Power supply circuit for control system and fan in flywheel energy storage system

Abstract

The utility model discloses a power supply circuit for a control system and a fan in a flywheel energy storage system, and the circuit comprises an AC / DC circuit which is respectively connected with an external alternating current and a reverse circuit 1, and is used for converting the external alternating current into a direct current, and transmitting the direct current to the reverse circuit 1; the reverse jacking circuit 1 is also connected with the DC / DC circuit and is used for transmitting the direct current to the DC / DC circuit; the reverse jacking circuit 2 is respectively connected with external direct current and the DC / DC circuit, and the reverse jacking circuit 1 and the reverse jacking circuit 2 are used for preventing reverse transmission of corresponding current; the DC / DC circuit is further connected with a control system and a draught fan and used for converting the direct current or the external direct current into 24V direct current and transmitting the 24V direct current to the control system and the draught fan, the circuit is connected with the external alternating current and the direct current in the flywheel energy storage system at the same time, and it can be guaranteed that when the direct current of the control system is powered off, the direct current can be cut off. And external alternating current is immediately converted for power supply.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the flywheel energy storage system technical field, concretely relates to a kind of power supply circuit for flywheel energy storage system control power and fan power. BACKGROUND

[0002] In flywheel energy storage system, flywheel is in high-speed rotating state, and control system needs to be in power-on state, to ensure the normal power supply of system power supply loop, ensure that control system is not out of control in emergency, ensure the safety of flywheel energy storage system.

[0003] And in the prior art, the power supply for flywheel energy storage system control system is mostly single power supply, for example, after external AC power supply or network side AC starter starts, the DC side of flywheel energy storage system is powered, and after single power supply fails, the control system of flywheel energy storage system will be powered off, so that the safety of flywheel energy storage system cannot be guaranteed.

[0004] Therefore, how to ensure that the control system of flywheel energy storage system is continuously powered on, so as to protect the safety of flywheel energy storage system, is a technical problem to be solved by those skilled in the art. INVENTION CONTENTS

[0005] The utility model aims at solving the technical problem that the control system in flywheel energy storage system in prior art loses power after single power supply fails, and the safety of flywheel energy storage system cannot be guaranteed due to no power of control system, and therefore the utility model provides a kind of power supply circuit for control system and fan in flywheel energy storage system, and the circuit includes:

[0006] AC / DC circuit is connected with external AC and anti-top circuit 1 respectively, for converting external AC into DC and transmitting to anti-top circuit 1;

[0007] The anti-top circuit 1 is also connected with DC / DC circuit, for transmitting the DC to DC / DC circuit;

[0008] Anti-top circuit 2 is connected with external DC and DC / DC circuit respectively, and anti-top circuit 1 and anti-top circuit 2 are used to prevent reverse transmission of corresponding current, and the external DC is high-voltage DC in flywheel energy storage system;

[0009] The DC / DC circuit is also connected with control system and fan, for converting the DC or external DC into 24V DC and transmitting to control system and fan.

[0010] Further, the AC / DC circuit specifically includes:

[0011] The positive pole of diode D1 and the negative pole of diode D2 are connected with one end of the external alternating current, the positive pole of diode D3 and the negative pole of diode D4 are connected with the other end of the external alternating current, the negative pole of diode D1 and the negative pole of diode D3 are connected with the inverting circuit 1, and the positive pole of diode D2 and the positive pole of diode D4 are connected with the DC / DC circuit.

[0012] Further, the inverting circuit 1 specifically comprises diode D5 and resistor R1, the positive pole of diode D5 is connected with the AC / DC circuit, the negative pole of diode D5 is connected with one end of resistor R1, and the other end of resistor R1 is connected with the DC / DC circuit.

[0013] Further, the inverting circuit 2 specifically comprises diode D6 and resistor R2, the positive pole of diode D6 is connected with one end of the external direct current, the other end of the external direct current is connected with the DC / DC circuit, the negative pole of diode D6 is connected with one end of resistor R2, and the other end of resistor R2 is connected with the DC / DC circuit.

[0014] Further, the DC / DC circuit specifically comprises:

[0015] One end of resistor R3, one end of capacitor C1 and the first end of MOS tube S1 are connected with the inverting circuit 1, one end of resistor R3, one end of capacitor C1 and the first end of MOS tube S1 are also connected with the inverting circuit 2, the other end of resistor R4, the other end of capacitor C2, the positive pole of diode D7 and the other end of capacitor C3 are connected with the AC / DC circuit, the other end of resistor R4, the other end of capacitor C2, the positive pole of diode D7 and the other end of capacitor C3 are also connected with the other end of the external direct current, the other end of resistor R3 is connected with one end of resistor R4, the other end of capacitor C1 and one end of capacitor C2 respectively, the second end of MOS tube S1 is connected with one end of inductor L1 and the negative pole of diode D7 respectively, the third end of MOS tube S1 is grounded, the other end of inductor L1 is connected with one end of capacitor C3, the other end of inductor L1 is also connected with the control system and the fan, and the other end of capacitor C3 is also connected with the control system and the fan.

[0016] Further, the DC / DC circuit is also connected with the sampling circuit and the driving circuit, and is used for transmitting the 24V direct current into the sampling circuit and the driving circuit.

[0017] Compared with the prior art, the utility model has the advantages of:

[0018] The utility model provides a kind of for flywheel energy storage system in control system and fan's power supply circuit, compared with prior art, the circuit includes AC / DC circuit, respectively with external alternating current and anti top circuit 1 connection, for converting external alternating current into direct current transmission to anti top circuit 1;The anti top circuit 1 is also connected with DC / DC circuit, for transmitting the direct current into DC / DC circuit;Anti top circuit 2 is respectively connected with external direct current and the DC / DC circuit, and the anti top circuit 1 and anti top circuit 2 are used to prevent corresponding current reverse transmission;The DC / DC circuit is also connected with control system and fan, for converting the direct current or external direct current into 24V direct current transmission to control system and fan, and the circuit is connected with external alternating current and direct current in flywheel energy storage system simultaneously, can guarantee control system when direct current power outage, immediately convert into external alternating current and power supply. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present specification, the drawings needed in the embodiments will be briefly introduced as follows. The drawings described in the following description are only some embodiments described in the present specification, and other drawings can be obtained by those skilled in the art without creative labor on the premise of these drawings.

[0020] Figure 1 As shown is the structure schematic view of the power supply circuit for control system and fan in flywheel energy storage system provided by the embodiments of the present specification. DETAILED DESCRIPTION

[0021] In order to make the person in the technical field better understand the technical solutions in the present specification, the technical solutions in the embodiments of the present specification will be described clearly and completely in the following by combining the drawings in the embodiments of the present specification. Obviously, the described embodiments are only part of the embodiments of the present specification, not all. Based on the embodiments in the present specification, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present specification.

[0022] As Figure 1 As shown is the structure schematic view of the power supply circuit for control system and fan in flywheel energy storage system provided by the embodiments of the present specification. Although the present specification provides the structure as shown in the following embodiments or drawings, more or less structure can be included in the structure based on conventional or without creative labor, and these structures are not limited to the structure shown in the embodiments or drawings of the present specification. The structure described in the actual device or terminal product application can be executed sequentially or in parallel according to the embodiment or module structure.

[0023] The power supply circuit for the control system and the fan in the flywheel energy storage system provided in the embodiments of the present application comprises:

[0024] An AC / DC circuit connected with the external alternating current and the reverse top circuit 1 respectively, for converting the external alternating current into direct current and transmitting the direct current to the reverse top circuit 1;

[0025] The reverse top circuit 1 is further connected with the DC / DC circuit, for transmitting the direct current to the DC / DC circuit;

[0026] A reverse top circuit 2 connected with the external direct current and the DC / DC circuit respectively, the reverse top circuit 1 and the reverse top circuit 2 are used for preventing the corresponding current from being transmitted in reverse, and the external direct current is high-voltage direct current in the flywheel energy storage system;

[0027] The DC / DC circuit is further connected with the control system and the fan, for converting the direct current or the external direct current into 24V direct current and transmitting the 24V direct current to the control system and the fan.

[0028] Specifically, the power supply circuit provided in the present application mainly comprises an AD / DC circuit, i.e., an alternating current to direct current circuit, a reverse top circuit 1, a reverse top circuit 2 and a DC / DC circuit. Meanwhile, the AD / DC circuit is connected with the external alternating current through an external alternating current interface, so as to access external AC 220V or AC 380V. The external alternating current is rectified into direct current through the AD / DC circuit, and then the direct current is transmitted through the reverse top circuit 1 and then through the DC / DC circuit to obtain 24V direct current. When the main loop is not powered, i.e., the direct current bus is not powered, the external direct current connected by the circuit of the present application is not powered. At this time, the external alternating current on the alternating current side normally works, and 24V direct current is still transmitted to the control system and the fan through the circuit, so as to ensure the safety of the flywheel energy storage system. Meanwhile, it is also convenient to test the function of the control system. When the alternating current side is not powered, the circuit of the present application obtains power supply through the external direct current. The external direct current is high-voltage direct current in the flywheel energy storage system, i.e., the direct current bus is powered, which can also ensure the normal work of the control system. The two reverse top circuits can limit the direct current from flowing back to the rectification loop, so as to ensure the safety of the alternating current side device. When the power supply circuit normally works, whether the external alternating current is powered off or the external direct current is powered off, it will not affect the acquisition of the other power supply, so as to ensure the normal power supply of the control system and ensure that the control system does not lose control in an emergency.

[0029] In the embodiments of the present application, the AC / DC circuit specifically comprises:

[0030] The positive pole of the diode D1 and the negative pole of the diode D2 are connected with one end of the external alternating current, the positive pole of the diode D3 and the negative pole of the diode D4 are connected with the other end of the external alternating current, the negative pole of the diode D1 and the negative pole of the diode D3 are connected with the inverse pole circuit 1, and the positive pole of the diode D2 and the positive pole of the diode D4 are connected with the DC / DC circuit.

[0031] Specifically, the AD / DC circuit, namely the rectifier circuit, is a bridge rectifier circuit composed of four rectifier diodes.

[0032] In the embodiment of the application, the inverse pole circuit 1 specifically comprises a diode D5 and a resistor R1, the positive pole of the diode D5 is connected with the AC / DC circuit, the negative pole of the diode D5 is connected with one end of the resistor R1, and the other end of the resistor R1 is connected with the DC / DC circuit. The inverse pole circuit 2 specifically comprises a diode D6 and a resistor R2, the positive pole of the diode D6 is connected with one end of the external direct current, the other end of the external direct current is connected with the DC / DC circuit, the negative pole of the diode D6 is connected with one end of the resistor R2, and the other end of the resistor R2 is connected with the DC / DC circuit.

[0033] Specifically, the inverse pole circuit 2 limits the direct current from flowing back to the main loop through the inverse pole diode D6, guarantees that the main loop is not electrified, and prevents personnel from touching the main loop by mistake in the case of unawareness, thereby causing personal safety and the like. Similarly, when the flywheel energy storage system main loop is electrified and the alternating current side is not electrified, the redundant power supply system can also work normally by obtaining power supply through the direct current incoming line, and meanwhile the inverse pole circuit 1 limits the direct current from flowing back to the rectifier loop (the rectifier loop has a lower input voltage, and the cost is considered, so the device has a lower voltage resistance, which is lower than 1200V of the direct current side device) through the inverse pole diode D5, thereby guaranteeing the safety of the alternating current side device.

[0034] In the embodiment of the application, the DC / DC circuit specifically comprises:

[0035] One end of the resistor R3, one end of the capacitor C1 and the first end of the MOS tube S1 are connected with the anti-top circuit 1, and the one end of the resistor R3, the one end of the capacitor C1 and the first end of the MOS tube S1 are also connected with the anti-top circuit 2, the other end of the resistor R4, the other end of the capacitor C2, the positive electrode of the diode D7 and the other end of the capacitor C3 are connected with the AC / DC circuit, and the other end of the resistor R4, the other end of the capacitor C2, the positive electrode of the diode D7 and the other end of the capacitor C3 are also connected with the other end of the external DC, the other end of the resistor R3 is connected with the one end of the resistor R4, the other end of the capacitor C1 and the one end of the capacitor C2 respectively, the second end of the MOS tube S1 is connected with the one end of the inductor L1 and the negative electrode of the diode D7 respectively, the third end of the MOS tube S1 is grounded, the other end of the inductor L1 is connected with the one end of the capacitor C3, and the other end of the inductor L1 is also connected with the control system and the fan, and the other end of the capacitor C3 is also connected with the control system and the fan.

[0036] Specifically, the DC / DC circuit, i.e. a direct current voltage reduction circuit, mainly consists of capacitors C1-C3, resistors R3-R4, an inductor L1, a MOS tube S1 and a diode D7, supports the bus voltage through the capacitors C1 and C2, the resistors R3 and R4 are voltage-sharing resistors, ensure that the capacitors C1 and C2 bear half of the bus voltage, realize the output of low-voltage DC 24V through the switching of the MOS, and the current-continuing voltage reduction loop composed of the inductor L1, the capacitor C3 and the diode D7, and provide the low-voltage DC 24V to the main controller, the sampling circuit, the driving circuit and the DC fan. Similarly, the internal DC interface accesses the high-voltage DC (DC 1200V) on the DC bus, outputs DC 24V through the anti-top circuit 2 and the DC / DC circuit.

[0037] In addition, the DC / DC circuit is also connected with the sampling circuit and the driving circuit, and is used for transmitting the 24V DC to the sampling circuit and the driving circuit.

[0038] It should be understood that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can be intervening elements; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be intervening elements, and in addition, "connected" as used herein can include wireless connection; the phrase "and / or" as used herein includes any one or more of the associated listed items, and all combinations thereof.

[0039] It should be understood that the various aspects of the application can be implemented in hardware, software, firmware or a combination thereof. In the above embodiments, various steps or methods can be implemented in software or firmware that is stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, and in another embodiment, any of the following techniques, which are well-known in the art, can be used to implement the various techniques for implementing the logic, including but not limited to: discrete logic circuitry having logic gates for implementing logic functions upon data signals, application specific integrated circuits having appropriate combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), and the like.

[0040] Those skilled in the art can understand that all or part of the steps carried out by the above-mentioned embodiment method can be completed by programs instructing related hardware, and the programs can be stored in a computer readable storage medium, and when the programs are executed, one or a combination of the steps of the method embodiment is included.

[0041] In addition, the functional units in each embodiment of the present application can be integrated into one processing module, or each unit can be physically present separately, or two or more units can be integrated into one module. The above integrated module can be realized in the form of hardware or in the form of a software function module. When the integrated module is realized in the form of a software function module and sold or used as an independent product, it can also be stored in a computer readable storage medium.

[0042] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0043] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0044] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

[0045] The above is further detailed description of the utility model in combination with specific preferred embodiments, and cannot be deemed as limitation of the specific implementation of the utility model to these descriptions. For ordinary skilled persons in the technical field to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all of them shall be deemed as belonging to the protection scope of the utility model.

Claims

1. A power supply circuit for the control system and wind turbine in a flywheel energy storage system, characterized in that, The power supply circuit includes: The AC / DC circuit is connected to the external AC power and the inverter circuit 1 respectively, and is used to convert the external AC power into DC power and transmit it to the inverter circuit 1. The anti-top circuit 1 is also connected to a DC / DC circuit for transmitting the DC power to the DC / DC circuit. The anti-top circuit 2 is connected to the external DC power and the DC / DC circuit respectively. The anti-top circuit 1 and the anti-top circuit 2 are used to prevent the corresponding current from being transmitted in reverse. The external DC power is the high voltage DC power in the flywheel energy storage system. The DC / DC circuit is also connected to the control system and the fan, and is used to convert the DC power or external DC power into 24V DC power and transmit it to the control system and the fan.

2. The power supply circuit for the control system and wind turbine in a flywheel energy storage system as described in claim 1, characterized in that, The AC / DC circuit specifically includes: The positive terminal of diode D1 and the negative terminal of diode D2 are both connected to one end of the external AC power supply, the positive terminal of diode D3 and the negative terminal of diode D4 are both connected to the other end of the external AC power supply, the negative terminals of diode D1 and diode D3 are both connected to the reverse circuit 1, and the positive terminals of diode D2 and diode D4 are both connected to the DC / DC circuit.

3. The power supply circuit for the control system and wind turbine in a flywheel energy storage system as described in claim 1, characterized in that, The reverse circuit 1 specifically includes a diode D5 and a resistor R1. The positive terminal of the diode D5 is connected to the AC / DC circuit, the negative terminal of the diode D5 is connected to one end of the resistor R1, and the other end of the resistor R1 is connected to the DC / DC circuit.

4. The power supply circuit for the control system and wind turbine in a flywheel energy storage system as described in claim 1, characterized in that, The anti-top circuit 2 specifically includes a diode D6 and a resistor R2. The positive terminal of the diode D6 is connected to one end of an external DC power supply, and the other end of the external DC power supply is connected to a DC / DC circuit. The negative terminal of the diode D6 is connected to one end of the resistor R2, and the other end of the resistor R2 is connected to the DC / DC circuit.

5. The power supply circuit for the control system and wind turbine in a flywheel energy storage system as described in claim 4, characterized in that, The DC / DC circuit specifically includes: One end of resistor R3, one end of capacitor C1, and the first end of MOSFET S1 are all connected to the inverting circuit 1. One end of resistor R3, one end of capacitor C1, and the first end of MOSFET S1 are also connected to the inverting circuit 2. The other end of resistor R4, the other end of capacitor C2, the positive terminal of diode D7, and the other end of capacitor C3 are all connected to the AC / DC circuit. The other end of resistor R4, the other end of capacitor C2, the positive terminal of diode D7, and the other end of capacitor C3 are also connected to the other end of the external DC power supply. The other end of resistor R3 is connected to one end of resistor R4, the other end of capacitor C1, and one end of capacitor C2. The second end of MOSFET S1 is connected to one end of inductor L1 and the negative terminal of diode D7. The third end of MOSFET S1 is grounded. The other end of inductor L1 is connected to one end of capacitor C3. The other end of inductor L1 is also connected to the control system and the fan. The other end of capacitor C3 is also connected to the control system and the fan.

6. The power supply circuit for the control system and wind turbine in the flywheel energy storage system as described in claim 1, characterized in that, The DC / DC circuit is also connected to the sampling circuit and the drive circuit to transmit the 24V DC power to the sampling circuit and the drive circuit.

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