CN219067922U - Double-charging energy storage variable frequency driving system for central air conditioner - Google Patents
Double-charging energy storage variable frequency driving system for central air conditioner Download PDFInfo
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- CN219067922U CN219067922U CN202223424581.0U CN202223424581U CN219067922U CN 219067922 U CN219067922 U CN 219067922U CN 202223424581 U CN202223424581 U CN 202223424581U CN 219067922 U CN219067922 U CN 219067922U
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Abstract
The utility model discloses a double-charging energy-storage variable-frequency driving system for a central air conditioner, which comprises the following components: the RBR/S/T thyristor is connected with the thyristor-driven IR/S/T driving plate in a three-phase half-control rectification mode, and a public energy storage link is connected across the rectifying assembly and comprises N capacitors C1-CN connected in series; in the external energy storage link, the DC/DC conversion module is respectively connected with the PDU power distribution module and the photovoltaic direct current power supply management module; the PDU power distribution module is connected with the series rechargeable battery pack; and each inversion assembly comprises three IU/V/WIGBT modules and three IU/V/WQ driving boards, and each IU/V/WIGBT module is directly connected with one IU/V/WQ driving board to form an inversion bridge. The emergency power failure control device can continuously run under the emergency power failure condition, and the use reliability of users is improved; the low-voltage charging is provided in the charging process, so that the charging device is safer and more reliable, and the investment of users can be saved.
Description
Technical Field
The utility model relates to the technical field of frequency conversion, in particular to a double-charging energy-storage frequency conversion driving system for a central air conditioner.
Background
With the economic development, the energy efficiency problem and the environmental protection problem are more and more concerned, and in order to save energy and reduce emission, the central air conditioner is more and more prone to frequency conversion, and the application of the frequency converter is more and more. In recent years, the energy problem is frequently raised, and although the frequency converter is used for providing the energy utilization rate, the regional power failure is still the current situation of the high and low price of the electric charge.
At present, the photovoltaic power generation of large-scale building configuration is more and more, and on the premise of frequency conversion of a central air conditioner, the frequency conversion air conditioner is in butt joint with a photovoltaic power grid, so that the frequency converter is required to have a certain energy storage function, and the frequency conversion air conditioner is used for supporting a power supply in the power grid power frequency power supply switching photovoltaic power supply process, so that a unit is kept to be stopped.
The existing energy storage frequency converter system is shown in fig. 1, and comprises the following parts:
the device comprises a commercial power grid, a photovoltaic grid, a breaker QF1, an input reactor, a frequency converter arrangement bypass contactor, a starting resistor, a capacitor, an inverter and a motor;
the existing scheme has the following problems:
according to the scheme, when the commercial power grid is powered off, a unit can be stopped in the photovoltaic grid switching process;
according to the scheme, when the photovoltaic energy storage is not available due to insufficient illumination, the unit can only be stopped under the condition that the power grid is in power failure, and the energy storage cannot be used.
Disclosure of Invention
Aiming at the problems that the existing energy storage frequency converter is excessively small in switching and shut down, bad in weather and incapable of being used, the utility model provides a double-charging energy storage frequency conversion driving system for a central air conditioner, which can be powered by an external battery or by a photovoltaic power supply, can continuously run under the emergency power failure condition, and improves the use reliability of users; the low-voltage charging is provided in the charging process, so that the charging device is safer and more reliable, and the investment of users can be saved.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a central air conditioner is with two energy storage variable frequency driving system that charges which characterized in that includes:
the rectification component comprises an RBR/S/T thyristor and a thyristor-driven IR/S/T driving plate, wherein the RBR/S/T thyristor is connected with the thyristor-driven IR/S/T driving plate in a three-phase half-control rectification mode and is used for converting input mains alternating voltage into direct voltage;
the public energy storage link is connected with the rectifying component in a bridging way and comprises N capacitors C1-CN connected in series; the capacitors C1-CN are used for filtering the direct-current voltage output by the rectifying component and supporting the work of the rear-stage inverter;
and (3) an external energy storage link: the device comprises a DC/DC conversion module, a PDU power distribution module, a series rechargeable battery pack and a photovoltaic direct current power supply module, wherein the DC/DC conversion module is respectively connected with the PDU power distribution module and the photovoltaic direct current power supply management module; the PDU power distribution module is connected with the series rechargeable battery pack;
and each inversion assembly comprises three IU/V/WIGBT modules and three IU/V/WQ driving boards, and each IU/V/WIGBT module is directly connected with one IU/V/WQ driving board to form an inversion bridge.
In the technical scheme, the PDU power distribution module comprises a KM1 contactor, a semiconductor protection fuse FU1, a CT Hall sensor and a BMU battery management module; the right contact T1 of the KM1 contactor is connected to the left side of the semiconductor protection fuse FU 1; the right contact T2 of the KM1 contactor is connected to the port L2 through a CT Hall sensor, and the signal output end of the CT Hall sensor is connected to the BMU battery management module.
In the technical scheme, the positive electrode of the right side of the DC/DC conversion module of the external energy storage link is respectively connected with the output electrode of the photovoltaic direct current power supply module, and the negative electrode of the right side of the DC/DC conversion module is respectively connected with the output electrode of the photovoltaic direct current power supply module.
In the above technical scheme, the left negative pole P-of the DC/DC transformation module is connected to the negative poles of the capacitors C1-CN, the right positive pole of the DC/DC transformation module is connected to the L1 port of the PDU distribution module, and the right negative pole of the DC/DC transformation module is connected to the L2 port of the PDU distribution module.
In the above technical scheme, the series rechargeable battery pack is provided with two battery packs, the P-port of the second battery pack is connected to the p+ port of the first battery pack, the C36 port of the second battery pack is connected to the C36 port of the first battery pack, and then connected to the BMU battery management module in the PDU power distribution module.
In the above technical solution, the right L1 port of the PDU power distribution module is connected to the p+ port of the second battery pack, and the right L2 port of the PDU power distribution module is connected to the P-port of the first battery pack.
In the technical scheme, three IU/V/WC absorption capacitors are arranged in total, and each IU/V/WC absorption capacitor is connected between P and N of each corresponding IU/V/WIGBT module in a bridging mode.
In the technical scheme, the output ports OUT of the IU/V/WIGBT modules pass through the U/V/WCT Hall sensor to be connected to the motor in a wired connection mode.
In the technical scheme, two control boards are arranged, wherein the first control board is respectively connected with the thyristor drive IR/S/T drive board, the IU/V/WQ drive board and the U/V/WCT Hall sensor, and the second control board is respectively connected with the DC/DC transformation module, the photovoltaic direct current power supply management module and the BMU battery management module. The control boards use a general processing chip, such as a digital signal processing ARM32F series chip.
In the above technical solution, another semiconductor protection fuse FU2 is disposed on a lead-out wire between the rectifying component and the common energy storage ring, the positive electrode P on the left side of the DC/DC transformation module is connected to the right side of the another semiconductor protection fuse FU2, and the left side of the another semiconductor protection fuse FU2 is connected to the positive electrodes of the capacitors C1 to CN.
The capacitors C1-CN are used for filtering the direct-current voltage output by the rectifying component and supporting the operation of the inverter at the later stage.
The working principle of the utility model is as follows:
double charging working principle:
and (3) charging the commercial power: when the load of the central air conditioner is small or the central air conditioner is stopped at night, a commercial power grid is rectified to be direct current through a rectifying component in a semi-controlled way, energy storage of capacitors C1-CN stabilizes the direct current and filters ripple waves, direct current voltage reaches a DC/DC voltage transformation module through an FU2 semiconductor protection fuse and is subjected to voltage reduction treatment and then reaches a PDU power distribution module, a KM1 contactor is closed, direct current voltage +is loaded to P+ of a first battery pack of a series battery pack through the FU1 semiconductor protection fuse, direct current voltage-passes through a CT Hall sensor and then is received to a port L2 and then reaches P-of a second battery pack, battery charging is started, voltage continuously rises, the CT Hall sensor detects charging current, voltage at the output side of the DC/DC voltage transformation module is controlled in a closed loop mode, and voltage at two ends of the battery continuously rises until the battery pack is fully charged with KM1, and charging is completed;
photovoltaic charging: in the daytime, the solar cell array converts to generate electric energy, direct-current voltage reaches through a +and-port of the battery management module, the DC/DC transformation module is subjected to voltage reduction treatment and then reaches the PDU distribution module, a KM1 contactor is closed, the direct-current voltage +is loaded to P+ of a first battery pack of the series battery pack through a semiconductor protection fuse FU1, the direct-current voltage-passes through a CT Hall sensor and then reaches a port L2 and then reaches P-of a second battery pack, the battery is charged, the voltage is continuously increased, the CT Hall sensor detects charging current, the voltage at the output side of the DC/DC transformation module is controlled in a closed loop manner to control the charging current, and the voltage at two ends of the battery is continuously increased until the cut-off KM1 is full, and the charging is finished;
battery discharging principle: when the mains supply power failure time passes through the first cycle, the first control board detects power failure of the power grid, the second control board synchronously obtains signals, the BMU battery management module monitors that the voltage of the battery pack meets the working requirement (the mode of setting a conventional threshold value does not belong to the new design of the utility model), the KM1 contactor is controlled to be closed, the direct current voltage of two battery packs of the series battery pack reaches the DC/DC voltage transformation module through the semiconductor protection fuses FU1 and KM1 contactor and is boosted, and then reaches the P and P-continuous power supply of the energy storage link of the frequency converter through the semiconductor protection fuse FU2, so that the unit is continuously operated without stopping the machine.
Photovoltaic discharge working principle: when the mains supply power failure time passes through a first cycle, the first control panel detects power failure of the power grid, the second control panel synchronously obtains signals, the BMU battery management module monitors that the voltage of the battery pack does not meet the working requirement, the photovoltaic power supply signal is required to be reached, the battery management module detects that the power supply meets the working requirement to discharge, the photovoltaic battery direct-current power supply reaches the DC/DC voltage transformation module and is boosted, and then reaches the P and P-continuous power supply of the energy storage link of the frequency converter through the semiconductor protection fuse FU2, and the unit continuously operates without stopping.
Battery discharging switching photovoltaic working principle: when the mains supply power failure time passes through a first cycle, the first control board detects power failure of the power grid, the second control board synchronously obtains signals, the BMU battery management module monitors that the voltage of the battery pack meets the working requirement (the mode of setting a conventional threshold value does not belong to the new design of the utility model), the KM1 contactor is controlled to be closed, the direct-current voltage of two battery packs of the series battery pack reaches the DC/DC voltage transformation module through the semiconductor protection fuse FU1, the KM1 contactor is boosted, and then reaches the P and P-continuous power supply of the energy storage link of the frequency converter through the semiconductor protection fuse FU2, and the unit is continuously operated without stopping. The power of two batteries of the series battery pack is reduced to 10% of the total capacity, a photovoltaic power supply signal is required to be achieved, the battery management module detects that the power supply meets the working requirement to discharge, the photovoltaic battery direct current power supply reaches the DC/DC transformation module, the KM1 contactor is disconnected, the power is boosted, and then the power is continuously supplied to P and P-in the energy storage link of the frequency converter through the semiconductor protection fuse FU2, and the unit is continuously operated without stopping.
In this scheme, the semiconductor protection fuse FU1 and the semiconductor protection fuse FU2 perform a short-circuit protection function.
The utility model has the beneficial effects that:
1. the system realizes the slow rising of the voltage of the direct current bus through semi-controlled rectification, provides low-voltage charging in the charging process, and is safer and more reliable. The DC/DC conversion module can realize the voltage reduction from high voltage to low voltage and the voltage increase from low voltage to high voltage, thus preparing the early stage for realizing the charge and discharge of the battery,
2. the system is designed with an external energy storage link, so that the unit can charge a battery and manage the battery to discharge the unit through the DC/DC conversion module and the PDU power distribution and BMU battery management module, thereby realizing the battery charging and discharging function; the external battery can be used for power supply, the photovoltaic power supply can be used, continuous operation can be realized under the emergency power failure condition, and the use reliability of a user is improved. The peak clipping and valley filling can be realized by electricity, and the cost is saved.
3. The system can realize direct access of photovoltaic direct current power generation, and realize energy conservation and environmental protection of photovoltaic power supply operation.
4. The short-circuit protection function is performed on the direct current loop by using the fuse FU 1/2.
5. The design uses half accuse rectification, and when the commercial power charges for the battery, the input side voltage of DC/DC transformation module can be controlled, charges under low voltage direct current condition to DC/DC transformation module life-span better.
6. The system can utilize the battery to the greatest extent in a double-charging mode, and can run by means of battery power supply under the condition of no electricity of the photovoltaic.
7. The system of the utility model can save the investment cost of users without using a photovoltaic inverter output module.
Drawings
The utility model will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a structural diagram of the prior art.
Fig. 2 is a schematic structural diagram of an embodiment of a dual-charging energy-storage variable-frequency driving system for a central air conditioner.
FIG. 3 is a schematic diagram of an RBR/S/T thyristor of the utility model.
FIG. 4 is a diagram of IU/V/WIGBT module of the present utility model.
Fig. 5 is a schematic diagram of a PDU power distribution module of the present utility model.
Fig. 6 is a circuit connection diagram of the control board of the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
As shown in fig. 2-6, the dual-charging energy-storage variable-frequency driving system for the central air conditioner comprises the following 4 links:
rectification 100: the RBR/S/T thyristor 4 is provided with a thyristor-driven IR/S/T driving plate 3, three-phase half-control rectification is used for converting input alternating current into direct current, a half-control rectification loop controls output voltage to slowly rise during power-on, and the direct current low voltage is adjusted to charge the external energy storage link 200 during charging of a mains supply power grid;
an external energy storage link 200: through the DC/DC conversion module, the BMU battery management module 23 is built in the PDU power distribution module 9 to charge the series battery pack and manage the battery to discharge the battery pack;
public energy storage link: when the C1-N capacitors 5 are electrified, the half-control rectification is performed first, then the C capacitors are reached, the bus voltage slowly rises, and the capacitors filter direct current and support the work of the inverter at the later stage;
inversion 300: the IU/V/WIGBT module 13 configures the IU/V/WQ driving board 12 to form an inversion network, and under the control of the first control board 16, outputs direct current into alternating current with adjustable frequency, outputs the alternating current to the U, V, W terminal, and then outputs the alternating current to the PM01 motor from the U/V/W terminal;
other devices are not included in the system for illustrating the scheme: such as the utility power grid 25, the light Fu Zhiliu power supply 26.
The right end of the QF1 breaker 1 is connected to the 1 port of the RBR/S/T thyristor 4 by using a copper bar 18 as shown in fig. 2 and 3;
the left end of the QF1 breaker 1 is connected to a 25 mains power grid by using a copper bar 18 as shown in figure 2;
the output port 2 of the RBR/S/T thyristor 4 is connected to the anode of the C1-N capacitor 5 through a copper bar 18; as in fig. 2, as in fig. 3;
the output port 1 of the RBR/S/T thyristor 4 is connected to the negative electrode of the C1-N capacitor 5 through a copper bar 18; as in fig. 2, as in fig. 3;
the thyristor-driven IR/S/T drive board 3 is connected to the K1/G1 port of the RBR/S/T thyristor 4 via control line 19, as shown in FIG. 2;
the anodes of the C1-N capacitors 5 are connected to the input terminal P of the IU/V/WIGBT module 13 through copper bars 18, as shown in FIG. 4; as in figure 2
The cathodes of the C1-N capacitors 5 are connected to an input terminal N of the IU/V/WIGBT module 13 through a copper bar 18; fig. 4 shows; as in fig. 2;
the IU/V/WQ driving board 12 is directly connected with the IU/V/WIGBT module 13, and the IGBT driving board bonding pad is soldered with the IGBT contact; as in fig. 2;
IU/V/WC absorption capacitor 15 is connected across P and N of IU/V/WIGBT module 13; as in fig. 2;
the first control board 16 is connected with the thyristor drive IR/S/T drive board 3, the IU/V/WQ drive board 12, the U/V/WCT Hall sensor 14 and the second control board 17 through control lines 19 respectively as shown in figures 2 and 6;
the second control board 17 is connected to the DC/ DC transformation modules 8, 26, the photovoltaic direct current power supply battery management module, the BMU battery management module 23, respectively, through control lines 19 as shown in fig. 2 and 6.
The control boards use a general processing chip, such as a digital signal processing ARM32F series chip.
As shown in fig. 6, the digital processing chip ARM32F pin BOOT0 of the first control board 16 is connected to the digital processing chip ARM32F pin BOOT0 of the second control board 17; the digital processing chip ARM32F pin BOOT1 of the first control board 16 is connected with the digital processing chip ARM32F pin BOOT1 of the second control board 17; the digital processing chip ARM32F pin PA0 of the first control board 16 is connected with the CT hall sensor UCT; the digital processing chip ARM32F pin PA1 of the first control board 16 is connected with the CT Hall sensor VCT; the digital processing chip ARM32F pin PA2 of the first control board 16 is connected with the CT hall sensor WCT; the digital processing chip ARM32F pin PE8 of the first control board 16 is connected with the driving board IUQ; the digital processing chip ARM32F pin PE10 of the first control board 16 is connected with the driving board IVQ; the digital processing chip ARM32F pin PE12 of the first control board 16 is connected with the driving board IWQ; the digital processing chip ARM32F pin PE9/11/13 of the first control board 16 is connected with a thyristor drive board;
the digital processing chip ARM32F pin PE11 of the second control board 17 is connected with a DC/DC transformation module; the digital processing chip ARM32F pin PA10 of the second control board 17 is connected with the digital processing chip ARM32F pin PD9 of the BMU;
the digital processing chip ARM32F pin PB5 of the BMU battery management module 23 is connected with the KM1 contactor coil; the digital processing chip ARM32F pin PA0 of the BMU battery management module 23 is connected with a CT transformer; the BMU battery management module 23 digital processing chip ARM32F pin PA9 is connected with the C36 ports of PACK1 and PACK 2.
The output port OUT of the IU/V/WIGBT module 13 is connected to the PM01 motor 7 through the U/V/WCT Hall sensor 14 by a copper bar 18, as shown in figure 2;
the left positive pole P of the DC/DC transformation module 8 is connected to the right side of the FU2 semiconductor protection fuse 24 as shown in fig. 2;
the left side of the FU2 semiconductor protection fuse 24 is connected to the positive electrode of the C1-N capacitor 5 as shown in fig. 2;
the left negative electrode P-of the DC/DC transformation module 8 is connected to the negative electrodes of the C1-N capacitors 5, as shown in FIG. 2;
the right positive electrode of the DC/DC transformation module 8 is connected to the 1L1 port of the PDU distribution module 9, as shown in FIG. 2;
the right negative pole of the DC/DC transformation module 8-is connected to the 3L2 port of the PDU distribution module 9, as in fig. 2;
the right side L1 port of the PDU power distribution module 9 is connected to the p+ port of the PACK2 battery (second battery PACK) 11 as shown in fig. 2;
the right side L2 port of the PDU power distribution module 9 is connected to the P-port of the PACK1 battery (first battery PACK) 10 as shown in fig. 2;
the P-port of ACK2 battery 11 is connected to the p+ port of PACK1 battery 10 as in fig. 2;
the C36 port of the ACK2 battery 11 is connected to the C36 port of the PACK1 battery 10, and then connected to the BMU battery management module 23 in the PDU distribution module 9 as in FIG. 2;
the internal structure of the PDU distribution module 9 is shown in fig. 5, wherein:
the right contact 2T1 of KM1 contactor 20 is connected to the left side of FU1 semiconductor protection fuse 22;
the right contact 4T2 of the KM1 contactor 20 is connected to the port L2 through the CT hall sensor 21;
the signal output end of the CT Hall sensor 21 is connected to the BMU battery management module 23;
the output plus electrode of the light Fu Zhiliu power supply 26 is connected to the right positive electrode plus electrode of the DC/DC transformation module 8, as shown in fig. 2;
the output-pole of the photovoltaic direct current supply 26 is connected to the right negative pole-of the DC/DC transformation module 8, as in fig. 2.
The non-illustrated portions referred to in the present utility model are the same as or implemented using the prior art.
To sum up: the utility model has the following key technical points:
1. the system designs an external energy storage link (200): the DC/DC conversion module is matched with the PDU power distribution and BMU battery management module to charge the battery and manage the battery to discharge the unit so as to realize the battery charging and discharging function;
2. the system designs the DC/DC conversion module to realize the voltage reduction from high voltage to low voltage, and can also realize the voltage increase from low voltage to high voltage, so as to prepare for realizing the charge and discharge of the battery in the early stage;
3. the system designs the BMU battery management module in the PDU power distribution unit, so that the management of battery charge and discharge can be realized;
4. the system is designed to use the fuse FU1/2 to perform a short-circuit protection function on a direct current loop;
5. the system is designed to use half-control rectification, when the commercial power charges the battery, the voltage of the input side of the DC/DC transformation module can be controlled, and the service life of the DC/DC transformation module is longer when the DC/DC transformation module is charged under the condition of low voltage.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (10)
1. The utility model provides a central air conditioner is with two energy storage variable frequency driving system that charges which characterized in that includes:
the rectification component comprises an RBR/S/T thyristor and a thyristor-driven IR/S/T driving plate, wherein the RBR/S/T thyristor is connected with the thyristor-driven IR/S/T driving plate in a three-phase half-control rectification mode and is used for converting input mains alternating voltage into direct voltage;
the public energy storage link is connected with the rectifying component in a bridging way and comprises N capacitors C1-CN connected in series;
and (3) an external energy storage link: the device comprises a DC/DC conversion module, a PDU power distribution module, a series rechargeable battery pack and a photovoltaic direct current power supply module, wherein the DC/DC conversion module is respectively connected with the PDU power distribution module and the photovoltaic direct current power supply management module; the PDU power distribution module is connected with the series rechargeable battery pack;
and each inversion assembly comprises three IU/V/WIGBT modules and three IU/V/WQ driving boards, and each IU/V/WIGBT module is directly connected with one IU/V/WQ driving board to form an inversion bridge.
2. The double-charging energy-storage variable-frequency driving system for the central air conditioner according to claim 1, wherein the PDU power distribution module comprises a KM1 contactor, a semiconductor protection fuse FU1, a CT Hall sensor and a BMU battery management module; the right contact T1 of the KM1 contactor is connected to the left side of the semiconductor protection fuse FU 1; the right contact T2 of the KM1 contactor is connected to the port L2 through a CT Hall sensor, and the signal output end of the CT Hall sensor is connected to the BMU battery management module.
3. The double-charging energy-storage variable-frequency driving system for the central air conditioner according to claim 1, wherein the right positive electrode of the DC/DC conversion module of the outer energy storage link is respectively connected with the output positive electrode of the photovoltaic direct-current power supply module, and the right negative electrode of the DC/DC conversion module is respectively connected with the output positive electrode of the photovoltaic direct-current power supply module.
4. The dual-charging energy-storage variable-frequency driving system for a central air conditioner according to claim 1, wherein a left negative pole P-of the DC/DC transformation module is connected to negative poles of the capacitors C1 to CN, a right positive pole of the DC/DC transformation module is + connected to an L1 port of the PDU distribution module, and a right negative pole of the DC/DC transformation module is-connected to an L2 port of the PDU distribution module.
5. The dual charge energy storage variable frequency drive system for a central air conditioner of claim 1, wherein the series charged battery pack is provided with two battery packs, the P-port of the second battery pack is connected to the p+ port of the first battery pack, the C36 port of the second battery pack is connected to the C36 port of the first battery pack, and then connected to the BMU battery management module in the PDU power distribution module.
6. The dual charge energy storage variable frequency drive system for a central air conditioner of claim 1, wherein a right side L1 port of the PDU power distribution module is connected to a p+ port of the second battery pack, and a right side L2 port of the PDU power distribution module is connected to a P-port of the first battery pack.
7. The dual charge energy storage variable frequency drive system for a central air conditioner of claim 1, wherein three IU/V/WC absorption capacitors are provided in total, each IU/V/WC absorption capacitor being connected across P and N of each corresponding IU/V/WIGBT module.
8. The dual-charging energy-storage variable-frequency driving system for a central air conditioner according to claim 2, wherein the output port OUT of each IU/V/WIGBT module is connected to the motor through a U/V/WCT Hall sensor in a wired connection mode.
9. The dual-charging energy-storage variable-frequency driving system for the central air conditioner according to claim 2, wherein two control boards are arranged, the first control board is respectively connected with a thyristor-driven IR/S/T driving board, an IU/V/WQ driving board and a U/V/WCT Hall sensor, and the second control board is respectively connected with a DC/DC transformation module, a photovoltaic direct-current power supply management module and a BMU battery management module.
10. The double-charging energy-storage variable-frequency driving system for a central air conditioner according to claim 1, wherein another semiconductor protection fuse FU2 is arranged on a lead-out wire between the rectifying component and the common energy-storage ring node, the left positive electrode P of the DC/DC transformation module is connected to the right side of the another semiconductor protection fuse FU2, and the left side of the another semiconductor protection fuse FU2 is connected to the positive electrodes of the capacitors C1 to CN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223424581.0U CN219067922U (en) | 2022-12-15 | 2022-12-15 | Double-charging energy storage variable frequency driving system for central air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223424581.0U CN219067922U (en) | 2022-12-15 | 2022-12-15 | Double-charging energy storage variable frequency driving system for central air conditioner |
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| CN219067922U true CN219067922U (en) | 2023-05-23 |
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