CN105134570A - Method and system for controlling starting of fixed frequency compressor - Google Patents
Method and system for controlling starting of fixed frequency compressor Download PDFInfo
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- CN105134570A CN105134570A CN201510536963.8A CN201510536963A CN105134570A CN 105134570 A CN105134570 A CN 105134570A CN 201510536963 A CN201510536963 A CN 201510536963A CN 105134570 A CN105134570 A CN 105134570A
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- frequency compressor
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Abstract
The invention discloses a method and system for controlling starting of a fixed frequency compressor. The method comprises the following steps: detecting power input voltage for starting the fixed frequency compressor through a mainboard before electrifying a device; comparing the power input voltage with the preset voltage through the mainboard so as to determine whether to start to connect a voltage division circuit to a power supply circuit between a power supply and the fixed frequency compressor; starting to connect the voltage division circuit to the power supply circuit through the mainboard if the power input voltage is not smaller than the preset voltage, and opening a power voltage input circuit, so as to decrease the input voltage inputted to the fixed frequency compressor. With the adoption of the method and the system, the technical problems in the prior art that excessively high starting voltage of the fixed frequency compressor leads to large impact on a pipeline and a housing and high noise is caused, which decrease the reliability and comfort of the fixed frequency compressor, can be solved.
Description
Technical field
The present invention relates to electrical equipment control field, in particular to a kind of controlling method and the system that start invariable frequency compressor.
Background technique
Compressor, as the heart of refrigeration system, is widely used in the working conditions such as air-conditioning, freezer, chemical refrigeration technique.Compressor is exactly the compression and the course of conveying that are completed gas by the volume of change gas in simple terms, and invariable frequency compressor refers to the compressor that rotating speed is substantially constant, compressor constantly " is driven, stops " to main dependence to adjust room temperature, frequency of supply is higher, compressor rotary speed is faster, and compressor refrigerating capacity is larger.
It is all directly be connected with external power supply by single contactor that the invariable frequency compressor of present production starts, and namely external input voltage value is exactly compressor start magnitude of voltage.Due to the starting characteristic of invariable frequency compressor, compressor reaches maximum (top) speed instantaneously when starting, and compressor is very large by the static moment produced to maximum (top) speed.Starting torque just because of compressor is very large, and the inrush current needed when therefore starting is higher than rated current, and the voltage functuation of electrical network can be caused like this to damage.Further, excessive starting torque can produce mechanical shock, causes large impact force to pipeline and housing, shortens the working life of compressor, and can produce serious noise when starting.Meanwhile, when needs larger refrigerating capacity time, just need the voltage providing higher frequency to compressor, the starting torque of such compressor can be larger, even more serious to the impact of pipeline.And because compressor in use needs frequent startup-shutdown, pipeline there will be and splits pipe hidden danger so in the course of time.
Too high for the starting resistor due to invariable frequency compressor in prior art, cause the impact of pipeline and housing comparatively large, and produce serious noise, reduce the reliability of invariable frequency compressor and the problem of travelling comfort, not yet propose effective solution at present.
Summary of the invention
Embodiments provide a kind of controlling method and the system that start invariable frequency compressor, too high with the starting resistor at least solved due to invariable frequency compressor in prior art, cause the impact of pipeline and housing larger, and produce serious noise, reduce the reliability of invariable frequency compressor and the technical problem of travelling comfort.
According to an aspect of the embodiment of the present invention, provide a kind of controlling method starting invariable frequency compressor, the compressor control system applying this controlling method comprises: power supply, invariable frequency compressor and the bleeder circuit be arranged between power supply and invariable frequency compressor and supply voltage input circlult, above-mentioned controlling method comprises: after device power, and mainboard detects the power input voltage for starting invariable frequency compressor; Mainboard, by comparing power input voltage and predeterminated voltage, determines whether to start the power supply circuits between bleeder circuit access power supply and invariable frequency compressor; When power input voltage is more than or equal to predeterminated voltage, mainboard starts bleeder circuit access power supply circuits, and powered-down voltage input circuit, to reduce the input voltage inputing to invariable frequency compressor.
According to the another aspect of the embodiment of the present invention, additionally provide a kind of control system starting invariable frequency compressor, this control system comprises: power supply, for generation of power input voltage; Invariable frequency compressor, via supply voltage input circlult access power supply; Bleeder circuit, is arranged between power supply and invariable frequency compressor, in parallel with supply voltage input circlult; Mainboard, being electrically connected with supply voltage input circlult and bleeder circuit respectively, if for detecting that power input voltage is more than or equal to predeterminated voltage, then starting bleeder circuit access power supply circuits, and powered-down voltage input circuit, to reduce the input voltage inputing to invariable frequency compressor.
In embodiments of the present invention, between power supply and invariable frequency compressor, bleeder circuit is set, by after device power, mainboard detects the power input voltage for starting invariable frequency compressor, by comparing power input voltage and predeterminated voltage, determine whether to start the power supply circuits between bleeder circuit access power supply and invariable frequency compressor, when power input voltage is more than or equal to predeterminated voltage, mainboard starts bleeder circuit access power supply circuits, and powered-down voltage input circuit, to reduce the input voltage inputing to invariable frequency compressor, thus realize the input voltage reducing invariable frequency compressor, make invariable frequency compressor when outside power input voltage value is larger further, the input voltage startup that one less can be used, so not only ensure that invariable frequency compressor starts when input voltage is rated operational voltage value, can also avoid due to external power supply input voltage higher time invariable frequency compressor start impact to unit pipeline, thus starting resistor due to invariable frequency compressor in solution prior art is too high, cause the impact of pipeline and housing larger, and produce serious noise, reduce the reliability of invariable frequency compressor and the problem of travelling comfort.It can thus be appreciated that the controlling method of the control invariable frequency compressor that the above embodiments of the present application provide can realize invariable frequency compressor and maintain low voltage startup, and noise when making invariable frequency compressor start is less, improves the likability of user.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the controlling method of startup invariable frequency compressor according to the embodiment of the present invention;
Fig. 2 is the circuit diagram of a kind of optional compressor control system according to the embodiment of the present invention;
Fig. 3 is the flow chart of the controlling method of a kind of optional startup invariable frequency compressor according to the embodiment of the present invention; And
Fig. 4 is the schematic diagram of the control system of startup invariable frequency compressor according to the embodiment of the present invention.
Embodiment
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technological scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
It should be noted that, term " first ", " second " etc. in specification of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiments of the invention described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
Embodiment 1
According to the embodiment of the present invention, provide a kind of controlling method embodiment starting invariable frequency compressor, it should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, in some cases, can be different from the step shown or described by order execution herein.
The compressor control system applying this controlling method comprises: power supply, invariable frequency compressor, be arranged at bleeder circuit between power supply and invariable frequency compressor and supply voltage input circlult, and the mainboard be electrically connected with power supply, invariable frequency compressor, bleeder circuit and supply voltage input circlult.
Fig. 1 is a kind of flow chart starting the controlling method of invariable frequency compressor according to the embodiment of the present invention, and as shown in Figure 1, the method comprises the steps:
Step S102, after device power, mainboard detects the power input voltage for starting invariable frequency compressor.
Concrete, in step s 102, can, by designing an input voltage detection circuit on mainboard in advance, use input voltage detection circuit to detect power input voltage value.Alternatively, Fig. 2 is the circuit diagram of a kind of optional compressor control system according to the embodiment of the present invention, and composition graphs 2 is known, and power supply is the Power in Fig. 2, and be Ac, L represents live wire, and N represents zero line.Mainboard one end is connected with power electric, and one end is electrically connected with KM1 and KM2, mainboard has the module of control KM1 and KM2, and on mainboard, AC-L represents that mainboard is electrically connected with the live wire of power supply, and AC-N represents that mainboard is electrically connected with the zero line of power supply.
Step S104, mainboard, by comparing power input voltage and predeterminated voltage, determines whether to start the power supply circuits between bleeder circuit access power supply and invariable frequency compressor.
Concrete, in step S104, the size of predeterminated voltage depends on the operating voltage of invariable frequency compressor, and such as, invariable frequency compressor nominal rated voltage is 220V, and usual voltage range can work in 180V to 250V.Predeterminated voltage sets according to the operating voltage of invariable frequency compressor, when the operating voltage of invariable frequency compressor is 110V, then preset voltage value can be chosen at any one value in 100V to 120V, and when adopting the invariable frequency compressor of 400V, predeterminated voltage is chosen between 390V to 400V.Composition graphs 2 is known, if by input voltage detection circuit, mainboard detects that supply voltage exceedes predeterminated voltage, then by the disconnection of KM1 and KM2 control module control KM1 and KM2 or can close.
Step S106, when power input voltage is more than or equal to predeterminated voltage, mainboard starts bleeder circuit access power supply circuits, and powered-down voltage input circuit, to reduce the input voltage inputing to invariable frequency compressor.
Concrete; in step s 106; power input voltage is more than or equal to predeterminated voltage; namely supply voltage is more than or equal to the operating voltage of invariable frequency compressor; supply voltage input circlult is in parallel with bleeder circuit; start any one circuit and all can reach the object starting invariable frequency compressor; in order to protect invariable frequency compressor; reduce the voltage of input invariable frequency compressor; bleeder circuit can be accessed; deenergization voltage input circuit, avoids power input voltage directly to access invariable frequency compressor, reaches the object sharing input voltage.Composition graphs 2 is known, when by input voltage detection circuit, mainboard detects that supply voltage is more than or equal to predeterminated voltage, is then closed by control module control KM2, KM1 disconnects, access R resistance is connected with invariable frequency compressor, shares partial power voltage, reaches the magnitude of voltage reducing input invariable frequency compressor.
In the above embodiments of the present application, bleeder circuit and supply voltage input circlult are set between invariable frequency compressor and power supply, before startup invariable frequency compressor, the above embodiments of the present application provide a kind of scheme, after device power, mainboard is by comparing power input voltage and predeterminated voltage, determine whether to start the power supply circuits before bleeder circuit access power supply and invariable frequency compressor, when mainboard judges that power input voltage is more than or equal to predeterminated voltage time, determine to start bleeder circuit access power supply circuits, supply voltage input circlult does not access power supply circuits, reduce the input voltage inputing to invariable frequency compressor.Therefore, such scheme can realize the input voltage reducing invariable frequency compressor, easily notice, the input voltage of invariable frequency compressor can be reduced owing to starting bleeder circuit, thus make invariable frequency compressor when outside supply voltage value is larger, the input voltage startup that one less can be used, so not only ensure that invariable frequency compressor starts when amount of imports fixed working voltage value, can also avoid due to external power supply input voltage higher time invariable frequency compressor start impact to unit pipeline, thus starting resistor due to invariable frequency compressor in solution prior art is too high, cause the impact of pipeline and housing larger, and produce serious noise, reduce the reliability of invariable frequency compressor and the problem of travelling comfort.It can thus be appreciated that the controlling method of the control invariable frequency compressor that the above embodiments of the present application provide can realize invariable frequency compressor and maintain low voltage startup, and noise when making invariable frequency compressor start is less, improves the likability of user.
Alternatively, in the above embodiments of the present application, the bleeder circuit in step S106 comprises: the first contactor and divider resistance, and wherein, the step starting bleeder circuit access power supply circuits comprises:
Step S1061, mainboard controls the first contactor and closes, and makes invariable frequency compressor via the first contactor and divider resistance access power supply.
Concrete, divider resistance is not limited to simple resistance, also can be other loads, and select the divider resistance of suitable resistance according to Ohm's law, and alternatively, the resistance of divider resistance depends on rated operational voltage and the power input voltage of invariable frequency compressor.Composition graphs 2 is known, and divider resistance is exactly the R resistance in Fig. 2, and the first contactor is that after KM2 and L2, R resistance is connected with L2, one end is electrically connected with invariable frequency compressor, and one end is connected with power electric, and one end is electrically connected with mainboard.Mainboard controls the first contactor and closes, and namely mainboard is closed by control module control KM2, and switch L2 is closed, and invariable frequency compressor and R resistant series access power supply, make R resistance share portion voltage, thus reduce the input voltage inputing to invariable frequency compressor.
Alternatively, in the above embodiments of the present application, the step of this controlling method also comprises:
Step S108, when power input voltage is less than predeterminated voltage, mainboard starts supply voltage input circlult access power supply circuits, makes invariable frequency compressor use power input voltage to start.
Concrete, composition graphs 2 is known, and when input voltage detection circuit detects that supply voltage is less than predeterminated voltage, mainboard starts supply voltage input circlult access power supply circuits, and namely mainboard is closed by control module control KM1.
By above-mentioned steps S108, mainboard starts supply voltage input circlult access power supply circuits, makes invariable frequency compressor directly use power input voltage to start.Now divider resistance does not access power supply circuits, and can prevent when external power supply input voltage itself is not high, input voltage divider resistance put in circuit being dragged down further invariable frequency compressor causes invariable frequency compressor to start unsuccessfully.
Alternatively, in the above embodiments of the present application, comprise: the second contactor in step S108 supply voltage input circlult, wherein, mainboard starts supply voltage input circlult access power supply circuits, and the step making invariable frequency compressor use power input voltage to start comprises:
Step S1081, mainboard controls the second contactor and closes, and controls the first contactor and be in open mode, makes invariable frequency compressor via the second contactor access power supply.
Concrete, composition graphs 2 is known, and the second contactor is that KM1 and L1, L1 one end is electrically connected with invariable frequency compressor, and the other end is connected with power electric, and KM1 one end is connected with power electric, and the other end is electrically connected with mainboard.Mainboard controls the second contactor and closes, namely mainboard is closed by control module control KM1, switch L1 is closed, control the first contactor and be in open mode, namely mainboard stays open state by control module control KM2, switch L2 is opened, thus invariable frequency compressor is directly connected with power electric, uses power input voltage to start.
By above-mentioned steps S1081, supply voltage input circlult is in parallel with bleeder circuit, and mainboard controls the second contactor and closes, and makes invariable frequency compressor via the second contactor access power supply, directly uses power input voltage to start.Control the first contactor and be in open mode, namely ensure that divider resistance does not access power supply circuits, avoid reducing voltage when invariable frequency compressor starts.
Alternatively, in the above embodiments of the present application, start bleeder circuit access power supply circuits in step S106 mainboard, and the step of powered-down voltage input circuit also comprises:
Step S1062, mainboard controls the first contactor and closes, and controls the second contactor and be in open mode.
Concrete, composition graphs 2 is known, and mainboard controls the first contactor and closes, and control the second contactor and be in open mode and mainboard is closed by control module controls KM2, control KM1 is in open mode, and make switch L2 closed, switch L1 is in open mode.L1 is in open mode and ensures that R resistance can not be shorted, and avoids causing invariable frequency compressor directly to use power input voltage to start because L1 is closed.
By above-mentioned steps S1062, mainboard controls the first contactor and closes, and divider resistance is accessed power supply circuits, and divider resistance divides to fall some voltages, reduces voltage during compressor start.Control the second contactor and be in open mode, avoid causing divider resistance short circuit because the second contactor is closed, cause invariable frequency compressor directly to use power input voltage to start.
Alternatively, in the above embodiments of the present application, the step of this controlling method also comprises:
Step S101, after time delay first preset duration, mainboard starts supply voltage input circlult, makes invariable frequency compressor use power input voltage;
Concrete, mainboard controls the second contactor and closes, thus starts supply voltage input circlult, makes invariable frequency compressor via the second contactor access power supply, directly uses power input voltage.Composition graphs 2 is known, and mainboard is closed by control module control KM1, and switch L1 is closed, and R resistance is shorted, and invariable frequency compressor is directly connected with power electric, directly uses power input voltage.
Step S103, after time delay second preset duration, mainboard disconnects bleeder circuit.
Concrete, mainboard controls the first contactor and opens, thus closes bleeder circuit, make bleeder circuit disconnect the connection with power supply circuits, composition graphs 2 is known, and mainboard is opened by control module control KM2, switch L2 is opened, and R resistance disconnects and being connected with power electric, no longer shares supply voltage.
Optionally, the input voltage of the first preset duration and the second preset duration and invariable frequency compressor has nothing to do, and two preset duration can shift to an earlier date or delay, and in a kind of optional embodiment, two preset duration can be set to 1 minute.
By above-mentioned steps S101 to step S103, after invariable frequency compressor startup optimization a period of time, closed second contactor, starts power supply input circuit, divider resistance is equivalent to disconnect the connection with power supply circuits by short circuit, makes the direct power taking of invariable frequency compressor and external power supply.After time delay second preset duration, open the first contactor, disconnect the connection of bleeder circuit and power supply circuits, reduce the power consumption of power supply circuits.
Fig. 3 is the flow chart of the controlling method of a kind of optional startup invariable frequency compressor according to the embodiment of the present invention, the schematic diagram of the control system shown in composition graphs 2, and as shown in Figure 3, a kind of detailed step of optional application scenarios is:
S21: receive power-on command.
Concrete, in above-mentioned steps S21, receive power-on command, equipment is powered on.
S22: detect input voltage value, whether be less than M value.
Concrete, in above-mentioned steps S22, mainboard detects power input voltage by voltage check device after upper pressure, judges whether it is less than M value, and wherein, M value is predeterminated voltage, depends on the operating voltage of compressor.If input voltage value is less than M value, enter step S23, if not, then enter step S24.
S23: when input voltage value is less than M value, KM1 are closed.
Concrete, in above-mentioned steps S23, KM1 is the second contactor, forms supply voltage input circlult.When power input voltage is less than predeterminated voltage, closed second contactor, start supply voltage input circlult, invariable frequency compressor is via the second contactor access power supply, invariable frequency compressor is made directly to use power input voltage to start, and the first contactor disconnects, and makes divider resistance not put in circuit, prevents sharing voltage due to divider resistance and cause invariable frequency compressor to start unsuccessfully.
S24: when input voltage value is not less than M value, KM2 action closes, and KM1 is failure to actuate.
Concrete, in above-mentioned steps S24, KM2 is the first contactor, and bleeder circuit in series with divider resistance, bleeder circuit is in parallel with supply voltage input circlult.When power input voltage is not less than predeterminated voltage, closed first contactor, start bleeder circuit, divider resistance is accessed power supply circuits, reduce the starting resistor of invariable frequency compressor, and the second contactor disconnects, prevent from causing divider resistance short circuit because the second contactor is closed, cause invariable frequency compressor directly to use power input voltage to start.
After S25: one minute, KM1 action closes.
Concrete, in above-mentioned steps S25, closed first contactor, make divider resistance be equivalent to break by short circuit and power supply circuits, compressor operating voltage directly uses power input voltage.
After S26: one minute, KM2 disconnects.
Concrete, in above-mentioned steps S26, disconnect the second contactor, divider resistance is broken and power supply circuits, reduce the power consumption of power supply circuits.
S27: complete invariable frequency compressor and start control.
Concrete, in above-mentioned steps S27, complete two contactors and control invariable frequency compressor startup, reduce the impact of invariable frequency compressor when outside power input voltage is larger to pipeline.
Embodiment 2
According to the embodiment of the present invention, additionally provide the control system embodiment starting invariable frequency compressor.The controlling method of the startup invariable frequency compressor in the embodiment of the present invention one can the embodiment of the present invention 2 for control invariable frequency compressor control system in perform.
Fig. 4 is the schematic diagram of the control system of startup invariable frequency compressor according to the embodiment of the present invention, and as shown in Figure 4, this control system comprises:
Power supply 31, for generation of power input voltage.
Invariable frequency compressor 32, accesses power supply via supply voltage input circlult 33.
Bleeder circuit 34, is arranged between power supply 31 and invariable frequency compressor 32, in parallel with supply voltage input circlult 33.
Mainboard 35, be electrically connected with power supply 31, supply voltage input circlult 33 and bleeder circuit 34 respectively, adopt the controlling method in embodiment one: if detect that power input voltage is more than or equal to predeterminated voltage, then start bleeder circuit access power supply circuits, and powered-down voltage input circuit, to reduce the input voltage inputing to invariable frequency compressor.
In the above embodiments of the present application, bleeder circuit and supply voltage input circlult are set between invariable frequency compressor and power supply, before startup invariable frequency compressor, the above embodiments of the present application provide a kind of scheme, after device power, mainboard is by comparing power input voltage and predeterminated voltage, determine whether to start the power supply circuits before bleeder circuit access power supply and invariable frequency compressor, when mainboard judges that power input voltage is more than or equal to predeterminated voltage time, determine to start bleeder circuit access power supply circuits, supply voltage input circlult does not access power supply circuits, reduce the input voltage inputing to invariable frequency compressor.Therefore, such scheme can realize the input voltage reducing invariable frequency compressor, easily notice, the input voltage of invariable frequency compressor can be reduced owing to starting bleeder circuit, thus make invariable frequency compressor when outside supply voltage value is larger, the input voltage startup that one less can be used, so not only ensure that invariable frequency compressor starts when amount of imports fixed working voltage value, can also avoid due to external power supply input voltage higher time invariable frequency compressor start impact to unit pipeline, thus starting resistor due to invariable frequency compressor in solution prior art is too high, cause the impact of pipeline and housing larger, and produce serious noise, reduce the reliability of invariable frequency compressor and the problem of travelling comfort.Passable thus, the controlling method of the control invariable frequency compressor that the above embodiments of the present application provide can realize invariable frequency compressor and maintain low voltage startup, and noise when invariable frequency compressor starts is less, improves the likability of user.
Alternatively, bleeder circuit 34 comprises:
First contactor 341, is electrically connected with power supply 31 and mainboard 35, accesses power supply circuits for starting bleeder circuit 34 when being under closed state.
Divider resistance 342, connects with the first contactor 341, for sharing power input voltage.
Concrete, divider resistance is not limited to simple resistance, also can be other loads, and select the divider resistance of suitable resistance according to Ohm's law, and alternatively, the resistance of divider resistance depends on rated operational voltage and the power input voltage of invariable frequency compressor.In order to ensure that divider resistance plays dividing potential drop effect, needing connects divider resistance with invariable frequency compressor accesses power supply, so also just makes invariable frequency compressor via the first contactor and divider resistance access power supply, thus reduces the input voltage inputing to invariable frequency compressor.
Alternatively, if mainboard is also for detecting that power input voltage is less than predeterminated voltage, then starting supply voltage input circlult access power supply circuits, making invariable frequency compressor use power input voltage to start.
Concrete, mainboard starts supply voltage input circlult access power supply circuits, makes invariable frequency compressor directly use power input voltage to start.Now divider resistance does not access power supply circuits, and can prevent when external power supply input voltage itself is not high, input voltage divider resistance put in circuit being dragged down further invariable frequency compressor causes invariable frequency compressor to start unsuccessfully.
Alternatively, supply voltage input circlult 33 comprises:
Second contactor 331, is arranged between power supply and invariable frequency compressor, for when being under closed state, makes invariable frequency compressor via the second contactor access power supply.
Concrete, supply voltage input circlult is in parallel with bleeder circuit, and mainboard controls the second contactor and closes, and makes invariable frequency compressor via the second contactor access power supply, directly uses power input voltage to start.Control the first contactor and be in open mode, namely ensure that divider resistance does not access power supply circuits, avoid reducing voltage when invariable frequency compressor starts.
Alternatively, mainboard, also for after time delay first preset duration, starts supply voltage input circlult, and after time delay second preset duration, disconnects bleeder circuit.
Concrete, after time delay first duration, mainboard controls the second contactor and closes, thus starts supply voltage input circlult, makes invariable frequency compressor via the second contactor access power supply, thus makes invariable frequency compressor use power input voltage.After time delay second duration, mainboard controls the first contactor and opens, thus disconnects bleeder circuit, makes bleeder circuit disconnect the connection with power supply circuits, reduces the power consumption of power supply circuits.The input voltage of the first preset duration and the second preset duration and invariable frequency compressor has nothing to do, and two preset duration can shift to an earlier date or delay, and in a kind of optional embodiment, two preset duration can be set to 1 minute.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
In the above embodiment of the present invention, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
In several embodiments that the application provides, should be understood that, disclosed technology contents, the mode by other realizes.Wherein, device embodiment described above is only schematic, the division of such as unit, can be that a kind of logical function divides, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the INDIRECT COUPLING of unit or module or communication connection can be electrical or other form.
The unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed on multiple unit.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technological scheme of the present invention contributes to prior art in essence in other words or all or part of of this technological scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprises all or part of step of some instructions in order to make a computer equipment (can be personal computer, server or the network equipment etc.) perform each embodiment's method of the present invention.And aforesaid storage medium comprises: USB flash disk, ROM (read-only memory) (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), portable hard drive, magnetic disc or CD etc. various can be program code stored medium.
Below be only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (11)
1. one kind starts the controlling method of invariable frequency compressor, it is characterized in that, the compressor control system applying described controlling method comprises: power supply, invariable frequency compressor and the bleeder circuit be arranged between described power supply and described invariable frequency compressor and supply voltage input circlult, and described method comprises:
After device power, mainboard detects the power input voltage for starting described invariable frequency compressor;
Described mainboard by more described power input voltage and predeterminated voltage, determines whether to start described bleeder circuit and accesses power supply circuits between described power supply and described invariable frequency compressor;
When described power input voltage is more than or equal to described predeterminated voltage, described mainboard starts described bleeder circuit and accesses described power supply circuits, and closes described supply voltage input circlult, to reduce the input voltage inputing to described invariable frequency compressor.
2. method according to claim 1, is characterized in that, described bleeder circuit comprises: the first contactor and divider resistance, wherein, starts described bleeder circuit and accesses described power supply circuits and comprise:
Described mainboard controls described first contactor and closes, and makes described invariable frequency compressor access described power supply via described first contactor and described divider resistance.
3. method according to claim 2, it is characterized in that, when described power input voltage is less than described predeterminated voltage, described mainboard starts described supply voltage input circlult and accesses described power supply circuits, makes described invariable frequency compressor use described power input voltage to start.
4. method according to claim 3, is characterized in that, described supply voltage input circlult comprises: the second contactor, wherein, described mainboard starts described supply voltage input circlult and accesses described power supply circuits, makes described invariable frequency compressor use described power input voltage to start, comprising:
Described mainboard controls described second contactor and closes, and controls described first contactor and be in open mode, makes described invariable frequency compressor access described power supply via described second contactor.
5. method according to claim 4, is characterized in that, described mainboard starts described bleeder circuit and accesses described power supply circuits, and closes described supply voltage input circlult, comprising:
Described mainboard controls described first contactor and closes, and controls described second contactor and be in open mode.
6. method as claimed in any of claims 1 to 5, is characterized in that, starts described bleeder circuit access described power supply circuits at described mainboard, and after closing described supply voltage input circlult, described method also comprises:
After time delay first preset duration, described mainboard starts described supply voltage input circlult, makes described invariable frequency compressor use described power input voltage;
After time delay second preset duration, described mainboard disconnects described bleeder circuit.
7. start a control system for invariable frequency compressor, it is characterized in that, described system comprises:
Power supply, for generation of power input voltage;
Invariable frequency compressor, accesses described power supply via supply voltage input circlult;
Bleeder circuit, is arranged between described power supply and described invariable frequency compressor, in parallel with described supply voltage input circlult;
Mainboard, respectively with described power supply, described supply voltage input circlult and the electrical connection of described bleeder circuit, if for detecting that described power input voltage is more than or equal to predeterminated voltage, then start described bleeder circuit access power supply circuits, and close described supply voltage input circlult, to reduce the input voltage inputing to described invariable frequency compressor.
8. system according to claim 7, is characterized in that, described bleeder circuit comprises:
First contactor, is electrically connected with described power supply and described mainboard, accesses described power supply circuits for starting described bleeder circuit when being under closed state;
Divider resistance, connects with described first contactor, for sharing described power input voltage.
9. system according to claim 8, it is characterized in that, if described mainboard is also for detecting that described power input voltage is less than described predeterminated voltage, then start described supply voltage input circlult and access described power supply circuits, make described invariable frequency compressor use described power input voltage to start.
10. system according to claim 9, is characterized in that, described supply voltage input circlult comprises:
Second contactor, is arranged between described power supply and described invariable frequency compressor, for when being under closed state, makes described invariable frequency compressor access described power supply via described second contactor.
11. systems according to claim 10, is characterized in that, described mainboard also for after time delay first preset duration, starts described supply voltage input circlult, and after time delay second preset duration, disconnects described bleeder circuit.
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| CN201510536963.8A CN105134570B (en) | 2015-08-26 | 2015-08-26 | Method and system for controlling starting of fixed frequency compressor |
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| CN105134570B CN105134570B (en) | 2017-05-10 |
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| CN105134570B (en) | 2017-05-10 |
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