies float on the high voltage potential output by the main high voltage power supply rectifier, and the high voltage is isolated through a high frequency transformer.

[0034] The bias power supply then supplies power to the modulation power supply, which is converted into the focusing electrode power supply pulse required by the EIK klystron.

[0035] The output high voltage end of the main high voltage power rectifier circuit is connected to the cathode K of the EIK klystron, the modulation power output is connected to the focusing pole J of the EIK klystron, and the filament power output is connected to the filament F of the EIK klystron.

[0036] The main high-voltage control board takes low-voltage positive and negative 15V power supply from the power supply module, receives the logic control signal and feedback analog acquisition signal from the interface protection board, and its output signal controls the main high-voltage power inverter module. The interface protection board communicates with the outside world through the parallel port or serial port, controls the normal operation of the MPM module, and feeds back the real-time data inside the module.

[0037] The high-voltage MPM modular modulation power supply for the EIK klystron of the present invention has an appearance as shown in FIG. Figure 2As shown, the bottom plate is a conductive heat dissipation surface, which needs to be precisely fitted with the installed surface and coated with thermal conductive silicone before installation. The four sides of the module are designed as mutually nested mortise and tenon structures, fixed to the bottom with screws to enhance the structural strength of the module and meet various vibration requirements of military products. The left side panel is equipped with a heat dissipation fan and an air outlet on the top. The top left is designed with a mains power supply connector and a control interface signal connector. The right side panel is a high-voltage output connector, which is connected to each pole of the EIK klystron. The bottom plate of the whole module is designed with six M6 screws, which are fixed to the installed surface and can be easily disassembled from the top with a screwdriver.

[0038] The high-voltage MPM modular modulation power supply for the EIK klystron of the present invention has an installation structure as shown in FIG. Figure 2 As shown, it includes a bottom plate 1, side plates 2 and 15, and columns 6 and 18 that are tightly matched with the bottom plate 1 through screws to form a high-strength quadrilateral box frame. The upper cover plate 3, the sealing plate 4, the panel 5, the upper cover plates 11 and 13 form the top cover plate of the MPM module. The limit block 14 is the mounting plate of the high-voltage output connector, which is fixed to the connector and reliably connected to the module. The others are internal support parts for installing each component module.

[0039] The high-voltage MPM modular modulation power supply for the EIK klystron of the present invention has the advantages of clear functional division, convenient assembly, production and maintenance of the module structure, high maximum voltage, small overall size, low cost, etc.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-voltage MPM modular modulation power supply for an EIK klystron, used for an EIK klystron, characterized by: It includes a shell, in which an EMC filter and a power supply module are arranged; After the city power passes through the EMC filter, it is rectified and filtered into a 300V DC power supply for the power supply module, and a high-frequency DC / DC module is used in the power supply module to generate a positive and negative 15V low-voltage power supply; The housing also includes an auxiliary power supply inverter module and a main high-voltage power supply inverter board. The 300V DC power supply of the power supply module is respectively supplied to the auxiliary power supply inverter module and the main high-voltage power supply inverter board of the subsequent stage. After the power is high-frequency inverted by the auxiliary power supply inverter module, it is transmitted to the high-frequency transformer 1 of the subsequent stage. The high-frequency transformer 1 is connected to the focusing pole of the EIK klystron through the rectifier and the auxiliary power supply module; The power is inverted by the main high-voltage power inverter board and then supplied to the high-frequency transformer 2 at the subsequent stage. The high-frequency transformer 2 is connected to the cathode K of the EIK klystron through the high-voltage power rectifier; The housing also includes a main high-voltage control board, which takes low-voltage positive and negative 15V power from the power supply module, and its output signal controls the main high-voltage power inverter module; The shell also includes an interface protection board, which receives control signals and sends logic control signals and feedback analog quantity acquisition signals to the main high-voltage control board; the interface protection board communicates with the outside world through a parallel port or a serial port; The auxiliary power supply module includes a modulation power supply, a filament power supply, and a bias power supply. All three power supplies float on the high voltage potential output by the main high voltage power supply rectifier, and the high voltage is isolated through a high frequency transformer. The bias power supply then supplies power to the modulation power supply, which is converted into a focusing electrode power supply pulse required by the EIK klystron by the modulation power supply; The main high-voltage power rectifier circuit output high-voltage end is connected to the cathode K of the EIK klystron, the modulation power output is connected to the focusing pole J of the EIK klystron, and the filament power output is connected to the filament F of the EIK klystron.

2. The high-voltage MPM modular modulation power supply for the EIK klystron according to claim 1 is characterized in that: The shell comprises a bottom plate (1), side plates and an upper cover plate, which are tightly fitted together by screws to form a high-strength quadrilateral box frame.

3. The high-voltage MPM modular modulation power supply for the EIK klystron according to claim 2 is characterized in that: The base plate (1) is provided with a conduction heat dissipation surface, which is precisely fitted with the mounting surface and is coated with heat-conducting silicone before mounting.

4. The high-voltage MPM modular modulation power supply for the EIK klystron according to claim 2 is characterized in that: A heat dissipation fan is installed on the side plate of the shell, and an air outlet is arranged on the top of the shell.

5. The high-voltage MPM modular modulation power supply for the EIK klystron according to claim 2 is characterized in that: A mains power supply connector and a control interface signal connector are arranged on the top of the shell.

6. The high-voltage MPM modular modulation power supply for the EIK klystron according to claim 2, characterized in that: A high-voltage output connector is arranged on the side plate of the shell and is connected to each pole of the EIK klystron correspondingly.

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