CN209627230U - Drive control circuit, air-conditioner controller and air conditioner - Google Patents
Drive control circuit, air-conditioner controller and air conditioner Download PDFInfo
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- CN209627230U CN209627230U CN201920774370.9U CN201920774370U CN209627230U CN 209627230 U CN209627230 U CN 209627230U CN 201920774370 U CN201920774370 U CN 201920774370U CN 209627230 U CN209627230 U CN 209627230U
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Abstract
The utility model proposes a kind of drive control circuits and a kind of air conditioner.Wherein, drive control circuit includes: inverter bridge, and inverter bridge is used for drive control load running, inverter bridge accesses between high voltage bus and low-voltage bus bar, reactor, for absorbing the surging signal generated during drive control circuit driving load running, reactor is accessed between power grid and load；Bus capacitor, bus capacitor power on required starting voltage for providing load, and bus capacitor is also used to absorb surging signal, and bus capacitor accesses in the two buss lines of inverter bridge input side；First capacitive element, the first capacitive element are used to absorb the surging signal on high voltage bus；First resistance element, the first resistance element is for limiting the power supply signal for flowing to the first capacitive element, and the first capacitive element and the series connection access of the first resistance element are between high voltage bus and low-voltage bus bar.By the way that the first capacitive element is arranged, realizes the control to surging signal, improve the reliability of circuit.
Description
This application claims on 01 16th, 2019 submission Patent Office of the People's Republic of China, application No. is 201920080607.3, it is practical
New Name is the priority of the Chinese patent application of " drive control circuit, air-conditioner controller and air conditioner ", entire contents
It is hereby incorporated by reference in the application.
Technical field
The utility model relates to field of circuit technology, in particular to a kind of drive control circuit and a kind of air conditioner.
Background technique
Such as compressor, motor, engine threephase load equipment use AC-DC-exchange topological structure, specifically,
AC-DC-exchange topological structure is as shown in Figure 1, comprising: AC power supply module, power filtering module, rectification module, filtering
Module, inverter module and load.
Power frequency component after needing to filter smooth stream due to filter module, so often being made using the electrolytic capacitor of larger capacity
For main filter element.However, the use of electrolytic capacitor will cause THD (the Total Harmonic of input AC electric current
Distortion, total harmonic distortion) increase, and the service life shorter ultimate life for influencing controller of itself, furthermore electrolytic capacitor
Fever reduce controller efficiency.
With the promotion of cost and reliability requirement, electrolytic capacitor capacity reduction even no electrolytic capacitor control program is gradually
It is mature.For no electrolytic capacitor control program, electrolytic capacitor is generally replaced using a thin-film capacitor compared with low capacity.Due to mother
The reduction of line capacitance capacity is deteriorated for the absorbability of surge, and defect is mainly reflected in following two aspect:
One, thin-film capacitor or small electric solution capacitor are limited for surge absoption, lead to the first device of the excessively high damage of busbar voltage
Part.
Two, thin-film capacitor or small electric solution capacitor are limited for surge absoption, if input wave when model machine operates normally
Voltage is gushed, leads to busbar voltage moment acute variation, influences control stability.
Utility model content
The utility model aims to solve at least one of technical problems existing in the prior art or related technologies.
For this purpose, the utility model first aspect is to propose a kind of drive control circuit.
The second aspect of the utility model is to propose a kind of air conditioner.
In view of this, first aspect according to the present utility model, proposes a kind of drive control circuit, comprising: inversion
Bridge, the inverter bridge are used for drive control load running, and the inverter bridge access is between high voltage bus and low-voltage bus bar；Reactance
Device drives the surging signal generated during the load running for absorbing the drive control circuit, and the reactor connects
Enter between power grid and the load；Bus capacitor, the bus capacitor are used to provide the described load and power on required starting electricity
Pressure, the bus capacitor are also used to absorb the surging signal, and the bus capacitor access is in the mother of the inverter bridge input side
First capacitive element in line route, the first capacitive element are used to absorb the surging signal on high voltage bus；First resistance element, the
One resistance element is for limiting the power supply signal for flowing to the first capacitive element, the first capacitive element and the first resistance element series connection
Enter between high voltage bus and low-voltage bus bar.
The drive control circuit of embodiment according to the present utility model, drive control circuit include: inverter bridge, bus electricity
Appearance, reactor, the first capacitive element and the first resistance element, wherein inverter bridge drive control load running, such as: control motor fortune
Row, since the capacitance of bus capacitor is lower, the surging signal formed on high voltage bus, which is unable to ensure, to be fully absorbed.Setting
Reactor combined with the bus capacitor compared with low capacity, determine the fixed resonant frequency of circuitWherein L is reactor
Inductance value, C are the capacitances of bus capacitor, prevent from causing resonance frequency to be not fixed due to distributed inductance capacitance parameter so as to cause being
System wild effect.Meanwhile first the setting of resistance element avoid powered on moment or absorb to charge electricity during surge energy
Component damage caused by stream or absorption electric current are excessive improves the reliability that the first capacitive element absorbs surging signal.
The drive control circuit of above-described embodiment according to the present utility model can also have following technical characteristic:
In the above-mentioned technical solutions, further, further includes: one-way conduction element is inhaled for regulating and controlling the first capacitive element
The process of the surging signal on high voltage bus is received, one-way conduction element is connected with the first capacitive element to be accessed in high voltage bus and low
It presses between bus, the one-way conduction element conductive, first capacitive element absorbs the surging signal, the one-way conduction
Element cut-off, first capacitive element stop absorbing the surging signal.
In the technical scheme, by the way that one-way conduction element is arranged, only in the case where one-way conduction element meets turn-on condition,
The surging signal on the first capacitive element absorption high voltage bus could be passed through, and then improve the use longevity of the first capacitive element
Life, improves the reliability of drive control circuit, wherein one-way conduction element is the element with one-way conduction characteristic, such as
Diode etc..
In any of the above-described technical solution, further, further includes: the second resistance element, the second resistance element is for releasing
The surging signal in the first capacitive element is put, the second resistance element is in parallel with the first capacitive element.
In the technical scheme, after the surging signal that the first capacitive element absorbs on high voltage bus, setting second is utilized
Resistance element discharges the surging signal in the first capacitive element, and the setting of the second resistance element improves drive control circuit
Reliability.
In any of the above-described technical solution, further, further includes: the second capacitive element, for absorbing high voltage bus
Surging signal, the second capacitive element connects with the first capacitive element.
In the technical scheme, when the voltage of high voltage bus is larger, second is connected on the basis of the first capacitive element
Capacitive element, to improve the absorbability of the surging signal of high voltage bus.
In any of the above-described technical solution, further, further includes: third resistance element, third resistance element is for releasing
The surging signal in the second capacitive element is put, third resistance element is in parallel with the second capacitive element.
In the technical scheme, in the case where the second capacitive element is arranged, by the way that third resistance element and second is arranged
Resistance element is used cooperatively, the voltage of the first capacitive element of Lai Pingheng and the second capacitive element both ends, while third resistance element
It is also used to discharge the surging signal on the second capacitive element, to improve the reliability of drive control circuit.
In any of the above-described technical solution, further, further includes: switch element, switching elements conductive, first resistance
Property element limit the power supply signal, the switch element cut-off releases first resistance element to the power supply signal
Limitation or switch element cut-off, first resistance element limit the power supply signal, the switching elements conductive, solution
Limitation except first resistance element to the power supply signal, switch element are in parallel with the first resistance element.
In the technical scheme, in the both ends of a first resistance element switch element in parallel, then forming one has
The resistance element of characteristic of switch, when drive control circuit powers on, switch element is in an off state, the first resistance element and mother
Line capacitance absorbs the surging signal from Alternating Current Power Supply side, in the case where the electric current on high voltage bus is not very big, switch
Element closure, and then reduce the first resistance element to load running when capacitive element absorb surge energy metering function.
In any of the above-described technical solution, further, the first resistance element is specifically included: concatenated 4th resistance element
With the 5th resistance element；Whether switch element is configured as the 4th resistance element of control or the 5th resistance element to the first capacitive member
Part carries out current limliting, and switch element is in parallel with the 4th resistance element or the 5th resistance element.
In the technical scheme, the first resistance element specifically includes: concatenated 4th resistance element and the 5th resistance element,
And be configured as control the 4th resistance element or the 5th resistance element whether to the first capacitive element carry out current limliting switch member
Part, when drive control circuit powers on, switch element is in an off state, the 4th resistance element, the 5th resistance element and bus
Capacitor absorbs the surging signal from Alternating Current Power Supply side, in the case where the electric current on high voltage bus is not very big, switch member
Part closure, and then the 4th resistance element or the 5th resistance element are carried out short circuit specifically in switching elements conductive, and is opened
The 4th resistance element for closing element in parallel is short-circuited, and the 5th resistance element plays metering function at this time, or leads in switch element
When logical, fiveth resistance element in parallel with switch element is short-circuited, and the 4th resistance element plays metering function at this time.
In any of the above-described technical solution, further, it is connected in the first end of the first resistance element with high voltage bus,
The case where second end of first resistance element is connected by the first capacitive element and/or the second capacitive element with low-voltage bus bar
Under, switch element includes any of the following: AC relay, DC relay.
In any of the above-described technical solution, further, pass through the first capacitive element in the first end of the first resistance element
And/or second capacitive element be connected with high voltage bus, the case where second end of the first resistance element is connected with low-voltage bus bar
Under, switch element includes any of the following: power switch, AC relay, DC relay.
In the technical scheme, it is connected in the first end of the first resistance element with high voltage bus, the first resistance element
In the case that second end is connected by the first capacitive element and/or the second capacitive element with low-voltage bus bar, it is based on switch element
Pressure resistance and stability, may be selected AC relay, DC relay, and the first end of the first resistance element pass through first
It is connected by breakover element with high voltage bus after capacitive element and/or the second capacitive element, the first end of the first resistance element
In the case where being connected with low-voltage bus bar, due to via the first capacitive element and/or the second capacitive element ability and switch element phase
Connection, therefore it is connected to the current reduction of switch element, therefore power switch, AC relay, direct current can be selected in switch element
Relay etc..
In any of the above-described technical solution, further, the drive control circuit further include: control circuit, and it is described
One-way conduction element is connected, and the control circuit controls institute for detecting the power supply signal, and according to the power supply signal
State one-way conduction element conductive or cut-off；Wherein, the power supply signal includes bus voltage signal and ac voltage signal.
In this embodiment, the power supply signal that drive control circuit is detected by control circuit, controls according to power supply signal
One-way conduction element conductive or cut-off, and then capacitive element is controlled to the absorption process of surging signal.Wherein, power supply signal packet
Include bus voltage signal and ac voltage signal.
Specifically, ac voltage signal by rectification circuit handle be bus voltage signal, bus voltage signal with exchange
Voltage signal can be used as the decision condition of control one-way conduction element conductive or cut-off.
In any of the above-described technical solution, further, bus capacitor is thin-film capacitor.
The second aspect according to the present utility model proposes a kind of air conditioner, comprising: motor；And it is such as any of the above-described
Drive control circuit described in technical solution, the signal input part of the motor are connected to the drive control circuit, the drive
The driving signal of dynamic control circuit output is for driving the motor operation.Therefore the air conditioner has any of the above-described technical solution
Whole beneficial effects of the drive control circuit, details are not described herein.
The additional aspect and advantage of the utility model will become obviously in following description section, or practical new by this
The practice of type is recognized.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 shows AC-DC-exchange topological structure in the prior art；
Fig. 2 shows the drive control circuit schematic diagrames of one embodiment of the utility model；
Fig. 3 shows the drive control circuit schematic diagram of another embodiment of the utility model；
Fig. 4 shows the drive control circuit schematic diagram of another embodiment of the utility model；
Fig. 5 shows the drive control circuit schematic diagram of another embodiment of the utility model；
Fig. 6 shows the drive control circuit schematic diagram of another embodiment of the utility model；
Fig. 7 shows the drive control circuit schematic diagram of another embodiment of the utility model；
Fig. 8 shows the drive control circuit schematic diagram of another embodiment of the utility model；
Fig. 9 shows the drive control circuit schematic diagram of another embodiment of the utility model.
Wherein, the corresponding relationship between appended drawing reference and component names of the Fig. 2 into Fig. 9 are as follows:
102 inverter bridges, 104 switch elements, 106 rectification circuits.
Specific embodiment
In order to be more clearly understood that the above-mentioned aspects, features and advantages of the utility model, with reference to the accompanying drawing and have
The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be combined with each other.
Many details are explained in the following description in order to fully understand the utility model, still, this is practical
Novel to be implemented using other than the one described here other modes, therefore, the protection scope of the utility model is simultaneously
It is not limited to the limitation of following public specific embodiment.
The embodiment of the utility model first aspect proposes a kind of drive control circuit, as shown in Figures 2 and 3, driving control
Circuit processed includes: inverter bridge 102, and the inverter bridge 102 is used for drive control load running, and the access of inverter bridge 102 is in height
It presses between bus and low-voltage bus bar；Reactor Ldc, for absorbing during the drive control circuit drives the load running
The surging signal of generation, the reactor Ldc access is between power grid and the load；Bus capacitor C1, the bus capacitor C1
It is used to provide the described load and powers on required starting voltage, the bus capacitor C1It is also used to absorb the surging signal, it is described
Bus capacitor C1It accesses in the two buss lines of 102 input side of inverter bridge；First capacitive element C2, the first capacitive element C2
For absorbing the surging signal on high voltage bus；First resistance element R1, the first resistance element R1The first capacitive is flowed to for limiting
Element C2Power supply signal, the first capacitive element C2With the first resistance element R1Series connection access in high voltage bus and low-voltage bus bar it
Between.
The drive control circuit of embodiment according to the present utility model, wherein drive control circuit include: inverter bridge 102,
Bus capacitor C1, reactor Ldc, the first capacitive element C2With the first resistance element R1, wherein inverter bridge 102 is exported to motor and is driven
Dynamic signal, controls motor operation, due to bus capacitor C1Capacitance it is lower, therefore the surging signal formed on high voltage bus without
Method ensures to fully absorb, the reactor Ldc of the setting and bus capacitor C compared with low capacity1Combination determines the fixation resonance frequency of circuit
Rate prevents from causing resonance frequency to be not fixed so as to cause system wild effect due to distributed inductance capacitance parameter.Meanwhile first
Resistance element R1Setting avoid powered on moment or absorb during surge energy charging current or absorb that electric current is excessive causes
Component damage, improve the first capacitive element C2Absorb the reliability of surging signal.
In the utility model one embodiment, as shown in Fig. 2, drive control circuit further include: one-way conduction element D1,
For regulating and controlling the first capacitive element C2Absorb the process of the surging signal on high voltage bus, one-way conduction element D1With the first capacitive
Element C2Series connection access is between high voltage bus and low-voltage bus bar, one-way conduction element D1Conducting, the first capacitive element C2Absorb wave
Gush signal, one-way conduction element D1Cut-off, the first capacitive element C2Stop absorbing surging signal.
In this embodiment, by the way that one-way conduction element D is arranged1, only in one-way conduction element D1Meet turn-on condition
Under, the first capacitive element C could be passed through2The surging signal on high voltage bus is absorbed, and then improves the first capacitive element C2Make
With the service life, the reliability of drive control circuit is improved, specifically, one-way conduction element D1Anode be connected with high voltage bus
It connects, one-way conduction element D1Cathode via the first capacitive element C2It is connected with low-voltage bus bar, wherein one-way conduction element D1
It is the element with one-way conduction characteristic, diode etc..
In the utility model one embodiment, as shown in figure 4, drive control circuit further include: the second resistance element R2,
Second resistance element R2For discharging the first capacitive element C2In surging signal, the second resistance element R2With the first capacitive element
C2It is in parallel.
In this embodiment, in the first capacitive element C2After absorbing the surging signal on high voltage bus, the of setting is utilized
Two resistance element R2To discharge the first capacitive element C2In surging signal, the second resistance element R2Setting improve driving control
The reliability of circuit processed.
In the utility model one embodiment, as shown in figure 4, drive control circuit further include: the second capacitive element C3,
For absorbing the surging signal on high voltage bus, the second capacitive element C3With the first capacitive element C2Series connection.
In this embodiment, when the pressure of high voltage bus is larger, in the first capacitive element C2On the basis of connect second
Capacitive element C3, to improve the absorbability of the surging signal of high voltage bus.
In the utility model one embodiment, as shown in figure 4, drive control circuit further include: third resistance element R3,
Third resistance element R3For discharging the second capacitive element C3In surging signal, third resistance element R3With the second capacitive element
C3It is in parallel.
In this embodiment, the second capacitive element C is being set3In the case where, by the way that third resistance element R is arranged3With second
Resistance element R2It is used cooperatively, the first capacitive element of Lai Pingheng C2With the second capacitive element C3The voltage at both ends, while third is resistive
Element R3It is also used to the second capacitive element C3On surging signal discharged, to improve the reliability of drive control circuit.
In the utility model one embodiment, as shown in figure 5, the first capacitive element C2, the second capacitive element C3, first
Resistance element R1And breakover element D1Series position can be converted.As shown in fig. 7, due to the first resistance element R1With it is low
Pressure bus is connected, in the first capacitive element C2, the second capacitive element C3Voltage assignment system load, the first resistance element R1On
Voltage will increase, and then improve circuit stability.
In the utility model one embodiment, as shown in Figures 6 to 9, drive control circuit further include: switch element
104, switch element 104 is connected, the first resistance element R1The power supply signal is limited, the switch element 104 ends, solution
Except the first resistance element R1Limitation or the switch element 104 to the power supply signal end, and described first resistive yuan
Part R1The power supply signal is limited, the switch element 104 is connected, and releases the first resistance element R1To the power supply signal
Limitation, switch element 104 and the first resistance element R1It is in parallel.
In the technical scheme, in the first resistance element R1A both ends switch element in parallel, then form a tool
There is the resistance element of characteristic of switch, when drive control circuit powers on, switch element is in an off state, the first resistance element R1
With bus capacitor C1The surging signal from Alternating Current Power Supply side is absorbed, the electric current on high voltage bus is not very big situation
Under, switch element closure, and then reduce the first resistance element R1First capacitive element C when to load running2Absorb surge energy
Metering function.
As shown in figure 8, due to the first resistance element R1Be short-circuited, therefore metering function can completely eliminate so that electric current without
Method realizes control, further as shown in figure 9, controlled current flow may be implemented by splitting resistance.
In the utility model one embodiment, as shown in figure 9, the first resistance element R1It specifically includes: the concatenated 4th
Resistance element R11With the 5th resistance element R12；Switch element 104 is configured as the 4th resistance element R of control11Or the 5th resistive yuan
Part R12Whether to the first capacitive element C2Carry out current limliting, switch element 104 and the 4th resistance element R11With the 5th resistance element R12
It is in parallel.
In this embodiment, the first resistance element R1It specifically includes: concatenated 4th resistance element R11With the 5th resistive yuan
Part R12, and it is configured as the 4th resistance element R of control11Or the 5th resistance element R12Whether to the first capacitive element C2It carries out
The switch element 104 of current limliting, when drive control circuit powers on, switch element 104 is in an off state, the 4th resistance element
R11, the 5th resistance element R12With bus capacitor C1The surging signal from Alternating Current Power Supply side is absorbed, electricity on high voltage bus
In the case that stream is not very big, switch element 104 is closed, and then by the 4th resistance element R11Or the 5th resistance element R12It carries out
Short circuit reduces the 4th resistance element R11Or the 5th resistance element R12First capacitive element C when to load running2Absorb surge energy
Metering function.
In the utility model one embodiment, in the first resistance element R1First end be connected with high voltage bus,
One resistance element R1Second end pass through the first capacitive element C2And/or the second capacitive element C3The feelings being connected with low-voltage bus bar
Under condition, switch element 104 is included any of the following: AC relay, DC relay；In the first resistance element R1First
End passes through the first capacitive element C2And/or the second capacitive element C3It is connected with high voltage bus, the first resistance element R1Second end
In the case where being connected with low-voltage bus bar, switch element 104 is included any of the following: power switch, AC relay, direct current
Relay.
In the technical scheme, in the first resistance element R1First end be connected with high voltage bus, the first resistance element R1
Second end pass through the first capacitive element C2And/or the second capacitive element C3In the case where being connected with low-voltage bus bar, based on switch
The pressure resistance and stability of element 104, switch element 104 select AC relay, DC relay, and in the first resistance element
R1First end pass through the first capacitive element C2And/or the second capacitive element C3By by breakover element D1It is connected with high voltage bus
It connects, the first resistance element R1First end be connected with low-voltage bus bar in the case where, due to via the first capacitive element C2And/or
Second capacitive element C3Just it is connected with switch element 104, therefore is connected to the current reduction of switch element 104, therefore switchs
Power switch, AC relay, DC relay can be selected in element 104, and available switch element type is more, is convenient for type selecting
Deng.
Specifically, as shown in figure 8, when drive control circuit powers on, switch element 104 disconnect, input power through Lac,
Filter circuit, rectification circuit 106, reactor Ldc give bus capacitor C1Charging, while passing through one-way conduction element D1Hold toward first
Property element C2With the second capacitive element C3Charging, R1Mainly play metering function.
Wherein, one-way conduction element D1It is greater than the diode of 100A for the pressure-resistant big and momentary excess current of selection, Lac refers to reality
Inductor model and input power cord inductance, it includes inductance and resistances.
It is worth noting that Lac and Ldc are in order to which (Electro Magnetic Compatibility, electromagnetism are simultaneous by EMC
Capacitive, refer to equipment or system meet the requirements in its electromagnetic environment operation in its environment any equipment generation can not
The ability for the electromagnetic interference endured) harmonic requirement and exist, if it is there is a harmonic requirement region, there may be Lac on model machine
There may be Ldc, in some instances it may even be possible to which Lac and Ldc coexist.And no harmonic requirement region, Lac and Ldc are not present, but
For high-frequency harmonic problem (if ignoring the problem, Ldc inductance can not used), can make at the position Ldc of circuit topology
With a lesser Ldc2, a small damping resistance in parallel is to improve system stability on this lesser Ldc2.
PTC is the abbreviation of Positive Temperature Coefficient, means positive temperature coefficient, refers to just
Temperature coefficient very big semiconductor material or component.The PTC that usually we mention refers to posive temperature coefficient thermistor.
After exchange inputs certain time (it can be set as set time such as 10s, it is mainly long by charging process time
Short decision), or continued for some time according to the busbar voltage sampled unchanged, then it is assumed that bus capacitor C1And first capacitive
Element C2With the second capacitive element C3Charging complete, no current flows through in absorption circuit at this time, and closure switch element 104 (actually has
It can also be closed when electric current).
Due to the first capacitive element C in surge absorbing circuit2With the second capacitive element C3Mainly pass through the second resistance element R2
With third resistance element R3Slowly electric discharge, so the first capacitive element C2With the second capacitive element C3The voltage stabilization at both ends is in height
The maximum value for pressing busbar voltage flows through lesser electric current (such as C in absorbing circuit2、C3For 820uF, when R2, R3 are 150K, just
The electric current often flowed through in operation absorbing circuit is less than 5A).
Compressor winding, the inductance afterflow of alternating current-direct current side when surge energy is mainly derived from power input, model machine disorderly closedown
And compression maneuver energy；When there are surge voltage, since the thin-film capacitor of low capacity can not absorb excessive energy, high pressure is female
The voltage of line is higher than surge absoption capacitor (the first capacitive element C2With the second capacitive element C3) end voltage when, surge absoption capacitor
Module works, remaining energy flow into bus capacitor C1With surge absoption capacitor (the first capacitive element C2With the second capacitive element
C3) module, due to the first resistance element R at this time1It is switched on and off 104 short circuit of element, therefore surge energy can be inhaled rapidly
It receives.
When power supply disconnection or DC bus-bar voltage are lower than fixed value (can be set to 200V etc.), in switch element
104 be AC relay when, need to judge whether switch element 104 has no current to flow through, switch element 104 be direct current relay
When device, it can disconnect at any time.
By using the first resistance element R1The charging dash current of capacitor when powering on, protection circuit and component are reduced,
First resistance element R simultaneously1It does not wane with the absorption surge capacity with the use of guarantee surge absorbing circuit of switch element 104
Subtract.
In any of the above-described embodiment, further, bus capacitor C1For thin-film capacitor.
In any of the above-described embodiment, further, the drive control circuit further include: control circuit (not shown), with
One-way conduction element D1It is connected, control circuit controls one-way conduction element D for detecting power supply signal, and according to power supply signal1
On or off；Wherein, power supply signal includes bus voltage signal and ac voltage signal.
In this embodiment, the power supply signal that drive control circuit is detected by control circuit 46, according to power supply signal control
One-way conduction element D processed1On or off, and then capacitive element is controlled to the absorption process of surging signal.Wherein, for telecommunications
Number include bus voltage signal and ac voltage signal.Specifically, ac voltage signal is bus by the processing of rectification circuit 106
Voltage signal, bus voltage signal and ac voltage signal can be used as control one-way conduction element D1On or off is sentenced
Fixed condition.
In a specific embodiment of the utility model, the capacitance of thin-film capacitor is lower than default capacitance, wherein default to hold
Value is calculated as follows formula and is calculated:
Wherein, CdcFor preset capacity, LSIt is the total inductance value of equivalent drive control circuit DC side, PLIt is drive control electricity
The bearing power on road, RSFor the all-in resistance of equivalent drive control circuit DC side, vdc0For busbar voltage average value, for example, with 7P
For model machine, C can be determined according to the calculation formuladc840uF is had to be larger than, preset capacity is 840uF or more, is being embodied
When be 1230uF.
The embodiment of the utility model second aspect proposes a kind of air conditioner, comprising: motor；And such as any of the above-described skill
Drive control circuit described in art scheme, the signal input part of motor are connected to drive control circuit, drive control circuit output
Driving signal for driving the motor operation.Therefore the air conditioner has the electricity of drive control described in any of the above-described embodiment
Whole beneficial effects on road, details are not described herein.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least the one of the utility model
In a embodiment or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment
Or example.Moreover, the particular features, structures, materials, or characteristics of description can be in any one or more embodiment or examples
In can be combined in any suitable manner.
The above is only the preferred embodiments of the utility model, are not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (11)
1. a kind of drive control circuit, comprising: inverter bridge, the inverter bridge are used for drive control load running, the inverter bridge
It accesses between high voltage bus and low-voltage bus bar characterized by comprising reactor, for absorbing the drive control circuit
The surging signal generated during the load running is driven, the reactor access is between power grid and the load；Bus
Capacitor, the bus capacitor are used to provide the described load and power on required starting voltage, and the bus capacitor is also used to absorb institute
Surging signal is stated, the bus capacitor access is in the two buss lines of the inverter bridge input side；
First capacitive element, first capacitive element are used to absorb the surging signal on the high voltage bus；
First resistance element, first resistance element are described for limiting the power supply signal for flowing to first capacitive element
First capacitive element and first resistance element series connection access are between the high voltage bus and the low-voltage bus bar.
2. drive control circuit according to claim 1, which is characterized in that further include:
One-way conduction element absorbs the process of the surging signal on the high voltage bus for regulating and controlling first capacitive element,
The one-way conduction element connects access with first capacitive element between the high voltage bus and the low-voltage bus bar, institute
One-way conduction element conductive is stated, first capacitive element absorbs the surging signal, and the one-way conduction element cut-off is described
First capacitive element stops absorbing the surging signal.
3. drive control circuit according to claim 2, which is characterized in that further include:
Second resistance element, second resistance element are used to discharge surging signal in first capacitive element, and described the
Two resistance elements are in parallel with first capacitive element.
4. drive control circuit according to claim 3, which is characterized in that further include:
Second capacitive element, for absorbing the surging signal on the high voltage bus, second capacitive element and described first
Capacitive element series connection.
5. drive control circuit according to claim 4, which is characterized in that further include:
Third resistance element, the third resistance element are used to discharge surging signal in second capacitive element, and described the
Three resistance elements are in parallel with second capacitive element.
6. drive control circuit according to claim 2, which is characterized in that further include:
Switch element, the switching elements conductive, first resistance element limit the power supply signal, and the switch element is cut
Only, it releases first resistance element to end the limitation of the power supply signal or the switch element, described first resistive yuan
Part limits the power supply signal, and the switching elements conductive releases limitation of first resistance element to the power supply signal,
The switch element is in parallel with first resistance element.
7. drive control circuit according to claim 6, which is characterized in that
First resistance element specifically includes: concatenated 4th resistance element and the 5th resistance element；The switch element with
4th resistance element or the 5th resistance element are in parallel.
8. drive control circuit according to claim 7, which is characterized in that
The first end of first resistance element is connected with the high voltage bus, and the second end of first resistance element passes through
First capacitive element and/or the second capacitive element are connected with the low-voltage bus bar,
The switch element includes any of the following: AC relay, DC relay.
9. drive control circuit according to claim 7, which is characterized in that
The first end of first resistance element is female by first capacitive element and/or the second capacitive element and the high pressure
Line is connected, and the second end of first resistance element is connected with the low-voltage bus bar, and the switch element includes following
It anticipates one kind: power switch, AC relay, DC relay.
10. drive control circuit according to claim 7, which is characterized in that the drive control circuit further include:
Control circuit is connected with the one-way conduction element, the control circuit for detecting the power supply signal, and according to
The power supply signal controls the one-way conduction element conductive or cut-off；
Wherein, the power supply signal includes bus voltage signal and ac voltage signal.
11. a kind of air conditioner characterized by comprising
Motor；
Drive control circuit as described in any one of claims 1 to 10, the signal input part of the motor are connected to described
Drive control circuit, the driving signal of the drive control circuit output is for driving the motor operation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920080607 | 2019-01-16 | ||
| CN2019200806073 | 2019-01-16 |
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| CN209627230U true CN209627230U (en) | 2019-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920774370.9U Active CN209627230U (en) | 2019-01-16 | 2019-05-27 | Drive control circuit, air-conditioner controller and air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110988448A (en) * | 2019-12-12 | 2020-04-10 | 厦门市爱维达电子有限公司 | Filtering method applied to UPS bus voltage sampling |
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2019
- 2019-05-27 CN CN201920774370.9U patent/CN209627230U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110988448A (en) * | 2019-12-12 | 2020-04-10 | 厦门市爱维达电子有限公司 | Filtering method applied to UPS bus voltage sampling |
| CN110988448B (en) * | 2019-12-12 | 2022-02-08 | 厦门市爱维达电子有限公司 | Filtering method applied to UPS bus voltage sampling |
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