CN213341773U - Generator, power generation system and automobile - Google Patents
Generator, power generation system and automobile Download PDFInfo
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- CN213341773U CN213341773U CN202021659561.XU CN202021659561U CN213341773U CN 213341773 U CN213341773 U CN 213341773U CN 202021659561 U CN202021659561 U CN 202021659561U CN 213341773 U CN213341773 U CN 213341773U
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Abstract
The utility model discloses a generator, power generation system and car relates to generator technical field, include: the stator is cylindrical, an alternating current winding and an excitation winding are embedded in the stator, the alternating current winding and the excitation winding are uniformly distributed along the circumferential direction of the stator, and one side of each excitation winding, which is close to the inner periphery of the stator, is provided with a permanent magnet; the rotor is columnar, a plurality of salient poles are uniformly distributed on the periphery of the rotor, and the rotor penetrates through the stator; the stator of the generator is provided with the permanent magnet and the excitation winding, so that the using amount of the permanent magnet is saved, the cost is saved, the output voltage, the output current and the output power can be adjusted by adjusting the size and the direction of the excitation current, and the hardware cost and the control difficulty of the generator controller are reduced.
Description
Technical Field
The utility model belongs to the technical field of the generator, more specifically relates to a generator, power generation system and car.
Background
At present, the extended range electric vehicle is gradually favored by consumers because of long endurance, good driving experience, simple structure and low cost. The power system of the extended range electric vehicle provides rotating speed torque for the driving motor to drive the vehicle, the engine with smaller displacement is matched with a generator to generate electricity, and the generated electricity can be supplied to the driving motor system and can also be stored in a power battery for standby. The simple power system matching improves the endurance mileage, and keeps the advantages of quick response and quick acceleration of the pure electric vehicle. The generator is generally selected from an induction motor and a permanent magnet motor; induction motors are inefficient, so permanent magnet motors are the most of the options. The cost of a common permanent magnet motor is high due to the existence of the permanent magnet, and the magnetomotive force generated by the permanent magnet is fixed and is not easy to adjust, so that a control system is complex and high in cost.
The range-extended electric vehicle has a power battery with smaller capacity than a pure electric vehicle, and a range extender system consisting of an engine, a generator and a generator controller is an auxiliary power source of the range-extended electric vehicle, and the auxiliary power source and the power battery jointly form a driving power supply of the whole vehicle. When the driving motor operates to enable the SOC (residual electric quantity) of the power battery to be reduced to a certain limit value, the vehicle control unit starts the engine to drive the generator to generate electricity, the electricity is rectified into direct current by the generator controller to be supplied to the driving motor system, and the generated electricity can be stored in the power battery for later use. Most generators in a common range extender system are permanent magnet synchronous motors, three-phase alternating current windings are wound on stators, permanent magnets are embedded in rotors, a generator controller realizes current rectification, and software and hardware systems are complex.
The utility model discloses a mixed excitation generator has permanent magnet and direct current excitation winding on the stator, through adjusting direct current exciting current, can match the engine and export the alternating current that satisfies power and voltage requirement at minimum oil consumption during operation, and the rectifier circuit of constituteing by six diodes is the direct current with the alternating current rectification, does not need the electricity generation of any control procedure completion generator. Therefore, the direct current excitation winding provides partial magnetomotive force, the using amount of the permanent magnet is saved, and the current of the direct current excitation winding can be adjusted in size and direction, so that complex weak magnetic control is not needed at high speed, and the software and hardware cost of the generator controller is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a generator, power generation system and car to the not enough that exists among the prior art, having permanent magnet and excitation winding on the stator of this generator, not only having saved the quantity of permanent magnet, practiced thrift the cost, can also adjust the size of output voltage, electric current and power through adjusting exciting current's size and direction, reduced the control degree of difficulty of generator control ware.
In order to achieve the above object, the present invention provides a generator, including:
the stator is cylindrical, an alternating current winding and an excitation winding are embedded in the stator, the alternating current winding and the excitation winding are uniformly distributed along the circumferential direction of the stator, and one side, close to the inner periphery of the stator, of each excitation winding is provided with a permanent magnet;
the rotor is columnar, a plurality of salient poles are uniformly distributed on the periphery of the rotor, and the rotor is arranged inside the stator in a penetrating mode.
Optionally, a plurality of ac winding positioning slots are uniformly formed in the inner periphery of the stator, an ac winding tooth is formed between every two ac winding positioning slots, and the ac winding is wound around the ac winding tooth.
Optionally, an excitation winding positioning slot and a permanent magnet positioning slot are arranged inside the ac winding teeth, and the excitation winding and the permanent magnet are respectively embedded in the excitation winding positioning slot and the permanent magnet positioning slot.
Optionally, the polarities of the ends of the two adjacent permanent magnets close to each other are the same.
Optionally, the polarity of the permanent magnet on the side of the excitation winding close to the inner periphery of the stator is consistent with the direction of the magnetic field generated by the excitation winding.
Optionally, an air gap is provided between the rotor and the stator.
Optionally, the salient poles are uniformly distributed along a circumferential direction of the rotor, and the salient poles form a tooth-shaped structure on a cross section of the rotor.
The utility model also provides a power generation system, include:
the above-described generator;
a rectifier assembly connected with the generator;
and the power battery is connected with the generator through the rectifier assembly.
Optionally, the generator is a three-phase generator, the rectifier assembly includes a first diode, a second diode, a third diode, a fourth diode, a fifth diode, and a sixth diode, a first output end of the generator is connected to an anode of the first diode and a cathode of the second diode, a second output end of the generator is connected to an anode of the third diode and a cathode of the fourth diode, a third output end of the generator is connected to an anode of the fifth diode and a cathode of the sixth diode, cathodes of the first diode, the third diode, and the fifth diode are connected to an anode of the power battery, and anodes of the second diode, the fourth diode, and the sixth diode are connected to a cathode of the power battery.
The utility model also provides an automobile, including foretell power generation system.
The utility model provides a generator, power generation system and car, its beneficial effect lies in:
1. the stator of the generator is provided with the permanent magnet and the excitation winding, and the excitation winding can generate a magnetic field after direct current is introduced into the excitation winding, so that the using amount of the permanent magnet is saved, and the cost is saved;
2. the generator can adjust the magnitude and direction of the current in the excitation winding and adjust the magnitude of the output voltage, the current and the power so as to meet the power generation requirements of the range extender system under different working conditions;
3. the generator can also carry out weak magnetic control at high speed by adjusting the size and the direction of current in the excitation winding, thereby reducing the control difficulty of the generator controller and saving the software and hardware cost of the generator controller.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout the exemplary embodiments of the present invention.
Fig. 1 shows a schematic structural diagram of a generator according to an embodiment of the present invention.
Fig. 2 shows a schematic diagram of a partially enlarged structure of a generator according to an embodiment of the present invention.
Fig. 3 shows a three-phase current waveform diagram of a generator output according to an embodiment of the present invention.
Fig. 4 shows a schematic diagram of a power generation system according to an embodiment of the invention.
Description of reference numerals:
1. a stator; 2. an alternating current winding; 3. an excitation winding; 4. a permanent magnet; 5. a rotor; 6. salient poles; 7. an AC winding positioning slot; 8. an excitation winding positioning groove; 9. a permanent magnet positioning slot; 10. a rectifier assembly; 11. a power battery; 12. a first diode; 13. a second diode; 14. a third diode; 15. a fourth diode; 16. a fifth diode; 17. a sixth diode; 18. a first output terminal; 19. a second output terminal; 20. and a third output terminal.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The utility model provides a generator, include:
the stator is cylindrical, an alternating current winding and an excitation winding are embedded in the stator, the alternating current winding and the excitation winding are uniformly distributed along the circumferential direction of the stator, and one side of each excitation winding, which is close to the inner periphery of the stator, is provided with a permanent magnet;
the rotor is columnar, a plurality of salient poles are uniformly distributed on the periphery of the rotor, and the rotor is arranged inside the stator in a penetrating mode.
Specifically, the rotor rotates in the alternating magnetic field of the stator to generate torque and power, and the magnitude of the output voltage current and the magnitude of the output power can be adjusted by controlling the magnitude and the direction of the exciting current so as to meet the power generation requirement of the range extender system of the automobile. When the field weakening is needed at high speed, the magnetomotive force direction of the excitation winding is opposite to the magnetomotive force of the permanent magnet by adjusting the current magnitude and direction, the synthesized magnetomotive force is reduced, the purpose of high-speed field weakening is achieved, and the control is convenient.
Optionally, a plurality of ac winding positioning slots are uniformly formed in the inner periphery of the stator, an ac winding tooth is formed between every two ac winding positioning slots, and the ac winding is wound around the ac winding tooth.
In particular, the ac winding is capable of generating an alternating magnetic field.
Optionally, an excitation winding positioning slot and a permanent magnet positioning slot are arranged inside the ac winding teeth, and the excitation winding and the permanent magnet are respectively embedded in the excitation winding positioning slot and the permanent magnet positioning slot.
Specifically, the alternating current winding is wound on the outer sides of the excitation winding and the permanent magnet, the excitation winding and the permanent magnet are arranged in pairs in the radial direction of the stator, the excitation winding is closer to the yoke part of the stator, the excitation winding is closer to the periphery of the stator, heat is led out of a shell or a water jacket on the outer side of the stator more easily, and the heat dissipation effect is improved.
Optionally, the polarities of the ends of the two adjacent permanent magnets close to each other are the same.
Alternatively, the polarity of the permanent magnet on the side of the field winding near the inner periphery of the stator coincides with the direction of the magnetic field generated by the field winding.
Specifically, the excitation windings are sequentially arranged according to the positive-negative-positive-negative rule of the current direction, and accordingly the permanent magnets are sequentially arranged according to the polarity direction of the N-S-S-N-N-S rule.
Optionally, an air gap is provided between the rotor and the stator.
Optionally, the salient poles are uniformly distributed along the circumferential direction of the rotor, and the salient poles form a tooth-shaped structure on the section of the rotor.
The utility model also provides a power generation system, include:
the above-described generator;
a rectifier assembly connected with the generator;
and the power battery is connected with the generator through the rectifier assembly.
Optionally, the generator is a three-phase generator, the rectifier component includes a first diode, a second diode, a third diode, a fourth diode, a fifth diode and a sixth diode, a first output end of the generator is connected to an anode of the first diode and a cathode of the second diode, a second output end of the generator is connected to an anode of the third diode and a cathode of the fourth diode, a third output end of the generator is connected to an anode of the fifth diode and a cathode of the sixth diode, cathodes of the first diode, the third diode and the fifth diode are connected to an anode of the power battery, and anodes of the second diode, the fourth diode and the sixth diode are connected to a cathode of the power battery.
The utility model also provides an automobile, including foretell power generation system.
Examples
As shown in fig. 1 to 4, the utility model provides a generator, including:
the stator 1 is cylindrical, an alternating current winding 2 and an excitation winding 3 are embedded in the stator 1, the alternating current winding 2 and the excitation winding 3 are alternately and uniformly distributed along the circumferential direction of the stator 1, and one side of each excitation winding 3, which is close to the inner periphery of the stator 1, is provided with a permanent magnet 4;
the rotor 5 is columnar, a plurality of salient poles 6 are evenly distributed on the periphery of the rotor 5, and the rotor 5 penetrates through the stator 1.
In this embodiment, a plurality of ac winding positioning slots 7 are uniformly formed in the inner periphery of the stator 1, ac winding teeth are formed between every two ac winding positioning slots 7, and the ac winding 2 is wound around the ac winding teeth.
In this embodiment, the ac winding teeth are provided with an excitation winding positioning slot 8 and a permanent magnet positioning slot 9 inside, and the excitation winding 3 and the permanent magnet 4 are respectively embedded in the excitation winding positioning slot 8 and the permanent magnet positioning slot 9.
In the present embodiment, the polarities of the ends of the two adjacent permanent magnets 4 close to each other are the same.
In the present embodiment, the polarity of the permanent magnet 4 on the side of the field winding 3 close to the inner periphery of the stator 1 coincides with the direction of the magnetic field generated by the field winding 3.
In the present embodiment, an air gap is provided between the rotor 5 and the stator 1.
In the present embodiment, the salient poles 6 are uniformly distributed in the circumferential direction of the rotor 5, and the salient poles 6 form a tooth-like structure on the cross section of the rotor 5.
The utility model also provides a power generation system, include:
the above-described generator;
a rectifier assembly 10 connected to the generator;
and the power battery 11 is connected with the generator through the rectifier assembly 10.
In the present embodiment, the generator is a three-phase generator, the rectifier assembly 10 includes a first diode 12, a second diode 13, a third diode 14, a fourth diode 15, a fifth diode 16 and a sixth diode 17, a first output terminal 18 of the generator is connected to an anode of the first diode 12 and a cathode of the second diode 13, a second output terminal 19 of the generator is connected to an anode of the third diode 14 and a cathode of the fourth diode 15, a third output terminal 20 of the generator is connected to an anode of the fifth diode 16 and a cathode of the sixth diode 17, cathodes of the first diode 12, the third diode 14 and the fifth diode 16 are connected to an anode of the power battery 11, and anodes of the second diode 13, the fourth diode 15 and the sixth diode 17 are connected to a cathode of the power battery 11.
The utility model also provides an automobile, including foretell power generation system.
To sum up, when the generator provided by the utility model is used, a direct current exciting current is introduced into the exciting winding 3, see fig. 2, wherein the dots indicate the direction of the current flowing out of the paper surface, the direction is positive, the X-shaped dots indicate the direction of the current flowing in the paper surface, and the direction is negative; the magnetic field direction can be obtained by right-hand screw rule, and the magnetic field direction generated by the excitation winding 3 is consistent with the NS direction of the permanent magnet 4. The rotor 5 rotates in the alternating magnetic field of the stator 1 to generate torque and power, and the magnitude of the output voltage current and the magnitude of the output power can be adjusted by controlling the magnitude and the direction of the exciting current so as to meet the power generation requirements of the range extender system of the automobile under different working conditions. When the high-speed weak magnetism is needed, the magnetomotive force direction of the excitation winding 3 is opposite to the magnetomotive force of the permanent magnet 4 by adjusting the current magnitude and direction, the synthesized magnetomotive force is reduced, the purpose of high-speed weak magnetism is achieved, and the control is convenient. The utility model provides an among the power generation system, the electricity that the generator sent is the three-phase alternating current, and the rectifier subassembly 10 rectification through constituteing by six diodes is the direct current of regulated voltage and power, and the storage is in power battery 11.
While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. An electrical generator, comprising:
the stator is cylindrical, an alternating current winding and an excitation winding are embedded in the stator, the alternating current winding and the excitation winding are uniformly distributed along the circumferential direction of the stator, and one side, close to the inner periphery of the stator, of each excitation winding is provided with a permanent magnet;
the rotor is columnar, a plurality of salient poles are uniformly distributed on the periphery of the rotor, and the rotor is arranged inside the stator in a penetrating mode.
2. The generator of claim 1 wherein a plurality of ac winding positioning slots are uniformly formed in an inner periphery of said stator, ac winding teeth are formed between every two of said ac winding positioning slots, and said ac winding is wound around said ac winding teeth.
3. The generator of claim 2 wherein said ac winding teeth are internally provided with an excitation winding detent and a permanent magnet detent, said excitation winding and said permanent magnet being embedded in said excitation winding detent and said permanent magnet detent, respectively.
4. The generator of claim 3, wherein the polarities of the ends of two adjacent permanent magnets close to each other are the same.
5. The generator of claim 4, wherein the polarity of the permanent magnet on the side of the field winding near the inner periphery of the stator coincides with the direction of the magnetic field generated by the field winding.
6. The generator of claim 1 wherein an air gap is provided between the rotor and the stator.
7. The generator of claim 1 wherein the salient poles are uniformly distributed in a circumferential direction of the rotor, the salient poles forming a tooth-like structure in a cross section of the rotor.
8. A power generation system, comprising:
the generator of any one of claims 1-7;
a rectifier assembly connected with the generator;
and the power battery is connected with the generator through the rectifier assembly.
9. The power generation system of claim 8, wherein the generator is a three-phase generator, the rectifier component comprises a first diode, a second diode, a third diode, a fourth diode, a fifth diode and a sixth diode, a first output terminal of the generator is connected with an anode of the first diode and a cathode of the second diode, the second output end of the generator is connected with the anode of the third diode and the cathode of the fourth diode, a third output end of the generator is connected with the anode of the fifth diode and the cathode of the sixth diode, the cathodes of the first diode, the third diode and the fifth diode are connected with the anode of the power battery, and the anodes of the second diode, the fourth diode and the sixth diode are connected with the cathode of the power battery.
10. An automobile, characterized by comprising the power generation system according to any one of claims 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021659561.XU CN213341773U (en) | 2020-08-11 | 2020-08-11 | Generator, power generation system and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021659561.XU CN213341773U (en) | 2020-08-11 | 2020-08-11 | Generator, power generation system and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213341773U true CN213341773U (en) | 2021-06-01 |
Family
ID=76095281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021659561.XU Active CN213341773U (en) | 2020-08-11 | 2020-08-11 | Generator, power generation system and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213341773U (en) |
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2020
- 2020-08-11 CN CN202021659561.XU patent/CN213341773U/en active Active
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