CN110838811A - Compressor preheating method, system, medium and equipment - Google Patents
Compressor preheating method, system, medium and equipment Download PDFInfo
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- CN110838811A CN110838811A CN201911076904.1A CN201911076904A CN110838811A CN 110838811 A CN110838811 A CN 110838811A CN 201911076904 A CN201911076904 A CN 201911076904A CN 110838811 A CN110838811 A CN 110838811A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/60—Controlling or determining the temperature of the motor or of the drive
- H02P29/62—Controlling or determining the temperature of the motor or of the drive for raising the temperature of the motor
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/0014—Devices wherein the heating current flows through particular resistances
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Abstract
The invention provides a preheating method, a preheating system, a preheating medium and preheating equipment of a compressor, wherein the preheating method of the compressor comprises the following steps: sending a preheating command to a driver through a master controller; judging whether the driver receives the preheating instruction; if so, sending a preheating signal to introduce preheating current to a two-phase motor winding of the compressor to preheat the compressor; if not, no treatment is carried out. According to the invention, the pulse signals are sent to the inverter switching devices correspondingly connected with the two-phase motor windings of the compressor, so that the preheating current is introduced into the two-phase motor windings of the compressor to preheat the compressor, and the problems of unbalanced preheating and low preheating efficiency in the prior art are solved.
Description
Technical Field
The invention belongs to the field of motor control, relates to a preheating method, and particularly relates to a preheating method, a preheating system, a preheating medium and preheating equipment for a compressor.
Background
At present, most of motors adopted by an air conditioner compressor are permanent magnet synchronous motors without position sensors, and when the permanent magnet synchronous motors without the position sensors are started in a low-temperature state, the motors are difficult to start and the winding parameters of the motors can be changed due to the fact that the viscosity of lubricating oil is increased. Because no position sensor needs motor parameters to estimate the position of the rotor, the change of the motor parameters can cause inaccurate observation of the position of the rotor, and the motor is easy to fail to start. In order to ensure that the motor can be started normally, the compressor needs to be preheated.
In the prior art, there are two main methods for preheating the air conditioner compressor: one method is to install a heating device in the compressor shell, detect the outdoor temperature through a sensor, and start the heating device to maintain the temperature of the compressor in a startable temperature range when the temperature is lower than a set threshold value. The method increases the cost, and the heating device heats the air from the outside to the inside of the compressor, thereby increasing the power loss and reducing the energy efficiency of the air conditioner. Another method is to input direct current to the motor windings and preheat the compressor by using its own losses. The method has the problems of serious imbalance of preheating and large loss, and causes energy waste.
Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a preheating method, system, medium and apparatus for a compressor to overcome the disadvantages of unbalanced preheating and low preheating efficiency in the prior art.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a preheating method, system, medium and apparatus for compressor, which is used to improve the problems of unbalanced preheating and low preheating efficiency of the prior art.
To achieve the above and other related objects, an aspect of the present invention provides a preheating method of a compressor, including: sending a preheating instruction to a driver through a main controller, wherein the driver is used for starting a preheating function after acquiring the preheating instruction; judging whether the driver receives the preheating instruction; if so, sending a preheating signal to introduce preheating current to a two-phase motor winding of the compressor to preheat the compressor; if not, no treatment is carried out.
In an embodiment of the present invention, the step of sending a preheating signal to apply a preheating current to the two-phase motor winding of the compressor to preheat the compressor includes: sending a pulse signal to an inverter switching device correspondingly connected with a two-phase motor winding of the compressor so as to introduce preheating current to the two-phase motor winding of the compressor and preheat the compressor; the pulse signal is used for adjusting the magnitude of the preheating current.
In an embodiment of the present invention, the motor winding of the compressor includes a U-phase, a V-phase, and a W-phase; according to the pulse signals, preheating currents are introduced into U-phase and V-phase motor windings of the compressor, and preheating currents are not introduced into the W-phase; or according to the pulse signal, preheating current is introduced to the U-phase motor winding and the W-phase motor winding of the compressor, and preheating current is not introduced to the V-phase motor winding; or according to the pulse signal, preheating current is introduced to the V-phase motor winding and the W-phase motor winding of the compressor, and the preheating current is not introduced to the U-phase motor winding.
In an embodiment of the present invention, after the pulse signal is sent out, an adjustable pulse signal is sent to the inverter switching device correspondingly connected to the two-phase motor winding of the compressor to control the magnitude of the preheating current until the driver receives the preheating stop command sent by the master controller.
In an embodiment of the present invention, the preheating command includes a preheating switch command, a preheating power command and/or a preheating current command. The driver determines the magnitude of the preheat current from the received preheat switch command, preheat power command, and/or preheat current command.
In an embodiment of the present invention, the adjusted pulse signal is adjusted according to a preheat power command and/or a preheat current command obtained by the driver.
In an embodiment of the present invention, before the step of sending the preheating command to the driver through the master controller, the preheating method of the compressor further includes: and receiving and analyzing an environment judgment signal through the main controller, so that the main controller sends a preheating instruction to the driver according to the preheating requirement in the analysis result.
Another aspect of the present invention provides a preheating system of a compressor, including: the main control module is used for sending a preheating instruction to a driver through a main controller, and the driver is used for starting a preheating function after acquiring the preheating instruction; the preheating module is used for judging whether the driver receives the preheating instruction; if so, sending a preheating signal to introduce preheating current to a two-phase motor winding of the compressor to preheat the compressor; if not, no treatment is carried out.
A further aspect of the present invention provides a medium having stored thereon a computer program which, when executed by a processor, implements the preheating method of a compressor.
A final aspect of the invention provides an apparatus comprising: a processor and a memory; the memory is used for storing computer programs, and the processor is used for executing the computer programs stored in the memory so as to enable the equipment to execute the preheating method of the compressor.
As described above, the preheating method, system, medium and apparatus for compressor according to the present invention have the following advantages:
the two-phase winding of the preheating current introduced into the compressor can achieve the same heating effect, and the problem of unbalanced heating of the three-phase winding of the compressor in the traditional preheating method is solved; because only two phases are introduced with preheating current, at most 4 switching devices work according to different modulation modes, the switching loss of the inverter is reduced, and the efficiency of the system is improved; the problem that the temperature of one phase winding is excessively high in the traditional preheating method is solved, and the risk that one phase winding is overheated in the preheating process is reduced.
Drawings
Fig. 1 is a control block diagram illustrating a compressor preheating method according to an embodiment of the present invention.
Fig. 2 is a schematic flow chart illustrating a preheating method for a compressor according to an embodiment of the present invention.
Fig. 3 is a schematic view illustrating a preheating method of a compressor according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of duty cycle driving signals in an embodiment of a preheating method of a compressor according to the present invention.
Fig. 5 is a schematic structural diagram of a preheating method for a compressor according to an embodiment of the present invention.
Description of the element reference numerals
Preheating system of 5 compressor
51 Main control module
52 preheat module
Preheating method steps of S21-S22 compressor
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
The technical principle of the preheating method, the preheating system, the preheating medium and the preheating equipment of the compressor is as follows: sending a preheating instruction to a driver through a main controller, wherein the driver is used for starting a preheating function after acquiring the preheating instruction; judging whether the driver receives the preheating instruction; if so, sending a preheating signal to introduce preheating current to a two-phase motor winding of the compressor to preheat the compressor; if not, no treatment is carried out.
Example one
The embodiment provides a preheating method of a compressor, which comprises the following steps:
sending a preheating instruction to a driver through a main controller, wherein the driver is used for starting a preheating function after acquiring the preheating instruction;
judging whether the driver receives the preheating instruction;
if so, sending a preheating signal to introduce preheating current to a two-phase motor winding of the compressor to preheat the compressor; if not, no treatment is carried out.
The preheating method of the compressor provided in the present embodiment will be described in detail with reference to the drawings.
Referring to fig. 1, a control block diagram of a compressor preheating method according to an embodiment of the present invention is shown. As shown in fig. 1, the preheating method of the compressor is applied to a control structure of the preheating mode of the compressor. S1 to S6 are switching devices of the inverter, where S1 and S2 constitute a U-phase arm, S3 and S4 constitute a V-phase arm, and S5 and S6 constitute a W-phase arm. M corresponds to a driving motor inside the compressor. The driver receives a preheating instruction of the main controller, and preheating current is introduced to the two-phase motor winding of the compressor to preheat the compressor. In the preheating process, the driver sends a driving signal, namely a pulse signal, to the switching device of the inverter, and the inverter is controlled to introduce preheating current to two phases of the compressor to preheat the compressor. The driver adjusts the duty ratio according to the received preheating power command and/or preheating current command so as to control the magnitude of the preheating current.
Referring to fig. 2, a schematic flow chart of a preheating method for a compressor according to an embodiment of the present invention is shown. As shown in fig. 2, the preheating method of the compressor specifically includes the following steps:
s21, sending a preheating command to a driver through a main controller, wherein the driver is used for starting a preheating function after acquiring the preheating command.
S22, judging whether the driver receives the preheating command; if so, sending a preheating signal to introduce preheating current to a two-phase motor winding of the compressor to preheat the compressor; if not, no treatment is carried out.
It should be noted that, in addition to receiving the preheating command, the driver also receives a start/stop operation command of the compressor, a state detection command of the compressor, or a command related to another compressor, and therefore it is necessary to determine whether the driver receives the preheating command. And when the preheating command transmission line is in fault, the preheating command cannot pass the verification due to signal distortion caused by interference in the transmission process or the received command is other commands except the preheating command, judging that the preheating command is not received by the driver.
In this embodiment, the S22 includes: sending a pulse signal to an inverter switching device correspondingly connected with a two-phase motor winding of the compressor so as to introduce preheating current to the two-phase motor winding of the compressor and preheat the compressor; the pulse signal is used for adjusting the magnitude of the preheating current.
Specifically, the pulse signal is a duty ratio driving signal, and in the process of preheating the compressor, the driver sends the duty ratio driving signal to two phase bridge arms of the inverter, so that switching of switching devices of the two phase bridge arms can be controlled, and preheating current with stable magnitude is generated.
Referring to fig. 3, a schematic diagram of a compressor preheating method according to an embodiment of the present invention is shown. As shown in fig. 3, during the preheating process of the compressor, the driving motor inside the M compressor in fig. 1 may be equivalent to a resistive load. Wherein, the U phase is equivalent to an inductor Lu and a resistor Ru; the V phase is equivalent to an inductor Lv and a resistor Rv; the phase W is equivalent to an inductance Lw and a resistance Rw. In the embodiment, the motor winding of the compressor comprises a U phase, a V phase and a W phase; according to the pulse signals, preheating currents are introduced into U-phase and V-phase motor windings of the compressor, and preheating currents are not introduced into the W-phase; or according to the pulse signal, preheating current is introduced to the U-phase motor winding and the W-phase motor winding of the compressor, and preheating current is not introduced to the V-phase motor winding; or according to the pulse signal, preheating current is introduced to the V-phase motor winding and the W-phase motor winding of the compressor, and the preheating current is not introduced to the U-phase motor winding. It should be noted that the preheating effect produced by the preheating current flow mode is the same regardless of which preheating current flow mode is selected.
Specifically, the preheating current only passes through two phases of the three-phase windings of the compressor, so the two phases of currents are equal in magnitude, and the heating values of the corresponding motor windings are also equal. Specifically, if the total power input to the compressor by the inverter is Pt, the thermal resistance of the motor windings to the ambient temperature is Ra, and the U-phase current is equal to the W-phase current, that is, iu is iw, the U-phase power and the W-phase power are also equal, and both are 1/2 of the input power, that is, Pu is Pw is Pt/2. The corresponding U-phase and W-phase winding temperature rises are as follows:
in practical applications, a conventional preheating manner injects a direct current into U, V, W three phases, where the preheating current flows into the compressor from the U-phase and flows out of the compressor from the VW-phase, and the three-phase currents satisfy iu + iv + iw-0 and iv-iw. The U-phase current is therefore twice the V, W-phase current, i according to P2R indicates that the U-phase power is 4 times the V, W-phase power, i.e., Pu-4 Pv-4 Pw. Assuming that the total heating power is Pt, the U-phase power Pu is 2Pt/3, and the VW-phase power Pv is Pw is Pt/6. Because the thermal resistance of the motor winding to the ambient temperature is Ra, the temperature rise of the U, V, W three-phase winding is respectively as follows:the temperature rise of the U phase is 4 times that of the VW phase. Therefore, the traditional preheating method has the problems of unbalanced preheating and obviously higher temperature rise of one phase than the other two phases, which easily causes the danger of overheating of the winding of one phase. U-phase and W-phase windings corresponding to the present embodimentTemperature rise
I.e. less than the temperature rise of the highest temperature winding in the conventional preheating mode. Compared with the traditional preheating method, only 2 phases are connected with direct current, the temperature rise of the preheating phase winding is the same, at most 4 switching tubes work according to the difference of modulation modes, and the inverter in the traditional preheating mode works with at most 6 switching devices, so that the loss of the inverter is reduced, and the overall efficiency of the system is improved; secondly, the temperature rise of the winding with the highest temperature is reduced, and the risk of overheating of a certain phase winding caused by unbalanced preheating in the preheating process is further reduced.
In this embodiment, after the pulse signal is sent out, the magnitude of the preheating current is controlled by sending an adjustable pulse signal to the inverter switching device correspondingly connected to the two-phase motor winding of the compressor until the driver receives the preheating stop command sent by the master controller.
In particular, the adjustable pulse signal may be a continuously varying duty cycle drive signal sent in accordance with the preheat power command and/or preheat current command; or the same or different discrete fixed values, for example, a larger value of duty ratio driving signal is sent in a previous period of time, and a smaller value of duty ratio driving signal is sent in a later period of time; other ways of dynamically adjusting the duty cycle drive signal are also possible.
In this embodiment, the preheat command includes a preheat switch command, a preheat power command, and/or a preheat current command. The driver determines the magnitude of the preheat current based on a received preheat switch command, preheat power command, or preheat current command.
In this embodiment, the adjusted pulse signal is adjusted according to a preheat power command and/or a preheat current command obtained by the driver.
In practical applications, during the preheating process of the winding of the compressor, the duty driving signal may be adjusted according to the preheating power command and/or the preheating current command, referring to fig. 4, which is a schematic diagram of the duty driving signal in an embodiment of the preheating method of the compressor of the present invention, as shown in fig. 4, wherein Ton is an on time of the switching device, Toff is an off time of the switching device, and the duty ratio α of the pulse signal is Ton/(Ton + Toff).
In this embodiment, before S21, an environment determination signal is received and analyzed by the master controller, so that the master controller sends a preheat command to the driver according to the preheat requirement in the analysis result.
It should be noted that the environment judgment signal is a judgment signal obtained after comprehensive consideration of the current environment temperature of the compressor, the temperature duration, the working performance parameters of each component of the compressor, and other factors. The main controller can send a preheating instruction to the driver according to the preheating requirement in the analysis result, and can also send the preheating instruction to the driver according to the existing preheating requirement judging method.
The present embodiment provides a computer storage medium having stored thereon a computer program which, when executed by a processor, implements the preheating method of the compressor.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the above method embodiments may be performed by hardware associated with a computer program. The aforementioned computer program may be stored in a computer readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned computer-readable storage media comprise: various computer storage media that can store program codes, such as ROM, RAM, magnetic or optical disks.
According to the preheating method of the compressor, only 4 switching tubes work at most according to different modulation modes, and compared with the traditional preheating mode, the preheating method of the compressor reduces the loss of an inverter and improves the overall efficiency of a system; secondly, the temperature rise of the winding with the highest temperature is reduced, and the risk of overheating of a certain phase winding caused by unbalanced preheating in the preheating process is further reduced.
Example two
The present embodiment provides a preheating system of a compressor, including:
the main control module is used for sending a preheating instruction to a driver through a main controller, and the driver is used for starting a preheating function after acquiring the preheating instruction;
the preheating module is used for judging whether the driver receives the preheating instruction; if so, sending a preheating signal to introduce preheating current to a two-phase motor winding of the compressor to preheat the compressor; if not, no treatment is carried out.
The preheating system of the compressor provided in the present embodiment will be described in detail with reference to the drawings. It should be noted that the division of the modules of the following system is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity or may be physically separated. And the modules can be realized in a form that all software is called by the processing element, or in a form that all the modules are realized in a form that all the modules are called by the processing element, or in a form that part of the modules are called by the hardware. For example: the x module may be a separate processing element or may be integrated into a chip of the system described below. The x-module may be stored in the memory of the following system in the form of program code, and may be called by one of the processing elements of the following system to execute the functions of the following x-module. Other modules are implemented similarly. All or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, the steps of the above method or the following modules may be implemented by hardware integrated logic circuits in a processor element or instructions in software.
The following modules may be one or more integrated circuits configured to implement the above methods, for example: one or more Application Specific Integrated Circuits (ASICs), one or more Digital Signal Processors (DSPs), one or more Field Programmable Gate Arrays (FPGAs), and the like. When some of the following modules are implemented in the form of a program code called by a processing element, the processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling the program code. These modules may be integrated together and implemented in the form of a System-on-a-chip (SOC).
Referring to fig. 5, a schematic diagram of a preheating system of a compressor according to an embodiment of the present invention is shown. As shown in fig. 5, the preheating system 5 of the compressor comprises: a master control module 51 and a preheat module 52.
The main control module 51 is configured to send a preheating instruction to a driver through a main controller, and the driver is configured to start a preheating function after acquiring the preheating instruction.
The preheating module 52 is configured to determine whether the driver receives the preheating command; if so, sending a preheating signal to introduce preheating current to a two-phase motor winding of the compressor to preheat the compressor; if not, no treatment is carried out.
In this embodiment, the preheating module 52 is specifically configured to send a pulse signal to an inverter switching device correspondingly connected to a two-phase motor winding of the compressor, so as to apply a preheating current to the two-phase motor winding of the compressor, so as to preheat the compressor; the pulse signal is used for adjusting the magnitude of the preheating current.
In practical application, the motor winding of the compressor comprises a U phase, a V phase and a W phase; the preheating module 52 is configured to introduce preheating current into the U-phase and V-phase motor windings of the compressor according to the pulse signal, and not introduce preheating current into the W-phase; or according to the pulse signal, preheating current is introduced to the U-phase motor winding and the W-phase motor winding of the compressor, and preheating current is not introduced to the V-phase motor winding; or according to the pulse signal, preheating current is introduced to the V-phase motor winding and the W-phase motor winding of the compressor, and the preheating current is not introduced to the U-phase motor winding.
Further, after the pulse signal is sent out, the preheating module 52 is further configured to control the magnitude of the preheating current by sending an adjustable pulse signal to inverter switching devices correspondingly connected to the two-phase motor windings of the compressor until the driver receives a preheating stop command sent by the master controller.
In this embodiment, the preheat command includes a preheat switch command, a preheat power command, and/or a preheat current command. The driver determines the magnitude of the preheat current from the received preheat switch command, preheat power command, and/or preheat current command.
In this embodiment, the adjusted pulse signal is adjusted according to a preheat power command and/or a preheat current command obtained by the driver.
In this embodiment, the main control module 51 is further configured to receive and analyze an environment determination signal by the main controller before sending the preheating command to the driver by the main controller, so that the main controller sends the preheating command to the driver according to the preheating requirement in the analysis result.
According to the preheating system of the compressor, only 4 switching tubes work at most according to different modulation modes, and compared with the traditional preheating mode, the preheating system of the compressor reduces the loss of an inverter and improves the overall efficiency of the system; secondly, the temperature rise of the winding with the highest temperature is reduced, and the risk of overheating of a certain phase winding caused by unbalanced preheating in the preheating process is further reduced.
EXAMPLE III
The present embodiment provides an apparatus, comprising: a processor, memory, transceiver, communication interface, or/and system bus; the memory is used for storing computer programs and the communication interface is used for communicating with other devices, and the processor and the transceiver are used for operating the computer programs to enable the devices to execute the steps of the preheating method of the compressor.
Specifically, the apparatus comprises: a processor, memory, transceiver, communication interface, or/and system bus; the memory is used for storing computer programs and the communication interface is used for communicating with other devices, and the processor and the transceiver are used for operating the computer programs to enable the devices to execute the steps of the preheating method of the compressor.
The above-mentioned system bus may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The system bus may be divided into an address bus, a data bus, a control bus, and the like. The communication interface is used for realizing communication between the database access device and other equipment (such as a client, a read-write library and a read-only library). The Memory may include a Random Access Memory (RAM), and may further include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory.
The Processor may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the device can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components.
The protection scope of the preheating method for the compressor according to the present invention is not limited to the execution sequence of the steps illustrated in the embodiment, and all the solutions of the prior art, including the addition, subtraction and replacement of steps according to the principle of the present invention, are included in the protection scope of the present invention.
The present invention also provides a preheating system of a compressor, which can implement the preheating method of a compressor according to the present invention, but the implementation device of the preheating method of a compressor according to the present invention includes, but is not limited to, the structure of the preheating system of a compressor as exemplified in the present embodiment, and all the structural modifications and substitutions of the prior art made according to the principles of the present invention are included in the scope of the present invention.
In conclusion, the preheating method, the preheating system, the preheating medium and the preheating equipment of the compressor can enable the two-phase windings introduced with preheating current into the compressor to achieve the same heating effect, and the problem of unbalanced heating of the three-phase windings of the compressor in the traditional preheating method is solved; because only two phases are introduced with preheating current, at most 4 switching devices work according to different modulation modes, the switching loss of the inverter is reduced, and the efficiency of the system is improved; the problem that the temperature of one phase winding is excessively high in the traditional preheating method is solved, and the risk that one phase winding is overheated in the preheating process is reduced. The invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (9)
1. A preheating method of a compressor, comprising:
sending a preheating instruction to a driver through a main controller, wherein the driver is used for starting a preheating function after acquiring the preheating instruction;
judging whether the driver receives the preheating instruction;
if so, sending a preheating signal to introduce preheating current to a two-phase motor winding of the compressor to preheat the compressor; if not, no treatment is carried out.
2. A method for preheating a compressor as recited in claim 1, wherein a preheating signal is issued to apply a preheating current to a two-phase motor winding of said compressor, and the step of preheating said compressor comprises:
sending a pulse signal to an inverter switching device correspondingly connected with a two-phase motor winding of the compressor so as to introduce preheating current to the two-phase motor winding of the compressor and preheat the compressor; the pulse signal is used for adjusting the magnitude of the preheating current.
3. The preheating method of a compressor as set forth in claim 2,
the motor winding of the compressor comprises a U phase, a V phase and a W phase;
according to the pulse signals, preheating currents are introduced into U-phase and V-phase motor windings of the compressor, and preheating currents are not introduced into the W-phase; or
According to the pulse signals, preheating currents are introduced into U-phase and W-phase motor windings of the compressor, and preheating currents are not introduced into the V-phase; or
And according to the pulse signals, preheating current is introduced to the V-phase motor winding and the W-phase motor winding of the compressor, and the preheating current is not introduced to the U-phase motor winding.
4. The preheating method of a compressor as set forth in claim 2,
after the pulse signal is sent out, the adjustable pulse signal is sent to an inverter switching device correspondingly connected with a two-phase motor winding of the compressor so as to control the magnitude of preheating current until the driver receives a preheating stop command sent by the main controller.
5. The preheating method of a compressor as set forth in claim 1,
the preheat command includes a preheat switch command, a preheat power command, and/or a preheat current command. The driver determines the magnitude of the preheat current from the received preheat switch command, preheat power command, and/or preheat current command.
6. The preheating method of a compressor according to claim 5,
the adjusted pulse signal is adjusted according to a preheat power command and/or a preheat current command acquired by the driver.
7. A preheating system of a compressor, comprising:
the main control module is used for sending a preheating instruction to a driver through a main controller, and the driver is used for starting a preheating function after acquiring the preheating instruction;
the preheating module is used for judging whether the driver receives the preheating instruction; if so, sending a preheating signal to introduce preheating current to a two-phase motor winding of the compressor to preheat the compressor; if not, no treatment is carried out.
8. A medium on which a computer program is stored, characterized in that the program, when executed by a processor, implements the preheating method of a compressor according to any one of claims 1 to 6.
9. An apparatus, comprising: a processor and a memory;
the memory is used for storing a computer program, and the processor is used for executing the computer program stored by the memory to cause the device to execute the preheating method of the compressor as claimed in any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911076904.1A CN110838811A (en) | 2019-11-06 | 2019-11-06 | Compressor preheating method, system, medium and equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911076904.1A CN110838811A (en) | 2019-11-06 | 2019-11-06 | Compressor preheating method, system, medium and equipment |
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| CN110838811A true CN110838811A (en) | 2020-02-25 |
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| CN201911076904.1A Pending CN110838811A (en) | 2019-11-06 | 2019-11-06 | Compressor preheating method, system, medium and equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111463979A (en) * | 2020-04-10 | 2020-07-28 | 儒竞艾默生环境优化技术（上海）有限公司 | Preheating method, preheating device and preheating system for compressor |
| CN111884553A (en) * | 2020-08-04 | 2020-11-03 | 儒竞艾默生环境优化技术（上海）有限公司 | Current vector control method, medium, device and system for preheating compressor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101275547A (en) * | 2007-03-28 | 2008-10-01 | 三星电子株式会社 | Method and preheating control apparatus of compressor |
| CN103743059A (en) * | 2013-12-23 | 2014-04-23 | 广东美芝精密制造有限公司 | Air conditioner and pre-heating control method and device of compressor |
| CN109058080A (en) * | 2018-08-13 | 2018-12-21 | 珠海格力电器股份有限公司 | Method and device for heating compressor by utilizing stator winding |
| CN109682020A (en) * | 2018-12-28 | 2019-04-26 | Tcl空调器(中山)有限公司 | A kind of compressor preheating control method, system, storage medium and air-conditioner outdoor unit |
| CN110138311A (en) * | 2019-06-18 | 2019-08-16 | 宁波奥克斯电气股份有限公司 | A kind of compressor invariable power preheating control method, circuit and air conditioner |
-
2019
- 2019-11-06 CN CN201911076904.1A patent/CN110838811A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101275547A (en) * | 2007-03-28 | 2008-10-01 | 三星电子株式会社 | Method and preheating control apparatus of compressor |
| CN103743059A (en) * | 2013-12-23 | 2014-04-23 | 广东美芝精密制造有限公司 | Air conditioner and pre-heating control method and device of compressor |
| CN109058080A (en) * | 2018-08-13 | 2018-12-21 | 珠海格力电器股份有限公司 | Method and device for heating compressor by utilizing stator winding |
| CN109682020A (en) * | 2018-12-28 | 2019-04-26 | Tcl空调器(中山)有限公司 | A kind of compressor preheating control method, system, storage medium and air-conditioner outdoor unit |
| CN110138311A (en) * | 2019-06-18 | 2019-08-16 | 宁波奥克斯电气股份有限公司 | A kind of compressor invariable power preheating control method, circuit and air conditioner |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111463979A (en) * | 2020-04-10 | 2020-07-28 | 儒竞艾默生环境优化技术（上海）有限公司 | Preheating method, preheating device and preheating system for compressor |
| CN111884553A (en) * | 2020-08-04 | 2020-11-03 | 儒竞艾默生环境优化技术（上海）有限公司 | Current vector control method, medium, device and system for preheating compressor |
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Application publication date: 20200225 |