CN220475476U

CN220475476U - Winding structure and integrated system of variable frequency generator set

Info

Publication number: CN220475476U
Application number: CN202320347999.1U
Authority: CN
Inventors: 何林; 黄开河; 汪尚林
Original assignee: Chongqing Lihua Automatic Technology Co ltd
Current assignee: Chongqing Lihua Automatic Technology Co ltd
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2024-02-09
Anticipated expiration: 2033-02-28

Abstract

The utility model provides a motor winding structure of a variable frequency generator set and an integrated system comprising the winding structure, wherein the motor winding structure comprises a stator winding, more than one first electrode and more than one second electrode are arranged on the stator winding; the second electrode is provided with a separation belt which is divided into a first area and a second area; wherein the first electrode and the first region of the second electrode are formed with a first winding coil; the second region of the second electrode is formed with a second winding coil. In the application, a first winding coil forms three-phase winding output of the motor, and a second winding coil forms auxiliary winding output; the power utilization rate of the three-phase winding of the generator is improved.

Description

Winding structure and integrated system of variable frequency generator set

Technical Field

The utility model relates to the technical field of inverter power supplies, in particular to a winding structure of a variable frequency generator set and an integrated system.

Background

Variable frequency generator sets are also known as inverter generators or inverter power supplies. The variable frequency generator drives a permanent magnet rotor of the generator to rotate at a high speed through gasoline or diesel power to cut magnetic force lines in a stator winding to generate induced potential, outputs alternating voltage, rectifies the alternating current into direct current through a frequency converter, or integrates the direct current into alternating current through an inverter device and then integrates the direct current into alternating current again to output. The electric energy generated by the variable frequency generator set is mainly used as power output, but the electric energy is also used for providing electric power for an igniter system, an inverter control unit, an accelerator control unit and the like in the variable frequency generator set system.

The applicant submits a Chinese patent 202120202664.1 in 2021, named as an integrated system of a variable frequency generator set driven by an internal combustion engine. The patent describes a variable frequency generator set integrated system driven by an internal combustion engine, which comprises a permanent magnet generator and an inverter device, wherein winding coils on a stator of the permanent magnet generator are three-phase winding coils, all winding coils on the stator of the permanent magnet generator are set to be three-phase winding coils without auxiliary power winding coils, the production process of the stator of the permanent magnet generator is simplified, and the power density utilization rate of the permanent magnet generator is improved. However, since the voltage output by the three-phase winding structure is an alternating current high voltage (200V-400V), if the power is supplied to the inverter control unit and the throttle control unit, the AC-DC rectifying and voltage stabilizing unit is firstly required to be converted into a direct current high voltage, and then the direct current high voltage is converted into a direct current low voltage (12V-24V) through the DC-DC converting unit again to supply power to each control unit.

Therefore, how to effectively reduce the cost of the existing variable frequency generator set becomes a problem to be solved by those skilled in the art.

Disclosure of Invention

The utility model aims to solve the technical problems in the prior art and provides a winding structure of a variable frequency generator set, which can reduce the manufacturing cost of the existing variable frequency generator set.

The technical scheme of the utility model is realized by the following measures, and the winding structure of the variable frequency generator set comprises a stator winding, wherein more than one first electrode and more than one second electrode are arranged on the stator winding; the second electrode is provided with a separation belt which is divided into a first area and a second area; wherein the first electrode and the first region of the second electrode are formed with a first winding coil; the second region of the second electrode is formed with a second winding coil.

Further, the separator includes a notch provided on the second electrode, or an insulating tape provided on the second electrode.

Further, the stator winding is provided with three second electrodes or with a number of the second electrodes which is three times, a first winding coil is formed between a first area on each three second electrodes and the first electrode, and a second winding coil is formed between a second area on each three second electrodes.

Further, the stator winding is provided with three second electrodes, or with a number of second electrodes that is a multiple of three, the first area on each three second electrodes and the first electrode are formed with a first winding coil, the second area on each two second electrodes are formed with a third winding coil, and/or the second area on each second electrode is formed with a fourth winding coil.

The application also comprises a variable frequency generator set integrated system, wherein the generator adopting the stator winding is used as power output, and the specific scheme is as follows:

the integrated system of the variable frequency generator set comprises the stator winding, wherein a first winding coil of the stator winding is formed with a first output end, a second winding coil of the stator winding is formed with a second output end, and/or a third winding coil of the stator winding is formed with a third output end, and/or a fourth winding coil of the stator winding is formed with a fourth output end; the inverter device comprises a first AC-DC rectification voltage stabilizing unit and a first DC-DC conversion control unit which are sequentially connected, and a second AC-DC rectification voltage stabilizing unit and a second DC-DC conversion control unit which are sequentially connected; the first AC-DC rectifying and voltage stabilizing unit is connected with the first output end; the second AC-DC rectifying and voltage stabilizing unit is connected with the second output end, and/or is connected with the third output end, and/or is connected with the fourth output end.

Further, the first DC-DC conversion control unit and/or the second DC-DC conversion control unit is/are provided with more than one DC output port.

In specific use, on the basis of the prior art, all the electrodes are divided into first electrodes and more than one second electrode, wherein each second electrode is divided into a first area and a second area, wherein the first area of a single or a plurality of second electrodes forms a first winding coil together with other first electrodes, and the second area of every three second electrodes forms a second winding coil; the first winding coil forms three-phase winding output for power output such as power generation; the second winding coil forms an auxiliary winding output and is used for providing a DC12 module power supply, a CO module working power supply, a generator set battery charging power supply, an igniter system power supply, an inverter control unit power supply, an accelerator control unit power supply and the like; when the auxiliary winding is output, the adopted second AC-DC rectification voltage stabilizing unit converts low-voltage alternating current into low-voltage direct current, and the second DC-DC conversion control unit converts the low-voltage direct current into low-voltage direct current, so that the turn ratio change of two sides of a transformer is small, the DC12V module cost of the variable frequency generator set is further reduced, meanwhile, all first electrodes and the first areas of the second electrodes, the number of which are three times, form a motor three-phase winding to generate power, and the power generation power utilization rate of the motor three-phase winding is improved.

Description of the drawings:

FIG. 1 is a schematic view of a first embodiment of a winding structure of a variable frequency generator set of the present utility model;

FIG. 2 is a schematic diagram of a first embodiment of an output connection of the variable frequency generator set integrated system of the present utility model;

FIG. 3 is a schematic diagram of a second embodiment of a variable frequency genset winding structure of the present utility model;

fig. 4 is a schematic diagram of a second embodiment of an output connection line of the variable frequency generator set integrated system of the present utility model.

Reference numerals:

100 stator windings, 110 first electrode, 120 second electrode, 121 first region, 122 second region, 123 isolation belt, 131 first winding coil, 1311 first output end, 132 second winding coil, 1321 second output end, 133 third winding coil, 1331 third output end, 134 fourth winding coil, 1341 fourth output end, 211 first AC-DC rectification voltage stabilizing unit, 212 first DC-DC conversion control unit, 221 second AC-DC rectification voltage stabilizing unit, 222 second DC-DC conversion control unit.

Detailed Description

In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, unless otherwise specified and defined, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanical or electrical, or may be in communication with each other between two elements, directly or indirectly through intermediaries, as would be understood by those skilled in the art, in view of the specific meaning of the terms described above.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

As shown in fig. 1-3, the present embodiment discloses a winding structure of a variable frequency generator set, which includes a stator winding 100, wherein more than one first electrode 110 and more than one second electrode 120 are disposed on the stator winding 100; the second electrode 120 is provided with a separation belt 123 to divide the second electrode into a first area 121 and a second area 122; wherein the first region 121 of the first and second electrodes 110 and 120 is formed with a first winding coil 131; the second region 122 of the second electrode 120 is formed with a second winding coil 132.

In this embodiment, before winding the stator winding 100, all the electrodes are divided into the first electrode 110 and the second electrode 120, as shown in fig. 1, 18 electrodes out of 21 electrodes of the stator winding 100 are divided into the first electrode 110, and the remaining 3 electrodes are divided into the second electrode 120; in other embodiments, it is also optional to divide 6 or a multiple of 3 of the number of electrodes into the second electrodes 120; the second electrode 120 may be divided into 1 or 2 or a multiple of 2 electrodes as needed. Wherein the second electrode 120 is provided with a separation band 123, the second electrode 120 is divided into a first area 121 on the outer side and a second area 122 on the inner side by the separation band 123, the separation band 123 is provided with corresponding notches on the second electrode 120 or an insulating band is arranged on the second electrode 120, and the first area 121 and the second area 122 are insulated from each other by the separation band 123; as shown in fig. 1, the isolation belt 123 is located in the middle of the second electrode 120, and in other embodiments, the position of the isolation belt 123 in the second electrode 120 may be further adjusted according to the requirement of the output voltage.

As shown in fig. 1, in one embodiment of the present application, when performing coil winding, in which all the first electrodes 110 and the first areas 121 of the three second electrodes 120 are wound to form a first winding coil 131, the first winding coil 131 forms a three-phase winding, and the end of the first winding coil 131 is provided with a first output end 1311, when the generator rotor rotates to cut magnetic lines of force, the first output end 1311 can output high-voltage alternating current for power output such as power generation; the second areas 122 of the three second electrodes 120 are wound with coils to form a second winding coil 132, the second winding coil 132 forms a secondary winding, the end of the second winding coil 132 is provided with a second output end 1321, and when the generator rotor rotates to cut magnetic lines of force, the second output end 1321 can output low-voltage alternating current for providing a DC12 module power supply, a CO module working power supply, a generator set battery charging power supply, an igniter system power supply, an inverter control unit power supply, an accelerator control unit power supply and the like.

In other embodiments, as shown in fig. 3, when the coil winding is performed, in which all the first electrodes 110 and the first areas 121 of the three second electrodes 120 are wound to form the first winding coil 131, the first winding coil 131 forms a three-phase winding, the end of the first winding coil 131 is provided with the first output end 1311, and when the generator rotor rotates to cut magnetic lines of force, the first output end 1311 can output high-voltage alternating current for power output such as power generation; unlike the previous embodiment, the winding of the second areas 122 of the three second electrodes 120 forms a plurality of output terminals, i.e., the winding of the second area 122 of one of the second electrodes 120 forms a fourth winding coil 134, and the end of the fourth winding coil 134 is provided with a fourth output terminal 1341; and winding coils around the second regions 122 of two of the second electrodes 120 to form a third winding coil 133, the third winding coil 133 having a third output end 1331 provided at an end thereof; in other embodiments of the present application, the second regions 122 of the three second electrodes 120 may also be selectively formed into three independent fourth winding coils 134 for output according to the power requirements. The fourth output end 1341 and the third output end 1331 can both output low-voltage alternating current, which is used for providing a DC12 module power supply, a CO module working power supply, a generator set battery charging power supply, an igniter system power supply, an inverter control unit power supply, a throttle control unit power supply and the like.

The output high-voltage alternating current and low-voltage alternating current are respectively rectified and used, wherein power generated by the variable-frequency generator set is mainly used for two aspects, and firstly, the power is used as power to output electric energy for driving an external load; and secondly, the variable frequency generator set is powered by the normal operation of the variable frequency generator set, for example, an inversion control unit, an accelerator control unit, an air door control unit, an igniter control unit, CO power supply, electromagnetic valve power supply, battery charging and the like.

As shown in fig. 2 and 4, in use, the stator structure of the generator formed by the aforementioned winding manner of the electronic winding outputs high-voltage alternating current through the first AC-DC rectifying and voltage stabilizing unit 211 to form high-voltage direct current, and then forms high-voltage alternating current through the DC-AC frequency conversion inversion unit to perform power output, so as to provide electric energy for a load; in addition, in other embodiments, the first AC-DC rectifying and voltage stabilizing unit 211 may be connected to a first DC-DC converting unit, so as to convert high-voltage direct current into low-voltage direct current, so as to provide power for the normal operation of the variable frequency generator set itself. The second output end 1321, the third output end 1331 and/or the fourth output end 1341 are connected with the second AC-DC rectifying and voltage stabilizing unit 221, and after rectifying the low-voltage alternating current into the low-voltage direct current, the low-voltage direct current can be directly output after being formed, and the low-voltage direct current can also be further converted into other low-voltage direct current through the second DC-DC converting unit for output. The first DC-DC conversion control unit and/or the second DC-DC conversion control unit are/is provided with more than one direct current output port for providing power for the running or other liabilities of the variable frequency generator set, including an inversion control unit, an accelerator control unit, an air door control unit, an igniter control unit, CO power supply, electromagnetic valve power supply, storage battery charging and the like.

By adopting the technical scheme, various power required by the operation of the variable frequency generator set can be respectively or independently obtained from the first AC-DC rectification voltage stabilizing unit 211 or the second AC-DC rectification voltage stabilizing unit 221 according to the requirement. For example, as shown in fig. 4, all power required by the operation of the variable frequency generator set is from the first DC-DC conversion unit. In other embodiments, each power required for the operation of the variable frequency generator set itself comes from the second DC-DC conversion unit. And in other embodiments, each power required by the operation of the variable frequency generator set is generated, wherein the electric energy of the inversion control unit, the throttle control unit and the air door control unit is from the first DC-DC conversion unit; the igniter control unit, the CO power supply, the solenoid power supply and the battery charge are from the second DC-DC conversion unit.

The second electrode 120 is divided into a first area 121 and a second area 122, wherein the second area 122 forms a first winding coil 131 as power output after being wound with other electrodes, and the power output is a high-voltage alternating current power supply; compared with the mode that the first winding coil 131 is formed after all the electrodes are wound to form the coils in the prior art to output power, the high-voltage alternating-current power supply is also output, and the structure has little influence on the output power relatively. However, the first area 121 is wound with a coil and then is used as power output, and the output is a low-voltage AC power supply, so that the power output is used for providing power for the operation or other liabilities of the variable-frequency generator set, only the conversion between low-voltage AC and DC or between low-voltage DC and DC is needed, and the conversion between high-voltage and low-voltage is not needed again at the part, so that the turn ratio of the two sides of the transformer in the second AC-DC rectification voltage stabilizing unit 221 and/or the second DC-DC conversion control unit 222 can be greatly reduced, and the cost of the variable-frequency generator set is further reduced.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. The winding structure of the variable frequency generator set is characterized in that: comprises a stator winding (100), wherein more than one first electrode (110) and more than one second electrode (120) are arranged on the stator winding (100); the second electrode (120) is provided with a separation belt (123) which is divided into a first area (121) and a second area (122); wherein the first electrode (110) and the first region (121) of the second electrode (120) are formed with a first winding coil (131); a second region (122) of the second electrode (120) is formed with a second winding coil (132).

2. The variable frequency generator set winding structure of claim 1, wherein: the separator (123) includes a notch provided on the second electrode (120), or an insulating tape provided on the second electrode (120).

3. The variable frequency generator set winding structure according to claim 1 or 2, wherein: three second electrodes (120) are arranged on the stator winding (100); a first winding coil (131) is arranged on the first area (121) and the first electrode (110) on the three second electrodes (120); a second winding coil (132) is formed on a second region (122) of the three second electrodes (120).

4. The variable frequency generator set winding structure according to claim 1 or 2, wherein: three second electrodes (120) are arranged on the stator winding (100), and first winding coils (131) are arranged on first areas (121) and first electrodes (110) on the three second electrodes (120); the third winding coil (133) and the fourth winding coil (134) are formed on the second areas (122) of the three second electrodes (120).

5. A variable frequency generator set integration system comprising the variable frequency generator set winding structure of claim 3, characterized in that: a first winding coil (131) of the stator winding (100) is formed with a first output terminal (1311), and a second winding coil (132) of the stator winding (100) is formed with a second output terminal (1321); the power inverter comprises an inverter device, wherein the inverter device comprises a first AC-DC rectification voltage stabilizing unit (211) and a first DC-DC conversion control unit (212) which are sequentially connected, and the inverter device also comprises a second AC-DC rectification voltage stabilizing unit (221) and a second DC-DC conversion control unit (222) which are sequentially connected; wherein the first AC-DC rectifying and voltage stabilizing unit (211) is connected to the first output terminal (1311); the second AC-DC rectifying and voltage stabilizing unit (221) is connected to the second output terminal (1321).

6. A variable frequency generator set integration system comprising the variable frequency generator set winding structure of claim 3, characterized in that: a first winding coil (131) of the stator winding (100) is formed with a first output end (1311), and a third winding coil (133) of the stator winding (100) is formed with a third output end (1331), and/or a fourth winding coil (134) of the stator winding (100) is formed with a fourth output end; the power inverter further comprises an inverter device, wherein the inverter device comprises a first AC-DC rectification voltage stabilizing unit (211) and a first DC-DC conversion control unit (212) which are connected in sequence; wherein the first AC-DC rectifying and voltage stabilizing unit (211) is connected to the first output terminal (1311); the third output (1331) serves as a winding power supply.

7. A variable frequency generator set integration system according to claim 5 or 6, wherein: the first DC-DC conversion control unit (212) and/or the second DC-DC conversion control unit (222) is/are provided with more than one DC output port.