CN209627225U - 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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- CN209627225U CN209627225U CN201920773720.XU CN201920773720U CN209627225U CN 209627225 U CN209627225 U CN 209627225U CN 201920773720 U CN201920773720 U CN 201920773720U CN 209627225 U CN209627225 U CN 209627225U
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Abstract
The utility model proposes a kind of drive control circuit, a kind of air-conditioner controller and a kind of air conditioners.Wherein, drive control circuit includes: bus capacitor, bus capacitor powers on required starting voltage for providing load, and bus capacitor is also used to absorb the surging signal generated during drive control circuit driving load running, and bus capacitor accesses in the two buss lines of inverter bridge input side；First capacitive element, for absorbing surging signal；First thermo-sensitive resistor, for limiting the power supply signal for flowing to the first capacitive element and/or bus capacitor, the first thermo-sensitive resistor connects access with the first capacitive element between high voltage bus and low-voltage bus bar；Or first capacitive element be serially connected between high voltage bus and low-voltage bus bar, the first thermo-sensitive resistor is serially connected on high voltage bus.By directly concatenating a capacitive element in high voltage bus and low-voltage bus bar, the surge absoption ability of circuit is improved, and then ensure 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 201920071590.5, invention
The priority of the Chinese patent application of entitled " drive control circuit, air-conditioner controller and air conditioner ", entire contents pass through
Reference is incorporated in the present application.
Technical field
The utility model relates to field of circuit technology, in particular to a kind of drive control circuit, a kind of airconditioning control
Device 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 controller.
It is to propose a kind of air conditioner in terms of the third of the utility model.
In view of this, first aspect according to the present utility model, proposes a kind of drive control circuit, comprising: inversion
Bridge, inverter bridge are used for drive control load running, and inverter bridge accesses between high voltage bus and low-voltage bus bar, comprising: bus electricity
Hold, bus capacitor powers on required starting voltage for providing load, and bus capacitor is also used to absorb drive control circuit driving
The surging signal generated during load running, bus capacitor access in the two buss lines of inverter bridge input side；First capacitive
Element, for absorbing surging signal；First thermo-sensitive resistor, for limiting the confession for flowing to the first capacitive element and/or bus capacitor
Electric signal, the first thermo-sensitive resistor connect access with the first capacitive element between high voltage bus and low-voltage bus bar；Or first capacitive
Element is serially connected between high voltage bus and low-voltage bus bar, and the first thermo-sensitive resistor is serially connected on high voltage bus.
The drive control circuit of embodiment according to the present utility model, wherein drive control circuit includes: inverter bridge, mother
Line capacitance, the first capacitive element and the first thermo-sensitive resistor, wherein inverter bridge drive control load running, control load is (such as: electricity
Machine) operation, since the capacitance of bus capacitor is lower, the surging signal formed on high voltage bus is unable to ensure complete suction
It receives, by directly concatenating first capacitive element in high voltage bus and low-voltage bus bar, absorbs height using the first capacitive element
The surging signal that can not be absorbed on pressure bus, and then improve the surge absoption ability of circuit；Since drive control circuit is
When once powering on or re-powered after powering off, needs to charge to the first capacitive element and bus capacitor, charge at this time
Charging signals are larger, and if current values are larger, biggish electric current can cause to impact to the component in drive control circuit, in turn
Occur overcurrent damage, and by setting one thermo-sensitive resistor, using thermo-sensitive resistor in larger current or voltge surge itself
The characteristics of resistance value becomes larger carries out current limliting to the circuit where thermo-sensitive resistor, and then ensures the reliability of circuit.
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: relay, relay conducting, the limitation of the first thermo-sensitive resistor supply
Electric signal, relay cut-off release limitation of first thermo-sensitive resistor to power supply signal；Or relay cut-off, the first thermo-sensitive resistor
Power supply signal is limited, relay conducting releases limitation of first thermo-sensitive resistor to power supply signal, relay and the first thermo-sensitive resistor
It is in parallel.
In the technical scheme, it in the both ends of a first thermo-sensitive resistor relay in parallel, then forms one and has and open
The thermo-sensitive resistor of feature is closed, when drive control circuit powers on for the first time, relay is in an off state, and bus capacitor absorption comes from
The charging signals of Alternating Current Power Supply side, in the case where high voltage bus electric current is approximately 0, relay closure, and then cancel the first temperature
Metering function of the quick resistance to the first capacitive element and/or bus capacitor.Specifically, in the first thermo-sensitive resistor and the first capacitive member
Part series connection access is between high voltage bus and low-voltage bus bar, and relay is under closed state, due to without metering function,
And then realize the quick absorption of surging signal.
In any of the above-described technical solution, further, further includes: reactor, for absorbing drive control circuit driving
The surging signal generated during load running, reactor access between power grid and load.
In the technical scheme, by being arranged the reactor that is serially connected on high voltage bus, so will from inverter bridge side and
The surging signal of grid side is blocked, so that the surging signal from inverter bridge side and grid side passes through the first capacitive element
And/or bus capacitor absorbs, and then realizes the control to surging signal.
In any of the above-described technical solution, further, further includes: the first resistance element, the first resistance element is for releasing
The surging signal in the first capacitive element is put, the first 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 and the is utilized
First resistance element of one capacitive element parallel connection discharges the surging signal in the first capacitive element, the setting of the first resistance element
Improve the reliability of drive control circuit.
In any of the above-described technical solution, further, further includes: one-way conduction element, for regulating and controlling the first capacitive member
Part absorbs the process of surging signal, and one-way conduction element is connected with the first capacitive element, one-way conduction element conductive, the first capacitive
Element absorbs surging signal, the cut-off of one-way conduction element, and the first capacitive element stops absorbing surging signal.
In the technical scheme, by setting and the concatenated one-way conduction element of the first capacitive element, so that the first capacitive
Element can only absorb the surging signal on high voltage bus, reduce the service life of the first capacitive element, improve service life,
Wherein, one-way conduction element is the element with one-way conduction characteristic, diode etc..
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 pressure 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, wherein the second capacitive element by multiple capacitances it is identical and/
Or the capacitor composition that capacitance is different, it including but not limited to connects and connection type in parallel.
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 second capacitive element is put, the second 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 the second resistance element and first 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 the second 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: third resistance element flows to the first appearance for limiting
Property element and/or bus capacitor power supply signal, the first thermo-sensitive resistor, third resistance element, the first capacitive element series connection access
Between high voltage bus and low-voltage bus bar；Or first capacitive element be serially connected between high voltage bus and low-voltage bus bar, first is temperature sensitive
Resistance and the series connection access of third resistance element are on high voltage bus；Wherein, third resistance element includes current-limiting resistance and the second temperature
One of quick resistance or third resistance element include current-limiting resistance and the second thermo-sensitive resistor, current-limiting resistance and the second temperature sensitive electricity
Resistance series connection.
In the technical scheme, third resistance element is set, and further limitation flows to the first capacitive element and/or bus electricity
The charging signals of appearance avoid the occurrence of component overcurrent and damage, and wherein third resistance element can be arranged with the first thermo-sensitive resistor
, also can be different in same position, the characteristics of itself resistance value becomes larger in larger current or voltge surge using thermo-sensitive resistor pair
Circuit where thermo-sensitive resistor carries out current limliting, and then ensures the reliability of circuit.
Optionally, third resistance element includes one of current-limiting resistance and the second thermo-sensitive resistor or the resistive member of third
Part includes current-limiting resistance and the second thermo-sensitive resistor, wherein current-limiting resistance and the series connection of the second thermo-sensitive resistor, the second thermo-sensitive resistor is just
The thermistor of temperature coefficient.
In any of the above-described technical solution, further, bus capacitor is thin-film capacitor.
In any technical solution of the utility model, further, drive control circuit further include: control circuit, control
Circuit is connected with one-way conduction element, and control circuit controls one-way conduction for detecting power supply signal, and according to power supply signal
Element conductive or cut-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, 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.
It is bus voltage signal, bus voltage signal and ac voltage signal that ac voltage signal is handled by rectification circuit
It can be used as the decision condition of control one-way conduction element conductive or cut-off.
The second aspect according to the present utility model proposes a kind of air-conditioner controller, including such as any of the above-described technical side
Drive control circuit described in case, therefore the air-conditioner controller has the complete of drive control circuit described in any of the above-described embodiment
Portion's beneficial effect, details are not described herein.
In terms of third according to the present utility model, a kind of air conditioner is proposed, 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 embodiment institute
The whole beneficial effects for the drive control circuit stated, 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 a kind of drive control circuit schematic diagrames；
Fig. 3 shows the drive control circuit schematic diagram of one 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 the further 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 rectification circuits, 106 electric source filter circuits, 108 relays.
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 inverter bridge 102 is used for drive control load running, the access of inverter bridge 102 in high voltage bus and
Between low-voltage bus bar, comprising: bus capacitor C1, bus capacitor C1Required starting voltage, bus capacitor are powered on for providing load
C1It is also used to absorb the surging signal generated during drive control circuit driving load running, bus capacitor C1It accesses in inversion
In the two buss lines of 102 input side of bridge；First capacitive element C2, for absorbing surging signal；First thermo-sensitive resistor PTC1, it is used for
Limitation flows to the first capacitive element C2And/or bus capacitor C1Power supply signal, the first thermo-sensitive resistor PTC1With the first capacitive element
C2Series connection access is between high voltage bus and low-voltage bus bar；Or the first capacitive element C2Be serially connected in high voltage bus and low-voltage bus bar it
Between, the first thermo-sensitive resistor PTC1It is serially connected on high voltage bus.
The drive control circuit of embodiment according to the present utility model, wherein drive control circuit include: inverter bridge 102,
Bus capacitor C1, the first capacitive element C2With the first thermo-sensitive resistor PTC1, wherein 102 drive control load running of inverter bridge, control
(such as: motor) operation is loaded, due to bus capacitor C1Capacitance it is lower, therefore the surging signal formed on high voltage bus can not
Ensure to fully absorb, by directly concatenating a first capacitive element C in high voltage bus and low-voltage bus bar2, utilize the first capacitive
Element C2Surging signal is absorbed, and then improves the surge absoption ability of circuit；Since drive control circuit is on first time
When being re-powered after electricity or power-off, need to the first capacitive element C2With bus capacitor C1It charges, the charging charged at this time
Signal is larger, and if current values are larger, biggish electric current can cause to impact to the component in drive control circuit, and then occurs
Overcurrent damage, and by setting one thermo-sensitive resistor, using thermo-sensitive resistor in larger current or voltge surge itself resistance value
The characteristics of becoming larger carries out current limliting to the circuit where thermo-sensitive resistor, and then ensures the reliability of circuit.
In one embodiment of the utility model, drive control circuit includes rectification circuit 104 and power filter electricity
Road 106, the first thermo-sensitive resistor PTC1It is transformed into three groups of (PTC11、PTC12And PTC13It is arranged in rectification circuit 104 and power filter
Between circuit 106, wherein PTC11、PTC12And PTC13A relay in parallel respectively, it is specific as shown in Figure 4.
Optionally, the first thermo-sensitive resistor PTC1 is transformed into any two groups, such as in PTC11、PTC12、PTC13In optional two groups
It is arranged between rectification circuit 104 and electric source filter circuit 106.
In one embodiment of the utility model, as shown in Figures 2 and 3, drive control circuit further include: relay
108, relay 108 is connected, the first thermo-sensitive resistor PTC1Power supply signal is limited, relay 108 ends, and releases the first thermo-sensitive resistor
PTC1Limitation to power supply signal；Or relay 108 ends, the first thermo-sensitive resistor PTC1Power supply signal is limited, relay 108 is led
It is logical, release the first thermo-sensitive resistor PTC1Limitation to power supply signal, relay 108 and the first thermo-sensitive resistor PTC1It is in parallel.
In this embodiment, in the first thermo-sensitive resistor PTC1A both ends relay in parallel, then forming one has
The thermo-sensitive resistor of characteristic of switch, when drive control circuit powers on for the first time, relay is in an off state, and utilizes the first temperature sensitive electricity
Hinder PTC1To flowing to bus capacitor C1And/or the first capacitive element C2Carry out current-limiting protection, bus capacitor C1It absorbs and is supplied from exchange
The surging signal of electric side, in the case where high voltage bus electric current is approximately 0, relay 108 is closed, and then cancels the first temperature sensitive electricity
Hinder PTC1To the first capacitive element C2And/or bus capacitor C1Metering function, specifically, in the first thermo-sensitive resistor PTC1With
One capacitive element C2Series connection access is between high voltage bus and low-voltage bus bar, and relay 108 is under closed state, due to not having
There is metering function, and then realizes the quick absorption of surging signal.
In one embodiment of the utility model, as shown in figure 3, drive control circuit further include: reactor Ldc is used
The surging signal generated during absorbing drive control circuit driving load running, reactor Ldc are accessed in power grid and load
Between.
In this embodiment, by being arranged the reactor Ldc that is serially connected on high voltage bus, so will from inverter bridge side and
The surging signal of grid side is blocked, so that the surging signal from inverter bridge side and grid side passes through the first capacitive element C2
And/or bus capacitor C1It absorbs, and then realizes the control to surging signal.
In one embodiment of the utility model, as shown in figure 3, drive control circuit further include: the first resistance element
R1, the first resistance element is for discharging the first capacitive element C2In surging signal, the first resistance element R1With 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, setting and the is utilized
One capacitive element C2First resistance element R in parallel1To discharge the first capacitive element C2In surging signal, the first resistance element
R1Setting improve the reliability of drive control circuit.
In one embodiment of the utility model, as shown in figure 3, drive control circuit further include: one-way conduction element
D1, for regulating and controlling the first capacitive element C2Absorb the process of surging signal, one-way conduction element D1With the first capacitive element C2String
Connection, one-way conduction element conductive D1, the first capacitive element C2Absorb surging signal, one-way conduction element D1Cut-off, the first capacitive member
Part C2Stop absorbing surging signal.
In this embodiment, pass through setting and the first capacitive element C2Concatenated one-way conduction element D1, so that the first capacitive
Element C2The surging signal on high voltage bus can only be absorbed, the first capacitive element C is reduced2Service life, improve using the longevity
Life, wherein one-way conduction element D1It is the element with one-way conduction characteristic, diode etc., one-way conduction element D1Just
Pole is connected with high voltage bus, one-way conduction element D1Cathode via the first capacitive element C2It is connected with low-voltage bus bar.
In one embodiment of the utility model, as shown in figure 3, 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, wherein the second capacitive element is identical by multiple capacitances
And/or the capacitor composition that capacitance is different, it including but not limited to connects and connection type in parallel.
In one embodiment of the utility model, as shown in figure 3, drive control circuit further include: the second resistance element
R2, the second resistance element R2For discharging the second capacitive element C3In surging signal, the second resistance element R2With the second capacitive member
Part C3It is in parallel.
In this embodiment, the second capacitive element C is being set3In the case where, by the way that the second resistance element R is arranged2With first
Resistance element R1It is used cooperatively, the first capacitive element of Lai Pingheng C2With the second capacitive element C3The voltage at both ends, while second is resistive
Element R2It is also used to the second capacitive element C3On surging signal discharged, to improve the reliability of drive control circuit.
In one embodiment of the utility model, the first capacitive element C2, the first thermo-sensitive resistor PTC1, relay 108,
One-way conduction element D1, the second capacitive element C3Connection relationship it is as shown in Figure 5 and Figure 6.
In one embodiment of the utility model, drive control circuit further include: third resistance element, for limiting stream
To the first capacitive element C2And/or bus capacitor C1Power supply signal, the first thermo-sensitive resistor PTC1, third resistance element, first hold
Property element series connection access between high voltage bus and low-voltage bus bar；Or the first capacitive element C2It is serially connected in high voltage bus and low pressure is female
Between line, the first thermo-sensitive resistor PTC1With the series connection access of third resistance element on high voltage bus；Wherein, third resistance element packet
It includes one of current-limiting resistance and the second thermo-sensitive resistor or third resistance element includes current-limiting resistance and the second thermo-sensitive resistor, limit
Leakage resistance and the series connection of the second thermo-sensitive resistor.
As shown in fig. 7, when third resistance element is only by the second thermo-sensitive resistor PTC2When composition, the first appearance is flowed to for limiting
Property element C2And/or bus capacitor C1Power supply signal, the first thermo-sensitive resistor PTC1, the second thermo-sensitive resistor PTC2With the first capacitive
Element C2Series connection access is between high voltage bus and low-voltage bus bar；Or the first capacitive element C2It is serially connected in high voltage bus and low pressure is female
Between line, the first thermo-sensitive resistor PTC1With the second thermo-sensitive resistor PTC2Series connection access is on high voltage bus.
In this embodiment, while the second thermo-sensitive resistor PTC is set2, further limitation flows to the first capacitive element C2With/
Or bus capacitor C1Power supply signal, avoid the occurrence of component overcurrent and damage, wherein the second thermo-sensitive resistor PTC2It can be with first
Thermo-sensitive resistor PTC1Be arranged in same position, also can be different, using thermo-sensitive resistor in larger current or voltge surge itself
The characteristics of resistance value becomes larger carries out current limliting to the circuit where thermo-sensitive resistor, and then ensures the reliability of circuit.
In one embodiment of the utility model, as shown in Figure 8 and Figure 9, the first capacitive element C2, the first thermo-sensitive resistor
PTC1, the second thermo-sensitive resistor PTC2, relay 108, one-way conduction element D1, the second capacitive element C3Connection relationship.
As shown in Figure 5 and Figure 6, high voltage bus is via one-way conduction element D1With the first capacitive element C2It is connected, in order to drop
The over-voltage of low relay 108 or the risk of overcurrent are not available IBGT instead of relay 108.
Specifically, as shown in fig. 7, when drive control circuit powers on for the first time, relay 108 is disconnected, and input power is through electricity
Anti- device Lac, filter circuit, rectification circuit, reactor Ldc give bus capacitor C1Charging, while passing through one-way conduction element D1Toward the
One capacitive element C2With the second capacitive element C3Charging, PTC2Mainly play metering function.
Wherein, reactor Lac refers to practical Inductor model and input power cord inductance, and it includes inductance and resistance
Amount.
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 closing relay 108 (actually has electricity
It can also be closed when stream).
Due to the first capacitive element C in surge absorbing circuit2With the second capacitive element C3Mainly pass through the first resistance element R1
With the second resistance element R2Slowly 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, R1、R2When for 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 thermo-sensitive resistor PTC at this time1By 108 short circuit of relay, 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 relay 108
When for AC relay, need to judge whether relay 108 has no current to flow through, it, can when relay 108 is DC relay
To disconnect at any time.
In any of the above-described embodiment, when power supply is DC power supply, IGBT (Insulated Gate can be used
Bipolar Transistor, insulated gate bipolar transistor) or MOS (Metal Oxide Semiconductor metal oxidation
Object semiconductor) pipe replaces relay 108.
In the above embodiments of the present invention, the charging that bulky capacitor when powering on is reduced by using thermo-sensitive resistor is impacted
Electric current, protection circuit and component, it is at low cost using being applied in combination for thermo-sensitive resistor and relay.
In any of the above-described embodiment, further, bus capacitor C1For thin-film capacitor.
In the utility model one embodiment, the drive control circuit further include: control circuit (not shown), control electricity
Road and one-way conduction element D1It is connected, control circuit controls one-way conduction for detecting power supply signal, and according to power supply signal
Element D1On 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, controls according to power supply signal
One-way conduction element D1On or off, and then capacitive element is controlled to the absorption process of surging signal.Wherein, power supply signal
Including bus voltage signal and ac voltage signal.Specifically, ac voltage signal is bus electricity by the processing of rectification circuit 104
Signal is pressed, bus voltage signal and ac voltage signal can be used as control one-way conduction element D1The judgement of on or off
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 controller, including such as any of the above-described technical solution
The drive control circuit, therefore the air-conditioner controller has the whole of drive control circuit described in any of the above-described embodiment
Beneficial effect, details are not described herein.
The embodiment of the utility model third 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
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
The surging signal generated during absorbing the drive control circuit and driving the load running, the bus capacitor access in
In the two buss lines of the inverter bridge input side；
First capacitive element, for absorbing the surging signal；
First thermo-sensitive resistor, it is described for limiting the power supply signal for flowing to first capacitive element and/or the bus capacitor
First thermo-sensitive resistor connects access with first capacitive element between the high voltage bus and the low-voltage bus bar；
Or first capacitive element is serially connected between the high voltage bus and the low-voltage bus bar, the first thermo-sensitive resistor string
It connects on the high voltage bus.
2. drive control circuit according to claim 1, which is characterized in that further include:
Relay, the relay conducting, first thermo-sensitive resistor limit the power supply signal, the relay cut-off, solution
Limitation except first thermo-sensitive resistor to the power supply signal；Or
Relay cut-off, first thermo-sensitive resistor limit the power supply signal, the relay conducting, release described the
Limitation of one thermo-sensitive resistor to the power supply signal,
The relay is in parallel with first thermo-sensitive resistor.
3. drive control circuit according to claim 2, which is characterized in that further include:
Reactor drives the surging signal generated during the load running for absorbing the drive control circuit, described
Reactor accesses between power grid and the load.
4. drive control circuit according to claim 1, which is characterized in that further include:
First resistance element, first resistance element are used to discharge surging signal in first capacitive element, and described the
One resistance element is in parallel with first capacitive element.
5. 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, the one-way conduction for regulating and controlling first capacitive element
Element is connected with first capacitive element, the one-way conduction element conductive, and first capacitive element absorbs the surge
Signal, the one-way conduction element cut-off, first capacitive element stop absorbing the surging signal.
6. drive control circuit according to claim 4, 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.
7. drive control circuit according to claim 6, which is characterized in that further include:
Second resistance element, second resistance element are used to discharge surging signal in second capacitive element, and described the
Two resistance elements are in parallel with second capacitive element.
8. drive control circuit according to claim 1, which is characterized in that further include:
Third resistance element, it is described for limiting the power supply signal for flowing to first capacitive element and/or the bus capacitor
First thermo-sensitive resistor, the third resistance element, first capacitive element series connection access are in the high voltage bus and described low
It presses between bus；
Or first capacitive element is serially connected between the high voltage bus and the low-voltage bus bar, first thermo-sensitive resistor and
The third resistance element series connection access is on the high voltage bus；
Wherein, the third resistance element includes one of current-limiting resistance and the second thermo-sensitive resistor or the resistive member of the third
Part includes current-limiting resistance and the second thermo-sensitive resistor, and the current-limiting resistance and second thermo-sensitive resistor are connected.
9. drive control circuit according to claim 5, which is characterized in that the drive control circuit further include:
Control circuit, the control circuit are connected with the one-way conduction element, and the control circuit is for detecting the confession
Electric signal, and the one-way conduction element conductive or cut-off are controlled according to the power supply signal；
Wherein, the power supply signal includes bus voltage signal and ac voltage signal.
10. a kind of air-conditioner controller characterized by comprising
Drive control circuit as claimed in any one of claims 1-9 wherein.
11. a kind of air conditioner characterized by comprising
Motor；
Drive control circuit as claimed in any one of claims 1-9 wherein, the signal input part of the motor are connected to the drive
Dynamic 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 |
|---|---|---|---|
| CN201920071590 | 2019-01-16 | ||
| CN2019200715905 | 2019-01-16 |
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| Publication Number | Publication Date |
|---|---|
| CN209627225U true CN209627225U (en) | 2019-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920773720.XU Active CN209627225U (en) | 2019-01-16 | 2019-05-27 | Drive control circuit, air-conditioner controller and air conditioner |
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| Country | Link |
|---|---|
| CN (1) | CN209627225U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022267220A1 (en) * | 2021-06-22 | 2022-12-29 | 中山大洋电机股份有限公司 | Power supply circuit for motor controller, and motor controller |
-
2019
- 2019-05-27 CN CN201920773720.XU patent/CN209627225U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022267220A1 (en) * | 2021-06-22 | 2022-12-29 | 中山大洋电机股份有限公司 | Power supply circuit for motor controller, and motor controller |
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