CN113422559A - Variable open winding motor topology drive circuit - Google Patents
Variable open winding motor topology drive circuit Download PDFInfo
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- CN113422559A CN113422559A CN202110732562.5A CN202110732562A CN113422559A CN 113422559 A CN113422559 A CN 113422559A CN 202110732562 A CN202110732562 A CN 202110732562A CN 113422559 A CN113422559 A CN 113422559A
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- switch tube
- inverter
- winding motor
- phase
- driving circuit
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- 238000004804 winding Methods 0.000 title claims abstract description 44
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000011217 control strategy Methods 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
Abstract
The invention relates to the technical field of motor driving circuits, in particular to a variable open winding motor topology driving circuit. The driving circuit comprises a first inverter and a second inverter, a switching tube is arranged at a direct current bus between the first inverter and the second inverter, and the function switching of a three-phase inverter driving control circuit and an open winding motor driving circuit sharing the direct current bus is realized by controlling the on and off of the switching tube. The invention provides a topological structure driving circuit of a variable open winding motor, which can meet the requirements of minimum switching loss and improvement of direct current voltage utilization rate in different states by matching with different control strategies according to the working conditions of the motor.
Description
Technical Field
The invention relates to the technical field of motor driving circuits, in particular to a variable open winding motor topology driving circuit.
Background
The common direct current bus is mainly applied to a multi-motor transmission system, is used for controlling the high precision of a speed regulating system, and reasonably utilizes and recovers renewable energy generated by the system in the braking process.
The public direct current bus adopts an independent rectifying/feedback device to provide a direct current source with certain power for the system, and the inverter for speed regulation is directly hung on the direct current bus. When the system works in an electric state, the inverter acquires electric energy from the bus; when the system works in a power generation state, energy is directly fed back to the power grid through the bus and the feedback device, so that the aims of saving energy, improving the running reliability of equipment, reducing the maintenance amount of the equipment, reducing the occupied area of the equipment and the like are fulfilled.
Under the prior art, the common open winding motor driving structure is a traditional three-phase inverter driving control structure or a common direct current bus, and for the two driving circuits, the use of the two driving circuits is limited when the working conditions of the motor are different, so that the defects of large switching loss and low direct current voltage utilization rate are caused.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a topological driving circuit of a variable open winding motor, which provides a driving circuit with a topological structure, and can meet the requirements of minimum switching loss and improvement of the utilization rate of direct current voltage in different states by matching with different control strategies according to the working conditions of the motor.
The technical scheme adopted by the invention is as follows:
a variable open winding motor topology driving circuit comprises a first inverter and a second inverter, wherein a bus switch tube is arranged at a direct current bus between the first inverter and the second inverter, and the function switching of a three-phase inverter driving control circuit and an open winding motor driving circuit sharing a direct current bus is realized by controlling the on and off of the bus switch tube.
One side of the first inverter is connected with a direct current source, the other side of the first inverter is connected with the second inverter through an open winding motor winding, a first capacitor is connected between the first inverter and the direct current source in parallel, and a second capacitor is connected between the second inverter and the switch tube in parallel.
The first inverter comprises a first switch tube, a second switch tube, a third switch tube, a fourth switch tube, a fifth switch tube and a sixth switch tube, wherein the first switch tube and the second switch tube are connected in series and then connected in parallel with the third switch tube and the fourth switch tube which are connected in series and the fifth switch tube and the sixth switch tube which are connected in series.
The second inverter comprises a seventh switching tube, an eighth switching tube, a ninth switching tube, a tenth switching tube, an eleventh switching tube and a twelfth switching tube, wherein the seventh switching tube and the eighth switching tube are connected in series and then are connected in parallel with the ninth switching tube and the tenth switching tube which are connected in series and the eleventh switching tube and the twelfth switching tube which are connected in series.
The open-winding motor winding is a three-phase winding, and two sides of each phase of the open-winding motor winding are respectively connected with the U phase, the V phase and the W phase of the first inverter and the Z phase, the Y phase and the X phase of the corresponding second inverter.
The bus switch tube comprises a first bus switch tube and a second bus switch tube, and the first bus switch tube and the second bus switch tube are respectively arranged on the high-voltage side and the low-voltage side of a direct-current bus between the first inverter and the second inverter.
Compared with the traditional common-bus open-winding motor drive, the drive circuit structure provided by the invention has the advantages that two switching tubes are additionally arranged at the position of a direct-current bus, the topology structure can be changed by controlling the on and off of the switching tubes, and the traditional three-phase inverter drive control structure and the open-winding motor drive structure sharing the direct-current bus are formed. The switching mode can reduce the switching loss and reduce the current of the contactor at the direct current bus.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic circuit diagram of a variable open-winding motor topology driving circuit according to the present invention (schematic circuit diagram of a driving circuit at high rotation speed).
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Example one
Fig. 1 is a schematic diagram of a variable open winding motor driving topology of a variable open winding motor topology driving circuit according to the present embodiment.
The embodiment provides a variable open winding motor topology driving circuit, which comprises a first inverter and a second inverter, wherein a bus switch tube is arranged at a direct current bus between the first inverter and the second inverter, and the function switching of a three-phase inverter driving control circuit and an open winding motor driving circuit sharing a direct current bus is realized by controlling the on and off of the bus switch tube.
One side of the first inverter is connected with a direct current source, the other side of the first inverter is connected with the second inverter through an open winding motor winding, a first capacitor C1 is connected between the first inverter and the direct current source in parallel, and a second capacitor C2 is connected between the second inverter and the switch tube in parallel.
The first inverter comprises a first switch tube Q1, a second switch tube Q2, a third switch tube Q3, a fourth switch tube Q4, a fifth switch tube Q5 and a sixth switch tube Q6, wherein the first switch tube Q1 and the second switch tube Q2 are connected in series and then are connected with the third switch tube Q3 and the fourth switch tube Q4 which are connected in series and the fifth switch tube Q5 and the sixth switch tube Q6 which are connected in series in parallel.
The second inverter comprises a seventh switch tube Q7, an eighth switch tube Q8, a ninth switch tube Q9, a tenth switch tube Q10, an eleventh switch tube Q11 and a twelfth switch tube Q12, wherein after the seventh switch tube Q7 and the eighth switch tube Q8 are connected in series, the seventh switch tube Q9 and the tenth switch tube Q10 which are connected in series, and the eleventh switch tube Q11 and the twelfth switch tube Q12 which are connected in series are connected in parallel.
The open-winding motor winding is a three-phase winding, and two sides of each phase of the C, B, A winding are respectively and correspondingly connected with the U phase, the V phase and the W phase of the first inverter and the Z phase, the Y phase and the X phase of the corresponding second inverter.
The bus switch tube comprises a first bus switch tube Q13 and a second bus switch tube Q14, wherein the first bus switch tube Q13 and the second bus switch tube Q14 are respectively arranged on the high-voltage side and the low-voltage side of a direct-current bus between the first inverter and the second inverter.
Vs＝V1-V2 (1)
VSIs the voltage vector at the motor end; v1A voltage vector output for the first inverter; v2Is the voltage vector output by the second inverter.
Under an alpha and beta two-phase static coordinate system, the active power output by the first inverter is P1The active power output by the second inverter is P2The active power Pm flowing to the motor from the inverters on both sides can be respectively expressed as:
wherein: vα1、Vβ1Is as followsVoltage vector of an inverter, Vα2、Vβ2Is the voltage vector of the second inverter, iα、iβAs a current vector ISAnd components on the alpha and beta axes of the stator two-phase stationary coordinate system.
According to the above formula, the active power output by the inverters on both sides can be effectively controlled by controlling the switching tubes of the inverters on both sides and further controlling the output voltage of the inverters on both sides.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A variable open winding motor topology driving circuit comprises a first inverter and a second inverter, and is characterized in that a bus switch tube is arranged at a direct current bus between the first inverter and the second inverter, and the function switching of a three-phase inverter driving control circuit and an open winding motor driving circuit sharing a direct current bus is realized by controlling the on and off of the bus switch tube.
2. The variable open-winding motor topology driving circuit according to claim 1, wherein one side of the first inverter is connected to a direct current source, and the other side is connected to the second inverter through the open-winding motor winding, a first capacitor is connected in parallel between the first inverter and the direct current source, and a second capacitor is connected in parallel between the second inverter and the switching tube.
3. The variable open winding motor topology driving circuit according to claim 2, wherein the first inverter comprises a first switch tube, a second switch tube, a third switch tube, a fourth switch tube, a fifth switch tube and a sixth switch tube, and after the first switch tube and the second switch tube are connected in series, the first switch tube and the second switch tube are connected in parallel with the third switch tube and the fourth switch tube connected in series, and the fifth switch tube and the sixth switch tube connected in series.
4. The variable switch winding motor topology driving circuit according to any one of claim 2, wherein the second inverter comprises a seventh switch tube, an eighth switch tube, a ninth switch tube, a tenth switch tube, an eleventh switch tube and a twelfth switch tube, and after the seventh switch tube and the eighth switch tube are connected in series, the seventh switch tube and the tenth switch tube, and the eleventh switch tube and the twelfth switch tube are connected in series and connected in parallel.
5. The variable open-winding motor topology driving circuit according to claim 2, wherein the open-winding motor winding is a three-phase winding, and two sides of each phase of the open-winding motor winding are respectively connected with the U-phase, the V-phase and the W-phase of the first inverter and the corresponding Z-phase, the Y-phase and the X-phase of the second inverter.
6. The variable open winding motor topology driving circuit according to claim 1, wherein the bus bar switch tube comprises a first bus bar switch tube and a second bus bar switch tube, and the first bus bar switch tube and the second bus bar switch tube are respectively arranged on both sides of a high voltage and a low voltage of a direct current bus bar between the first inverter and the second inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110732562.5A CN113422559A (en) | 2021-06-30 | 2021-06-30 | Variable open winding motor topology drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110732562.5A CN113422559A (en) | 2021-06-30 | 2021-06-30 | Variable open winding motor topology drive circuit |
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| CN113422559A true CN113422559A (en) | 2021-09-21 |
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| CN202110732562.5A Pending CN113422559A (en) | 2021-06-30 | 2021-06-30 | Variable open winding motor topology drive circuit |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040145337A1 (en) * | 2003-01-24 | 2004-07-29 | Toshiba Internatioal Corporation | Inverter drive system |
| US20110198935A1 (en) * | 2010-02-16 | 2011-08-18 | Greenvolts, Inc | Inverter for a three-phase ac photovoltaic system |
| CN103731127A (en) * | 2012-10-16 | 2014-04-16 | 通用电气公司 | Circuit for synchronous control of electronic switches connected in series |
| CN111355424A (en) * | 2020-04-16 | 2020-06-30 | 广东美的制冷设备有限公司 | Drive control circuit, drive control method, circuit board and air conditioner |
-
2021
- 2021-06-30 CN CN202110732562.5A patent/CN113422559A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040145337A1 (en) * | 2003-01-24 | 2004-07-29 | Toshiba Internatioal Corporation | Inverter drive system |
| US20110198935A1 (en) * | 2010-02-16 | 2011-08-18 | Greenvolts, Inc | Inverter for a three-phase ac photovoltaic system |
| CN103731127A (en) * | 2012-10-16 | 2014-04-16 | 通用电气公司 | Circuit for synchronous control of electronic switches connected in series |
| CN111355424A (en) * | 2020-04-16 | 2020-06-30 | 广东美的制冷设备有限公司 | Drive control circuit, drive control method, circuit board and air conditioner |
Non-Patent Citations (1)
| Title |
|---|
| 吴迪, 西安电子科技大学出版社 * |
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Application publication date: 20210921 |
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