Hot backup parallel current system and method based on non-contact power supply system

Abstract

The invention discloses a hot backup parallel current system and method based on a non-contact power supply system, and relates to the technical field of power distribution cabinets, and the method comprises the following steps: S1, a power supply cabinet A and a power supply cabinet B are started at the same time, the power supply cabinet A and the power supply cabinet B are in parallel operation, the power supply cabinet A closes a first relay K1, the power supply cabinet A outputs 25A, the power supply cabinet B closes a second relay K2, the power supply cabinet B outputs 25A, and the power supply cabinet A outputs 25A; at the moment, the power supply cabinet A and the power supply cabinet B are connected in parallel to form 50A at the track power supply; s2, when the power supply cabinet A fails, a relay K1 at the power supply cabinet A is disconnected, the voltage of the power supply cabinet B is increased from 25A to 50A, and the 50A track power supply is kept to run continuously; through cooperative work of the power supply cabinet A, the power supply cabinet B and the parallel current system, the power supply cabinet A and the power supply cabinet B output at the same time, when one of the power supply cabinet A and the power supply cabinet B breaks down, the other cabinet is switched to operate independently, maintenance can be conducted without power off, and the loss of a production line is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution cabinets, and in particular to a hot backup and current paralleling system and method based on a contactless power supply system. Background Art

[0002] AMHS plays an important role in the FAB clean room of semiconductor production workshop, among which OHT overhead crane plays an important role in the handling process. In the clean room, the OHT overhead crane is powered by a non-contact power supply system. The power supply equipment does not come into contact with the vehicle body, avoiding the danger of static electricity and sparks, which conforms to the working environment of the clean room. The electromagnetic induction phenomenon between the coil and the alternating current provides uninterrupted power supply for the electrical equipment. The non-contact power supply does not need to charge the overhead crane, and can run 24 hours a day without interruption, providing protection for semiconductor production operations.

[0003] The contactless power supply consists of three parts: power supply cabinet, power supply unit, and boost board. The power supply cabinet first rectifies the 380V three-phase electricity into 500V DC, and then inverts it into 20KHz AC, and uses Litz wire to lay power for the track. The power supply unit is installed in the electrical equipment and allows it to travel on the track. The driver is composed of a coil and a magnetic core. The size and shape of the power supply unit can be changed according to the shape of the track and the use environment, and then electromagnetic induction is used to generate AC to provide power. In the electrical equipment, the induced AC power alone cannot meet the power supply requirements of high-power equipment. The boost circuit is used to boost the voltage and output 300V DC to provide continuous power for the equipment.

[0004] On the existing basis, if we want to meet the 24-hour continuous power supply of the dust-free workshop, there is no redundant measure. In the case of abnormality in the power supply cabinet, the equipment may be powered off and stop working, causing certain losses. This will not only affect the output of production, but also may cause equipment failure and safety hazards. Since there is only one distribution cabinet working at work, it can work stably under normal conditions. If an abnormality occurs, it will cause the cabinet to fail, followed by a series of losses and hidden dangers. Therefore, we propose a hot backup and current system and method based on a contactless power supply system. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a hot backup and current system and method based on a contactless power supply system.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A hot backup parallel current system based on a contactless power supply system comprises a power supply cabinet A, a power supply cabinet B, a parallel current system and a track power supply.

[0008] The parallel current system includes an inductor 1 L1, an inductor 2 L2, an inductor 3 L3, an inductor 4 L4, a capacitor 1 C1, a capacitor 2 C2, a transformer 1 T1, a transformer 2 T2, a relay 1 K1, a relay 2 K2, and a resistor R1;

[0009] One end of the inductor L1 is electrically connected to the positive electrode of the power supply cabinet A, one end of the capacitor C1 and one end of the inductor L2 are both electrically connected to the other end of the inductor L1, the other end of the capacitor C1 and the negative electrode of the transformer T1 are both electrically connected to the negative electrode of the power supply cabinet A, and the other end of the inductor L2 is electrically connected to the positive electrode of the transformer T1;

[0010] One end of the inductor L3 is electrically connected to the positive electrode of the power supply cabinet B, one end of the capacitor C2 and one end of the inductor L4 are electrically connected to the other end of the inductor L3, the other end of the capacitor C2 and the negative electrode of the transformer T2 are electrically connected to the negative electrode of the power supply cabinet B, and the other end of the inductor L4 is electrically connected to the positive electrode of the transformer T2;

[0011] The positive pole of the transformer 1 T1 is electrically connected to one end of the relay 1 K1, the other end of the relay 1 K1 and one end of the relay 2 K2 are both electrically connected to one end of the track power supply, the other end of the track power supply is electrically connected to one end of the resistor R1, the negative pole of the transformer 1 T1 and the negative pole of the transformer 1 T2 are both electrically connected to the other end of the resistor R1, and the other end of the relay 2 K2 is electrically connected to the positive pole of the transformer 2 T2.

[0012] Preferably, the relay 1 K1 and the relay 2 K2 are both used as switches.

[0013] Preferably, the inductor 1 L1, the inductor 2 L2, and the capacitor 1 C1 are all arranged inside the power supply cabinet A, and the inductor 3 L3, the inductor 4 L4, and the capacitor 2 C2 are all arranged inside the power supply cabinet B.

[0014] Preferably, the power supply cabinet A and the power supply cabinet B communicate internally through optical fiber signals and 485 buses. When the power supply cabinet A or the power supply cabinet B is in operation and charging status, the output signal is 1; when the power supply cabinet A or the power supply cabinet B is in fault status, stopped or waiting status, the output signal is 0.

[0015] A hot backup and current paralleling method based on a contactless power supply system comprises the following steps:

[0016] S1, power supply cabinet A and power supply cabinet B are started at the same time. At this time, power supply cabinet A and power supply cabinet B are operated in parallel. Power supply cabinet A closes relay K1, and power supply cabinet A outputs 25A. Power supply cabinet B closes relay K2, and power supply cabinet B outputs 25A. At this time, power supply cabinet A and power supply cabinet B are connected in parallel at the track power supply to form 50A.

[0017] S2. When the power supply cabinet A fails, the relay K1 at the power supply cabinet A will be disconnected, and the power supply cabinet B will increase the voltage from 25A to 50A, keeping the track power supply 50A running;

[0018] S3. When the power supply cabinet A is repaired and powered on again, the power supply cabinet B will be reduced from 50A to 25A. At this time, the power supply cabinets A and B will be connected in parallel for output;

[0019] S4. When the power supply cabinet B fails, the relay K2 of the power supply cabinet B will be disconnected, and the power supply cabinet B will increase the voltage from 25A to 50A, keeping the track power supply 50A running;

[0020] S5. When the power supply cabinet B is repaired and powered on again, the power supply cabinet A will drop from 50A to 25A. At this time, the power supply cabinets A and B will output in parallel.

[0021] Preferably, in step S1, when power supply cabinet A detects that power supply cabinet B is in operation or charging state, power supply cabinet A will output 25A current;

[0022] When power supply cabinet B detects that power supply cabinet A is running or charging, power supply cabinet B will output 25A current.

[0023] Preferably, in step S2, when power supply cabinet A fails, power supply cabinet B will detect that the state of power supply cabinet A is not running or charging, and power supply cabinet B will increase to 50A to continue running.

[0024] Preferably, in step S3, after the fault of power supply cabinet A is repaired, power supply cabinet B detects that power supply cabinet A has entered the charging or running state. When power supply cabinet B is about to enter the running state, power supply cabinet B will drop to 25A, and power supply cabinet B and power supply cabinet A continue to be connected in parallel.

[0025] Preferably, in step S4, when the power supply cabinet B fails, the power supply cabinet A will detect that the state of the power supply cabinet B is not running or charging, and the power supply cabinet A will increase to 50A to continue running.

[0026] Preferably, in step S5, after the fault of power supply cabinet B is repaired, power supply cabinet A detects that power supply cabinet B has entered the charging or running state. When power supply cabinet A is about to enter the running state, power supply cabinet A will drop to 25A, and power supply cabinet A and power supply cabinet B continue to be connected in parallel.

[0027] The beneficial effects of the present invention are:

[0028] In the present invention, through the dual cabinet design of power supply cabinet A and power supply cabinet B, the power supply of the power supply cabinets has a redundant effect, and further reflects non-contact power supply; through the cooperation of power supply cabinet A, power supply cabinet B and the parallel current system, power supply cabinet A and power supply cabinet B output at the same time. When one of the power supply cabinet A or power supply cabinet B fails, it switches to the other cabinet to operate independently, which can be repaired without power outage, greatly reducing the loss of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The present invention is a schematic structural diagram of a hot backup and current paralleling system and method based on a contactless power supply system. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely 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, rather than all the embodiments.

[0031] Embodiment 1:

[0032] As attached Figure 1 As shown, a hot backup parallel current system based on a contactless power supply system includes a power supply cabinet A, a power supply cabinet B, a parallel current system and a track power supply.

[0033] The parallel current system includes an inductor 1 L1, an inductor 2 L2, an inductor 3 L3, an inductor 4 L4, a capacitor 1 C1, a capacitor 2 C2, a transformer 1 T1, a transformer 2 T2, a relay 1 K1, a relay 2 K2, and a resistor R1;

[0034] One end of the inductor L1 is electrically connected to the positive electrode of the power supply cabinet A, one end of the capacitor C1 and one end of the inductor L2 are both electrically connected to the other end of the inductor L1, the other end of the capacitor C1 and the negative electrode of the transformer T1 are both electrically connected to the negative electrode of the power supply cabinet A, and the other end of the inductor L2 is electrically connected to the positive electrode of the transformer T1;

[0035] One end of the inductor L3 is electrically connected to the positive electrode of the power supply cabinet B, one end of the capacitor C2 and one end of the inductor L4 are both electrically connected to the other end of the inductor L3, the other end of the capacitor C2 and the negative electrode of the transformer T2 are both electrically connected to the negative electrode of the power supply cabinet B, and the other end of the inductor L4 is electrically connected to the positive electrode of the transformer T2;

[0036] The positive pole of transformer 1 T1 is electrically connected to one end of relay 1 K1, the other end of relay 1 K1 and one end of relay 2 K2 are both electrically connected to one end of the track power supply, the other end of the track power supply is electrically connected to one end of resistor R1, the negative pole of transformer 1 T1 and the negative pole of transformer 1 T2 are both electrically connected to the other end of resistor R1, and the other end of relay 2 K2 is electrically connected to the positive pole of transformer 2 T2.

[0037] Relay 1 K1 and relay 2 K2 are both used as switches. Inductor 1 L1, inductor 2 L2, and capacitor 1 C1 are all arranged inside power supply cabinet A. Inductor 3 L3, inductor 4 L4, and capacitor 2 C2 are all arranged inside power supply cabinet B.

[0038] It is worth mentioning that the power supply cabinets A and B communicate internally through optical fiber signals and 485 buses. When the power supply cabinet A or B is in operation and charging status, the output signal is 1. When the power supply cabinet A or B is in fault, stop or wait status, the output signal is 0.

[0039] Embodiment 2:

[0040] A hot backup and current paralleling method based on a contactless power supply system comprises the following steps:

[0041] S1, power supply cabinet A and power supply cabinet B are started at the same time. At this time, power supply cabinet A and power supply cabinet B are operated in parallel. Power supply cabinet A closes relay K1, and power supply cabinet A outputs 25A. Power supply cabinet B closes relay K2, and power supply cabinet B outputs 25A. At this time, power supply cabinet A and power supply cabinet B are connected in parallel at the track power supply to form 50A.

[0042] In the above technical solution, when power supply cabinet A detects that power supply cabinet B is running or charging, power supply cabinet A will output 25A current; when power supply cabinet B detects that power supply cabinet A is running or charging, power supply cabinet B will output 25A current.

[0043] S2. When the power supply cabinet A fails, the relay K1 at the power supply cabinet A will be disconnected, and the power supply cabinet B will increase the voltage from 25A to 50A, keeping the track power supply 50A running;

[0044] In the above technical solution, when power supply cabinet A fails, power supply cabinet B will detect that the state of power supply cabinet A is not running or charging, and power supply cabinet B will increase to 50A to continue running.

[0045] S3. When the power supply cabinet A is repaired and powered on again, the power supply cabinet B will be reduced from 50A to 25A. At this time, the power supply cabinets A and B will be connected in parallel for output;

[0046] In the above technical solution, when the fault of power supply cabinet A is repaired, power supply cabinet B detects that power supply cabinet A has entered the charging or running state. When power supply cabinet B is about to enter the running state, power supply cabinet B will drop to 25A, and power supply cabinet B and power supply cabinet A will continue to be connected in parallel.

[0047] S4. When the power supply cabinet B fails, the relay K2 of the power supply cabinet B will be disconnected, and the power supply cabinet B will increase the voltage from 25A to 50A, keeping the track power supply 50A running;

[0048] In the above technical solution, when the power supply cabinet B fails, the power supply cabinet A will detect that the state of the power supply cabinet B is not running or charging, and the power supply cabinet A will increase to 50A to continue running.

[0049] S5. When the power supply cabinet B is repaired and powered on again, the power supply cabinet A will drop from 50A to 25A. At this time, the power supply cabinets A and B will output in parallel.

[0050] In the above technical solution, when the fault of power supply cabinet B is repaired, power supply cabinet A detects that power supply cabinet B has entered the charging or running state. When power supply cabinet A is about to enter the operation, power supply cabinet A will drop to 25A, and power supply cabinet A and power supply cabinet B will continue to be connected in parallel.

[0051] For the above structure and process, please refer to Figure 1 .

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hot backup and current paralleling system based on a contactless power supply system, characterized in that: It includes power supply cabinet A, power supply cabinet B, parallel current system and track power supply. The parallel current system includes an inductor 1 L1, an inductor 2 L2, an inductor 3 L3, an inductor 4 L4, a capacitor 1 C1, a capacitor 2 C2, a transformer 1 T1, a transformer 2 T2, a relay 1 K1, a relay 2 K2, and a resistor R1; One end of the inductor L1 is electrically connected to the positive electrode of the power supply cabinet A, one end of the capacitor C1 and one end of the inductor L2 are both electrically connected to the other end of the inductor L1, the other end of the capacitor C1 and the negative electrode of the transformer T1 are both electrically connected to the negative electrode of the power supply cabinet A, and the other end of the inductor L2 is electrically connected to the positive electrode of the transformer T1; One end of the inductor L3 is electrically connected to the positive electrode of the power supply cabinet B, one end of the capacitor C2 and one end of the inductor L4 are electrically connected to the other end of the inductor L3, the other end of the capacitor C2 and the negative electrode of the transformer T2 are electrically connected to the negative electrode of the power supply cabinet B, and the other end of the inductor L4 is electrically connected to the positive electrode of the transformer T2; The positive pole of the transformer 1 T1 is electrically connected to one end of the relay 1 K1, the other end of the relay 1 K1 and one end of the relay 2 K2 are both electrically connected to one end of the track power supply, the other end of the track power supply is electrically connected to one end of the resistor R1, the negative pole of the transformer 1 T1 and the negative pole of the transformer 1 T2 are both electrically connected to the other end of the resistor R1, and the other end of the relay 2 K2 is electrically connected to the positive pole of the transformer 2 T2.

2. A hot backup parallel current system based on a contactless power supply system according to claim 1, characterized in that: The relay 1 K1 and the relay 2 K2 are both used as switches.

3. A hot backup parallel current system based on a contactless power supply system according to claim 1, characterized in that: The inductor 1 L1, the inductor 2 L2, and the capacitor 1 C1 are all arranged inside the power supply cabinet A, and the inductor 3 L3, the inductor 4 L4, and the capacitor 2 C2 are all arranged inside the power supply cabinet B.

4. A hot backup and current paralleling system based on a contactless power supply system according to claim 3, characterized in that: The power supply cabinet A and the power supply cabinet B communicate with each other through optical fiber signals and 485 bus. When the power supply cabinet A or the power supply cabinet B is in operation and charging status, the output signal is 1. When the power supply cabinet A or the power supply cabinet B is in failure, stop or waiting status, the output signal is 0.

5. A hot backup and current method based on a contactless power supply system, characterized in that: The following steps are involved: S1, power supply cabinet A and power supply cabinet B are started at the same time. At this time, power supply cabinet A and power supply cabinet B are operated in parallel. Power supply cabinet A closes relay K1, and power supply cabinet A outputs 25A. Power supply cabinet B closes relay K2, and power supply cabinet B outputs 25A. At this time, power supply cabinet A and power supply cabinet B are connected in parallel at the track power supply to form 50A. S2. When the power supply cabinet A fails, the relay K1 at the power supply cabinet A will be disconnected, and the power supply cabinet B will increase the voltage from 25A to 50A, keeping the track power supply 50A running; S3. When the power supply cabinet A is repaired and powered on again, the power supply cabinet B will be reduced from 50A to 25A. At this time, the power supply cabinets A and B will be connected in parallel for output; S4. When the power supply cabinet B fails, the relay K2 of the power supply cabinet B will be disconnected, and the power supply cabinet B will increase the voltage from 25A to 50A, keeping the track power supply 50A running; S5. When the power supply cabinet B is repaired and powered on again, the power supply cabinet A will drop from 50A to 25A. At this time, the power supply cabinets A and B will output in parallel.

6. A hot backup and current method based on a contactless power supply system according to claim 1, characterized in that: In step S1, when power supply cabinet A detects that power supply cabinet B is in operation or charging state, power supply cabinet A will output 25A current; When power supply cabinet B detects that power supply cabinet A is running or charging, power supply cabinet B will output 25A current.

7. A hot backup and current method based on a contactless power supply system according to claim 6, characterized in that: In step S2, when the power supply cabinet A fails, the power supply cabinet B will detect that the state of the power supply cabinet A is not running or charging, and the power supply cabinet B will increase to 50A to continue running.

8. A hot backup and current method based on a contactless power supply system according to claim 7, characterized in that: In step S3, after the fault of power supply cabinet A is repaired, power supply cabinet B detects that power supply cabinet A has entered the charging or running state. When power supply cabinet B is about to enter the running state, power supply cabinet B will drop to 25A, and power supply cabinet B and power supply cabinet A continue to be connected in parallel.

9. A hot backup and current method based on a contactless power supply system according to claim 6, characterized in that: In step S4, when the power supply cabinet B fails, the power supply cabinet A will detect that the state of the power supply cabinet B is not running or charging, and the power supply cabinet A will increase to 50A to continue running.

10. A hot backup and current method based on a contactless power supply system according to claim 9, characterized in that: In step S5, after the fault of power supply cabinet B is repaired, power supply cabinet A detects that power supply cabinet B has entered the charging or running state. When power supply cabinet A is about to enter the running state, power supply cabinet A will drop to 25A, and power supply cabinet A and power supply cabinet B continue to be connected in parallel.

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