Uninterruptible protection power supply system for magnetic suspension equipment

Abstract

The utility model relates to the technical field of magnetic suspension equipment power supply protection, in particular to an uninterruptible protection power supply system for magnetic suspension equipment, which comprises a power supply module with an input end connected with an alternating current mains supply end; the input end of the first AC / DC module is connected with the output end of the power supply module, the output end of the first AC / DC module is connected with the magnetic suspension system, and the first AC / DC module is used for converting alternating current into direct current to supply power to the magnetic suspension system; the input end of the charging and discharging assembly is connected with the output end of the power supply module or the output end of the first AC / DC module, the output end of the charging and discharging assembly is connected with the magnetic suspension system, and the charging and discharging assembly is used for charging by using the direct current supplied by the power supply module and providing the direct current to the magnetic suspension system after the alternating current mains supply loses power. According to the utility model, under the condition that the external commercial power suddenly loses power, the charging and discharging assembly can still supply power to the magnetic suspension system, and the process that the direct current of the battery pack is inverted and then rectified in a UPS + AC / DC scheme is omitted, so that the power generation efficiency is improved, the battery capacity can be reduced, the conversion rate is improved, and the system cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of magnetic suspension equipment power protection, in particular to a kind of uninterrupted protection power supply system of magnetic suspension equipment. BACKGROUND

[0002] Magnetic suspension high-speed motor relies on magnetic suspension bearing controller to realize that rotor is stably and reliably suspended in the center position of mechanical space. Since magnetic suspension controller is electronic equipment, if power failure occurs suddenly during equipment operation, magnetic suspension controller will immediately stop suspension control, at this time, the shaft of high-speed operation will no longer be suspended and fall on the stator part of the equipment, thereby causing serious damage to the equipment. At the same time, after power failure occurs, the control system of the entire unit needs to record fault information or report fault, and it is also hoped to maintain power supply during this process. In view of this problem, the current common backup power supply scheme is used to solve this problem, that is, UPS (uninterruptible power supply) is added to supply power to the control system of the unit and the magnetic suspension controller. Since UPS is an alternating current output, AC / DC needs to be added between UPS and the direct current bus of magnetic suspension controller for voltage matching.

[0003] The problem of the existing scheme is that the system adds UPS and AC / DC power supply. When power failure occurs, the battery pack in UPS is inverted and then AC / DC is used to obtain uninterrupted direct current power supply. The system design is redundant, which reduces the efficiency of power transmission and increases the additional cost. Moreover, the price of UPS with high reliability on the market is high, which increases the system cost. SUMMARY

[0004] The present application designs an uninterrupted protection power supply system for magnetic suspension equipment to maintain the normal working state of the magnetic suspension system in the case of sudden power failure of external mains, so as to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] An uninterrupted protection power supply system for magnetic suspension equipment, comprising:

[0007] A power supply module, the input end is connected with the alternating current mains power supply end;

[0008] A first AC / DC module, the input end is connected with the output end of the power supply module, the output end is connected with the magnetic suspension system, and is used for converting alternating current into direct current to supply power to the magnetic suspension system;

[0009] A charging and discharging assembly, the input end is connected with the output end of the power supply module or the output end of the first AC / DC module, the output end is connected with the magnetic suspension system, and is used for charging by using the direct current supplied by the power supply module and providing direct current to the magnetic suspension system for power supply after the alternating current mains power failure.

[0010] Further, the charge-discharge assembly comprises:

[0011] The energy storage module is connected with the first DC / DC module or the second AC / DC module at the input end and connected with the magnetic levitation system at the output end, and is used for storing electric quantity under normal power supply of commercial power and boosting or reducing the stored electric quantity to the required direct current power supply voltage under sudden power failure;

[0012] The second DC / DC module is connected with the output end of the first AC / DC module at the input end and connected with the input end of the energy storage module at the output end, and is used for boosting or reducing the voltage of the direct current electric quantity rectified by the first AC / DC module to the required direct current charging voltage of the energy storage module;

[0013] The second DC / DC module can be replaced by a second AC / DC module, the input end of the second AC / DC module is connected with the output end of the power supply module, and the output end is connected with the input end of the energy storage module, and is used for charging the energy storage module under normal power supply of commercial power;

[0014] The third DC / DC module is connected with the output end of the energy storage module at the input end and connected with the magnetic levitation system at the output end, and is used for boosting or reducing the stored electric quantity of the energy storage module to the required direct current power supply voltage of the magnetic levitation system.

[0015] Further, the energy storage module is a module that can be repeatedly charged and discharged, and is selected from one of a lithium battery, a lead-acid battery, a super capacitor, a flow battery and a sodium-sulfur battery.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] The utility model discloses a power supply system of magnetic levitation system, which comprises a power supply module, a first DC / DC module, a second AC / DC module and an energy storage module. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The power supply system of the magnetic levitation system corresponding to example 1 is shown in the figure;

[0019] Figure 2 The power supply system of the magnetic levitation system corresponding to example 2 is shown in the figure.

[0020] The meanings of the main reference signs in the figure are as follows:

[0021] 1, power supply module, 2, first AC / DC module, 3, first AC / DC module, 4, second DC / DC module, 5, energy storage module, 6, third DC / DC module. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] An uninterrupted protection power supply system of a magnetic levitation device, comprising:

[0024] A power supply module, an input end of which is connected with an AC commercial power supply end;

[0025] A first AC / DC module, an input end of which is connected with an output end of the power supply module, and an output end of which is connected with the magnetic levitation system, for converting AC power into DC power to supply power to the magnetic levitation system;

[0026] A charge and discharge assembly, an input end of which is connected with the output end of the power supply module or the output end of the first AC / DC module, and an output end of which is connected with the magnetic levitation system, for charging by using the DC power supplied by the power supply module and providing DC power to the magnetic levitation system to supply power after AC commercial power is lost.

[0027] The charge and discharge assembly comprises:

[0028] An energy storage module, an input end of which is connected with the first DC / DC module or the second AC / DC module, and an output end of which is connected with the magnetic levitation system, for storing power under normal commercial power supply and boosting or reducing the stored power to a required DC power supply voltage under a sudden power loss;

[0029] A second DC / DC module, an input end of which is connected with an output end of the first AC / DC module, and an output end of which is connected with an input end of the energy storage module, for boosting or reducing the voltage of the DC power rectified by the first AC / DC module to the required DC charging voltage of the energy storage module;

[0030] The second DC / DC module can be replaced by a second AC / DC module, an input end of the second AC / DC module is connected with an output end of the power supply module, and an output end of the second AC / DC module is connected with an input end of the energy storage module, for charging the energy storage module under normal commercial power supply;

[0031] The third DC / DC module has its input end connected to the output end of the energy storage module and its output end connected to the magnetic levitation system. It is used to raise or lower the amount of electricity stored in the energy storage module to the DC power supply voltage required by the magnetic levitation system.

[0032] The energy storage module is a module that can be repeatedly charged and discharged, and is selected from one of the following: lithium battery, lead-acid battery, supercapacitor, flow battery and sodium-sulfur battery. Example

[0033] System Configuration:

[0034] Install the first and second AC / DC modules to ensure a stable mains power input.

[0035] Install a third DC / DC module for voltage conversion.

[0036] Install energy storage modules, choosing from lithium batteries, lead-acid batteries, or supercapacitors.

[0037] Normal power supply operation:

[0038] The first AC / DC module is responsible for converting alternating current (AC) into direct current (DC) to supply the load.

[0039] The second AC / DC module is responsible for charging the energy storage module and maintaining its power.

[0040] Emergency power supply operation:

[0041] When the mains power is interrupted, the third DC / DC module converts the energy stored in the energy storage module into the required voltage to supply the load.

[0042] System monitoring and maintenance:

[0043] Regularly check the working status of the first, second, and third AC / DC modules.

[0044] Monitor the charging status and power level of the energy storage module.

[0045] Maintain the battery management system (BMS) to ensure battery safety and extend battery life.

[0046] Troubleshooting:

[0047] Set up a fault detection mechanism so that the system can immediately switch to backup power once a problem is detected.

[0048] Conduct regular system tests to ensure a rapid response in emergency situations.

[0049] like Figure 1 As shown, under normal mains power supply conditions, electrical energy passes through... Figure 1 The No. 1 power supply line; in the event of a mains power outage, electrical energy is supplied through... Figure 1 Zhong No. 2 power supply line. Example

[0050] System Configuration:

[0051] Install a first AC / DC module for alternating current conversion.

[0052] Install the second and third DC / DC modules for voltage conversion.

[0053] Install energy storage modules, choosing from lithium batteries, lead-acid batteries, or supercapacitors.

[0054] Normal power supply operation:

[0055] The first AC / DC module is responsible for converting alternating current (AC) into direct current (DC) to supply the load.

[0056] The second DC / DC module is responsible for charging the energy storage module and maintaining its power.

[0057] Emergency power supply operation:

[0058] When the mains power is interrupted, the third DC / DC module converts the energy stored in the energy storage module into the required voltage to supply the load.

[0059] System monitoring and maintenance:

[0060] Regularly check the working status of the first AC / DC and the second and third DC / DC modules.

[0061] Monitor the charging status and power level of the energy storage module.

[0062] Maintain the battery management system (BMS) to ensure battery safety and extend battery life.

[0063] Troubleshooting:

[0064] Set up a fault detection mechanism so that the system can immediately switch to backup power once a problem is detected.

[0065] Conduct regular system tests to ensure a rapid response in emergency situations.

[0066] like Figure 2 As shown, under normal mains power supply conditions, electrical energy passes through... Figure 2 The No. 1 power supply line; in the event of a mains power outage, electrical energy is supplied through... Figure 2 Zhong No. 2 power supply line.

[0067] Additional steps:

[0068] Environmental adaptability testing:

[0069] The energy storage modules undergo environmental adaptability tests, including temperature and humidity tests, to ensure stable operation in various environments.

[0070] Safety precautions:

[0071] Design overcharge, overdischarge, short circuit protection measures to prevent battery damage or safety incidents.

[0072] Energy efficiency management:

[0073] Implement energy efficiency management strategies to optimize energy use and reduce energy consumption.

[0074] Through these steps, the smooth implementation and stable operation of the two schemes can be ensured, and the reliability and safety of the system can be improved.

[0075] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model, any reference signs in the claims should not be regarded as limiting the involved claims.

Claims

1. A magnetic levitation apparatus uninterruptible power supply system, characterized by comprising: The application relates to a power supply system for a magnetic levitation system, which comprises: a power supply module, the input end of which is connected with an AC power supply end; a first AC / DC module, the input end of which is connected with the output end of the power supply module, and the output end of which is connected with the magnetic levitation system, and which is used for converting AC power into DC power to supply the magnetic levitation system; a charge-discharge assembly, the input end of which is connected with the output end of the power supply module or the output end of the first AC / DC module, and the output end of which is connected with the magnetic levitation system, and which is used for charging by using the DC power supplied by the power supply module and providing DC power to supply the magnetic levitation system after AC power is lost; the charge-discharge assembly comprises: a storage module, the input end of which is connected with the first DC / DC module or the second AC / DC module, and the output end of which is connected with the magnetic levitation system, and which is used for storing power under normal power supply and boosting or reducing the stored power to the required DC power supply voltage under a sudden power loss; a second DC / DC module, the input end of which is connected with the output end of the first AC / DC module, and the output end of which is connected with the input end of the storage module, and which is used for boosting or reducing the voltage of the DC power rectified by the first AC / DC module from AC power to the required DC charging voltage of the storage module; a second AC / DC module, the input end of which is connected with the output end of the power supply module, and the output end of which is connected with the input end of the storage module, and which is used for charging the storage module under normal power supply; a third DC / DC module, the input end of which is connected with the output end of the storage module, and the output end of which is connected with the magnetic levitation system, and which is used for boosting or reducing the stored power of the storage module to the required DC power supply voltage of the magnetic levitation system.

2. The magnetic levitation apparatus uninterruptible power supply system according to claim 1, characterized by, The storage module is a module that can be repeatedly charged and discharged, and is selected from one of a lithium battery, a lead-acid battery, a super capacitor, a flow battery and a sodium-sulfur battery.

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