CN218940686U - Photoelectric complementary motor driving device with energy feedback and energy storage functions - Google Patents
Photoelectric complementary motor driving device with energy feedback and energy storage functions Download PDFInfo
- Publication number
- CN218940686U CN218940686U CN202222709667.1U CN202222709667U CN218940686U CN 218940686 U CN218940686 U CN 218940686U CN 202222709667 U CN202222709667 U CN 202222709667U CN 218940686 U CN218940686 U CN 218940686U
- Authority
- CN
- China
- Prior art keywords
- energy
- power
- direct current
- power supply
- solar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Control Of Electrical Variables (AREA)
Abstract
The utility model provides a band energy feedback device an energy-storage photoelectric complementary motor driving device, the motor driving device comprises a solar power supply unit, a power grid power supply unit and a direct current bus output; the power generation input of the solar panel is boosted by the booster circuit and then connected with the two ends of the output of the direct current bus on the one hand and the energy storage module on the other hand; the alternating current input is connected with the energy feedback module and then connected with the direct current bus output, and the direct current bus output supplies power for the driving motor; the boost circuit is controlled by the MPPT module, the voltage boosted by the booster circuit is controlled to be always higher than the voltage output by the direct current bus. The energy storage module is used for storing redundant electric energy in the circuit; the energy feedback module is used for feeding back redundant electric energy in the circuit to the power grid power supply unit for power generation. The utility model can more effectively utilize solar energy, improve the energy utilization rate, improve the working efficiency of the whole machine and prevent the risk of damage to the capacitor device caused by overhigh bus voltage.
Description
Technical Field
The utility model relates to the technical field of motor driving, in particular to a photoelectric complementary motor driving device with energy feedback and energy storage.
Background
Photovoltaic water pump drives, which are a good example of efficient use of solar energy in recent years, are based on the addition of solar panels. The existing photovoltaic water pump has the following defects:
(1) The photoelectric switching mode is adopted, namely, when the solar energy generating capacity is large, the whole power supply is switched to the solar energy power supply, and when the solar energy generating capacity is insufficient, the whole power supply is switched to the power grid power supply. The existing scheme is shown in fig. 1, wherein Q2 realizes the switching function of the input power, the working mode of the switching function can only be one of solar energy and mains supply input, the requirement of the solar energy input range is DC 150V-DC 400V, the direct cutting-off mode is adopted for the solar energy input lower than 150V, the solar energy under the condition of low voltage is difficult to be effectively utilized, in other words, the photoelectric switching function can only utilize the solar energy in the period of strong sunlight illumination, the solar energy in the period of insufficient illumination is not used, and the solar energy cannot be utilized to the maximum extent. At the same time, the circuit has more switching elements Q2, and the cost and reliability are correspondingly reduced.
(2) When load braking conditions or other energy returns to the bus at the output side of the direct current bus, the conventional method is to connect a braking resistor in parallel on the bus to consume energy, so that the risk of failure of the braking resistor exists, and the working efficiency of the whole machine can be reduced; and there is the risk that the failure of the braking resistor can lead to the release of energy from nothing and the over-high voltage of the bus bar, and the damage of the capacitor element.
(3) When the energy at the solar energy input side is excessive and the load side cannot consume the excessive energy, the conventional method is to reduce the solar power generation power, so that the battery plate works in a non-MPPT state, the excessive solar energy is wasted, and the risk that the bus voltage is too high exists due to instantaneous no-place release of the high energy.
Therefore, it is needed to develop a photoelectric complementary motor driving device with energy feedback and energy storage to solve the above problems.
The present case results therefrom.
Disclosure of Invention
In order to overcome the defects in the background art, the utility model aims to provide the photoelectric complementary motor driving device with energy feedback and energy storage, which can more effectively utilize solar energy, improve the energy utilization rate, improve the working efficiency of the whole machine and prevent the risk of damage to a capacitor device caused by overhigh bus voltage.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a photoelectric complementary motor driving device with energy feedback and energy storage comprises a solar power supply unit, a power grid power supply unit and a direct current bus output; the solar power supply unit comprises a solar panel power generation input, a booster circuit and an energy storage module; the power grid power supply unit comprises an alternating current input and energy feedback module; the power generation input of the solar panel is boosted by the booster circuit and then connected with the two ends of the output of the direct current bus on the one hand and the energy storage module on the other hand; the alternating current input is connected with the energy feedback module and then connected with the direct current bus output, and the direct current bus output is used as the input of the motor drive at the load side to supply power for the drive motor; the voltage boosting circuit is controlled by the MPPT module, and the voltage boosted by the voltage boosting circuit is controlled to be always higher than the voltage output by the direct current bus;
the solar power supply unit outputs electric energy to the direct current bus in one direction, and the power grid power supply unit and the energy storage module are both in bidirectional electric energy flow;
the energy storage module is used for storing redundant electric energy in the circuit;
and the energy feedback module is used for feeding back redundant electric energy in the circuit to the power grid power supply unit for generating electricity.
As a preferable scheme of the utility model, the energy feedback module controls the bidirectional input/output of alternating current and a direct current bus, and controls the input of the alternating current and the output of the direct current bus to supply power for motor drive when the power supply of the motor drive is insufficient; when the motor is driven to supply power in excess or other electric energy returns to the direct current bus, the direct current bus is controlled to output reversely, and the electric energy is fed back to the alternating current to generate electricity.
As a preferable scheme of the utility model, the energy feedback module comprises a rectifying circuit and an inverter, when the motor drive is insufficient in power supply, the input of alternating current is controlled, the alternating current is converted into direct current after being rectified by the rectifying circuit, and the direct current is output by a direct current bus to supply power for the motor drive; when the motor is driven to supply power in excess or other electric energy returns to the direct current bus, the direct current bus is controlled to output reversely, the direct current bus is converted into alternating current after being inverted by the inverter, and the electric energy is fed back to the alternating current to generate power.
As a preferable scheme of the utility model, the energy feedback module and the energy storage module are used for allocating unbalanced energy supply and demand of solar power supply, power grid power supply and load power consumption, and the energy feedback module comprises the following components:
the solar power supply is power-consuming for load, generating surplus power, and charging the energy storage module when the energy storage module is not full;
the solar power supply is used for power consumption of a load, surplus power generation is achieved, the energy storage module is full, the energy feedback module is operated, and surplus electric quantity is fed back to the power grid;
the solar power supply is less than load power consumption, power generation is insufficient, the energy storage module is not empty, the energy storage module is discharged, and the load is supplied with power through the energy storage module;
the solar power supply is low in load power consumption and insufficient in power generation, the energy storage module is empty, and the power grid is powered through the energy feedback module.
As a preferable scheme of the utility model, the solar power supply unit further comprises a direct current grid-connected unit, and the direct current grid-connected unit is used for selecting to be completely powered by the solar power supply unit, complementarily powered by the solar power supply unit and the power grid power supply unit, completely powered by the energy storage module, stopping power supply, performing energy feedback or stopping power supply to store energy according to the output power of the solar panel and the actual power of the motor.
As a preferable scheme of the utility model, the direct current grid-connected unit adopts an MPPT maximum power point tracking control module and a complementary maximum current control module.
As a preferred embodiment of the present utility model, the ac power input is a single-phase or three-phase ac power input.
As a preferable scheme of the utility model, the motor is a motor of a water pump, a swimming pool circulating pump, a fan, an oxygenation pump, an air conditioner compressor or a refrigerator compressor.
Compared with the prior art, the technical scheme has the following advantages:
(1) The utility model improves the topology part of the main loop of the outdoor photovoltaic water pump driver, changes the original photoelectric switching into the photoelectric complementary mode, namely, solar energy is normally connected with a power grid, and the insufficient solar energy is supplied by the power grid, so that the outdoor photovoltaic water pump can more effectively utilize the solar energy, and the energy utilization rate is improved.
(2) According to the utility model, the photovoltaic complementary circuit and the booster circuit are combined with the MPPT technology, so that solar energy is utilized to the greatest extent, and electric energy of a power grid can be effectively saved in areas with relatively deficient electric energy such as deserts, deserts and the like.
(3) According to the utility model, the energy feedback module and the energy storage module are added, so that the redundant energy is supported to be fed back to the power grid side for power generation, or the redundant energy is stored through the energy storage module, so that the energy of the load side is fully utilized, the working efficiency of the whole machine is improved, and the risk of damage to the capacitor device caused by overhigh bus voltage can be prevented.
(4) According to the utility model, the energy feedback module and the energy storage module are added, so that the battery plate can work in the MPPT state continuously when the energy is excessive, and the redundant energy is fed back to the power grid side for power generation, or is stored through the energy storage module, so that the energy of the load side is fully utilized, the working efficiency of the whole machine is improved, and the risk of damage to the capacitor device caused by overhigh bus voltage can be prevented.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a circuit diagram of a prior art scheme of a photoelectric switching motor driving device;
FIG. 2 is a circuit diagram of the electro-optical complementary motor driving device with energy feedback and energy storage according to the embodiments 1 and 2;
FIG. 3 is a circuit diagram of a photoelectric complementary motor driving device with energy feedback and energy storage according to embodiment 2;
fig. 4 is a schematic diagram of rectification and inversion switching in the energy feedback module of embodiment 1.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Referring to fig. 2, the photovoltaic complementary motor driving device with energy feedback and energy storage of the present embodiment includes a solar power supply unit, a power grid power supply unit and a dc bus output; the solar power supply unit comprises a solar panel power generation input, a booster circuit and an energy storage module; the power grid power supply unit comprises an alternating current input and energy feedback module; the power generation input of the solar panel is boosted by the booster circuit and then connected with the two ends of the output of the direct current bus on the one hand and the energy storage module on the other hand; the alternating current input is connected with the energy feedback module and then connected with the direct current bus output, and the direct current bus output is used as the input of the motor drive at the load side to supply power for the drive motor; the booster circuit is controlled by the MPPT module, and the voltage boosted by the booster circuit is controlled to be always higher than the voltage output by the direct current bus; the solar power supply unit outputs electric energy to the direct current bus in one direction, and the power grid power supply unit and the energy storage module are both in bidirectional electric energy flow; the energy storage module is used for storing redundant electric energy in the circuit; the energy feedback module is used for feeding back redundant electric energy in the circuit to the power grid power supply unit for power generation; controlling the bidirectional input/output of alternating current and a direct current bus, and controlling the input of the alternating current and the output of the direct current bus to supply power for motor driving when the power supply of the motor driving is insufficient; when the motor is driven to supply power in excess or other electric energy returns to the direct current bus, the direct current bus is controlled to output reversely, and the electric energy is fed back to the alternating current to generate electricity.
In this embodiment, the energy feedback module includes a rectifying circuit and an inverter, as shown in fig. 4, when the power supply of the motor is insufficient (when the power supply of the direct current is insufficient), the input of the alternating current is controlled, the alternating current is rectified by the rectifying circuit and then converted into the direct current (the rectifying mode is started), and the direct current is output by the direct current bus to supply power to the motor; when the motor is driven to supply power in excess or other electric energy returns to the direct current bus, the direct current bus is controlled to reversely output, the direct current bus is inverted by the inverter and then converted into alternating current (an inversion mode is started), and the electric energy is fed back to the alternating current to generate power.
First with respect to photoelectric complementation: the solar power supply unit comprises a solar panel power generation input, a booster circuit, an electrolytic capacitor C1 and an electrolytic capacitor C2; the booster circuit comprises an MPPT module, a power inductor L1, a power diode D1 and an I GBT Q1; the positive electrode of the electrolytic capacitor C1 and the positive electrode of the electrolytic capacitor C2 are connected with PV+ of the power generation input of the solar panel, and the negative electrode is connected with PV of the power generation input of the solar panel; one end of the power inductor L1 is connected with PV+, and the other end is connected with a collector electrode of the Q1; the grid electrode of the Q1 is controlled by an MPPT module, and the emitter electrode of the Q1 is connected with PV-; the positive electrode of the power diode D1 is connected with the collector electrode of the Q1, and the negative electrode is connected with P+ output by the direct current bus; PV-P-connected with the output of the DC bus.
The power grid power supply unit comprises alternating current input, an energy feedback module, a relay K1, a resistor R1, an electrolytic capacitor C3 and an electrolytic capacitor C4 which are connected in parallel; after the alternating current input is rectified by a rectifying circuit in the energy feedback module, the positive electrode is connected with one end of a relay K1 and one end of an R1 resistor, and the negative electrode is connected with P-; the normally open contact of the relay K1 is connected with the other end of the R1 resistor and P+, and the positive poles of the electrolytic capacitor C3 and the electrolytic capacitor C4 are connected with P+, and the negative poles are connected with P-.
In other words, in this embodiment, the power input is divided into two parts, namely, the solar panel input and the single-phase ac220V input, the solar panel input part boosts the input power through the MPPT algorithm, and at the same time, ensures that the output voltage level is higher than the dc voltage output by the ac input through the energy feedback module.
The 220V single-phase alternating current input is a direct current bus output P+ and P-after passing through an energy feedback module, the solar cell panel generates power and inputs PV+ and PV-after being boosted by a booster circuit, and the power is supplied to a driving motor by connecting the two ends of the direct current bus output P+ and P-as motor driving input; the booster circuit is controlled by the MPPT module, and the voltage boosted by the booster circuit is controlled to be always higher than the voltage output by the direct current bus.
The photoelectric complementary working principle of the embodiment is as follows: when the rectifying circuit in the energy feedback module is electrified to work, the K1 is not closed, the rectifying power supply charges the electrolytic capacitors (C3 and C4) through the R1, the relay K1 is closed after the delay of 1S after the electrification, the circuit is mainly used for preventing overlarge capacitor charging current during the electrification, the capacitance value and the power of the electrolytic capacitors C3 and C4 are in direct proportion, and 50uF/A is generally taken. When the solar energy power supply works normally, the voltage of the solar energy after MPPT is controlled to be higher than the rectification voltage by a certain value (about 10V), so that under the condition that the solar energy is enough, the alternating current partial diode is cut off, and only under the condition that the solar energy is insufficient, the alternating current can be used as supplement.
Secondly, regarding the energy feedback module and energy storage, the situation of unbalanced energy supply and demand existing in the three of solar power supply, power grid power supply and load power consumption is allocated, and the method comprises the following steps:
(1) The solar power supply is power-consuming for load, generating surplus power, and charging the energy storage module when the energy storage module is not full;
(2) The solar power supply is used for power consumption of a load, surplus power generation is achieved, the energy storage module is full, the energy feedback module is operated, and surplus electric quantity is fed back to the power grid;
(3) The solar power supply is less than load power consumption, power generation is insufficient, the energy storage module is not empty, the energy storage module is discharged, and the load is supplied with power through the energy storage module;
(4) The solar power supply is low in load power consumption and insufficient in power generation, the energy storage module is empty, and the power grid is powered through the energy feedback module.
The beneficial technical effects of this embodiment are:
(1) The AC220V power supply input circuit adopts a direct rectification mode output mode, does not need to be switched, and the voltage of the solar power generation power supply PV +/-is always raised to 10V above the bus voltage by a booster circuit controlled by an MPPT algorithm, so that the power supply of a rear-stage water pump (the motor adopting a motor can be a water pump, a swimming pool circulating pump, a fan, an oxygenation pump and the like) is preferentially selected for solar power supply, and the solar energy and the alternating current power supply adopt a mode of simultaneous connection, so that when the solar energy is insufficient, the energy of the motor can be complemented by the alternating current power supply.
(2) According to the embodiment, the energy feedback module and the energy storage module are added, on one hand, the redundant energy is supported to be fed back to the power grid side for power generation, or the redundant energy is stored through the energy storage module, so that the energy of the load side is fully utilized, the working efficiency of the whole machine is improved, and the risk of damage to a capacitor device caused by overhigh bus voltage can be prevented. On the other hand, the battery plate is supported to work in the MPPT state continuously when the energy is excessive, and the redundant energy is fed back to the power grid side to generate power, or stored through the energy storage module, so that the energy on the load side is fully utilized, the working efficiency of the whole machine is improved, and the risk of damage to a capacitor device caused by overhigh bus voltage can be prevented.
Example 2
Considering that most of the current market is AC grid connection, namely solar power generation is changed into AC power, and then the AC power is combined into commercial power for use. However, this is not very applicable to motor drive systems, and because motor control is inherently an ac-dc-ac process, i.e. rectification + inversion, ac grid-connection is wasteful in the motor drive system: 1) The motor needs direct current originally, and the direct current generated by solar energy does not need to be converted into alternating current again. 2) Alternating current is converted to provide a motor, and the efficiency of the converted direct current is reduced by at least 5 percent.
Some technologies of direct current generated by solar energy directly are available in the prior art, but the technologies are rough, and the output voltage of the technologies is close to the power requirement of a motor by configuring solar panels, such as 300V (serial-parallel connection of solar panels); or boost the voltage by a boost DC-DC technique. However, these techniques can only use one type of energy at a time, cannot use utility power when using solar energy, the solar power generation power is insufficient, and the motor is used for reducing the power, such as the speed reduction of a fan water pump; when the solar power generation power is reduced to a certain value, and directly switching the commercial power. It should be clear that the switching point of the two energy sources is high, and in general, a fan and a water pump with 300V will switch when the output voltage of the solar panel is lower than 200V. With the existing boosting technology, the boosting output can be finished between 50V and 200V, and 200V switching means that the equipment can only utilize the solar energy when the power generation power is 60% -100%, and the solar energy when the power generation power is 20% -60% is not utilized, which is a huge waste and a huge limitation on the application of the equipment.
Referring to fig. 3, for this reason, the embodiment provides a photovoltaic complementary motor driving device with energy feedback and energy storage, which includes the scheme of embodiment 1, and the solar power supply unit further includes a dc grid-connected unit, where the dc grid-connected unit selects to be completely powered by the solar power supply unit, the solar power supply unit and the power grid power supply unit complement each other, the power grid power supply unit completely powers, the energy storage module completely powers, stops powering, and stops powering to perform energy feedback and stores energy according to the output power of the solar panel and the actual power consumption of the motor.
In the embodiment, the direct current grid-connected unit adopts an MPPT maximum power point tracking control module and a complementary maximum current control module; when the power of the solar cell panel is insufficient, the maximum working point cannot be found, the MPPT maximum power point tracking control module does not work, and the complementary maximum current control module is started at the moment.
The upper power limit is set according to the actual use power of the rear-end motor, the maximum output power of the solar panel and the rated power of the rear-end motor are configured according to the ratio of 1:1, the actual use power of the motor is 80%, the upper power limit is set to 80%, and the lower power limit is set to 20%.
When the output power of the solar panel exceeds the set upper power limit (80%), the direct current grid-connected unit works in a voltage mode, the motor completely uses solar energy, the MPPT maximum power point tracking control module is started by collecting the voltage and the current of the panel, the closed-loop maximum power point tracking control is realized by adopting a disturbance observation method, the output voltage of the direct current grid-connected unit is always maintained higher than the rectification voltage of the power grid power supply unit, the rectification diode of the rectification circuit of the power grid power supply unit is reversely cut off to realize clamping, the power of the power grid power supply unit cannot be accessed, and the specific working principle is as follows:
(1) When the output power of the solar cell panel exceeds the lower limit (20%) but does not exceed the upper limit (80%) of the set power, the direct current grid-connected unit works in a current mode, the solar cell panel works in a current source area, and the complementary maximum current control module is started to enable the current grid-connected unit to continuously output according to illumination conditions and to compete and complement with the rectification voltage output by the commercial power grid power supply unit: when the output voltage of the solar cell panel is lower than the rectified voltage output by the power grid power supply unit, the clamping effect of the rectifying diode in the rectifying circuit of the power supply unit is eliminated, and the power of the power grid power supply unit is connected.
The control principle of the complementary maximum current control module is as follows: after the photovoltaic cell panel receives current illumination, if the output voltage of the MPPT maximum power point tracking mode cannot be higher than the bus voltage after the current power grid rectification, the photovoltaic cell panel cannot output power at this time, and the photovoltaic cell panel needs to be automatically switched into a complementary maximum current control mode. In the complementary maximum current control mode, the panel will not operate at the maximum power point, but will target maximum current output, and the output voltage is not controlled, but must be higher than the grid rectified bus voltage. The battery plate and the grid supply energy to the load at the same time, which is called complementary type maximum current control because the maximum current is used as a control object. The specific control principle is as follows: firstly, judging through illumination conditions, and switching to complementary maximum current control; the maximum current imax is given by the power closed loop; then the output duty ratio of the water emulsion current loop controls DC/DC; and finally, the complementary output power of the commercial power is cooperated.
(2) When the output voltage of the solar panel is higher than the rectified voltage output by the power grid power supply unit, the rectifier diode in the rectifying circuit of the power supply unit is reversely cut off and clamped, and the power of the solar panel is connected.
(3) When the output power of the solar panel does not exceed the set lower power limit (20%), the direct current grid-connected unit stops working, and the load power of the rear end for the motor is completely supplied by the power grid power supply unit.
In the embodiment, the solar panel is alternately supplemented with the commercial power in the current power generation state, so that the solar panel supplies energy to equipment with high efficiency, and the actual power requirement of a load is always met. When the solar output power is less than 20%, the solar direct-current grid-connected unit stops working, and the load power is completely supplemented by the mains supply.
The embodiment can realize the following technical effects:
(1) The embodiment has the greatest advantage that solar energy can be utilized to the greatest extent. Compared with other equipment (solar energy is utilized when the power is 60-100%, the equipment reduces the power output when the solar energy is insufficient), the embodiment can fully utilize the solar energy when the power is 20-100%, and the equipment does not need to reduce the power. The solar panel has the advantages that the solar panel is greatly influenced by illumination intensity, the time period when the generated power of the solar panel is more than 60% is short, and the power utilization range is increased, so that more time periods can be used for utilizing solar energy, and the photovoltaic energy utilization is sharply increased.
(2) The existing equipment needs to be switched, namely the output voltage is monitored by software, when the output voltage is insufficient, the input energy is switched from solar energy to mains supply, the switching process is complex, and waste is inevitably generated. In the embodiment, direct current grid connection is adopted, and the direct current grid connection can be directly realized through an MPPT technology, so that additional switching hardware investment is not needed, the system is simpler, the applicability is stronger, and the efficiency is higher.
The above description is made in detail of a photoelectric switching type motor driving device provided by the present utility model. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.
Claims (6)
1. A photoelectric complementary motor driving device with energy feedback and energy storage comprises a solar power supply unit, a power grid power supply unit and a direct current bus output; the method is characterized in that: the solar power supply unit comprises a solar panel power generation input, a booster circuit and an energy storage module; the power grid power supply unit comprises an alternating current input and energy feedback module; the power generation input of the solar panel is boosted by the booster circuit and then connected with the two ends of the output of the direct current bus on the one hand and the energy storage module on the other hand; the alternating current input is connected with the energy feedback module and then connected with the direct current bus output, and the direct current bus output is used as the input of the motor drive at the load side to supply power for the drive motor; the voltage boosting circuit is controlled by the MPPT module, and the voltage boosted by the voltage boosting circuit is controlled to be always higher than the voltage output by the direct current bus;
the solar power supply unit outputs electric energy to the direct current bus in one direction, and the power grid power supply unit and the energy storage module are both in bidirectional electric energy flow;
the energy storage module is used for storing redundant electric energy in the circuit;
and the energy feedback module is used for feeding back redundant electric energy in the circuit to the power grid power supply unit for generating electricity.
2. The electro-optical complementary motor driving device with energy feedback and storage according to claim 1, wherein: the energy feedback module comprises a rectifying circuit and an inverter, when the motor drive is insufficient in power supply, the alternating current is controlled to be input, the alternating current is converted into direct current after being rectified by the rectifying circuit, and the direct current is output by a direct current bus to supply power for the motor drive; when the motor is driven to supply power in excess or other electric energy returns to the direct current bus, the direct current bus is controlled to output reversely, the direct current bus is converted into alternating current after being inverted by the inverter, and the electric energy is fed back to the alternating current to generate power.
3. The electro-optical complementary motor driving device with energy feedback and storage according to claim 1, wherein: the solar power supply unit further comprises a direct current grid-connected unit, and the direct current grid-connected unit is used for selecting to be completely powered by the solar power supply unit, complementary power supply of the solar power supply unit and the power grid power supply unit, complete power supply of the energy storage module, stopping power supply, performing energy feedback or stopping power supply according to the output power of the solar panel and the actual power of the motor, and storing energy.
4. A photoelectric complementary motor driving device with energy feedback and energy storage according to claim 3, characterized in that: the direct current grid-connected unit adopts an MPPT maximum power point tracking control module and a complementary maximum current control module.
5. The electro-optical complementary motor driving device with energy feedback and storage according to claim 1, wherein: the alternating current input is single-phase or three-phase alternating current input.
6. The electro-optical complementary motor driving device with energy feedback and storage according to claim 1, wherein: the motor is a motor of a water pump, a swimming pool circulating pump, a fan, an oxygenation pump, an air conditioner compressor or a refrigerator compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222709667.1U CN218940686U (en) | 2022-10-14 | 2022-10-14 | Photoelectric complementary motor driving device with energy feedback and energy storage functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222709667.1U CN218940686U (en) | 2022-10-14 | 2022-10-14 | Photoelectric complementary motor driving device with energy feedback and energy storage functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218940686U true CN218940686U (en) | 2023-04-28 |
Family
ID=86061404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222709667.1U Active CN218940686U (en) | 2022-10-14 | 2022-10-14 | Photoelectric complementary motor driving device with energy feedback and energy storage functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218940686U (en) |
-
2022
- 2022-10-14 CN CN202222709667.1U patent/CN218940686U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102185533B (en) | Stored energy type standard-Z source photovoltaic power generation control system and method | |
| TWI387176B (en) | Intelligent hybrid power conversion control system | |
| CN103178549B (en) | A kind of method of controlling the auxiliary grid-connected system generating of photovoltaic | |
| CN108808822A (en) | A kind of photovoltaic commercial power compensation device and control method for water pump system | |
| CN214674378U (en) | Wind-solar-energy-storage-based complementary oil production well site direct-current micro-grid system | |
| CN103501020A (en) | Hybrid power supply system consisting of mains supply network and photovoltaic assembly and control method thereof | |
| CN102291026A (en) | Solar photovoltaic grid-connected inverter and solar convertible frequency air-conditioning system | |
| CN215343930U (en) | Electric energy conversion device of intelligent photovoltaic variable frequency heat pump | |
| CN112600250A (en) | Self-adaptive photovoltaic power supply system, control method thereof and air conditioning unit | |
| CN115473435A (en) | Photovoltaic air conditioning system, control method thereof and photovoltaic air conditioner | |
| CN114156862A (en) | Optical storage direct current micro-grid technology of oil pumping unit | |
| CN207720041U (en) | From grid-connected city's power production photovoltaic battery integration inverter | |
| CN110970928A (en) | Energy storage off-grid inverter with photovoltaic and commercial power simultaneously complementarily powered and control method | |
| JP2006101581A (en) | System-interconnected inverter | |
| CN106194690A (en) | Control device, current transformer, photovoltaic water pump system and control method thereof | |
| CN101860041B (en) | Method for dynamically adjusting busbar voltage to improve grid connection efficiency | |
| CN218940686U (en) | Photoelectric complementary motor driving device with energy feedback and energy storage functions | |
| CN115622134B (en) | MPPT scheduling control method of photovoltaic power generation system | |
| CN218940685U (en) | Photoelectric complementary motor driving device | |
| CN110784011A (en) | Solar energy and commercial power hybrid power supply control air conditioner control mode | |
| CN115940230A (en) | Photovoltaic energy storage air conditioning device and centralized control method | |
| CN215580402U (en) | Application device for multi-energy complementation of heat pump and photovoltaic or wind power energy | |
| CN215071777U (en) | Wisdom street lamp | |
| CN211209310U (en) | Three-phase inverter based on inverse control integration | |
| CN2810008Y (en) | Power distribution cabinet with compounded high-frequency switch eliminator supply and solar energy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |