CN107171495B - Cannonball power generation system and method - Google Patents
Cannonball power generation system and method Download PDFInfo
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- CN107171495B CN107171495B CN201710557800.7A CN201710557800A CN107171495B CN 107171495 B CN107171495 B CN 107171495B CN 201710557800 A CN201710557800 A CN 201710557800A CN 107171495 B CN107171495 B CN 107171495B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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Abstract
The invention discloses a cannonball power generation system and a cannonball power generation method, wherein the system comprises a permanent magnet synchronous generator and a rectification voltage reduction circuit, wherein the permanent magnet synchronous generator is used for generating power by utilizing the energy emitted by a cannonball, the rectification voltage reduction circuit is used for converting alternating current generated by the permanent magnet synchronous generator into stable direct current; the rotor comprises a rotor magnetic yoke, a plurality of permanent magnets uniformly arranged on the rotor magnetic yoke and a circular disc covering the plurality of permanent magnets; the rectification voltage reduction circuit comprises a three-phase bridge rectification circuit, a BUCK circuit and a PWM signal generation circuit; the method comprises the following steps: firstly, connecting a cannonball and a cannonball power generation system; and secondly, generating power by the cannonball power generation system in the cannonball launching process. The invention has novel and reasonable design, convenient realization, low cost and convenient installation of a power generation system, can obtain stable voltage output, saves resources and has high popularization and application value.
Description
Technical Field
The invention belongs to the technical field of power generation systems, and particularly relates to a cannonball power generation system and method.
Background
With the development of science and technology and the acceleration of modernization process, the demand of human on energy is increasing day by day, facing to the current world situation that the inherent energy on the earth is decreasing day by day and the global energy is tensed, how to effectively realize the energy regeneration and utilization, benefit the descendants of human beings, realize the sustainable development, become the new subject of the current science and technology development.
At present, most of electric energy used by people is provided by thermal power generation (accounting for about 80% of the whole electric power production), most of thermal power generation adopts coal which is a non-renewable resource and can be exhausted all day by day, carbon dioxide is generated by coal-fired power generation, air pollution and greenhouse effect are caused, the efficiency of thermal power generation is very low (only 30% -40%), and a large amount of heat energy is wasted; in order to relieve the energy shortage problem and reduce the environmental pollution, technologies such as solar power generation, wind power generation, hydroelectric power generation and the like are developed in succession in various countries in the world, and although the pollution to the environment is greatly reduced by developing the energy power generation, the solar power generation is influenced by day and night and rainy days in cloudy days; the wind power generation has serious regional limitation, has great relation with natural weather, and is not suitable for or has no wind power generation condition in many places in China; hydroelectric power generation is also limited by hydraulic resources and geographical conditions, if ocean waves and seawater fluctuation in the ocean are adopted for power generation, the hydroelectric power generation is also limited by the time of ocean tides, and the nation needs to invest huge financial resources, manpower and material resources for realizing the hydroelectric power generation. During the peak period of electricity utilization every year, for example, heating in winter and air-conditioning cooling in summer, the situation of insufficient electric energy supply often occurs. In order to relieve the situation of electric energy shortage, governments can forcibly open and limit the electric energy, so that a lot of inconvenience is brought to life of people, and huge economic loss is brought to part of enterprises. Therefore, it is imperative to actively search for a new power generation method and solve the problem of energy shortage.
Disclosure of Invention
The invention aims to solve the technical problem of providing a cannonball power generation system which is novel and reasonable in design, convenient to implement, low in cost, convenient to install, capable of obtaining stable voltage output, saving resources and high in popularization and application value, aiming at the defects in the prior art.
In order to solve the technical problems, the invention adopts the technical scheme that: a cannonball power generation system is characterized in that: the permanent magnet synchronous generator comprises a shaft post, a stator fixedly connected to the shaft post and two rotors rotatably connected to two ends of the shaft post, wherein the stator comprises a stator magnetic yoke and a coil winding wound on the stator magnetic yoke, an inner ring of the stator magnetic yoke is fixedly connected to the shaft post, and an outer ring of the stator magnetic yoke is fixedly connected to a shell of the cannonball; the rotor comprises a rotor magnetic yoke, even installed on the rotor magnetic yoke and a circular ring disc covering the even permanent magnets and used for providing a magnetic flux loop for the even permanent magnets, the circular ring disc is fixedly connected with the rotor magnetic yoke, the rotor magnetic yoke is rotationally connected with the shaft column, two adjacent permanent magnets are a group of permanent magnets, the polarity of the two permanent magnets in each group of permanent magnets is the same, the polarity of the two adjacent groups of permanent magnets is opposite, and the permanent magnets with the same polarity in the two rotors are oppositely arranged; the rectification voltage reduction circuit comprises a three-phase bridge rectifier circuit, a BUCK circuit and a PWM signal generation circuit, wherein the BUCK circuit is connected with the output end of the three-phase bridge rectifier circuit, the PWM signal generation circuit is used for providing PWM signals for the BUCK circuit, the input end of the three-phase bridge rectifier circuit is connected with the coil winding, and the BUCK circuit is connected with the PWM signal generation circuit.
The cannonball power generation system is characterized in that: the stator magnetic yoke comprises a circular stator magnetic yoke body and a plurality of coil slots which are uniformly arranged on the stator magnetic yoke body and used for winding coil windings.
The cannonball power generation system is characterized in that: and the coil winding is wound in the coil slot and then is bonded with the stator magnet yoke body through high-strength structural adhesive.
The cannonball power generation system is characterized in that: the coil winding is in a round end shape, a single-layer concentrated winding method is adopted for the coil winding, the coil winding penetrates out of a coil slot and then is connected in a star connection mode, and then the coil winding is connected with the input end of the three-phase bridge type rectifying circuit.
The cannonball power generation system is characterized in that: the inner ring of the stator magnetic yoke is bonded on the shaft column through high-strength structure glue, and the outer ring of the stator magnetic yoke is bonded on the shell of the cannonball through the high-strength structure glue.
The cannonball power generation system is characterized in that: the permanent magnet rotor is characterized in that the rotor magnetic yoke is uniformly provided with two permanent magnet mounting holes, and the permanent magnets are clamped in the permanent magnet mounting holes and are bonded with the rotor magnetic yoke through high-strength structural adhesive.
The cannonball power generation system is characterized in that: the ring disc is bonded with the rotor magnetic yoke through high-strength structural adhesive.
The cannonball power generation system is characterized in that: and the rotor magnetic yoke is rotationally connected with the shaft post through a deep groove ball bearing.
The cannonball power generation system is characterized in that: the output end of the BUCK circuit is connected with a 5V voltage-stabilized power supply circuit, the three-phase bridge rectification circuit comprises a diode D1, a diode D2, a diode D3, a diode D4, a diode D5 and a diode D6, the anode of the diode D1 is connected with the cathode of the diode D4, and then a lead is led out to be used as the input end of the A-phase current of the three-phase bridge rectifier circuit, the anode of the diode D2 is connected with the cathode of the diode D5, and then a lead is led out to be used as the input end of the phase B current of the three-phase bridge rectifier circuit, the anode of the diode D3 is connected with the cathode of the diode D6, and then a lead is led out to be used as the C-phase current input end of the three-phase bridge rectifier circuit, the cathodes of the diode D1, the diode D2 and the diode D3 are connected and are the positive voltage output end of the three-phase bridge rectifier circuit, the anodes of the diode D4, the diode D5 and the diode D6 are connected and are the cathode voltage output end of the three-phase bridge rectifier circuit; the BUCK circuit comprises a power MOSFET Q, an inductor L1, a diode D7, a polar capacitor C1 and a polar capacitor C2, wherein a source electrode of the power MOSFET Q and an anode of the polar capacitor C1 are connected with an anode voltage output end of a three-phase bridge rectifier circuit, a drain electrode of the power MOSFET Q and a cathode of the diode D7 are connected with one end of an inductor L1, the other end of the inductor L1 is connected with an anode of the polar capacitor C2 and is connected with a cathode voltage output end of the three-phase bridge rectifier circuit through a resistor R1, a cathode of the polar capacitor C1, an anode of the diode D7 and a cathode of the polar capacitor C2 are connected with a cathode voltage output end of the three-phase bridge rectifier circuit, an anode of the polar capacitor C2 is an anode voltage output end of the BUCK circuit, and a cathode of the polar capacitor C2 is a cathode voltage output end of the BUCK circuit; the 5V stabilized voltage power supply circuit comprises a chip L78L05ABZ, a nonpolar capacitor C6 and a nonpolar capacitor C8, wherein the 3 rd pin of the chip L78L05ABZ and the positive electrode of a polar capacitor C6 are both connected with the positive voltage output end of the BUCK circuit and are grounded through a nonpolar capacitor C7, the negative electrode of the polar capacitor C6 is grounded, the 2 nd pin of the chip L78L05ABZ is grounded, the 1 st pin of the chip L78L05ABZ is connected with the positive electrode of a nonpolar capacitor C8 and is grounded through a nonpolar capacitor C9 and a resistor R9 which are connected in parallel, the negative electrode of the nonpolar capacitor C8 is grounded, and the 1 st pin of the chip L78L05ABZ is the 5V voltage output end of the 5V stabilized voltage power supply circuit; the PWM signal generating circuit comprises a PWM control chip SG 6, a diode D8, a diode D9 and a polar capacitor C5, wherein the 1 st pin of the PWM control chip SG 6 is connected with the anode of the polar capacitor C2 through a resistor R6 and is grounded through a resistor R7; the 2 nd pin of the PWM control chip SG3525 is connected with a 5V voltage output end of a 5V voltage-stabilized power supply circuit through a resistor R2 and is grounded through a resistor R3; the 5 th pin of the PWM control chip SG 5 is grounded through a capacitor C4, the 6 th pin of the PWM control chip SG 5 is grounded through a resistor R5, a resistor R4 is connected between the 7 th pin and the 5 th pin of the PWM control chip SG 5, the 8 th pin of the PWM control chip SG 5 is connected with the positive electrode of the polar capacitor C5, the negative electrode of the polar capacitor C5 is grounded, a non-polar capacitor C3 is connected between the 9 th pin and the 1 st pin of the PWM control chip SG 5, the 11 th pin of the PWM control chip SG 5 is connected with the anode of a diode D8, the 14 th pin of the PWM control chip SG 5 is connected with the anode of a diode D9, the cathode of the diode D8 is connected with the cathode of a diode D9 and serves as an output terminal of the PWM signal generation circuit, and the gate of the power MOSFET Q is connected with the output terminal of the PWM signal generation circuit.
The invention also discloses a cannonball power generation method which is designed by combining the structural characteristics of the cannonball power generation system, has simple steps, is convenient to realize, can obtain stable voltage output, saves resources and has high popularization and application values, and is characterized by comprising the following steps:
step one, connecting a cannonball and a cannonball power generation system: bonding the outer ring of a stator magnetic yoke in the cannonball power generation system on the shell of the cannonball through high-strength structural adhesive;
step two, the cannonball power generation system generates power in the cannonball launching process: when the cannonball is launched from the barrel, the cannonball runs at a high speed, the stator fixedly connected with the shell of the cannonball rotates along with the cannonball, a coil winding wound on a magnetic yoke of the stator starts to cut magnetic lines of force, electromotive force is induced, alternating current is generated and output to a rectification voltage reduction circuit, a three-phase bridge type rectification circuit in the rectification voltage reduction circuit converts the alternating current into direct current, and a BUCK circuit outputs stable 12V voltage under the control of a PWM signal generation circuit; in the process that the stator rotates along with the cannonball, the torque obtained by the permanent magnet synchronous generator and the friction force between the bearing and the shaft column drive the rotor to rotate, and when the rotating angular speed of the rotor is the same as that of the stator, the permanent magnet synchronous generator stops generating electricity.
Compared with the prior art, the invention has the following advantages:
1. the invention breaks through the traditional power generation thought, utilizes the energy of high-speed rotation when the cannonball is launched to generate power, and has novel and reasonable design and convenient realization.
2. The polarity arrangement mode of the permanent magnet can lead the copper consumption of the permanent magnet synchronous generator to be smaller and can obtain high torque density and power density.
3. The coil winding adopts a single-layer concentrated winding method, and compared with the wiring mode of lap winding and wave winding, the thickness of the stator magnet yoke body can be reduced, so that the length of an air gap can be reduced, and the magnetic density of the air gap can be improved; in addition, the size of the permanent magnet synchronous generator can be reduced, and the permanent magnet synchronous generator is more convenient to mount in a cannonball.
4. Many parts in the permanent magnet synchronous generator are bonded by high-strength structural adhesive, and the bonding mode is convenient to process and mount and reduces the cost of the permanent magnet synchronous generator.
6. The rectification voltage-reducing circuit has the advantages of simple circuit structure, low implementation cost and capability of obtaining stable 12V output voltage.
7. The cannonball power generation method is designed by combining the structural characteristics of the cannonball power generation system, and is simple in steps and convenient to implement.
8. The invention not only fully utilizes the advantage of high-speed rotation of the cannonball, but also obtains the required electric energy, saves resources and has high popularization and application value.
In conclusion, the invention has novel and reasonable design, convenient realization, low cost and convenient installation of the power generation system, can obtain stable voltage output, saves resources and has high popularization and application value.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
Fig. 1 is a connection block diagram of a cannonball power generation system of the present invention.
Fig. 2 is a perspective view of a permanent magnet synchronous generator according to the present invention.
Fig. 3 is a front view of fig. 1.
Fig. 4 is a schematic structural view of the stator of the present invention.
Fig. 5 is a schematic structural view of a stator yoke according to the present invention.
Fig. 6 is a schematic diagram of the coil winding of the present invention.
Fig. 7 is a schematic structural view of the rotor of the present invention.
Fig. 8 is a schematic view of the rotor of the present invention except for the circular ring disk.
Fig. 9 is a schematic structural view of a rotor yoke according to the present invention.
Fig. 10 is a schematic structural view of a permanent magnet of the present invention.
Fig. 11 is a schematic circuit diagram of the rectifying and voltage-reducing circuit of the present invention.
FIG. 12 is a block diagram of a method flow for the cannonball power generation method of the present invention.
Description of reference numerals:
1-permanent magnet synchronous generator; 1-axial column; 1-2-stator;
1-21-stator yoke; 1-211-stator yoke body; 1-212-coil slot;
1-22-coil winding; 1-3-rotor; 1-31-rotor yoke;
1-32-block permanent magnet; 1-33-ring disk; 1-34-permanent magnet mounting holes;
1-4-bearings; 2, a rectification voltage reduction circuit; 2-1-three-phase bridge rectification circuit;
2-BUCK circuit; 2-3-PWM signal generating circuit; 2-4-5V voltage-stabilized power supply circuit.
Detailed Description
As shown in fig. 1, 2 and 3, the cannonball power generation system of the invention comprises a permanent magnet synchronous generator 1 for generating power by using the energy emitted by the cannonball and a rectification voltage-reduction circuit 2 for converting the alternating current generated by the permanent magnet synchronous generator 1 into stable direct current, the permanent magnet synchronous generator 1 comprises a shaft column 1-1, a stator 1-2 fixedly connected to the shaft column 1-1 and two rotors 1-3 rotatably connected to two ends of the shaft column 1-1, and with reference to fig. 4, 5 and 6, the stator 1-2 includes a stator yoke 1-21 and coil windings 1-22 wound on the stator yoke 1-21, the inner ring of the stator magnetic yoke 1-21 is fixedly connected to the shaft column 1-1, and the outer ring of the stator magnetic yoke 1-21 is fixedly connected to the shell of the cannonball; with reference to fig. 7, 8, 9 and 10, the rotor 1-3 includes a rotor yoke 1-31, a plurality of even permanent magnets 1-32 mounted on the rotor yoke 1-31, and a circular ring disc 1-33 covering the even permanent magnets 1-32 and providing a magnetic flux loop for the even permanent magnets 1-32, the circular ring disc 1-33 is fixedly connected with the rotor yoke 1-31, the rotor yoke 1-31 is rotatably connected with the shaft column 1-1, two adjacent permanent magnets 1-32 are a group of permanent magnets 1-32, the two permanent magnets 1-32 in each group of permanent magnets 1-32 have the same polarity, the two groups of adjacent permanent magnets 1-32 have opposite polarities, and the permanent magnets with the same polarity in the two rotors 1-3 are oppositely disposed; the rectification voltage-reducing circuit 2 comprises a three-phase bridge rectification circuit 2-1, a BUCK circuit 2-2 connected with the output end of the three-phase bridge rectification circuit 2-1 and a PWM signal generating circuit 2-3 for providing PWM signals for the BUCK circuit 2-2, the input end of the three-phase bridge rectification circuit 2-1 is connected with a coil winding 1-22, and the BUCK circuit 2-2 is connected with the PWM signal generating circuit 2-3.
In the invention, the polarity arrangement mode of the permanent magnets 1-32 forms an N-N type structure of the permanent magnets 1-32. The permanent magnets 1-32 of the same polarity in the two rotors 1-3 are placed opposite each other so that the flux direction of the two air gaps is opposite and the flux is maximum at the stator yoke 1-21 common to the two rotors 1-3. When the permanent magnet synchronous generator 1 runs, in the same mechanical position, the potential directions of the coil windings 1-22 on the two sides of the stator 1-2 are opposite, the magnetic flux passing through the coil windings 1-22 is just the largest, and high torque density and power density can be obtained, so that the end parts of the coil windings 1-22 are very short, the copper consumption of the permanent magnet synchronous generator 1 is low, and the utilization rate of copper wires for winding the coil windings 1-22 is high.
In this embodiment, as shown in fig. 5, the stator yoke 1 to 21 includes a ring-shaped stator yoke body 1 to 211 and a plurality of coil slots 1 to 212 uniformly formed in the stator yoke body 1 to 211 for winding the coil windings 1 to 22.
In this embodiment, the coil winding 1-22 is wound in the coil slot 1-212 and then bonded to the stator yoke body 1-211 by a high strength structural adhesive.
In this embodiment, as shown in fig. 6, the coil windings 1 to 22 are round-ended, the coil windings 1 to 22 are formed by a single-layer concentrated winding method, and the coil windings 1 to 22 are connected by a star connection method after penetrating through the coil slots 1 to 212, and then connected to the input end of the three-phase bridge rectifier circuit 2 to 1. The coil windings 1 to 22 adopt a single-layer concentrated winding method, and compared with the wiring mode of lap winding and wave winding, the thickness of the stator magnetic yoke body 1 to 211 can be reduced, so that the length of an air gap can be reduced, and the magnetic density of the air gap can be improved; in addition, the size of the permanent magnet synchronous generator 1 can be reduced, and the permanent magnet synchronous generator 1 is more convenient to mount in a cannonball.
In the embodiment, the inner ring of the stator magnetic yoke 1-21 is bonded to the shaft column 1-1 through high-strength structural adhesive, and the outer ring of the stator magnetic yoke 1-21 is bonded to the shell of the cannonball through high-strength structural adhesive.
In this embodiment, as shown in fig. 9, the rotor yoke 1-31 is uniformly provided with a plurality of permanent magnet mounting holes 1-34, and the permanent magnets 1-32 are clamped in the permanent magnet mounting holes 1-34 and bonded to the rotor yoke 1-31 by high-strength structural adhesive.
In this embodiment, the annular discs 1 to 33 are bonded to the rotor yokes 1 to 31 by high-strength structural adhesive.
In the embodiment, as shown in fig. 3, the rotor yoke 1-31 is rotatably connected with the shaft post 1-1 through a deep groove ball bearing 1-4. In specific implementation, the shaft column 1-1 is fixedly connected with an inner ring of the deep groove ball bearing 1-4, and the rotor magnetic yoke 1-31 is fixedly connected with an outer ring of the deep groove ball bearing 1-4.
The permanent magnet synchronous generator 1 is arranged in the shell and is a disposable product, so that the coil winding 1-22 is wound in the coil groove 1-212 and then is bonded with the stator magnet yoke body 1-211 through high-strength structural adhesive, the inner ring of the stator magnet yoke 1-21 is bonded on the shaft column 1-1 through high-strength structural adhesive, the outer ring of the stator magnet yoke 1-21 is bonded on the shell of the shell through high-strength structural adhesive, the permanent magnet 1-32 is clamped in the permanent magnet mounting hole 1-34 and is bonded with the rotor magnet yoke 1-31 through high-strength structural adhesive, and the annular disc 1-33 is bonded with the rotor magnet yoke 1-31 through high-strength structural adhesive, so that the bonding mode is convenient to process and mount and reduces the cost of the permanent magnet synchronous generator 1.
In the present embodiment, as shown in fig. 1 and 11, the output terminal of the BUCK circuit 2-2 is connected to a 5V regulated power supply circuit 2-4, the three-phase bridge rectifier circuit 2-1 includes a diode D1, a diode D2, a diode D3, a diode D4, a diode D5 and a diode D6, the anode of the diode D1 is connected to the cathode of the diode D4 and then led out to a lead as the a-phase current input terminal of the three-phase bridge rectifier circuit 2-1, the anode of the diode D2 is connected to the cathode of the diode D5 and then led out to a lead as the B-phase current input terminal of the three-phase bridge rectifier circuit 2-1, the anode of the diode D3 is connected to the cathode of the diode D6 and then led out to a lead as the C-phase current input terminal of the three-phase bridge rectifier circuit 2-1, the cathodes of the diode D1, the diode D2 and the diode D3, the anodes of the diode D4, the diode D5 and the diode D6 are connected and are the cathode voltage output end of the three-phase bridge rectification circuit 2-1; the BUCK circuit 2-2 comprises a power MOSFET Q, an inductor L1, a diode D7, a polar capacitor C1 and a polar capacitor C2, the source electrode of the power MOSFET Q and the anode of the polar capacitor C1 are both connected with the anode voltage output end of the three-phase bridge rectifier circuit 2-1, the drain of the power MOSFET Q and the cathode of the diode D7 are both connected with one end of an inductor L1, the other end of the inductor L1 is connected with the anode of a polar capacitor C2, and is connected with the negative voltage output end of the three-phase bridge rectification circuit 2-1 through a resistor R1, the cathode of the polar capacitor C1, the anode of the diode D7 and the cathode of the polar capacitor C2 are all connected with the cathode voltage output end of the three-phase bridge rectifier circuit 2-1, the positive electrode of the polarity capacitor C2 is the positive electrode voltage output end of the BUCK circuit 2-2, the negative electrode of the polarity capacitor C2 is the negative electrode voltage output end of the BUCK circuit 2-2; the 5V stabilized voltage power supply circuit 2-4 comprises a chip L78L05ABZ, a nonpolar capacitor C6 and a nonpolar capacitor C8, wherein the 3 rd pin of the chip L78L05ABZ and the positive electrode of a polar capacitor C6 are both connected with the positive voltage output end of the BUCK circuit 2-2 and are grounded through the nonpolar capacitor C7, the negative electrode of the polar capacitor C6 is grounded, the 2 nd pin of the chip L78L05ABZ is grounded, the 1 st pin of the chip L78L05ABZ is connected with the positive electrode of a nonpolar capacitor C8 and is grounded through a nonpolar capacitor C9 and a resistor R9 which are connected in parallel, the negative electrode of the nonpolar capacitor C8 is grounded, and the 1 st pin of the chip L78L05ABZ is the 5V stabilized voltage power supply circuit 2-4; the PWM signal generating circuit 2-3 comprises a PWM control chip SG 6, a diode D8, a diode D9 and a polar capacitor C5, wherein the 1 st pin of the PWM control chip SG 6 is connected with the anode of the polar capacitor C2 through a resistor R6 and is grounded through a resistor R7; the 2 nd pin of the PWM control chip SG3525 is connected with a 5V voltage output end of a 5V voltage-stabilized power supply circuit 2-4 through a resistor R2 and is grounded through a resistor R3; the 5 th pin of the PWM control chip SG 5 is grounded through a capacitor C4, the 6 th pin of the PWM control chip SG 5 is grounded through a resistor R5, a resistor R4 is connected between the 7 th pin and the 5 th pin of the PWM control chip SG 5, the 8 th pin of the PWM control chip SG 5 is connected with the positive electrode of the polar capacitor C5, the negative electrode of the polar capacitor C5 is grounded, a non-polar capacitor C3 is connected between the 9 th pin and the 1 st pin of the PWM control chip SG 5, the 11 th pin of the PWM control chip SG 5 is connected with the anode of a diode D8, the 14 th pin of the PWM control chip SG 5 is connected with the anode of a diode D9, the cathode of the diode D8 is connected with the cathode of a diode D9 and serves as the output terminal of the PWM signal generating circuit 2-3, and the gate of the MOSFET Q is connected with the output terminal of the PWM signal generating circuit 2-3.
In this embodiment, the voltage output by the BUCK circuit 2-2 is 12V.
In the BUCK circuit 2-2, the 1 st pin of the PWM control chip SG3525 is an inverting input terminal of an internal error amplifier, and a common mode input voltage range of the error amplifier is 1.5V to 5.2V, so that a 12V voltage output by the BUCK circuit 2-2 is divided by a voltage dividing circuit composed of a resistor R6 and a resistor R7 and then output to the 1 st pin of the PWM control chip SG 3525. The 2 nd pin of the PWM control chip SG3525 is a non-inverting input end of an internal error amplifier, 5V voltage output by the 5V voltage stabilizing power supply circuit 2-4 is divided by a voltage dividing circuit consisting of a resistor R2 and a resistor R3 to obtain 2.5V reference comparison voltage, the reference comparison voltage is output to the 2 nd pin of the PWM control chip SG3525 and is compared with voltage input by the 1 st pin of the PWM control chip SG 3525. The 5 th pin of the PWM control chip SG3525 is an oscillation capacitor terminal, the nonpolar capacitor C4 is an oscillation capacitor, the value of the oscillation capacitor is 0.1uF, and a sawtooth wave changing from 0.6V to 3.5V can be obtained at both ends of the nonpolar capacitor C4. The 6 th pin of the PWM control chip SG3525 is an oscillating resistor end, the resistor R5 is an oscillating resistor, the value of the oscillating resistor is 2K omega-150K omega, and the larger the resistance value of the resistor R5 is, the longer the charging time of the PWM control chip SG3525 to the nonpolar capacitor C4 is. The 7 th pin of the PWM control chip SG 4 is a discharging end, the discharging of the nonpolar capacitor C4 is determined by a dead zone resistor R4 between the 5 th pin and the 7 th pin of the PWM control chip SG 4, a charging circuit and a discharging circuit are separated, the dead zone time is favorably adjusted through the dead zone resistor R4, the dead zone time adjusting range is wider, the value of the resistor R4 is 0-500 omega, the larger the resistor R4 and the nonpolar capacitor C4 is, the longer the discharging time is, and the shorter the discharging time is otherwise. The 8 th pin of the PWM control chip SG3525 is a soft start end, the polar capacitor C5 is a soft start capacitor, and the polar capacitor C5 is charged by a 50uA constant current source in the PWM control chip SG 3525. A 9 th pin of the PWM control chip SG3525 is a compensation end, a nonpolar capacitor C3 is connected between the 9 th pin and a 1 st pin of the PWM control chip SG3525 to form a PI regulator, the working voltage range of the compensation end is 1.5V-5.2V, when the voltage output by the BUCK circuit 2-2 is less than 12V, the electric signal of the 1 st pin of the PWM control chip SG3525 is smaller than the 2 nd pin, and a 11 th pin and a 14 th pin of the PWM control chip SG3525 generate PWM waves to drive a power MOSFET Q to be switched on and increase the duty ratio of PWM, so that the voltage output by the BUCK circuit 2-2 is increased; on the contrary, when the voltage output by the BUCK circuit 2-2 is greater than 12V, the electrical signal of the 1 st pin of the PWM control chip SG3525 is greater than the 2 nd pin, no PWM wave is generated at the 11 th pin and the 14 th pin of the PWM control chip SG3525, and the power MOSFET Q is turned off, thereby reducing the voltage output by the BUCK circuit 2-2; thereby maintaining the voltage output from the BUCK circuit 2-2 at 12V.
As shown in fig. 12, the cannonball power generation method of the invention comprises the following steps:
step one, connecting a cannonball and a cannonball power generation system: bonding the outer ring of a stator magnetic yoke 1-21 in the cannonball power generation system on the shell of the cannonball through high-strength structural adhesive;
step two, the cannonball power generation system generates power in the cannonball launching process: when the cannonball is launched from the barrel, the cannonball runs at high speed, a stator 1-2 fixedly connected with a shell of the cannonball rotates along with the cannonball, a coil winding 1-22 wound on a magnetic yoke 1-21 of the stator starts to cut magnetic lines of force, electromotive force is induced, alternating current is generated and output to a rectification voltage reduction circuit 2, a three-phase bridge rectification circuit 2-1 in the rectification voltage reduction circuit 2 converts the alternating current into direct current, and a BUCK circuit 2-2 outputs stable 12V voltage under the control of a PWM signal generation circuit 2-3; in the process that the stator 1-2 rotates along with the cannonball, the torque obtained by the permanent magnet synchronous generator 1 and the friction force between the bearing 1-4 and the shaft column 1-1 drive the rotor 1-3 to rotate together, and when the rotating angular speed of the rotor 1-3 is the same as that of the stator 1-2, the permanent magnet synchronous generator 1 stops generating electricity.
The torque obtained by the permanent magnet synchronous generator 1 is obtained by subtracting the stray loss of the permanent magnet synchronous generator 1 from the output power of the BUCK circuit 2-2 and dividing the result by the angular speed of the stator 1-2.
In conclusion, the invention breaks through the traditional power generation idea, utilizes the energy of high-speed rotation when the cannonball is launched to generate power, can obtain stable voltage output, saves resources and has high popularization and application values.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (6)
1. A cannonball power generation system is characterized in that: the permanent magnet synchronous generator comprises a permanent magnet synchronous generator (1) for generating electricity by utilizing energy emitted by a cannonball and a rectifying and voltage-reducing circuit (2) for converting alternating current generated by the permanent magnet synchronous generator (1) into stable direct current, wherein the permanent magnet synchronous generator (1) comprises a shaft post (1-1), a stator (1-2) fixedly connected to the shaft post (1-1) and two rotors (1-3) rotatably connected to two ends of the shaft post (1-1), the stator (1-2) comprises a stator magnetic yoke (1-21) and coil windings (1-22) wound on the stator magnetic yoke (1-21), the inner ring of the stator magnetic yoke (1-21) is fixedly connected to the shaft post (1-1), and the outer ring of the stator magnetic yoke (1-21) is fixedly connected to a shell of the cannonball; the rotor (1-3) comprises a rotor magnetic yoke (1-31), a plurality of double permanent magnets (1-32) uniformly arranged on the rotor magnetic yoke (1-31) and a circular disc (1-33) which covers the plurality of double permanent magnets (1-32) and is used for providing a magnetic flux loop for the plurality of double permanent magnets (1-32), the annular disc (1-33) is fixedly connected with a rotor magnetic yoke (1-31), the rotor magnetic yoke (1-31) is rotatably connected with a shaft column (1-1), two adjacent permanent magnets (1-32) form a group of permanent magnets (1-32), the polarities of the two permanent magnets (1-32) in each group of permanent magnets (1-32) are the same, the polarities of the two adjacent groups of permanent magnets (1-32) are opposite, and the permanent magnets with the same polarity in the two rotors (1-3) are oppositely arranged; the rectification voltage-reducing circuit (2) comprises a three-phase bridge rectifier circuit (2-1), a BUCK circuit (2-2) connected with the output end of the three-phase bridge rectifier circuit (2-1) and a PWM signal generating circuit (2-3) for providing PWM signals for the BUCK circuit (2-2), the input end of the three-phase bridge rectifier circuit (2-1) is connected with the coil winding (1-22), and the BUCK circuit (2-2) is connected with the PWM signal generating circuit (2-3);
the stator magnet yoke (1-21) comprises a circular stator magnet yoke body (1-211) and a plurality of coil slots (1-212) which are uniformly arranged on the stator magnet yoke body (1-211) and used for winding coil windings (1-22);
the coil windings (1-22) are in a round end shape, the coil windings (1-22) adopt a single-layer concentrated winding method, the coil windings (1-22) penetrate out of the coil slots (1-212) and are connected by a star connection method, and then the coil windings are connected with the input end of the three-phase bridge rectifier circuit (2-1);
the rotor magnetic yoke (1-31) is uniformly provided with a plurality of permanent magnet mounting holes (1-34), and the permanent magnets (1-32) are clamped in the permanent magnet mounting holes (1-34) and bonded with the rotor magnetic yoke (1-31) through high-strength structural adhesive;
the output end of the BUCK circuit (2-2) is connected with a 5V stabilized voltage power supply circuit (2-4), the three-phase bridge rectifier circuit (2-1) comprises a diode D1, a diode D2, a diode D3, a diode D4, a diode D5 and a diode D6, the anode of the diode D1 is connected with the cathode of the diode D4 and then leads out a lead to be used as an A-phase current input end of the three-phase bridge rectifier circuit (2-1), the anode of the diode D2 is connected with the cathode of the diode D5 and then leads out a lead to be used as a B-phase current input end of the three-phase bridge rectifier circuit (2-1), the anode of the diode D3 is connected with the cathode of the diode D6 and then leads out a lead to be used as a C-phase current input end of the three-phase bridge rectifier circuit (2-1), the cathodes of the diode D1, the diode D2 and the diode D3, the anodes of the diode D4, the diode D5 and the diode D6 are connected and are the cathode voltage output end of the three-phase bridge rectifier circuit (2-1); the BUCK circuit (2-2) comprises a power MOSFET Q, an inductor L1, a diode D7, a polar capacitor C1 and a polar capacitor C2, the source electrode of the power MOSFET Q and the anode of the polar capacitor C1 are both connected with the anode voltage output end of the three-phase bridge rectifier circuit (2-1), the drain of the power MOSFET Q and the cathode of the diode D7 are both connected with one end of an inductor L1, the other end of the inductor L1 is connected with the anode of a polar capacitor C2, and is connected with the negative voltage output end of the three-phase bridge rectification circuit (2-1) through a resistor R1, the cathode of the polar capacitor C1, the anode of the diode D7 and the cathode of the polar capacitor C2 are connected with the cathode voltage output end of the three-phase bridge rectifier circuit (2-1), the positive electrode of the polar capacitor C2 is the positive electrode voltage output end of the BUCK circuit (2-2), the negative electrode of the polar capacitor C2 is the negative electrode voltage output end of the BUCK circuit (2-2); the 5V stabilized voltage power supply circuit (2-4) comprises a chip L78L05ABZ, a nonpolar capacitor C6 and a nonpolar capacitor C8, wherein the 3 rd pin of the chip L78L05ABZ and the positive electrode of a polar capacitor C6 are both connected with the positive voltage output end of the BUCK circuit (2-2) and are grounded through a nonpolar capacitor C7, the negative electrode of the polar capacitor C6 is grounded, the 2 nd pin of the chip L78L05ABZ is grounded, the 1 st pin of the chip L78L05ABZ is connected with the positive electrode of a nonpolar capacitor C8 and is grounded through a nonpolar capacitor C9 and a resistor R9 which are connected in parallel, the negative electrode of the nonpolar capacitor C8 is grounded, and the 1 st pin of the chip L78L05ABZ is the 5V stabilized voltage power supply output end of the 5V stabilized voltage power supply circuit (2-4); the PWM signal generating circuit (2-3) comprises a PWM control chip SG 6, a diode D8, a diode D9 and a polar capacitor C5, wherein a 1 st pin of the PWM control chip SG 6 is connected with the anode of the polar capacitor C2 through a resistor R6 and is grounded through a resistor R7; the 2 nd pin of the PWM control chip SG3525 is connected with a 5V voltage output end of a 5V voltage-stabilized power supply circuit (2-4) through a resistor R2 and is grounded through a resistor R3; the 5 th pin of the PWM control chip SG 5 is grounded through a capacitor C4, the 6 th pin of the PWM control chip SG 5 is grounded through a resistor R5, a resistor R4 is connected between the 7 th pin and the 5 th pin of the PWM control chip SG 5, the 8 th pin of the PWM control chip SG 5 is connected with the positive electrode of the polar capacitor C5, the negative electrode of the polar capacitor C5 is grounded, a non-polar capacitor C3 is connected between the 9 th pin and the 1 st pin of the PWM control chip SG 5, the 11 th pin of the PWM control chip SG 5 is connected with the anode of a diode D8, the 14 th pin of the PWM control chip SG 5 is connected with the anode of a diode D9, the cathode of the diode D8 is connected with the cathode of a diode D9 and is the output end of a PWM signal generating circuit (2-3), and the gate of the power MOSFET Q is connected with the output end of the PWM signal generating circuit (2-3).
2. A projectile power generation system as recited in claim 1, wherein: the coil winding (1-22) is wound in the coil slot (1-212) and then is bonded with the stator magnet yoke body (1-211) through high-strength structural adhesive.
3. A projectile power generation system as recited in claim 1, wherein: the inner ring of the stator magnetic yoke (1-21) is bonded on the shaft column (1-1) through high-strength structural adhesive, and the outer ring of the stator magnetic yoke (1-21) is bonded on the shell of the cannonball through high-strength structural adhesive.
4. A projectile power generation system as recited in claim 1, wherein: the circular ring disc (1-33) is bonded with the rotor magnetic yoke (1-31) through high-strength structural adhesive.
5. A projectile power generation system as recited in claim 1, wherein: the rotor magnetic yoke (1-31) is rotationally connected with the shaft column (1-1) through a deep groove ball bearing (1-4).
6. A method of generating power using the cannonball power generation system of claim 1, the method comprising the steps of:
step one, connecting a cannonball and a cannonball power generation system: bonding the outer ring of a stator magnetic yoke (1-21) in the cannonball power generation system on the shell of the cannonball through high-strength structural adhesive;
step two, the cannonball power generation system generates power in the cannonball launching process: when the cannonball is launched from a barrel, the cannonball runs at high speed, a stator (1-2) fixedly connected with a shell of the cannonball rotates along with the cannonball, a coil winding (1-22) wound on a magnetic yoke (1-21) of the stator starts to cut magnetic lines of force, electromotive force is induced, alternating current is generated and output to a rectification voltage reduction circuit (2), a three-phase bridge rectifier circuit (2-1) in the rectification voltage reduction circuit (2) converts the alternating current into direct current, and a BUCK circuit (2-2) outputs stable 12V voltage under the control of a PWM signal generating circuit (2-3); in the process that the stator (1-2) rotates along with the cannonball, torque obtained by the permanent magnet synchronous generator (1) and friction force between the bearing (1-4) and the shaft column (1-1) drive the rotor (1-3) to rotate together, and when the rotating angular speed of the rotor (1-3) is the same as that of the stator (1-2), the permanent magnet synchronous generator (1) stops generating electricity.
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| CN101447760A (en) * | 2008-10-06 | 2009-06-03 | 河南科技大学 | Voltage controller of wind generating set |
| CN204391917U (en) * | 2015-01-05 | 2015-06-10 | 绍兴市希多电机有限公司 | A kind of permanent magnetic disc type wind power generator stator |
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| JP3406213B2 (en) * | 1997-12-27 | 2003-05-12 | 俊一 武藤 | Simulated shell |
| CN201549996U (en) * | 2009-10-28 | 2010-08-11 | 林庆福 | Disk generator |
| CN104505975B (en) * | 2014-11-19 | 2017-01-04 | 哈尔滨工程大学 | Vehicle-mounted flywheel energy storage device |
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|---|---|---|---|---|
| CN101447760A (en) * | 2008-10-06 | 2009-06-03 | 河南科技大学 | Voltage controller of wind generating set |
| CN204391917U (en) * | 2015-01-05 | 2015-06-10 | 绍兴市希多电机有限公司 | A kind of permanent magnetic disc type wind power generator stator |
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| Title |
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| 旋转式自发电贮能技术探索性研究;李运动;《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》;20080115;第5-14页 * |
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