CN211630107U - Drive control circuit, circuit board and air conditioner - Google Patents
Drive control circuit, circuit board and air conditioner Download PDFInfo
- Publication number
- CN211630107U CN211630107U CN202020572211.3U CN202020572211U CN211630107U CN 211630107 U CN211630107 U CN 211630107U CN 202020572211 U CN202020572211 U CN 202020572211U CN 211630107 U CN211630107 U CN 211630107U
- Authority
- CN
- China
- Prior art keywords
- power supply
- module
- switch
- switching tube
- terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Inverter Devices (AREA)
Abstract
The utility model discloses a drive control circuit, circuit board and air conditioner, drive control circuit includes switch module, first contravariant module, second contravariant module, first DC power module and second DC power module, through setting up switch module, can realize switching over the connected mode of three-phase winding according to the different operating frequency of motor, promote the operating efficiency of motor; through setting up first DC power module and second DC power module, can provide different supply voltage for first contravariant module and second contravariant module respectively, first contravariant module and second contravariant module provide corresponding driving voltage to three-phase winding when respectively under three-phase winding is in different connection state again for all can obtain suitable driving voltage when three-phase winding is in different connection state, in order to realize that the motor can the high-efficient operation at different connection mode homoenergetic.
Description
Technical Field
The utility model relates to a motor drive technical field, in particular to drive control circuit, circuit board and air conditioner.
Background
The variable frequency compressor of the existing variable frequency air conditioner mostly adopts a permanent magnet motor as a driving motor, and is influenced by the operation requirement of the variable frequency air conditioner, a three-phase winding of the permanent magnet motor generally needs to be switched between star connection and delta connection, and when the variable frequency compressor is in different connection modes, the operation frequencies of the motor are different, so that the driving voltages required by the three-phase winding are also different. However, the dc bus voltage cannot simultaneously satisfy the driving voltage requirements of the motor when the motor operates in different connection modes, and the motor cannot efficiently operate in different connection modes.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a drive control circuit, circuit board and air conditioner, can provide different motor wiring mode and motor drive voltage to make the motor work at different operating frequency homoenergetic high-efficiently.
According to the utility model discloses a drive control circuit of first aspect embodiment for the drive has three-phase winding motor, every looks the first three-phase play group, every looks are constituteed to the one end of winding the other end of winding constitutes the second three-phase and goes out the group, drive control circuit includes:
the switch assembly is connected with the second three-phase outlet line group; the switch assembly is closed, and the three-phase winding is switched into star connection; the switch assembly is switched on, and the three-phase winding is switched to be connected with an open winding;
the first inversion module is connected with the first three-phase outgoing line group and used for outputting a first driving voltage to the three-phase windings in a star connection state and a winding opening state;
the second inversion module is connected with the second three-phase outgoing line group and used for outputting a second driving voltage to the three-phase winding in the open winding connection state;
the first direct current power supply module is connected with the first inversion module and used for providing a first power supply voltage for the first inversion module;
and the second direct current power supply module is connected with the second inversion module and used for providing a second power supply voltage for the second inversion module.
According to the utility model discloses drive control circuit has following beneficial effect at least: by arranging the switch assembly, the connection mode of the three-phase winding can be switched according to different running frequencies of the motor, and the running efficiency of the motor is improved; through setting up first DC power module and second DC power module, can provide different supply voltage for first contravariant module and second contravariant module respectively, first contravariant module and second contravariant module provide corresponding driving voltage to three-phase winding when respectively under three-phase winding is in different connection state again for all can obtain suitable driving voltage when three-phase winding is in different connection state, in order to realize that the motor can the high-efficient operation at different connection mode homoenergetic.
According to some embodiments of the present invention, the switch assembly includes a first switch and a second switch, the second three-phase outgoing line group includes a first end, a second end and a third end, the first switch is connected to the first end and the second end respectively, the second switch is connected to the second end and the third end respectively. The switch component is closed, namely the first switch is closed and the second switch is closed, so that the first end, the second end and the third end of the second three-phase outgoing line group are connected in short, and the three-phase winding is in a star connection state; the disconnection of the switch component is that the first switch is disconnected and the second switch is disconnected, the first three-phase wire outlet group of the three-phase winding is connected with the first inversion module, and the second three-phase wire outlet group of the three-phase winding is connected with the second inversion module, so that the three-phase winding is in a winding-open connection state.
According to some embodiments of the present invention, the switch assembly includes a third switch, a fourth switch and a fifth switch, the second three-phase outgoing line group includes a first end, a second end and a third end, one end of the third switch is connected to the first end, one end of the fourth switch is connected to the second end, one end of the fifth switch is connected to the third end, the other end of the third switch, the other end of the fourth switch and the other end of the fifth switch are short-circuited. Similarly, the switch component is closed, that is, the third switch is closed, the fourth switch is closed, and the fifth switch is closed, so that the first end, the second end, and the third end of the second three-phase outgoing line group are short-circuited together, and the three-phase winding is in a star connection state; the disconnection of the switch component is that the disconnection of the third switch, the disconnection of the fourth switch and the disconnection of the fifth switch, the first three-phase outgoing line group of the three-phase winding is connected with the first inversion module, and the second three-phase outgoing line group of the three-phase winding is connected with the second inversion module, so that the three-phase winding is in an open winding connection state.
Wherein the first switch is one of an electromagnetic relay, a solid state relay, a contactor or an electronic switch; the second switch is one of an electromagnetic relay, a solid-state relay, a contactor or an electronic switch; the third switch is one of an electromagnetic relay, a solid-state relay, a contactor or an electronic switch; the fourth switch is one of an electromagnetic relay, a solid-state relay, a contactor or an electronic switch; the fifth switch is one of an electromagnetic relay, a solid-state relay, a contactor or an electronic switch. The electromagnetic relay, the solid-state relay, the contactor or the electronic switch can realize the functions of the first switch, the second switch, the third switch, the fourth switch and the fifth switch, and can be used as the model selection of the first switch, the second switch, the third switch, the fourth switch and the fifth switch.
According to some embodiments of the present invention, a first capacitor is further connected between the first dc power supply module and the first inverter module; and a second capacitor is also connected between the second direct current power supply module and the second inversion module. The first capacitor can filter out the alternating current component of the output voltage of the first direct current power supply module; the second capacitor may filter an alternating current component of the output voltage of the second direct current power supply module.
According to the utility model discloses a some embodiments still include alternating current power supply input and rectifier bridge, the alternating current power supply input is connected the rectifier bridge, the output of rectifier bridge is connected respectively first direct current power module with second direct current power module. The alternating current power supply is input into the rectifier bridge from the alternating current power supply input end, and after rectification, the first direct current power supply module and the second direct current power supply module are respectively supplied with power, and the power supply requirement can be met by adopting one power supply, so that the cost can be saved and the space can be reduced.
According to the utility model discloses a some embodiments, first direct current power module is step-down circuit, second direct current power module is boost circuit. When the motor runs at a low speed, the three-phase winding is in a star-shaped connection state, the voltage reduction circuit supplies power independently, lower more appropriate voltage can be provided for the motor, the running efficiency of the motor is better when the motor runs at the low speed, and the output voltage of the voltage reduction circuit can be adjusted according to the current rotating speed, so that the running efficiency of the motor is further optimized; when the motor runs at a medium-high speed, the three-phase winding is in an open winding connection state, the voltage reduction circuit and the voltage boost circuit supply power together, and higher voltage is provided through the voltage boost circuit, so that the requirement of high-speed running of the motor is met, and the running efficiency of the motor is further optimized.
Further, the voltage reduction circuit is a voltage reduction chopper circuit, and the voltage boost circuit is a voltage boost chopper circuit.
According to some embodiments of the utility model, step-down chopper circuit includes first switch tube, second switch tube and first inductance, the output anodal connection of rectifier bridge the one end of first switch tube, the other end of first switch tube is connected respectively the one end of second switch tube with the one end of first inductance, the other end of first inductance is connected the input of first contravariant module is anodal, the output negative pole of rectifier bridge is connected respectively the other end of second switch tube with the input negative pole of first contravariant module.
According to some embodiments of the utility model, boost chopper includes second inductance, third switch pipe and fourth switch pipe, the output positive pole of rectifier bridge is connected the one end of second inductance, the other end of second inductance is connected respectively the one end of third switch pipe with the one end of fourth switch pipe, the other end of third switch pipe is connected the input positive pole of second contravariant module, the output negative pole of rectifier bridge is connected respectively the other end of fourth switch pipe with the input negative pole of second contravariant module.
According to the utility model discloses a some embodiments, first direct current power module with second direct current power module is AC/DC conversion module, drive control circuit still includes first alternating current power supply incoming end and second alternating current power supply incoming end, first alternating current power supply incoming end is connected first direct current power module, second alternating current power supply incoming end is connected second direct current power module. Through adopting two alternating current power supplies of mutual isolation, supply power respectively for AC/DC conversion module, have better independence, avoid producing mutual interference when controlling.
According to the utility model discloses a some embodiments, first direct current power module with second direct current power module is AC/DC conversion module and mutual isolation, drive control circuit still includes the alternating current power supply incoming end, the alternating current power supply incoming end is connected respectively first direct current power module with second direct current power module. Through sharing an alternating current power supply and adopting two AC/DC conversion modules which are isolated from each other, the first inversion module and the second inversion module can be independently powered, so that the better independence is realized, and the mutual interference generated in the control process is avoided.
According to the utility model discloses a some embodiments, first DC power supply module is AC/DC conversion module, second DC power supply module is DC/DC conversion module, drive control circuit still includes alternating current power supply incoming end and DC power supply incoming end, the alternating current power supply incoming end is connected first DC power supply module, the DC power supply incoming end is connected second DC power supply module. In a similar way, the independence of the power supplies can be realized by adopting two independent power supplies of the direct-current power supply and the alternating-current power supply, and mutual interference generated in control is avoided.
According to some embodiments of the present invention, the output of the first dc power supply module is connected to the input of the second dc power supply module. The first direct current power supply module and the second direct current power supply module form a series-connected common-ground direct current power supply, the voltages of the first direct current power supply module and the second direct current power supply module can be the same or different, and the first inversion module and the second inversion module are respectively used for controlling the operation of the motor.
According to some embodiments of the present invention, the driving control circuit further includes an ac power supply incoming end, the first dc power supply module includes a fifth switch tube, a sixth switch tube, a seventh switch tube, an eighth switch tube, a ninth switch tube and a third inductor, one end of the ac power supply incoming end is connected to one end of the fifth switch tube and one end of the seventh switch tube respectively, the other end of the ac power supply incoming end is connected to one end of the sixth switch tube and one end of the eighth switch tube respectively, the other end of the fifth switch tube and the other end of the sixth switch tube are connected to one end of the third inductor and one end of the ninth switch tube, the other end of the third inductor is used as an output end anode of the first dc power supply module and connected to an input end anode of the first inverter module, the other end of the seventh switch tube is connected to an output end anode of the first inverter module, The other end of the eighth switching tube and the other end of the ninth switching tube are connected together to serve as the cathode of the output end of the first direct current power supply module and connected to the cathode of the input end of the first inversion module; and the second direct-current power supply module is a boost chopper circuit. The first direct-current power supply module adopts a bridgeless Buck circuit consisting of a fifth switching tube, a sixth switching tube, a seventh switching tube, an eighth switching tube, a ninth switching tube and a third inductor to form a stable step-down direct-current power supply; the second direct-current power supply module adopts a boost chopper circuit to form a stable boost direct-current power supply; therefore, two series-connected direct current power supplies with different voltages are formed and respectively supplied to the first inversion module and the second inversion module.
According to the utility model discloses a some embodiments, drive control circuit still includes alternating current power supply incoming end and rectifier bridge, first direct current power module is step-down chopper circuit, second direct current power supply module is step-up chopper circuit, the alternating current power supply incoming end is connected the input of rectifier bridge, the output of rectifier bridge is connected step-down chopper circuit's input, step-down chopper circuit's output is connected step-up chopper circuit's input. The alternating current power supply is converted into direct current through the rectifier bridge, the first direct current power supply module adopts a buck chopper circuit to form a stable buck direct current power supply, and the second direct current power supply module adopts a boost chopper circuit to form a stable boost direct current power supply; therefore, two series-connected direct current power supplies with different voltages are formed and respectively supplied to the first inversion module and the second inversion module.
According to the utility model discloses a some embodiments, drive control circuit still includes the alternating current power supply incoming end, the second direct current power supply module is totem pole PFC circuit, first direct current power supply module is step-down chopper circuit, the alternating current power supply incoming end is connected totem pole PFC circuit's input, totem pole PFC circuit's output is connected step-down chopper circuit's input.
Further, the totem pole PFC circuit includes a fifth inductor, a twelfth switching tube, a thirteenth switching tube, a fourteenth switching tube and a fifteenth switching tube, one end of the ac power supply incoming end is connected to one end of the fifth inductor, the other end of the fifth inductor is connected to one end of the twelfth switching tube and one end of the fourteenth switching tube, the other end of the ac power supply incoming end is connected to one end of the thirteenth switching tube and one end of the fifteenth switching tube, the other end of the twelfth switching tube and the other end of the thirteenth switching tube are connected together to serve as an output end positive electrode of the totem pole PFC circuit, and the other end of the fourteenth switching tube and the other end of the fifteenth switching tube are connected together to serve as an output end negative electrode of the totem pole PFC circuit. The second direct-current power supply module forms a stable boosting direct-current power supply by adopting a totem-pole PFC circuit consisting of a fifth inductor, a twelfth switching tube, a thirteenth switching tube, a fourteenth switching tube and a fifteenth switching tube; the first direct-current power supply module forms a stable step-down direct-current power supply by adopting a step-down chopper circuit; therefore, two series-connected DC power supplies with different voltages and the same ground are formed and are respectively supplied to the first inverter module and the second inverter module. When the motor runs at a low speed, the switch assembly is closed, the motor is in a star connection state, the totem-pole PFC circuit and the buck chopper circuit work normally, the motor is controlled to run through the first inversion module, the output voltage of the buck chopper circuit can be adjusted in real time through the current rotating speed, and the running efficiency of the motor is further optimized. When the motor runs at a high speed, the switch assembly is opened, the motor is in an open winding connection state, the totem-pole PFC circuit and the buck chopper circuit work normally, the two direct-current power supplies control the motor to run through the first inversion module and the second inversion module respectively, and the output voltages of the totem-pole PFC circuit and the buck chopper circuit can be adjusted in real time through the current rotating speed, so that the running efficiency of the motor is further optimized.
According to the utility model discloses circuit board that the embodiment of second aspect provided, include according to the utility model discloses the first aspect embodiment drive control circuit.
According to the utility model discloses circuit board has following beneficial effect at least: by arranging the switch assembly, the connection mode of the three-phase winding can be switched according to different running frequencies of the motor, and the running efficiency of the motor is improved; through setting up first DC power module and second DC power module, can provide different supply voltage for first contravariant module and second contravariant module respectively, first contravariant module and second contravariant module provide corresponding driving voltage to three-phase winding when respectively under three-phase winding is in different connection state again for all can obtain suitable driving voltage when three-phase winding is in different connection state, in order to realize that the motor can the high-efficient operation at different connection mode homoenergetic.
According to the utility model discloses an air conditioner that third aspect embodiment provided, include according to the utility model discloses the circuit board of second aspect embodiment.
According to the utility model discloses air conditioner has following beneficial effect at least: by arranging the switch assembly, the connection mode of the three-phase winding can be switched according to different running frequencies of the motor, and the running efficiency of the motor is improved; through setting up first DC power module and second DC power module, can provide different supply voltage for first contravariant module and second contravariant module respectively, first contravariant module and second contravariant module provide corresponding driving voltage to three-phase winding when respectively under three-phase winding is in different connection state again for all can obtain suitable driving voltage when three-phase winding is in different connection state, in order to realize that the motor can the high-efficient operation at different connection mode homoenergetic.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The present invention will be further described with reference to the accompanying drawings and examples;
fig. 1 is a schematic circuit diagram of a driving control circuit according to a first embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a driving control circuit according to a second embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a driving control circuit according to a third embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a driving control circuit according to a fourth embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a drive control circuit according to a fifth embodiment of the present invention;
fig. 6 is a schematic circuit diagram of a drive control circuit according to a sixth embodiment of the present invention;
fig. 7 is a schematic circuit diagram of a drive control circuit according to a seventh embodiment of the present invention;
fig. 8 is a schematic circuit diagram of a drive control circuit according to an eighth embodiment of the present invention;
fig. 9 is a schematic circuit diagram of a drive control circuit according to a ninth embodiment of the present invention;
fig. 10 is a schematic circuit diagram of a driving control circuit according to a tenth embodiment of the present invention;
fig. 11 is a schematic circuit diagram of a drive control circuit according to an eleventh embodiment of the present invention.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
The variable frequency compressor of the existing variable frequency air conditioner mostly adopts a permanent magnet motor as a driving motor, and is influenced by the operation requirement of the variable frequency air conditioner, a three-phase winding of the permanent magnet motor generally needs to be switched between star connection and delta connection, and when the variable frequency compressor is in different connection modes, the operation frequencies of the motor are different, so that the driving voltages required by the three-phase winding are also different. However, the dc bus voltage cannot simultaneously satisfy the driving voltage requirements of the motor when the motor operates in different connection modes, and the motor cannot efficiently operate in different connection modes.
Based on this, the embodiment of the utility model provides a drive control circuit, circuit board and air conditioner can realize that the motor is in the high-efficient operation of different connected modes homoenergetic.
The embodiments of the present invention will be further explained with reference to the drawings.
Referring to fig. 1, a first embodiment of the present invention provides a driving control circuit for driving an open-winding motor having three-phase windings, where one end of each phase winding forms a first three-phase outgoing line group 100, and the other end of each phase winding forms a second three-phase outgoing line group 200, specifically, the three-phase windings include an a-phase winding, a B-phase winding, and a C-phase winding, where the second three-phase outgoing line group 200 includes a first end 210, a second end 220, and a third end 230, the first end 210 is one end of the a-phase winding, the second end 220 is one end of the B-phase winding, and the third end 230 is one end of the C-phase winding; correspondingly, the first three-phase outgoing line group 100 includes a fourth end 110, a fifth end 120 and a sixth end 130, the fourth end 110 is the other end of the a-phase winding, the fifth end 120 is the other end of the B-phase winding, the sixth end 130 is the other end of the C-phase winding, the driving control circuit includes a switch component KY, a first inversion module, a second inversion module, a first dc power module and a second dc power module, and the switch component KY is connected with the second three-phase outgoing line group 200; the switch component KY is closed, and the three-phase winding is switched into star connection; the switch component KY is turned on, and the three-phase winding is switched to be connected with an open winding; the first inversion module is connected to the first three-phase outgoing line group 100, and is configured to output a first driving voltage to the three-phase windings in the star connection state and the open winding state; the second inversion module is connected to the second three-phase outgoing line group 200, and is configured to output a second driving voltage to the three-phase winding in the open winding connection state; the first direct current power supply module is connected with the first inversion module and used for providing a first power supply voltage for the first inversion module; the second direct current power supply module is connected with the second inversion module and used for providing a second power supply voltage for the second inversion module.
In the drive control circuit of the embodiment, by arranging the switch assembly, the connection mode of the three-phase winding can be switched according to different operating frequencies of the motor, so that the operating efficiency of the motor is improved; through setting up first DC power module and second DC power module, can provide different supply voltage for first contravariant module and second contravariant module respectively, first contravariant module and second contravariant module provide corresponding driving voltage to three-phase winding when respectively under three-phase winding is in different connection state again for all can obtain suitable driving voltage when three-phase winding is in different connection state, in order to realize that the motor can the high-efficient operation at different connection mode homoenergetic. The motor generally runs at low frequency when the three-phase windings are in a star connection state, and the first driving voltage provided by the first inversion module to the three-phase windings is low; when the three-phase winding is in an open winding connection state, the motor generally runs at medium-high frequency, and the first inversion module and the second inversion module supply power to the three-phase winding at the same time. It is understood that the above-mentioned low-frequency operation and middle-high-frequency operation are based on the relative judgment between the two connection states of the motor, and no limitation is made to the specific operation frequency.
In addition, the first inverter module comprises a first bridge arm, a second bridge arm and a third bridge arm which are connected in parallel, the first bridge arm, the second bridge arm and the third bridge arm respectively comprise two power switching tubes which are connected in series, and the power switching tubes adopt MOS devices. The first inverter module is used as a main driving device of the motor, the power switch tube of the first inverter module adopts an MOS device, and compared with an IGBT device, the MOS device has the advantages of small current and lower conduction voltage drop when in light load, and therefore, the first inverter module has the advantage of high operation efficiency.
Referring to fig. 1, in some embodiments of the present invention, the switch assembly KY includes a first switch and a second switch, the first switch is respectively connected to the first end 210 and the second end 220, and the second switch is respectively connected to the second end 220 and the third end 230. The switch component KY is closed, that is, the first switch is closed and the second switch is closed, so that the first end 210, the second end 220 and the third end 230 of the second three-phase outgoing line group 200 are shorted together, so that the three-phase windings are in a star connection state; the switch component KY disconnection is a first switch disconnection and a second switch disconnection, the first three-phase outgoing line group 100 of the three-phase winding is connected with the first inversion module, and the second three-phase outgoing line group 200 of the three-phase winding is connected with the second inversion module, so that the three-phase winding is in an open winding connection state.
It is understood that the switch assembly KY can be implemented in the manner as shown in fig. 2, besides the first switch and the second switch in fig. 1, that is: the switch component KY comprises a third switch, a fourth switch and a fifth switch, wherein one end of the third switch is connected with the first end 210, one end of the fourth switch is connected with the second end 220, one end of the fifth switch is connected with the third end 230, and the other end of the third switch, the other end of the fourth switch and the other end of the fifth switch are in short circuit. Similarly, the switch component KY is closed, that is, the third switch, the fourth switch and the fifth switch are closed, so that the first end 210, the second end 220 and the third end 230 of the second three-phase outgoing line group are shorted together, and the three-phase winding is in a star connection state; the disconnection of the switch component is that the disconnection of the third switch, the disconnection of the fourth switch and the disconnection of the fifth switch, the first three-phase outgoing line group of the three-phase winding is connected with the first inversion module, and the second three-phase outgoing line group of the three-phase winding is connected with the second inversion module, so that the three-phase winding is in an open winding connection state.
The first switch is one of an electromagnetic relay, a solid-state relay, a contactor or an electronic switch; the second switch is one of an electromagnetic relay, a solid-state relay, a contactor or an electronic switch; the third switch is one of an electromagnetic relay, a solid-state relay, a contactor or an electronic switch; the fourth switch is one of an electromagnetic relay, a solid-state relay, a contactor or an electronic switch; the fifth switch is one of an electromagnetic relay, a solid state relay, a contactor, or an electronic switch. The electromagnetic relay, the solid-state relay, the contactor or the electronic switch can realize the functions of the first switch, the second switch, the third switch, the fourth switch and the fifth switch, and can be used as the model selection of the first switch, the second switch, the third switch, the fourth switch and the fifth switch.
It will be appreciated that the first and second switches may be two switches that act in interlock to achieve simultaneous action; or the interlocking is not needed, and only the control signals need to be synchronized. If the first switch and the second switch adopt two switches which are interlocked, the interlocking mode can be mechanical interlocking or electronic interlocking. Similarly, the third switch, the fourth switch and the fifth switch may be three switches acting in an interlocking manner to achieve simultaneous action; or the interlocking is not needed, and only the control signals need to be synchronized. If the third switch, the fourth switch and the fifth switch adopt three switches operated in an interlocking manner, the interlocking manner may be a mechanical interlocking or an electronic interlocking.
Referring to fig. 1, in some embodiments of the present invention, a first capacitor C1 is further connected between the first dc power module and the first inverter module; and a second capacitor C2 is also connected between the second direct current power supply module and the second inverter module. The first capacitor C1 is used as a dc bus capacitor and can filter and remove the ac component of the output voltage of the first dc power supply module; similarly, the second capacitor C2 serves as a dc bus capacitor, and can filter out the ac component of the output voltage of the second dc power supply module.
Referring to fig. 3, in an embodiment of the present invention, the power supply further includes an ac power input end and a rectifier bridge, the ac power input end is connected to the rectifier bridge, and the output end of the rectifier bridge is connected to the first dc power module and the second dc power module respectively. An Alternating Current (AC) power supply is input into the rectifier bridge from the AC power supply input end, and after rectification, the AC power supply supplies power to the first DC power supply module and the second DC power supply module respectively, so that a common-ground DC power supply is formed. Specifically, the first dc power supply module is a step-down circuit, and the second dc power supply module is a step-up circuit. When the motor runs at a low speed, the switch assembly KY is closed, the three-phase winding is in a star-shaped connection state, and the voltage reduction circuit supplies power independently, so that lower more appropriate voltage can be provided for the motor, the running efficiency of the motor is better when the motor runs at the low speed, and the output voltage of the voltage reduction circuit can be regulated according to the current rotating speed, so that the running efficiency of the motor is further optimized; when the motor is in middle and high speed operation, switch assembly KY opens, and three-phase winding is in open winding connected state, and step-down circuit and boost circuit supply power jointly, provide higher voltage through boost circuit to satisfy the demand of the high-speed operation of motor, make the operating efficiency of motor further optimize.
Referring to fig. 4, preferably, the step-down circuit is a step-down chopper circuit, and the step-up circuit is a step-up chopper circuit:
the buck chopper circuit comprises a first switch tube Q1, a second switch tube Q2 and a first inductor L1, the positive electrode of the output end of the rectifier bridge is connected with one end of the first switch tube Q1, the other end of the first switch tube Q1 is respectively connected with one end of the second switch tube Q2 and one end of the first inductor L1, the other end of the first inductor L1 is connected with the positive electrode of the input end of the first inverter module, and the negative electrode of the output end of the rectifier bridge is respectively connected with the other end of the second switch tube Q2 and the negative electrode of the input end of the first inverter module; the boost chopper circuit comprises a second inductor L2, a third switch tube Q3 and a fourth switch tube Q4, the positive electrode of the output end of the rectifier bridge is connected with one end of the second inductor L2, the other end of the second inductor L2 is connected with one end of the third switch tube Q3 and one end of the fourth switch tube Q4 respectively, the other end of the third switch tube Q3 is connected with the positive electrode of the input end of the second inverter module, and the negative electrode of the output end of the rectifier bridge is connected with the other end of the fourth switch tube Q4 and the negative electrode of the input end of the second inverter module respectively.
Referring to fig. 5, in a specific embodiment of the present invention, the first DC power module and the second DC power module are AC/DC conversion modules, the driving control circuit further includes a first AC power supply access terminal and a second AC power supply access terminal, the AC power supply AC1 is connected to the first AC power supply access terminal, the AC power supply AC2 is connected to the second AC power supply access terminal, and the first AC power supply access terminal is connected to the first DC power module, that is, the AC/DC conversion module 1; the second AC power supply access end is connected to the second DC power supply module, that is, the AC/DC conversion module 2. Through adopting two alternating current power supplies of mutual isolation, supply power respectively for AC/DC conversion module, have better independence, avoid producing mutual interference when controlling.
Referring to fig. 6, in a specific embodiment of the present invention, the first DC power module and the second DC power module are AC/DC conversion modules and are isolated from each other, that is, the isolated AC/DC conversion module 1 and the isolated AC/DC conversion module 2 in fig. 6, and the driving control circuit further includes an AC power input end, and the AC power input end is connected to the isolated AC/DC conversion module 1 and the isolated AC/DC conversion module 2, respectively. Through sharing an alternating current power supply AC to adopt two AC/DC conversion modules of mutual isolation, also can realize supplying power alone first contravariant module and second contravariant module, have better independence, avoid producing mutual interference when control.
Referring to fig. 7, in an embodiment of the present invention, the first DC power module is an AC/DC conversion module, the second DC power module is a DC/DC conversion module, the driving control circuit further includes an AC power input terminal and a DC power input terminal, the AC power input terminal is connected to the first DC power module, and the DC power input terminal is connected to the second DC power module. In a similar way, the independence of the power supplies can be realized by adopting two independent power supplies of the direct-current power supply and the alternating-current power supply, and mutual interference generated in control is avoided.
Referring to fig. 8, in an embodiment of the present invention, the output terminal of the first dc power supply module is connected to the input terminal of the second dc power supply module. The first direct current power supply module and the second direct current power supply module form a series-connected common-ground direct current power supply, the voltages of the first direct current power supply module and the second direct current power supply module can be the same or different, and the first inversion module and the second inversion module are respectively used for controlling the operation of the motor.
Referring to fig. 9, in an embodiment of the present invention, the driving control circuit further includes an ac power supply input terminal, the first dc power supply module 300 includes a fifth switching tube Q5, a sixth switching tube Q6, a seventh switching tube Q7, an eighth switching tube Q8, a ninth switching tube Q9 and a third inductor L3, one end of the ac power supply input terminal is respectively connected to one end of the fifth switching tube Q5 and one end of the seventh switching tube Q7, the other end of the ac power supply input terminal is respectively connected to one end of the sixth switching tube Q6 and one end of the eighth switching tube Q8, the other end of the fifth switching tube Q5 and the other end of the sixth switching tube Q6 are both connected to one end of the third inductor L3 and one end of the ninth switching tube Q9, the other end of the third inductor L3 is used as an output terminal anode of the first dc power supply module 300 and is connected to an input terminal anode of the first inverter module, and the other end of the seventh switching tube Q7 is connected to an input terminal anode of the first inverter module, The other end of the eighth switching tube Q8 and the other end of the ninth switching tube Q9 are connected together to serve as the cathode of the output end of the first direct current power supply module 300 and connected to the cathode of the input end of the first inverter module; the second dc power supply module 400 is a boost chopper circuit, and includes a fourth inductor L4, a tenth switching tube Q10 and an eleventh switching tube Q11, the positive electrode of the output end of the first dc power supply module 300 is connected to one end of the fourth inductor L4, the other end of the fourth inductor L4 is connected to one end of the tenth switching tube Q10 and one end of the eleventh switching tube Q11, the other end of the tenth switching tube Q10 is connected to the positive electrode of the input end of the second inverter module 400, and the negative electrode of the output end of the first dc power supply module 300 is connected to the other end of the eleventh switching tube Q11 and the negative electrode of the input end of the second inverter module 400. The first dc power supply module 300 adopts a bridgeless Buck circuit 300 consisting of a fifth switching tube Q5, a sixth switching tube Q6, a seventh switching tube Q7, an eighth switching tube Q8, a ninth switching tube Q9 and a third inductor L3 to form a stable step-down dc power supply; the second dc power supply module 400 forms a stable boost dc power supply by using a boost chopper circuit composed of a fourth inductor L4, a tenth switching tube Q10, and an eleventh switching tube Q11; therefore, two series-connected direct current power supplies with different voltages are formed and respectively supplied to the first inversion module and the second inversion module.
Referring to fig. 10, in an embodiment of the present invention, the driving control circuit further includes an ac power supply access terminal and a rectifier bridge, the first dc power supply module is a step-down chopper circuit 500, the second dc power supply module is a step-up chopper circuit 600, the input terminal of the rectifier bridge is connected to the ac power supply access terminal, the input terminal of the step-down chopper circuit 500 is connected to the output terminal of the rectifier bridge, and the input terminal of the step-up chopper circuit 600 is connected to the output terminal of the step-down chopper circuit 500. An alternating current power supply is converted into direct current through a rectifier bridge, a first direct current power supply module forms a stable step-down direct current power supply by adopting a step-down chopper circuit 500, and a second direct current power supply module forms a stable step-up direct current power supply by adopting a step-up chopper circuit 600; therefore, two series-connected direct current power supplies with different voltages are formed and respectively supplied to the first inversion module and the second inversion module.
Referring to fig. 11, in an embodiment of the present invention, the driving control circuit further includes an ac power supply input terminal, the second dc power supply module 700 is a totem pole PFC circuit, and includes a fifth inductor L5, a twelfth switch Q12, a thirteenth switch Q13, a fourteenth switch Q14 and a fifteenth switch Q15, one end of the ac power supply input terminal is connected to one end of the fifth inductor L5, the other end of the fifth inductor L5 is connected to one end of the twelfth switch Q12 and one end of the fourteenth switch Q14, the other end of the ac power supply input terminal is connected to one end of the thirteenth switch Q13 and one end of the fifteenth switch Q15, the other end of the twelfth switch Q12 and the other end of the thirteenth switch Q13 are connected together as an output terminal anode of the totem pole PFC circuit and connected to an input terminal anode of the second inverter module, the other end of the fourteenth switch Q14 and the other end of the fifteenth switch Q15 are connected together as a cathode of the totem pole PFC circuit and connected to the output terminal of the totem pole PFC circuit The negative electrode of the input end of the second inversion module; the first dc power supply module 800 is a buck chopper circuit, and the output terminal of the second dc power supply module is connected to the first inverter module through the buck chopper circuit. The second direct-current power supply module forms a stable boost direct-current power supply by adopting a totem pole PFC circuit consisting of a fifth inductor L5, a twelfth switching tube Q12, a thirteenth switching tube Q13, a fourteenth switching tube Q14 and a fifteenth switching tube Q15; the first direct-current power supply module forms a stable step-down direct-current power supply by adopting a step-down chopper circuit; therefore, two series-connected DC power supplies with different voltages and the same ground are formed and are respectively supplied to the first inverter module and the second inverter module. When the motor runs at a low speed, the switch assembly KY is closed, the motor is in a star connection state, the totem-pole PFC circuit and the buck chopper circuit work normally, the motor is controlled to run through the first inversion module, the output voltage of the buck chopper circuit can be adjusted in real time through the current rotating speed, and the running efficiency of the motor is further optimized. When the motor runs at a high speed, the switch assembly KY is opened, the motor is in an open winding connection state, the totem-pole PFC circuit and the buck chopper circuit work normally, the two direct-current power supplies control the motor to run through the first inversion module and the second inversion module respectively, the output voltages of the totem-pole PFC circuit and the buck chopper circuit can be adjusted in real time through the current rotating speed, and the running efficiency of the motor is further optimized.
The embodiment of the second aspect of the utility model provides a circuit board is still provided, include according to the utility model discloses the drive control circuit that the embodiment of the first aspect provided. The function and principle of the circuit board of this embodiment are based on the above-mentioned driving control circuit, so the circuit board of this embodiment has the same function and principle as the above-mentioned driving control circuit, and for the sake of brevity, the description is not repeated here.
The utility model discloses a third aspect embodiment still provides an air conditioner, include according to the utility model discloses the circuit board that the embodiment of second aspect provided. The operation and principle of the air conditioner of this embodiment are based on the circuit board, so the air conditioner of this embodiment has the same operation and principle as the circuit board, and for the sake of brevity, the description is not repeated here.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge range of those skilled in the art.
Claims (19)
1. A drive control circuit for driving an open-winding motor having three-phase windings, one end of each of the phases of the windings constituting a first three-phase outgoing line group, and the other end of each of the phases of the windings constituting a second three-phase outgoing line group, the drive control circuit comprising:
the switch assembly is connected with the second three-phase outlet line group; the switch assembly is closed, and the three-phase winding is switched into star connection; the switch assembly is switched on, and the three-phase winding is switched to be connected with an open winding;
the first inversion module is connected with the first three-phase outgoing line group and used for outputting a first driving voltage to the three-phase windings in a star connection state and a winding opening state;
the second inversion module is connected with the second three-phase outgoing line group and used for outputting a second driving voltage to the three-phase winding in the open winding connection state;
the first direct current power supply module is connected with the first inversion module and used for providing a first power supply voltage for the first inversion module;
and the second direct current power supply module is connected with the second inversion module and used for providing a second power supply voltage for the second inversion module.
2. The driving control circuit of claim 1, wherein the switch assembly comprises a first switch and a second switch, the second three-phase outgoing line set comprises a first terminal, a second terminal and a third terminal, the first switch is connected to the first terminal and the second terminal, respectively, and the second switch is connected to the second terminal and the third terminal, respectively.
3. The driving control circuit of claim 1, wherein the switch assembly comprises a third switch, a fourth switch and a fifth switch, the second three-phase outgoing line set comprises a first terminal, a second terminal and a third terminal, one terminal of the third switch is connected to the first terminal, one terminal of the fourth switch is connected to the second terminal, one terminal of the fifth switch is connected to the third terminal, and the other terminal of the third switch, the other terminal of the fourth switch and the other terminal of the fifth switch are shorted.
4. The driving control circuit according to claim 1, wherein a first capacitor is further connected between the first dc power supply module and the first inverter module; and a second capacitor is also connected between the second direct current power supply module and the second inversion module.
5. The driving control circuit according to claim 1, further comprising an ac power input terminal and a rectifier bridge, wherein the ac power input terminal is connected to the rectifier bridge, and an output terminal of the rectifier bridge is connected to the first dc power module and the second dc power module, respectively.
6. The driving control circuit according to claim 5, wherein the first DC power supply module is a step-down circuit, and the second DC power supply module is a step-up circuit.
7. The drive control circuit according to claim 6, wherein the step-down circuit is a step-down chopper circuit, and the step-up circuit is a step-up chopper circuit.
8. The driving control circuit according to claim 7, wherein the buck chopper circuit includes a first switch tube, a second switch tube, and a first inductor, an output anode of the rectifier bridge is connected to one end of the first switch tube, another end of the first switch tube is respectively connected to one end of the second switch tube and one end of the first inductor, another end of the first inductor is connected to an input anode of the first inverter module, and an output cathode of the rectifier bridge is respectively connected to another end of the second switch tube and an input cathode of the first inverter module.
9. The driving control circuit according to claim 7, wherein the boost chopper circuit includes a second inductor, a third switch tube and a fourth switch tube, an output end anode of the rectifier bridge is connected to one end of the second inductor, the other end of the second inductor is respectively connected to one end of the third switch tube and one end of the fourth switch tube, the other end of the third switch tube is connected to an input end anode of the second inverter module, and an output end cathode of the rectifier bridge is respectively connected to the other end of the fourth switch tube and an input end cathode of the second inverter module.
10. The drive control circuit according to claim 1, wherein the first DC power supply module and the second DC power supply module are both AC/DC conversion modules, and the drive control circuit further comprises a first AC power supply input terminal and a second AC power supply input terminal, the first AC power supply input terminal is connected to the first DC power supply module, and the second AC power supply input terminal is connected to the second DC power supply module.
11. The driving control circuit according to claim 1, wherein the first DC power module and the second DC power module are both AC/DC conversion modules and are isolated from each other, and the driving control circuit further comprises an AC power input terminal, and the AC power input terminal is connected to the first DC power module and the second DC power module respectively.
12. The drive control circuit according to claim 1, wherein the first DC power supply module is an AC/DC conversion module, the second DC power supply module is a DC/DC conversion module, and the drive control circuit further comprises an AC power supply input terminal and a DC power supply input terminal, the AC power supply input terminal is connected to the first DC power supply module, and the DC power supply input terminal is connected to the second DC power supply module.
13. The driving control circuit according to claim 1, wherein the output terminal of the first dc power supply module is connected to the input terminal of the second dc power supply module.
14. The driving control circuit according to claim 13, wherein the driving control circuit further comprises an ac power supply input terminal, the first dc power supply module comprises a fifth switching tube, a sixth switching tube, a seventh switching tube, an eighth switching tube, a ninth switching tube and a third inductor, one end of the ac power supply input terminal is connected to one end of the fifth switching tube and one end of the seventh switching tube respectively, the other end of the ac power supply input terminal is connected to one end of the sixth switching tube and one end of the eighth switching tube respectively, the other end of the fifth switching tube and the other end of the sixth switching tube are connected to one end of the third inductor and one end of the ninth switching tube respectively, the other end of the third inductor serves as an output terminal anode of the first dc power supply module, and the other end of the seventh switching tube, The other end of the eighth switching tube and the other end of the ninth switching tube are connected together to serve as the cathode of the output end of the first direct-current power supply module; and the second direct-current power supply module is a boost chopper circuit.
15. The driving control circuit according to claim 13, further comprising an ac power supply input terminal and a rectifier bridge, wherein the first dc power supply module is a buck chopper circuit, the second dc power supply module is a boost chopper circuit, the ac power supply input terminal is connected to an input terminal of the rectifier bridge, an output terminal of the rectifier bridge is connected to an input terminal of the buck chopper circuit, and an output terminal of the buck chopper circuit is connected to an input terminal of the boost chopper circuit.
16. The driving control circuit according to claim 1, further comprising an ac power supply input terminal, wherein the second dc power supply module is a totem-pole PFC circuit, the first dc power supply module is a buck chopper circuit, the ac power supply input terminal is connected to an input terminal of the totem-pole PFC circuit, and an output terminal of the totem-pole PFC circuit is connected to an input terminal of the buck chopper circuit.
17. The driving control circuit as claimed in claim 16, wherein the totem-pole PFC circuit comprises a fifth inductor, a twelfth switching tube, a thirteenth switching tube, a fourteenth switching tube and a fifteenth switching tube, one end of the alternating current power supply access end is connected with one end of the fifth inductor, the other end of the fifth inductor is connected with one end of the twelfth switching tube and one end of the fourteenth switching tube, the other end of the alternating current power supply access end is connected with one end of the thirteenth switching tube and one end of the fifteenth switching tube, the other end of the twelfth switching tube and the other end of the thirteenth switching tube are connected together to be used as the anode of the output end of the totem pole PFC circuit, the other end of the fourteenth switching tube and the other end of the fifteenth switching tube are connected together to serve as the cathode of the output end of the totem-pole PFC circuit.
18. A wiring board characterized by comprising the drive control circuit according to any one of claims 1 to 17.
19. An air conditioner characterized by comprising the wiring board according to claim 18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020572211.3U CN211630107U (en) | 2020-04-16 | 2020-04-16 | Drive control circuit, circuit board and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020572211.3U CN211630107U (en) | 2020-04-16 | 2020-04-16 | Drive control circuit, circuit board and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211630107U true CN211630107U (en) | 2020-10-02 |
Family
ID=72622259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020572211.3U Active CN211630107U (en) | 2020-04-16 | 2020-04-16 | Drive control circuit, circuit board and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211630107U (en) |
-
2020
- 2020-04-16 CN CN202020572211.3U patent/CN211630107U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111434513B (en) | Vehicle and energy conversion device and power system thereof | |
| JP2022552374A (en) | Multi-output multi-bridge power converter | |
| US11664723B2 (en) | Single-phase and three-phase compatible conversion circuit and vehicle-mounted charger | |
| WO2005086335B1 (en) | Variable speed drive for multiple loads | |
| CN112224060B (en) | Vehicle and energy conversion device and power system thereof | |
| CN112224057B (en) | Vehicle and energy conversion device and power system thereof | |
| CN111478642B (en) | Drive control circuit, drive control method, circuit board and air conditioner | |
| CN111355416A (en) | Motor drive control circuit, motor drive method, circuit board and air conditioner | |
| CN110061678A (en) | A kind of electric excitation biconvex electrode electric machine driving charging integration system | |
| WO2021253249A1 (en) | Motor controller of electrical appliance, motor apparatus of electrical appliance, and electrical appliance | |
| CN111355421B (en) | Drive control circuit, drive control method, circuit board and air conditioner | |
| CN209134309U (en) | A kind of three-phase alternating current-direct current buck translation circuit | |
| CN112297894A (en) | Integrated vehicle-mounted charger with wide-range output | |
| CN211630107U (en) | Drive control circuit, circuit board and air conditioner | |
| CN109177748A (en) | Hybrid vehicle transmission | |
| CN111355423A (en) | Drive control circuit, drive control method, circuit board and air conditioner | |
| CN112224051B (en) | Vehicle and energy conversion device and power system thereof | |
| CN115071459B (en) | Control method and equipment for bidirectional vehicle-mounted charger and motor controller integrated equipment | |
| CN213861886U (en) | Integrated vehicle-mounted charger with wide-range output | |
| CN213817625U (en) | Drive control circuit, circuit board and air conditioner | |
| CN211791346U (en) | Motor drive control circuit, circuit board and air conditioner | |
| CN112224038B (en) | Energy conversion device, power system and vehicle | |
| CN211630106U (en) | Drive control circuit, circuit board and air conditioner | |
| CN220009477U (en) | Energy conversion device, power system and vehicle | |
| CN211630105U (en) | Drive control circuit, circuit board and air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |