CN110266225B - Method and system for controlling power generation current of power generation device - Google Patents
Method and system for controlling power generation current of power generation device Download PDFInfo
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- CN110266225B CN110266225B CN201910577041.XA CN201910577041A CN110266225B CN 110266225 B CN110266225 B CN 110266225B CN 201910577041 A CN201910577041 A CN 201910577041A CN 110266225 B CN110266225 B CN 110266225B
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- 238000010248 power generation Methods 0.000 title claims abstract description 220
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000033001 locomotion Effects 0.000 abstract description 15
- 238000010586 diagram Methods 0.000 description 5
- 230000006978 adaptation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/008—Arrangements for controlling electric generators for the purpose of obtaining a desired output wherein the generator is controlled by the requirements of the prime mover
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/45—Special adaptation of control arrangements for generators for motor vehicles, e.g. car alternators
Abstract
The invention discloses a method for controlling the power generation current of a power generation device, which relates to the technical field of manpower power generation and comprises the following steps: step S1, collecting an instantaneous power generation voltage value and an actual power generation current value of a power generation device; step S2, acquiring a gear current value, and calculating a target power generation current value according to the instantaneous power generation voltage value and the gear current value; step S3, judging whether the difference value between the actual power generation current value and the target power generation current value exceeds a preset threshold value, and if not, generating power by using the current actual power generation current value; if yes, the actual power generation current value is adjusted until the difference value does not exceed the preset threshold value, and power generation is performed according to the adjusted actual power generation current value. The invention also discloses a system for controlling the power generation current of the power generation device. The invention can provide the generated current meeting various movement requirements of human bodies.
Description
Technical Field
The invention relates to the technical field of manpower power generation, in particular to a method and a system for controlling power generation current of a power generation device.
Background
With the development of technology and the improvement of living standard, the entertainment mode is increasingly abundant. Small vessels are currently popular recreational sports equipment that are typically provided with manual drive means, including foot pedal means, hand operated means, and the like, in addition to electric/internal combustion engine drive means.
In the related equipment, the prior art adopts a pedal bicycle to convert the mechanical energy of the pedal bicycle into the electric energy for the ship, thereby saving the ship energy consumption. However, in the process of converting the mechanical energy of the pedaling bicycle into electric energy, the existing method and system for controlling the power generation device usually pay attention to the power generation efficiency, and do not consider the movement requirement of the human body. Generally, when the speed of stepping on a bicycle is high, it indicates that the stepping person is energetic, and a more vigorous exercise effect is required, and it is difficult for the existing method and system for controlling the power generation device to meet the above-mentioned requirements.
Disclosure of Invention
In view of the drawbacks of the prior art, an object of the present invention is to provide a method and a system for controlling a generated current of a power generation device, which are capable of providing a generated current satisfying various exercise demands of a human body.
In order to achieve the above purpose, the invention adopts the following technical scheme: a method of controlling a generated current of a power generation device, comprising the steps of:
collecting an instantaneous power generation voltage value and an actual power generation current value of a power generation device;
acquiring a gear current value, and calculating a target power generation current value according to the instantaneous power generation voltage value and the gear current value;
judging whether the difference value between the actual power generation current value and the target power generation current value exceeds a preset threshold value, and if not, generating power by using the current actual power generation current value; if yes, the actual power generation current value is adjusted until the difference value does not exceed the preset threshold value, and power generation is performed according to the adjusted actual power generation current value.
Based on the technical scheme, the formula for calculating the target power generation current value is as follows:
or->
Wherein,representing a target generated current value; />Representing an instantaneous power generation voltage value of the power generation device; />A gear current value is represented; />Representing the maximum generated power of the power generation device; />Indicating the maximum power generation voltage of the power generation device.
On the basis of the technical scheme, the number of the selectable gear current values is at least 3, including 7A, 9A and 11A.
The present invention also provides a system for controlling a generated current of a power generation device, comprising:
a voltage acquisition circuit for acquiring an instantaneous power generation voltage value of the power generation device;
a current acquisition circuit for acquiring an actual power generation current value of the power generation device;
the CPU control circuit is used for acquiring a gear current value, calculating a target power generation current value according to the instantaneous power generation voltage value and the gear current value, and judging whether the difference value between the actual power generation current value and the target power generation current value exceeds a preset threshold value or not;
a main power circuit configured to: if the difference value does not exceed the preset threshold value, the main power circuit generates power according to the current value of the current actual power generation; and if the difference value exceeds a preset threshold value, the main power circuit is used for adjusting the actual power generation current value until the difference value does not exceed the preset threshold value, and generating power by using the adjusted actual power generation current value.
Based on the technical scheme, the formula for calculating the target power generation current value is as follows:
or->
Wherein,representing a target generated current value; />Representing an instantaneous power generation voltage value of the power generation device; />A gear current value is represented; />Representing the maximum generated power of the power generation device; />Indicating the maximum power generation voltage of the power generation device.
On the basis of the technical scheme, the number of the selectable gear current values is at least 3, including 7A, 9A and 11A.
On the basis of the technical scheme, the system further comprises: and the fault protection circuit is used for comparing the actual power generation current value with a preset protection current value, and sending a fault signal to the CPU control circuit if the actual power generation current value exceeds the preset protection current value.
On the basis of the technical scheme, the fault protection circuit is further used for comparing the instantaneous power generation voltage value with a preset protection voltage value, and if the instantaneous power generation voltage value exceeds the preset protection voltage value, the fault protection circuit sends a fault signal to the CPU control circuit.
On the basis of the technical scheme, the system further comprises: and the reset restarting circuit is connected with the CPU control circuit.
On the basis of the technical scheme, the system further comprises: and a power supply connected with the main power circuit.
Compared with the prior art, the invention has the advantages that: according to the method and the system for controlling the power generation current of the power generation device, the instantaneous power generation voltage value of the power generator is collected, the actual power generation current value is associated with the instantaneous power generation voltage value of the power generation device, the actual power generation current value is changed along with the change of the instantaneous power generation voltage value, the human body senses the change of the load, the stepping force for stepping on a bicycle is required to be provided, and the requirement of various motions of the human body is met.
Drawings
FIG. 1 is a flow chart of a method of controlling the generated current of a power generation device in an embodiment of the invention;
FIG. 2 is a schematic diagram of a system for controlling the generated current of a power generation device according to an embodiment of the present invention;
FIG. 3 is a diagram of a voltage acquisition circuit in an embodiment of the invention;
FIG. 4 is a circuit diagram of current collection in an embodiment of the invention;
FIG. 5 is a diagram of a CPU control circuit in an embodiment of the invention;
fig. 6 is a main power circuit diagram in an embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 1, an embodiment of the present invention provides a method for controlling a generated current of a power generation device, including the steps of:
step S1, collecting an instantaneous power generation voltage value and an actual power generation current value of a power generation device. Specifically, the power generation device can be understood as a man-power mechanical device formed by combining a pedal bicycle with a generator, and the power generation device is equivalent to the generator for convenience of subsequent expression. When the man power steps on the bicycle, the rotor of the generator rotates to generate electricity. The instantaneous power generation voltage value expression of the generator is as follows:
wherein,for the number of turns of the coil>For magnetic induction intensity->For coil area>Is the angular velocity of the rotor rotation.、/>And +.>The angular speed of the rotor rotation, i.e. the stepping speed of a person, is the known parameter, which affects the instantaneous power generation voltage value.
Step S2, a gear current value is obtained, and a target power generation current value is calculated according to the instantaneous power generation voltage value and the gear current value. Specifically, the formula for calculating the target generated current value is as follows:
or->
Wherein,representing a target generated current value; />Representing an instantaneous power generation voltage value of the power generation device; />A gear current value is represented; />Representing the maximum generated power of the power generation device; />Indicating the maximum power generation voltage of the power generation device.
Step S3, judging whether the difference value between the actual power generation current value and the target power generation current value exceeds a preset threshold value, and if not, generating power by using the current actual power generation current value; if yes, the actual power generation current value is adjusted until the difference value does not exceed the preset threshold value, and power generation is performed according to the adjusted actual power generation current value.
The method of controlling the generated current of the power generation device in the embodiment of the invention will be described below with a specific power generation example.
The calculation formula of the pedaling force of the pedaling bicycle is as follows:
wherein,is the stepping force; />Is a pedal arm; />The calculation formula of the electromagnetic torque is as follows:
wherein,is torque constant +.>For magnetic flux->The actual generated current value is that
In the above-mentioned method, the step of,、/>and +.>Are all constant, the pedal force of pedal bicycle is +.>Mainly by actual generated current valueAnd (5) determining.
Since the difference between the actual generated current value and the target generated current value is smaller than a preset threshold value, it can be generally understood that=/>The actual generated current expression of the power generation device is:
or->
When the gear of the single vehicle is selected, the corresponding gear current valueIs a fixed value, and the maximum power of the power generation deviceAnd maximum power generation voltage +.>Is a set or selected constant value. At this time, the faster the bicycle is stepped, i.e. the angular velocity at which the rotor rotatesThe larger the instantaneous power generation voltage value of the generator +.>The larger the actual generation current value of the power generation device +.>The larger the pedal force of the bicycle to be pedal is +.>The larger.
Compared with the prior art, the method for controlling the power generation current of the power generation device has the advantages that the instantaneous power generation voltage value of the power generator is collected, and if the instantaneous power generation voltage value is large, the angular speed of the rotation of the rotor of the power generator is high, so that the movement requirement of a human body is high. Meanwhile, the actual power generation current value is related to the instantaneous power generation voltage value of the power generation device, if the instantaneous power generation voltage value is larger, the actual power generation current value is larger, the human body feels larger load, and the pedal force for stepping on the bicycle more greatly needs to be provided, so that the requirement of more severe movement of the human body is met.
In addition, if the instantaneous power generation voltage value is moderate and constant, the angular speed of the rotation of the generator rotor is stable, the actual power generation current value is also stable, the human body feels that the load is balanced, the trampling force of the trampling bicycle is required to be constant, and the movement intensity of the human body is moderate.
If the instantaneous power generation voltage value is smaller, the angular speed of the rotation of the generator rotor is smaller, the actual power generation current value is also smaller, the human body feel load is smaller, the trampling force of the trampling bicycle is required to be smaller, the human body movement strength is smaller, and the human body feel leisure.
As a preferred embodiment, the gear current values in the embodiment of the present invention are at least 3, including 7A, 9A and 11A. Specifically, the power generation device is provided with a plurality of gears, each gear corresponds to one gear current, the actual power generation current expression of the power generation device shows that the instantaneous power generation voltage value is constant, the angular speed of the rotation of the generator rotor is constant, and if the gear current value is larger, the actual power generation current value is larger, and the human body feel larger load. Namely, under the same stepping speed, the human body with different gears senses different loads, and a stepping person can select the gear which accords with the stepping person according to physical ability or requirements to perform stepping movement. Multiple selectable gear current values provide a greater range of movement requirements.
Referring to fig. 2, an embodiment of the present invention further provides a system for controlling a generated current of a power generation device, including: the device comprises a voltage acquisition circuit, a current acquisition circuit, a CPU control circuit and a main power circuit.
Referring to fig. 3, a voltage acquisition circuit is used to acquire instantaneous power generation voltage values of a power generation device. Referring to fig. 4, a current acquisition circuit is provided for acquiring an actual generated current value of the power generation device. In particular, the power generation device may be understood as a man-power mechanical device formed by combining a stepping bicycle and a power generator, and when a man-power steps on the bicycle, a rotor of the power generator rotates to generate power. The instantaneous power generation voltage value expression of the generator is as follows:
wherein,for the number of turns of the coil>For magnetic induction intensity->For coil area>Is the angular velocity of the rotor rotation.、/>And +.>Is known asThe parameter affects the instantaneous power generation voltage value to be the angular speed of the rotor rotation, namely the stepping speed of a person.
Referring to fig. 5, the CPU control circuit is configured to acquire a gear current value and calculate a target power generation current value from the instantaneous power generation voltage value and the gear current value, and determine whether a difference between the actual power generation current value and the target power generation current value exceeds a preset threshold. Specifically, the formula for calculating the target generated current value is as follows:
or->
Wherein,representing a target generated current value; />Representing an instantaneous power generation voltage value of the power generation device; />A gear current value is represented; />Representing the maximum generated power of the power generation device; />Indicating the maximum power generation voltage of the power generation device.
Referring to fig. 6, the main power circuit is configured to: if the difference value does not exceed the preset threshold value, the main power circuit generates power according to the current value of the current actual power generation; if the difference value exceeds a preset threshold value, the main power circuit is used for adjusting the actual power generation current value until the difference value does not exceed the preset threshold value, and generating power according to the adjusted actual power generation current value.
A system for controlling the generation current of a power generation device in an embodiment of the present invention will be described below with a specific power generation example.
The calculation formula of the pedaling force of the pedaling bicycle is as follows:
wherein,is the stepping force; />Is a pedal arm; />The calculation formula of the electromagnetic torque is as follows:
wherein,is torque constant +.>For magnetic flux->The actual generated current value is that
In the above-mentioned method, the step of,、/>and +.>Are all constant, the pedal force of pedal bicycle is +.>Mainly by actual generated current valueAnd (5) determining.
Since the difference between the actual generated current value and the target generated current value is smaller than a preset threshold value, it can be generally understood that=/>The actual generated current expression of the power generation device is:
or->
When the gear of the single vehicle is selected, the corresponding gear current valueIs a fixed value, and the maximum power of the power generation deviceAnd maximum power generation voltage +.>Is a set or selected constant value. At this time, the faster the bicycle is stepped, i.e. the angular velocity at which the rotor rotatesThe larger the instantaneous power generation voltage value of the generator +.>The larger the actual generation current value of the power generation device +.>The larger the pedal force required to pedal the bicycle/>The larger.
Compared with the prior art, the system for controlling the power generation current of the power generation device has the advantages that the voltage acquisition circuit acquires the instantaneous power generation voltage value of the power generator, and if the instantaneous power generation voltage value is large, the angular speed of the rotation of the rotor of the power generator is high, so that the movement requirement of a human body is high. Meanwhile, the actual power generation current value is related to the instantaneous power generation voltage value of the power generation device, if the instantaneous power generation voltage value is larger, the actual power generation current value is larger, the human body feels larger load, and the pedal force for stepping on the bicycle more greatly needs to be provided, so that the requirement of more severe movement of the human body is met.
In addition, if the instantaneous power generation voltage value is moderate and constant, the angular speed of the rotation of the generator rotor is stable, the actual power generation current value is also stable, the human body feels that the load is balanced, the trampling force of the trampling bicycle is required to be constant, and the movement intensity of the human body is moderate.
If the instantaneous power generation voltage value is smaller, the angular speed of the rotation of the generator rotor is smaller, the actual power generation current value is also smaller, the human body feel load is smaller, the trampling force of the trampling bicycle is required to be smaller, the human body movement strength is smaller, and the human body feel leisure.
As a preferred embodiment, the gear current values in the embodiment of the present invention are at least 3, including 7A, 9A and 11A. Specifically, the power generation device is provided with a plurality of gears, each gear corresponds to one gear current, the actual power generation current expression of the power generation device shows that the instantaneous power generation voltage value is constant, the angular speed of the rotation of the generator rotor is constant, and if the gear current value is larger, the actual power generation current value is larger, and the human body feel larger load. Namely, under the same stepping speed, the human body with different gears senses different loads, and a stepping person can select the gear which accords with the stepping person according to physical ability or requirements to perform stepping movement. Multiple selectable gear current values provide a greater range of movement requirements.
As a preferred implementation manner, referring to fig. 2, the system for controlling the generated current of the power generation device in the embodiment of the present invention further includes a fault protection circuit, which is configured to compare an actual generated current value with a preset protection current value, and if the actual generated current value exceeds the preset protection current value, the fault protection circuit sends a fault signal to the CPU control circuit, and the CPU control circuit further locks the main power circuit to stop generating power, so as to ensure system safety.
Referring to fig. 2, the fault protection circuit is further configured to compare the instantaneous power generation voltage value with a preset protection voltage value, and if the instantaneous power generation voltage value exceeds the preset protection voltage value, the fault protection circuit sends a fault signal to the CPU control circuit, and the CPU control circuit further locks the main power circuit to stop generating power, so as to ensure system safety.
As a preferred implementation manner, referring to fig. 2, the system for controlling the generated current of the power generation device in the embodiment of the present invention further includes a reset restart circuit, which is connected to the CPU control circuit, and is configured to receive a reset instruction of an external module, and send a reset signal to the CPU control circuit, so as to reset and restart the system. When the system stops working for some reason, the reset restarting circuit assists the system to restart normally.
As a preferred implementation, referring to fig. 2, the system for controlling the generated current of the power generation device in the embodiment of the present invention further includes a power source connected to the main power circuit for receiving the electric energy generated by the power generation device and providing the electric energy to the system.
As a preferred implementation manner, referring to fig. 2, the system for controlling the generated current of the power generation device in the embodiment of the present invention further includes a communication circuit, which is connected to the CPU control circuit and is used for communicating with an external module, uploading data or receiving instructions.
In addition, referring to fig. 2, in order to store the electric energy generated by the power generation device, the system for controlling the generation current of the power generation device in the embodiment of the present invention is connected to an energy storage device for storing the electric energy generated by the power generation device.
The invention is not limited to the embodiments described above, but a number of modifications and adaptations can be made by a person skilled in the art without departing from the principle of the invention, which modifications and adaptations are also considered to be within the scope of the invention. What is not described in detail in this specification is prior art known to those skilled in the art.
Claims (7)
1. A method of controlling a generated current of a power generation device, comprising the steps of:
collecting an instantaneous power generation voltage value and an actual power generation current value of a power generation device;
acquiring a gear current value, and calculating a target power generation current value according to the instantaneous power generation voltage value and the gear current value; the formula for calculating the target generated current value is as follows:or->The method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>Representing a target generated current value; />Representing an instantaneous power generation voltage value of the power generation device; />A gear current value is represented; />Representing the maximum generated power of the power generation device; />Representing a maximum power generation voltage of the power generation device;
judging whether the difference value between the actual power generation current value and the target power generation current value exceeds a preset threshold value, and if not, generating power by using the current actual power generation current value; if yes, the actual power generation current value is adjusted until the difference value does not exceed the preset threshold value, and power generation is performed according to the adjusted actual power generation current value.
2. The method of controlling the generated current of a power generation device according to claim 1, wherein: the gear current values are at least 3, including 7A, 9A and 11A.
3. A system for controlling a generated current of a power generation device, comprising:
a voltage acquisition circuit for acquiring an instantaneous power generation voltage value of the power generation device;
a current acquisition circuit for acquiring an actual power generation current value of the power generation device;
a CPU control circuit for acquiring a gear current value and calculating a target power generation current value from the instantaneous power generation voltage value and the gear current value; the CPU control circuit is also used for judging whether the difference value between the actual power generation current value and the target power generation current value exceeds a preset threshold value; the formula for calculating the target generated current value is as follows:or->The method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>Representing a target generated current value; />Representing an instantaneous power generation voltage value of the power generation device; />A gear current value is represented; />Representing the maximum generated power of the power generation device; />Representing a maximum power generation voltage of the power generation device;
a main power circuit configured to: if the difference value does not exceed the preset threshold value, the main power circuit generates power according to the current value of the current actual power generation; if the difference value exceeds a preset threshold value, the main power circuit is used for adjusting the actual power generation current value until the difference value does not exceed the preset threshold value, and generating power by using the adjusted actual power generation current value;
the fault protection circuit is used for comparing the actual power generation current value with a preset protection current value, and if the actual power generation current value exceeds the preset protection current value, the fault protection circuit sends a fault signal to the CPU control circuit;
and the reset restarting circuit is connected with the CPU control circuit.
4. A system for controlling the generated current of a power generation device as claimed in claim 3, wherein: the gear current values are at least 3, including 7A, 9A and 11A.
5. A system for controlling the generated current of a power generation device as claimed in claim 3, wherein:
the fault protection circuit is also used for comparing the instantaneous power generation voltage value with a preset protection voltage value, and if the instantaneous power generation voltage value exceeds the preset protection voltage value, the fault protection circuit sends a fault signal to the CPU control circuit.
6. A system for controlling the generated current of a power generation device as set forth in claim 3, further comprising: and the reset restarting circuit is connected with the CPU control circuit.
7. A system for controlling the generated current of a power generation device as set forth in claim 3, further comprising: and a power supply connected with the main power circuit.
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