Rapid load response phased array equipment power supply system of transfer bus architecture

Abstract

The invention discloses a quick load response phased array equipment power supply system of a transfer bus framework. The quick load response phased array equipment power supply system comprises a power filter, a surge protector, a three-phase active power factor correction circuit, a bus converter array, a quick response non-isolated load point converter and a non-isolated load point converter, the parallel redundant bus converter array completes electrical isolation and voltage conversion from a high-voltage direct current bus to a transfer bus, the non-isolated load point converter completes auxiliary power supply of a T / R unit of phased array equipment and power supply of an array plane control circuit, and the quick response non-isolated load point converter completes drain power supply of the T / R unit. According to the rapid load response phased array equipment power supply system of the transfer bus architecture, power supply for the drain electrode of the array plane T / R unit is completed by cascading the parallel redundant bus converter with the distributed rapid response non-isolated load point converter, so that the task reliability of the power supply system is improved; and the power density and the transient response capability of the load point converter are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply, and in particular to a fast load response phased array equipment power supply system with a transfer bus architecture. Background Art

[0002] The main power consumption of the power supply system of the phased array equipment is concentrated in the drain power supply of the T / R unit on the array surface, accounting for more than 80% of the system power supply. This load is the power amplifier transistor of the transmitting unit of the T / R unit array.

[0003] The operating modes of the transmitting unit of the phased array device are flexible and changeable. For the transmitting unit power amplifier transistor of the T / R unit array, it may be in a continuous wave state or a pulse state when working. The working repetition frequency and working pulse width in the pulse state will change from hundreds of ms to us, and the frequency characteristics of the load are changeable.

[0004] In order to meet the variable frequency characteristics and strong nonlinearity of the load, the currently designed phased array equipment power supply system needs to add a large number of capacitors at the load end to meet the energy storage of different working pulses, so as to reduce the fluctuation of the load point voltage and reduce the pulsating current component of the previous system to improve the stability of the system.

[0005] The power supply system currently designed is a centralized power supply system or a distributed power supply system. The centralized power supply cannot complete the fast response and precise voltage regulation at the load end of the T / R unit array. The traditional distributed power supply system completes the voltage regulation at the load end of the T / R unit array through an isolated conversion voltage stabilization brick module. The transient response is slow and a large number of output capacitors are required to ensure the voltage drop under the pulse working state. Summary of the invention

[0006] The object of the present invention is to provide a fast load response phased array equipment power supply system with a transfer bus architecture, so as to improve the power density and transient response capability of the load point converter.

[0007] In order to achieve the above tasks, the present invention adopts the following technical solutions:

[0008] A fast load response phased array equipment power supply system with a transfer bus architecture, comprising: a power filter and surge protector, a three-phase active power factor correction circuit, a bus converter array, a fast response non-isolated point-of-load converter, and a non-isolated point-of-load converter;

[0009] The parallel redundant bus converter array completes the electrical isolation and voltage conversion from the high-voltage DC bus to the transfer bus. The non-isolated load point converter completes the auxiliary power supply of the T / R unit of the phased array equipment and the power supply of the array control circuit. The fast response non-isolated load point converter completes the drain power supply of the T / R unit.

[0010] The power filter and surge protector complete EMI filtering and surge suppression on the input three-phase AC power and then send it to the three-phase active power factor correction circuit. The three-phase active power factor correction circuit converts the three-phase AC power into a stable high-voltage DC bus voltage and then sends it to the bus converter array at the input end. The bus converter array converts the high-voltage DC bus voltage into a transfer bus voltage and then sends it to a non-isolated load point converter and a plurality of fast-response non-isolated load point converters; wherein the transfer bus voltage output by the bus converter is set to an integer multiple of the output voltage of the fast-response non-isolated load point converter, the fast-response non-isolated load point converter completes voltage reduction and voltage stabilization with a preset working ratio, and each fast-response non-isolated load point converter provides drain power supply to a plurality of T / R units of the phased array device.

[0011] Furthermore, the bus converter is a step-down converter with electrically isolated input and output ends. The bus converter is arranged in M+N blocks, and normal operation of N of the N+M bus converters can ensure normal operation of the system; when the M+N bus converter array is started, it is started in sequence in a time-sharing manner.

[0012] Furthermore, the intermediate bus voltage output by the bus converter is twice the output voltage of the fast response non-isolated load point converter, and the duty ratio of the fast response non-isolated load point converter is 50%.

[0013] Furthermore, after multiple fast-response non-isolated point-of-load converters complete the synchronization of the internal multi-phase interleaved buck circuit switch conversion through the frequency synchronization signal, the high-frequency ripple output by the fast-response non-isolated point-of-load converter array is also synchronized, and the parasitic RF spurious caused by the high-frequency ripple of the T / R unit drain power supply is also synchronized, and the random wide-spectrum noise is synchronized into point-frequency spurious.

[0014] Furthermore, when the power supply of the T / R unit of the phased array device is a multi-point grounding system, the negative end of the transfer bus output by the bus converter is grounded with low resistance.

[0015] Furthermore, the T / R unit power supply of the phased array device is a single-point grounding system, then:

[0016] When the bus converter and the fast response non-isolated load point converter and the non-isolated load point converter are not in the same physical structure, the positive and negative ends of the transfer bus output by the bus converter are grounded through film capacitors; when they are in the same physical structure, the positive and negative ends of the high-voltage DC bus input by the bus converter are grounded through film capacitors, and the negative end of the transfer bus is remotely grounded through the T / R unit.

[0017] Furthermore, an automatic switching switch transistor V1 is connected in series to the positive end of the bus converter output, which is automatically turned on when there is voltage at the bus converter output and automatically turned off when there is no voltage; resistors R2 and R3 are arranged in sequence between the positive and negative ends of the bus converter output, and resistors R5 and R6 are connected in series with the transistor V2 and connected between the positive and negative ends of the bus converter output; one end of the resistor R1 is connected to the gate of the transistor V1, and the other end is connected between the resistors R5 and R6; one end of the resistor R4 is connected between the resistors R2 and R3, and the other end is connected to the gate of the transistor V2, and the source of the transistor V2 is grounded.

[0018] Furthermore, when the output voltage of the bus converter is normal, R2 and R3 connected in series complete the voltage division and provide the gate voltage for transistor V2 through R4 to turn on V2. After V2 is turned on, R6 is connected to the negative terminal of the bus converter output. R5 and R6 connected in series complete the voltage division and provide the gate voltage for transistor V1 through R1 to turn on V1, completing the parallel connection. When the output voltage of the bus converter is abnormal, R2 and R3 connected in series cannot form a voltage division loop and cannot provide the gate voltage for V2 to turn on. V2 is turned off. After V2 is turned off, R5 and R6 connected in series cannot form a voltage division loop and cannot provide the gate turn-on voltage for transistor V1. V1 is turned off, completing the automatic removal of the faulty bus converter 3.

[0019] Furthermore, the fast response non-isolated load point converter is a synchronous buck multi-phase interleaved buck stabilization circuit.

[0020] Furthermore, a multi-phase interleaved buck circuit, an output rectification and filtering circuit, a sampling circuit and a switch control circuit are arranged in the feedback loop of the fast response non-isolated load point converter.

[0021] Furthermore, the power-on startup process of the fast load response phased array equipment power supply system of the transfer bus architecture is as follows:

[0022] (a) The input three-phase AC power is turned on, and the power filter and surge protector are working normally;

[0023] (b) The three-phase active power factor correction circuit is started and outputs direct current to the high-voltage DC bus;

[0024] (c) M+N bus converter arrays are started sequentially and in time;

[0025] (d) The non-isolated point-of-load converter is started to supply power to the array control circuit of the phased array device and provide auxiliary power supply to the T / R unit of the phased array device;

[0026] (e) The array control of the phased array equipment confirms that the T / R unit is enabled and turned off;

[0027] (f) fast response to the startup of the non-isolated point-of-load converter to provide power to the drain of the T / R unit;

[0028] (g) Detecting whether the output current of each fast response non-isolated load point converter is normal. If there is an abnormality, returning to step (f) and turning off the enable of the fast response non-isolated load point converter with abnormal output. If it is normal, executing (h);

[0029] (h) Turn on the T / R unit enable;

[0030] (i) Complete power-on.

[0031] Compared with the prior art, the present invention has the following technical features:

[0032] 1. High mission reliability: The fast load response phased array equipment power supply system of the transfer bus architecture of the present invention uses an M+N parallel redundant bus converter array to complete electrical isolation and voltage conversion from the high-voltage DC bus to the transfer bus, ensuring the high reliability of the first level of the bus converter. The load point completes the partitioned power supply through a fast response non-isolated converter. In the event of failure of T / R units in some areas or fast response non-isolated load point converters, normal operation of other areas can still be guaranteed. Failure of T / R units in a small number of areas does not affect the normal operation of the phased array equipment, and the mission reliability is high.

[0033] 2. Fast transient response: The fast load response phased array equipment power supply system of the transfer bus architecture of the present invention completes electrical isolation and primary voltage conversion by the bus converter array. The load point converter that supplies power to the T / R unit is a non-isolated multi-phase interleaved synchronous buck-stabilizing circuit with optimized voltage gain. It is free of feedback delay and electrical isolation of the power circuit. The load point converter has a high cross-over frequency and fast transient response.

[0034] 3. The point-of-load converter has high power density: The fast load response phased array equipment power supply system of the transfer bus architecture of the present invention uses the bus converter array to complete the electrical isolation and primary voltage conversion. The point-of-load converter eliminates the high-voltage components and isolation power transformer required for high-voltage DC bus input conversion, and the point-of-load converter has high power density.

[0035] It can be seen that the fast load response phased array equipment power supply system of the transit bus architecture of the present invention completes the drain power supply of the array T / R unit by cascading distributed fast response non-isolated load point converters in parallel with redundant bus converters, thereby achieving precise voltage stabilization power supply to the load end of the array T / R unit while improving the mission reliability of the power supply system and the power density and transient response capability of the load point converter. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1It is a block diagram of a fast load response phased array equipment power supply system of a transfer bus architecture of the present invention;

[0037] Figure 2 It is a grounding schematic diagram of a power supply system when the present invention is applied to a multi-point grounding system;

[0038] Figure 3 It is a grounding schematic diagram of a power supply system when the present invention is applied to a single-point grounding system and the bus converter and the fast-response non-isolated load point converter and the non-isolated load point converter are not in the same physical structure;

[0039] Figure 4 It is a grounding schematic diagram of a power supply system when the present invention is applied to a single-point grounding system and the bus converter, the fast-response non-isolated load point converter, and the non-isolated load point converter are in the same physical structure;

[0040] Figure 5 It is a schematic diagram of a bus converter parallel redundant output automatic switching circuit of the present invention;

[0041] Figure 6 It is a schematic diagram of a feedback loop of a fast response non-isolated load point converter of the present invention;

[0042] Figure 7 It is a non-isolated multi-phase interleaved synchronous buck stabilization circuit diagram of a fast response non-isolated load point converter of the present invention;

[0043] Figure 8 is a Bode diagram of a fast response non-isolated point-of-load converter of the present invention;

[0044] Fig. 9 It is a transient response simulation waveform diagram of the fast response non-isolated load point converter of the present invention;

[0045] Fig.10 is a schematic diagram of the feedback loop of an isolated point-of-load converter;

[0046] Fig.11 is the Bode plot of the isolated point-of-load converter;

[0047] Fig.12 It is the transient response simulation waveform of the isolated load point converter;

[0048] Fig.13 It is a power-on startup flow chart of a fast load response phased array equipment power supply system of a transfer bus architecture of the present invention. DETAILED DESCRIPTION

[0049] The present invention provides a fast load response phased array equipment power supply system with a transfer busbar architecture, which completes electrical isolation and voltage conversion from a high-voltage DC busbar to a transfer busbar through a busbar converter, completes auxiliary power supply of a T / R unit and power supply of an array control circuit through a non-isolated load point converter, and completes drain power supply of the T / R unit through a fast response non-isolated proportional converter; the fast load response phased array equipment power supply system with a transfer busbar architecture of the present invention completes drain power supply of array T / R units through a cascade of distributed fast response non-isolated load point converters connected in parallel with partitioned busbar converters, thereby achieving precise voltage stabilization power supply to the load end of the array T / R unit while improving the mission reliability of the power supply system and the power density and transient response capability of the load point converter.

[0050] See attached Figure 1 The present invention provides a fast load response phased array equipment power supply system with a transfer bus architecture, comprising: a power filter and surge protector 1, a three-phase active power factor correction circuit 2, a bus converter array 3, a fast response non-isolated load point converter 4 and a non-isolated load point converter 5.

[0051] The M+N-block parallel redundant bus converter 3 array completes electrical isolation and voltage conversion from the high-voltage DC bus to the transfer bus. The non-isolated load point converter 5 completes the auxiliary power supply of the T / R unit of the phased array equipment and the power supply of the array control circuit. The fast response non-isolated load point converter 4 completes the drain power supply of the T / R unit.

[0052] The power filter and surge protector 1 performs EMI filtering and surge suppression on the input three-phase AC power and then sends it to the three-phase active power factor correction circuit 2. The three-phase active power factor correction circuit 2 converts the three-phase AC power into a stable high-voltage DC bus voltage and then sends it to the bus converter 3 array at the input end. The bus converter 3 array converts the high-voltage DC bus voltage into a transfer bus voltage and then sends it to the non-isolated load point converter 5 and multiple fast-response non-isolated load point converters 4; wherein the transfer bus voltage output by the bus converter 3 is set to twice the output voltage of the fast-response non-isolated load point converter 4, and the fast-response non-isolated load point converter 4 completes voltage reduction and voltage regulation at a working ratio of 50%, and each fast-response non-isolated load point converter 4 provides drain power supply to i T / R units of the phased array device.

[0053] In this solution, the bus converter 3 is a step-down converter with electrical isolation between the input and output ends. The failure rate of a single bus converter 3 is λ i , then the failure rate of the N-block parallel bus converter 3 array without redundancy is:

[0054] λ N =N×λ i

[0055] The mean time between failures (MTBF) value is:

[0056]

[0057] The failure model of the N+M parallel redundant bus converter 3 array is an N / (N+M) structure system, that is, the normal operation of N of the N+M bus converters 3 can ensure the normal operation of the system.

[0058] The MTBF value of this system is:

[0059]

[0060] If N = 20, M = 2, then:

[0061] The MTBF value of a 3-array bus converter with N parallel connections and no redundancy is

[0062] The MTBF value of the bus converter 3 array with N+M blocks in parallel redundancy is Right now

[0063] Calculated, at this time MTBF N+M =2.86×MTBF N .

[0064] That is, by increasing the redundancy of bus converter 3 by 10%, the mean time between failures is increased by 2.86 times, and the failure rate of the system is reduced to 35% of the original.

[0065] Therefore, the present invention can greatly improve the task reliability of the bus converter 3 array through the parallel redundancy of N+M bus converters 3; the T / R units of the load points complete the partition power supply through the distributed fast response non-isolated converter 4 array, and in the event of failure of T / R units or fast response non-isolated load point converters in some areas, the normal operation of other areas can still be guaranteed, and the failure of T / R units in a small part of the area will not affect the normal operation of the phased array equipment, and the system task reliability is high. The M+N bus converter 3 array is started in sequence and in time.

[0066] In this solution, the transfer bus voltage output by the bus converter 3 is designed to be twice the output voltage of the fast-response non-isolated load point converter 4, and the working ratio of the fast-response non-isolated load point converter 4 is 50%. Then, the steady-state working point of each phase synchronous buck converter is at the dynamic optimum of the BUCK converter, thereby improving the response speed of each phase synchronous buck converter; the working ratio of each phase synchronous buck converter is 50%, the BUCK inductor current waveform is symmetrical, and the multi-phase interleaving cancellation effect is optimal; the working ratio of each phase synchronous buck converter is 50%, and the response speed can be significantly improved through nonlinear control strategies such as continuous conduction in the ultra-fast response requirements.

[0067] In this solution, multiple fast-response non-isolated load point converters 4 complete the synchronization of the switch conversion of the internal multi-phase interleaved buck circuit through a frequency synchronization signal; the high-frequency ripple output by the array of fast-response non-isolated load point converters 4 powered by the T / R unit is synchronized with the switch conversion of the internal multi-phase interleaved buck circuit. After the synchronization is completed through an external frequency synchronization signal, the high-frequency ripple output by the array of fast-response non-isolated load point converters 4 is also synchronized, and the parasitic RF spurious caused by the high-frequency ripple of the T / R unit drain power supply is also synchronized, and the random wide-spectrum noise is synchronized into point-frequency spurious, thereby improving the spurious emission index of the phased array device.

[0068] Below Figure 2 , Figure 3 In the analyzed phased array equipment power supply system, the load point converter, i.e., the fast response non-isolated load point converter 4, is not integrated with the T / R unit in the same module. Effective grounding within the same module means that there is no common-mode noise from the input end of the fast response non-isolated load point converter 4 to the ground from the transfer bus, and there are no different grounding treatment measures in different systems.

[0069] like Figure 2 As shown, the grounding schematic diagram of the power supply system when the present invention is applied to a multi-point grounding system, when the T / R unit power supply of the phased array device is a multi-point grounding system, the negative end of the transfer bus output by the bus converter 3 is grounded with low resistance.

[0070] In a multi-point grounding system, the drain power supply has a separate low-resistance power supply circuit, and the negative end of the transfer bus is grounded with low resistance. The common-mode noise of the transfer bus to the ground is suppressed through grounding, thereby improving the electromagnetic compatibility of the system.

[0071] like Figure 3 As described above, the present invention is applied to a single-point grounding system and the bus converter 3 and the fast response non-isolated load point converter 4 and the non-isolated load point converter 5 are not in the same physical structure.

[0072] The T / R unit power supply of the phased array device is a single-point grounding system. When the bus converter 3 and the fast response non-isolated load point converter 4 and the non-isolated load point converter 5 are not in the same physical structure, the positive and negative ends of the transfer bus output by the bus converter 3 are grounded through thin film capacitors.

[0073] In a single-point grounding system, in order to ensure the independence of the drain power supply circuit, the negative end of the transfer bus is prohibited from being grounded. The positive and negative ends of the transfer bus are connected to the ground with common-mode capacitors to suppress common-mode noise and improve the electromagnetic compatibility of the system.

[0074] like Figure 4As shown, it is a schematic diagram of grounding of a power supply system when the present invention is applied to a single-point grounding system and the bus converter 3 and the fast-response non-isolated load point converter 4 and the non-isolated load point converter 5 are in the same physical structure.

[0075] The phased array device T / R unit power supply is a single-point grounding system. When the bus converter 3 and the fast response non-isolated load point converter 4 and the non-isolated load point converter 5 are in the same physical structure, the positive and negative ends of the high-voltage DC bus input by the bus converter 3 are grounded through film capacitors, and the negative end of the transfer bus is remotely grounded through the T / R unit.

[0076] The bus converter 3, the fast response non-isolated load point converter 4 and the non-isolated load point converter 5 are in the same physical structure. The negative end of the transfer bus is remotely grounded through the T / R unit. The common-mode noise is mainly concentrated on the high-voltage DC bus to the ground. Common-mode capacitors are connected to the ground at the positive and negative ends of the high-voltage DC bus to suppress the common-mode noise and improve the electromagnetic compatibility of the system.

[0077] like Figure 5 As shown, the schematic diagram of the bus converter 3 parallel redundant output automatic switching circuit of the present invention.

[0078] The positive output terminal of the bus converter 3 is connected in series with Figure 5 The automatic switching switch transistor V1 shown is automatically turned on when there is voltage at the output of the bus converter 3, and is automatically turned off when there is no voltage; resistors R2 and R3 are arranged in sequence between the positive and negative output terminals of the bus converter 3, and resistors R5 and R6 are connected in series with the transistor V2 and connected between the positive and negative output terminals of the bus converter 3; one end of the resistor R1 is connected to the gate of the transistor V1, and the other end is connected between the resistors R5 and R6; one end of the resistor R4 is connected between the resistors R2 and R3, and the other end is connected to the gate of the transistor V2, and the source of the transistor V2 is grounded.

[0079] When the output voltage of bus converter 3 is normal, R2 and R3 connected in series complete voltage division and provide gate voltage to transistor V2 through R4 to turn on V2. After V2 is turned on, R6 is connected to the negative output terminal of bus converter 3. R5 and R6 connected in series complete voltage division and provide gate voltage to transistor V1 through R1 to turn on V1, thus completing parallel connection.

[0080] When the output voltage of the bus converter 3 is abnormal, R2 and R3 connected in series cannot form a voltage divider circuit, and cannot provide the gate voltage for V2 to turn on. V2 is turned off. After V2 is turned off, R5 and R6 connected in series cannot form a voltage divider circuit, and cannot provide the gate turn-on voltage for transistor V1. V1 is turned off, completing the automatic removal of the faulty bus converter 3.

[0081] like Figure 6, a schematic diagram of a feedback loop of a fast response non-isolated load point converter 4 of the present invention is shown.

[0082] A multi-phase interleaved buck circuit 601 , an output rectifier and filter circuit 602 , a sampling circuit 604 and a switch control circuit 603 are arranged in the feedback loop of the fast response non-isolated load point converter 4 .

[0083] like Figure 7 As shown, the non-isolated multi-phase interleaved synchronous buck stabilization circuit diagram of the fast response non-isolated load point converter 4 of the present invention. The fast response non-isolated load point converter 4 is a synchronous buck multi-phase interleaved buck stabilization circuit.

[0084] Figure 7 (a) is a multi-phase interleaved synchronous buck regulator circuit of a fast-response non-isolated load point converter 4; it can be selected when the transient response requirement is extremely high and the system space size allows Figure 7 (a) is a cross-inductor multi-phase interleaved synchronous buck regulator circuit shown in FIG. By adding a compensation inductor, the current of a certain phase is increased and coupled to the N phases through the secondary winding in series, thereby doubling the current response speed and further improving the response speed of the multi-phase interleaved synchronous buck regulator circuit.

[0085] like Figure 8 As shown, the Bode diagram of the fast response non-isolated load point converter 4 of the present invention.

[0086] When the input is 48V, the output is 24V, the fast response non-isolated load point converter 4 has a switching frequency of 300kHz, and the non-isolated two-phase interleaved synchronous buck converter has a crossover frequency of 60kHz.

[0087] like Fig. 9 As shown in FIG. 1 , the transient response simulation waveform diagram of the fast response non-isolated load point converter 4 of the present invention is shown. Figure 8 Parameters, transient response time is about 15uS.

[0088] like Fig.10 As shown, the feedback loop diagram of the isolated load point converter is shown.

[0089] When the load point converter is an isolated converter, the feedback loop includes an isolated drive circuit 1001, a switching power conversion circuit 1002, a power transmission transformer 1003, an output rectifier filter circuit 1004, an isolated sampling circuit 1006 and a switch control circuit 1005.

[0090] like Fig.11 Figure 2 shows the Bode plot of an isolated point-of-load converter.

[0091] The output voltage is also 24V and the crossover frequency of the isolated load point converter is 10kHz.

[0092] like Fig.12 As shown, the transient response simulation waveform of the isolated load point converter.

[0093] same Fig.11 Parameters, transient response time is about 400uS.

[0094] like Figure 9-12 The technical solution of the present invention is as follows: First, due to the limitation of the inherent pole frequency of the isolation sampling circuit 1006, it is difficult for the system to obtain a higher crossover frequency; in addition, the isolation sampling circuit 1006, the isolation driving circuit 1001 and the power transmission transformer 1003 will increase the system delay of the converter. When the system delay is large, it is easy to oscillate at a high crossover frequency, which limits the compensation bandwidth and makes it difficult for the system to obtain a higher crossover frequency. Therefore, the technical solution of the present invention greatly improves the transient response capability of the load point converter.

[0095] like Fig.13 As shown, it is a power-on startup flow chart of the fast load response phased array equipment power supply system of the transfer bus architecture of the present invention.

[0096] The process is as follows:

[0097] (a) The input three-phase AC power is turned on, and the power filter and surge protector 1 work normally;

[0098] (b) The three-phase active power factor correction circuit 2 is started and outputs direct current to the high-voltage direct current bus;

[0099] (c) The 3 arrays of M+N block bus converters are started sequentially and in time to ensure that the parallel redundant circuits are not in danger;

[0100] (d) The non-isolated point-of-load converter 5 is started to supply power to the array control circuit of the phased array device and provide auxiliary power supply to the T / R unit of the phased array device;

[0101] (e) The array control of the phased array equipment confirms that the T / R unit is enabled and turned off;

[0102] (f) quickly responding to the startup of the non-isolated load point converter 4 to provide power to the drain of the T / R unit;

[0103] (g) Detecting whether the output current of each fast response non-isolated load point converter 4 is normal. If there is an abnormality, return to step (f) and turn off the enable of the fast response non-isolated load point converter 4 with abnormal output. If it is normal, execute (h);

[0104] (h) Turn on the T / R unit enable;

[0105] (i) Complete power-on.

[0106] The fast load response phased array equipment power supply system of the transfer bus architecture of the present invention completes electrical isolation and voltage conversion from the high-voltage DC bus to the transfer bus through a parallel redundant bus converter array, a non-isolated load point converter completes the auxiliary power supply of the T / R unit and the power supply of the array control circuit, and a fast response non-isolated proportional converter completes the drain power supply of the T / R unit, thereby achieving precise voltage stabilization power supply to the load end of the array T / R unit while improving the mission reliability of the power supply system and the power density and transient response capability of the load point converter.

[0107] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. 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 application, and should all be included in the protection scope of the present application.

Claims

1. A fast load response phased array equipment power supply system with a transfer bus architecture, characterized in that: include: A power filter and surge protector (1), a three-phase active power factor correction circuit (2), a bus converter array (3), a fast response non-isolated point-of-load converter (4), and a non-isolated point-of-load converter (5); The parallel redundant bus converter (3) array completes electrical isolation and voltage conversion from the high-voltage DC bus to the transfer bus, the non-isolated load point converter (5) completes the auxiliary power supply of the T / R unit of the phased array device and the power supply of the array control circuit, and the fast response non-isolated load point converter (4) completes the drain power supply of the T / R unit; The power filter and surge protector (1) performs EMI filtering and surge suppression on the input three-phase alternating current and then sends it to the three-phase active power factor correction circuit (2). The three-phase active power factor correction circuit (2) converts the three-phase alternating current into a stable high-voltage direct current bus voltage and then sends it to the bus converter (3) array at the input end. The bus converter (3) array converts the high-voltage direct current bus voltage into a transfer bus voltage and then sends it to the non-isolated load point converter (5) and a plurality of fast-response non-isolated load point converters (4); wherein the transfer bus voltage output by the bus converter (3) is set to an integer multiple of the output voltage of the fast-response non-isolated load point converter (4). The fast-response non-isolated load point converter (4) completes voltage reduction and voltage stabilization at a preset working ratio. Each fast-response non-isolated load point converter (4) provides drain power supply to a plurality of T / R units of the phased array device.

2. The fast load response phased array equipment power supply system with a transfer bus architecture according to claim 1, characterized in that: The bus converter (3) is a step-down converter with an input end and an output end electrically isolated. The bus converter (3) is provided with M+N blocks. The normal operation of N of the N+M bus converters (3) can ensure the normal operation of the system. When the array of the M+N bus converters (3) is started, they are started in sequence in a time-sharing manner.

3. The fast load response phased array equipment power supply system with a transfer bus architecture according to claim 1, characterized in that: The intermediate bus voltage output by the bus converter (3) is twice the output voltage of the fast response non-isolated load point converter (4), and the working ratio of the fast response non-isolated load point converter (4) is 50%.

4. The fast load response phased array equipment power supply system with a transfer bus architecture according to claim 1, characterized in that: After the multiple fast response non-isolated load point converters (4) complete the synchronization of the internal multi-phase interleaved buck circuit switch conversion through the frequency synchronization signal, the high-frequency ripple output by the fast response non-isolated load point converter (4) array is also synchronized, and the parasitic radio frequency spurious caused by the high-frequency ripple of the T / R unit drain power supply is also synchronized, and the random wide-spectrum noise is synchronized into point frequency spurious.

5. The fast load response phased array equipment power supply system with a transfer bus architecture according to claim 1, characterized in that: When the power supply of the T / R unit of the phased array equipment is a multi-point grounding system, the negative end of the transfer bus output by the bus converter (3) is grounded with low resistance.

6. The fast load response phased array equipment power supply system with a transfer bus architecture according to claim 1, characterized in that: The T / R unit power supply of the phased array device is a single-point grounding system, then: When the bus converter (3) and the fast response non-isolated load point converter (4) and the non-isolated load point converter (5) are not in the same physical structure, the positive and negative ends of the transfer bus output by the bus converter (3) are grounded through film capacitors; when they are in the same physical structure, the positive and negative ends of the high-voltage DC bus input by the bus converter (3) are grounded through film capacitors, and the negative end of the transfer bus is remotely grounded through a T / R unit.

7. The fast load response phased array equipment power supply system with a transfer bus architecture according to claim 1, characterized in that: The positive output terminal of the bus converter (3) is connected in series with an automatic switching switch transistor V1, and the bus converter (3) is automatically turned on when there is voltage at the output, and automatically turned off when there is no voltage; resistors R2 and R3 are arranged in sequence between the positive output terminal and the negative output terminal of the bus converter (3), and resistors R5 and R6 are connected in series with the transistor V2 and then connected between the positive output terminal and the negative output terminal of the bus converter (3); one end of the resistor R1 is connected to the gate of the transistor V1, and the other end is connected between the resistors R5 and R6; one end of the resistor R4 is connected between the resistors R2 and R3, and the other end is connected to the gate of the transistor V2, and the source of the transistor V2 is grounded.

8. The fast load response phased array equipment power supply system with a transfer bus architecture according to claim 1, characterized in that: When the output voltage of the bus converter (3) is normal, R2 and R3 connected in series complete the voltage division and provide a gate voltage to transistor V2 through R4 to turn on V2. After V2 is turned on, R6 is connected to the negative output terminal of the bus converter (3). R5 and R6 connected in series complete the voltage division and provide a gate voltage to transistor V1 through R1 to turn on V1, thus completing the parallel connection. When the output voltage of the bus converter (3) is abnormal, R2 and R3 connected in series cannot form a voltage division loop and cannot provide a gate voltage to turn on V2. V2 is turned off. After V2 is turned off, R5 and R6 connected in series cannot form a voltage division loop and cannot provide a gate turn-on voltage to transistor V1. V1 is turned off, thus completing the automatic removal of the faulty bus converter 3.

9. The fast load response phased array equipment power supply system with a transfer bus architecture according to claim 1, characterized in that: The fast response non-isolated load point converter (4) is a synchronous step-down multi-phase interleaved step-down voltage stabilization circuit.

10. The fast load response phased array equipment power supply system with a transfer bus architecture according to claim 1, characterized in that: The power-on startup process of the fast load response phased array equipment power supply system of the transfer bus architecture is as follows: (a) The input three-phase AC power is turned on, and the power filter and surge protector (1) work normally; (b) the three-phase active power factor correction circuit (2) is started and outputs direct current to the high voltage direct current bus; (c) The M+N bus converter array (3) is started in sequence and in time; (d) The non-isolated point-of-load converter (5) is started to supply power to the array control circuit of the phased array device and provide auxiliary power supply to the T / R unit of the phased array device; (e) The array control of the phased array equipment confirms that the T / R unit is enabled and turned off; (f) quickly responding to the startup of the non-isolated point-of-load converter (4) to provide power to the drain of the T / R unit; (g) detecting whether the output current of each fast response non-isolated load point converter (4) is normal; if there is an abnormality, returning to step (f) and turning off the enable of the fast response non-isolated load point converter (4) with abnormal output; if it is normal, executing (h); (h) Turn on the T / R unit enable; (i) Complete power-on.

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