CN108331714B - Controllable drive generator system of electric sail - Google Patents
Controllable drive generator system of electric sail Download PDFInfo
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- CN108331714B CN108331714B CN201810267601.7A CN201810267601A CN108331714B CN 108331714 B CN108331714 B CN 108331714B CN 201810267601 A CN201810267601 A CN 201810267601A CN 108331714 B CN108331714 B CN 108331714B
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- 238000012544 monitoring process Methods 0.000 claims abstract description 64
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 238000010248 power generation Methods 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 9
- 230000002159 abnormal effect Effects 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 12
- 238000003491 array Methods 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 4
- 230000036541 health Effects 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 2
- 230000005856 abnormality Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/30—Wind motors specially adapted for installation in particular locations
- F03D9/32—Wind motors specially adapted for installation in particular locations on moving objects, e.g. vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H9/00—Marine propulsion provided directly by wind power
- B63H9/04—Marine propulsion provided directly by wind power using sails or like wind-catching surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1423—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with multiple batteries
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- H02J7/1461—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/143—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with multiple generators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Wind Motors (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses an electric sail controllable driving generator system which comprises a storage battery, a bidirectional DC/DC conversion module, a motor system, a fan, a sail detection module, an integrated controller, an energy monitoring module and the like. The invention integrates a motor and a fan impeller together, and designs a novel wind turbine generator structure. The invention controls the motor to work in the electric/power generation state under different wind conditions, and realizes the functions of electric sail navigation assistance, steering and power generation. The integrated structure of the motor and the fan impeller not only can reduce the cost, but also can save the space on the sail; meanwhile, the driving performance of the whole system is optimized through the control system.
Description
Technical Field
The invention relates to a driving/generating device comprehensively utilizing solar energy and wind energy, in particular to an electric sail controllable driving generator system.
Background
Along with the increasing serious problems of energy shortage and environmental pollution, people carry out the concept of green environmental protection in various industries. In the aspect of ship navigation, the current small-sized ships are mostly designed into streamline structures, driven by diesel engines, battery stacks and the like, the sail structure of the traditional ship is abandoned, the utilization of wind energy in the navigation process of the ship is ignored, and the waste of resources is caused. At present, the application of the multifunctional sails on modern ships is studied and developed successively by referring to the traditional sailing ships under the pressure of energy crisis in all countries of the world.
Disclosure of Invention
The invention aims to provide an electric sail controllable driving generator system aiming at the defect of wind energy utilization of a current ship upper sail, so that a motor can automatically work in an electric/power generation state under a complex wind condition, and the functions of navigation assistance, steering and power generation of the electric sail are realized.
To achieve the above object, the present invention is conceived as follows:
the invention relates to a controllable driving generator system of an electric sail, which integrates a motor and a fan impeller, controls the motor to work in an electric/power generation state under different wind conditions, and realizes the functions of navigation assistance, steering and power generation of the electric sail. The integrated structure of the motor and the fan impeller not only can reduce the cost, but also can save the space on the sail; meanwhile, the driving performance of the whole system is optimized through the control system. The controllable driving-generator system for effectively utilizing wind energy has important academic value and application value no matter optimizing the driving and cruising performance of the ship or improving the energy utilization efficiency.
According to the conception, the invention adopts the following technical scheme:
the electric sail controllable driving generator system comprises a storage battery, a bidirectional DC/DC conversion module, a motor system, a fan, a sail detection module, an integrated controller and an energy monitoring module, wherein the motor system and the fan form a wind turbine, the bidirectional DC/DC conversion module is respectively connected with the storage battery and the wind turbine, wind turbine arrays are symmetrically distributed on two sides of the sail, and the sail detection module is connected with the sail and the integrated controller; the integrated controller is connected with the wind turbine generator, the sail detection module and the energy monitoring module; the energy monitoring module is connected with the storage battery and the wind turbine generator; wherein,
the storage battery provides electric energy for the whole system and stores electric energy converted by the motor system;
the bidirectional DC/DC conversion module is used for boosting and reducing the charge and discharge voltage of the storage battery;
the motor system is used for controlling the operation of the motor according to a control signal sent by the integrated controller, judging the current running state and the health state of the system according to overvoltage, overcurrent and short-circuit signals fed back by the energy monitoring module, and protecting hardware in time when the system is abnormal or fails;
the fan is used for changing the air flow rate on the sail surface of the sail and converting the direction of the entering air flow into the axial direction;
wind turbine generator arrays are symmetrically distributed on two sides of the sail;
the sail detection module is used for detecting the wind direction and the wind speed of the sail and the inclination angle signals between the sail and the axis of the sail;
the integrated controller is used for receiving external wind speed, wind direction and sail inclination angle signals, controlling the motor to work in an electric or power generation state, and controlling the current working state of the motor system according to the electric parameters of the storage battery voltage, the residual electric quantity, the direct-current voltage and the direct-current of the inversion driving module, which are acquired by the energy monitoring module;
the energy monitoring module is used for monitoring the voltage of the storage battery, the residual electric quantity, the direct-current voltage and the direct-current of the inversion driving module and the temperature signal of the inverter radiator in real time.
The motor system comprises a motor, a position detection module, a driving control module, an inversion driving module and a braking protection module, wherein the position detection module is used for detecting rotor position information of the motor, the driving control module obtains three-phase current signals, three-phase voltage signals, motor output torque and rotating speed electrical parameters of the motor through a sampling circuit and a sensor, outputs PWM pulse width modulation signals, the inversion driving module is used for converting six paths of PWM pulse width modulation signals output by the driving control module into corresponding MOSFET driving signals, the MOSFET is antiparallel with diodes and is switched on and off according to the driving signals, and the braking protection module is used for judging whether an inverter circuit is abnormal or faulty according to direct current voltage, direct current and inverter radiator temperature signals of the inversion driving module fed back by the energy monitoring module and timely protecting hardware when the circuit is abnormal or faulty.
The sail detecting module comprises a wind direction detecting module for detecting the wind direction on the sail, a wind speed detecting module for detecting the wind speed on the sail and a sail inclination angle detecting module for detecting the inclination angle between the sail and the axis.
The integrated controller comprises a signal receiving module, a signal analyzing module, a monitoring protection module and a control module, wherein the signal receiving module is connected with the wind direction detection module, the wind speed detection module, the sail dip angle detection module and the position detection module, and the signal analyzing module is connected with the signal receiving module and is used for analyzing wind direction, wind speed change rate and sail dip angle signals; the monitoring protection module is connected with the energy monitoring module and is used for monitoring abnormal conditions of direct-current voltage, direct-current, inverter radiator temperature signals of the inverter driver fed back by the energy monitoring module and timely protecting software when a system is abnormal or fails; the control module is connected with the signal analysis module and the monitoring protection module and is used for controlling the motor to work in an electric/power generation state according to the external wind speed, the wind direction and the wind sail inclination angle signals acquired by the wind sail detection module, and the running group number and the motor rotating speed of the wind turbine generator system array are automatically adjusted by carrying out fuzzification and defuzzification processing on the calculated wind speed change rate.
The energy monitoring module comprises a storage battery monitoring module, an inverter abnormality monitoring module and a temperature monitoring module, wherein the storage battery monitoring module is used for monitoring voltage and electric quantity information of a storage battery in real time, the inverter abnormality monitoring module is used for monitoring direct-current voltage and direct-current information of an inverter driver in real time, sending an alarm signal to the integrated controller when overvoltage, overcurrent or short-circuit abnormality or fault occurs in the inverter driver, and the temperature monitoring module is used for monitoring temperature of an inverter radiator in real time and sending the alarm signal to the integrated controller when the temperature is too high.
In the wind turbine generator, she Weiduan of an impeller of a fan is fixed on the inner surface of a hollow rotor of a motor, a blade tip points to the center of a circle, the outer surface of the hollow rotor is connected with the inner ring of a bearing, the outer ring of the bearing is connected with a stator, and the radius of the bearing is slightly larger than that of the hollow rotor and slightly smaller than that of the stator.
Compared with the prior art, the invention has the following obvious outstanding substantive and technical progress:
the invention effectively converts wind energy captured by the fan impeller into electric energy, improves the cruising ability of the system and has practicability.
The invention utilizes the sensor and the sampling circuit to obtain the parameter information such as the external wind speed, the wind direction, the sail inclination angle, the battery voltage, the direct-current voltage and the direct-current of the inversion driver, and the like, and the detection method is simple, can monitor in real time, is easy to realize digital control and has feasibility.
The invention carries out fuzzification and defuzzification treatment on the outside wind speed information through the integrated controller, and adaptively adjusts the number of wind turbines and the motor rotating speed which work at both sides of the sail surface, thereby realizing the autonomous steering and navigation aiding functions of the sail and having advancement.
The invention provides a novel design scheme of the wind turbine with small volume and material saving by integrating the motor and the fan impeller, and simultaneously realizes that the wind turbine is used as an executing component for electric drive and a generating component for electric energy, thereby having innovation.
Drawings
FIG. 1 is a schematic diagram of the system principle of the present invention.
Fig. 2 is a schematic diagram of an electric motor system.
Fig. 3 is a circuit diagram of the inverter driving module.
FIG. 4 is a schematic diagram of an energy monitoring module.
Fig. 5 is a schematic diagram of a wind turbine.
FIG. 6 is a schematic diagram of an array structure of a wind turbine.
FIG. 7 is a flow chart of fuzzy control software for a wind turbine array.
Detailed Description
In order to make the technical scheme and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, an electric sail controllable drive generator system includes 8 modules, such as a battery 10, a bi-directional DC/DC conversion module 20, a motor system 30, a blower 40, a sail 50, a sail detection module 60, an integrated controller 70, and an energy monitoring module 80. The motor system 30 and the fan 40 form a wind turbine, the bidirectional DC/DC conversion module 20 is respectively connected with the storage battery 10 and the wind turbine, wind turbine arrays are symmetrically distributed on two sides of the wind sail 50, and the wind sail detection module 60 is connected with the wind sail 50 and the integrated controller 70; the integrated controller 70 is connected with the wind turbine generator, the sail detecting module 60 and the energy monitoring module 80; the energy monitoring module 80 is connected with the storage battery 10 and the wind turbine generator; wherein the battery 10 supplies electric power to the whole system and also stores electric power converted by the motor. The bidirectional DC/DC conversion module 20 is used for increasing and decreasing the charge and discharge voltage of the battery. The motor system 30 is configured to control operation of the motor according to a control signal sent by the integrated controller, and determine a current running state and a health state of the system according to signals such as overvoltage, overcurrent, short circuit and the like fed back by the energy monitoring module, and protect hardware in time when an abnormality or a fault of the system occurs. The fan 40 is used to change the air flow rate on the sail surface and to turn the incoming air flow direction into an axial direction. The sail 50 is used for symmetrically distributing fan and motor arrays on two sides. The sail detecting module 60 is configured to detect signals such as a wind direction on the sail, a wind speed, and an inclination angle between the sail and the shaft center. The integrated controller 70 is configured to receive signals such as an external wind speed, a wind direction, a sail inclination angle, etc. and control the motor to operate in an electric and a power generation state, and control a current operating state of the motor system 30 according to the electric parameters such as the battery voltage, the residual electric quantity, the dc voltage, the dc current, etc. of the inverter driver, which are obtained by the energy monitoring module. The energy monitoring module 80 is used for monitoring signals such as the voltage of the storage battery, the residual electric quantity, the direct current voltage of the inverter driver, the direct current, the temperature of the inverter radiator and the like in real time.
As shown in fig. 2, the motor system 30 includes a motor 31, a position detection module 32, a drive control module 33, an inverter drive module 34, and a brake protection module 35. The position detection module 32 is configured to detect motor rotor position information. The drive control module 33 obtains electrical parameters such as a motor three-phase current signal, a motor three-phase voltage signal, a motor output torque, a motor rotation speed and the like through a sampling circuit and a sensor, and outputs a PWM pulse width modulation signal. The inversion driving module 34 is used for converting the 6 paths of PWM modulation signals output by the driving control module 33 into corresponding MOSFET driving signals, and the MOSFET is connected with the diode in anti-parallel and is turned on and off according to the driving signals. The brake protection module 35 is configured to determine whether the inverter circuit is abnormal or faulty according to the signals such as the dc voltage, the dc current, the inverter radiator temperature, etc. of the inverter driver fed back by the energy monitoring module, and to protect hardware in time when the circuit is abnormal or faulty.
As shown in fig. 3, the inverter driving module 34 employs 6 MOSFET transistors. (1) In the inversion driving module 34, the MOSFET Q4/Q5/Q6 of the lower bridge arm is directly driven by the PWM output port of the driving control module, and when the driving circuit of the upper bridge arm is effective, the gate voltage of the MOSFET Q1/Q2/Q3 must not be lower than 27V, and the voltage doubling rectifying circuit provides 2 times of the power supply voltage, so as to ensure that the power tube is fully turned on. (2) The resistance value between the gate and the source of the MOSFET is very large, and only a small amount of static electricity can generate very high voltage at two ends of the equivalent capacitance between the gate and the source, and the voltage can break down a very thin gate-source oxide layer. Therefore, the parallel resistor between the grid sources discharges the electricity of the junction capacitor, and the voltage between the grid sources is controlled by the parallel voltage stabilizing tube to be not more than20V. In this embodiment, the resistors R3, R7, R11, R14, R17, R20 in the driving circuit are protection resistors, and the 15V voltage stabilizing tubes DZ1, DZ2, DZ3, DZ4, DZ5, DZ6 are protection diodes. (3) If the MOSFET is directly driven, the power tube is turned on and off rapidly, and the power tube may be subjected to excessive high load>And cause erroneous conduction, so a resistor is connected in series between the gate of the MOSFET and the driver chip. R13, R16 and R19 in the driving circuit are grid current limiting resistors. (4) Although the breakdown voltage of the MOSFET drain and source is generally large, if the drain and source are not protectedThe circuit may also generate drain spike voltage at the instant of switching the device, thereby damaging the MOSFET. Therefore, an RC circuit is added between the drain electrode and the source electrode of the power tube to protect the drain electrode and the source electrode of the power tube.
As shown in fig. 4, the energy monitoring module 80 includes a battery monitoring module 81, an inverter abnormality monitoring module 82, and a temperature monitoring module 83. The battery monitoring module 81 is used for monitoring information such as battery voltage and electric quantity in real time. The inverter abnormality monitoring module 82 is configured to monitor information such as dc voltage and dc current of the inverter driver in real time, and send an alarm signal to the integrated controller when an abnormality or a fault such as overvoltage, overcurrent, short circuit occurs in the inverter driver. The temperature monitoring module 83 is used for monitoring the temperature of the inverter radiator in real time and sending an alarm signal to the integrated controller when the temperature is too high.
As shown in fig. 5, the wind turbine generator includes a motor stator 100, a bearing 200, a hollow rotor 300 and an impeller 400, wherein the tail end of the impeller 400 is fixed on the inner surface of the hollow rotor 300 of the motor 31, and the tip of the blade points to the center of the circle. The outer surface of the hollow rotor 300 is connected with the inner ring of the bearing 200, and the outer ring of the bearing 200 is connected with the stator 100. The radius of the bearing 200 is slightly larger than the radius of the hollow rotor 300 and slightly smaller than the radius of the stator 100.
As shown in FIG. 6, the wind turbine arrays are symmetrically distributed on both sides of the sail surface and the motor system 30 and the wind turbine 40 are integrated together. The integrated controller 70 controls the motor to operate in an electric/power generation state according to the received signals of the outside wind speed, the wind direction, the sail pitch angle, etc. When the wind direction is easy to change or the wind speed is low, the integrated controller 70 controls the motor to work in an electric state, the motor is controlled to drive the impeller to rotate through the power supply of the storage battery, and meanwhile, the integrated controller 70 can automatically adjust the running group number of the motor array and the motor rotating speed according to the received signals such as the outside wind speed, the wind direction, the sail dip angle and the like; when the wind condition is good, the integrated controller 70 controls the motor to work in a power generation state, and the impeller drives the motor to rotate, so that wind energy is converted into electric energy.
As shown in fig. 7, intelligent fuzzy control of the wind turbine generator array is completed by an integrated controller, and a regular self-tuning PID control algorithm is adopted to perform process control. The sail detection module monitors signals such as wind direction, wind speed, sail inclination angle and the like in real time and inputs the signals into the integrated controller. The integrated controller establishes a fuzzy rule table according to the signals of wind speed, wind speed change rate, sail dip angle change rate and the like, calculates control quantity through the fuzzy rule table, sends control signals to the fan and the motor array, and controls the running group number of the motor arrays at two sides of the sail and the motor rotating speed. The main flow chart of the software is: the wind sail detecting module is utilized to obtain analog signals of wind speed and wind sail inclination angle, the analog signals are input to the integrated controller after A/D conversion, and the integrated controller carries out scale conversion and change rate calculation on the input signals to obtain digital signals of wind speed, wind speed change rate, wind sail inclination angle change rate and the like. And calculating input quantity according to membership functions of deviation and deviation change rate, obtaining output control quantity by a fuzzy PID self-tuning control algorithm, and sending control signals to the fan and the motor array to realize intelligent fuzzy control of the fan and the motor array.
It should be understood that in the embodiment of the present invention, 6 wind turbines are used, and so on, 2n wind turbines such as 2, 4, 8, 10, etc. are all included in the protection scope of the appended claims. In the embodiment of the invention, the inversion driving module powered by the 24V storage battery is used, and the inversion driving module powered by 8V storage battery, 12V storage battery, 48V storage battery, 96V storage battery and other storage battery voltages are all included in the protection scope of the appended claims. Modifications and variations may occur to those skilled in the art in light of the foregoing description, and all such modifications and variations are intended to be included within the scope of the following claims.
Claims (4)
1. The electric sail controllable driving generator system is characterized by comprising a storage battery (10), a bidirectional DC/DC conversion module (20), a motor system (30), a fan (40), a sail (50), a sail detection module (60), an integrated controller (70) and an energy monitoring module (80), wherein the motor system (30) and the fan (40) form a wind turbine generator, the bidirectional DC/DC conversion module (20) is respectively connected with the storage battery (10) and the wind turbine generator, wind turbine generator arrays are symmetrically distributed on two sides of the sail (50), and the sail detection module (60) is connected with the sail (50) and the integrated controller (70); the integrated controller (70) is connected with the wind turbine generator, the wind sail detection module (60) and the energy monitoring module (80); the energy monitoring module (80) is connected with the storage battery (10) and the wind turbine generator; wherein,
the storage battery (10) provides electric energy for the whole system and stores electric energy converted by the motor system (30);
the bidirectional DC/DC conversion module (20) is used for boosting and reducing the charge and discharge voltage of the storage battery (10);
the motor system (30) is used for controlling the operation of the motor according to a control signal sent by the integrated controller (70), judging the current running state and the health state of the system according to overvoltage, overcurrent and short-circuit signals fed back by the energy monitoring module (80), and protecting hardware in time when the system is abnormal or fails;
the fan (40) is used for changing the air flow rate on the sail surface of the sail (50) and converting the direction of the entering air flow into the axial direction;
wind turbine generator arrays are symmetrically distributed on two sides of the sail (50);
the sail detection module (60) is used for detecting the wind direction and the wind speed on the sail (50) and the inclination angle signals between the sail and the axis of the sail;
the integrated controller (70) is used for receiving external wind speed, wind direction and sail inclination angle signals, controlling the motor (31) to work in an electric or power generation state, and controlling the current working state of the motor system (30) according to the electric parameters of the voltage, the residual electric quantity of the storage battery (10) and the direct-current voltage and the direct-current of the inversion driving module (34) obtained by the energy monitoring module (80);
the energy monitoring module (80) is used for monitoring the voltage and the residual electric quantity of the storage battery (10), the direct-current voltage and the direct-current of the inversion driving module (34) and the temperature signal of the inverter radiator in real time;
the motor system (30) comprises a motor (31), a position detection module (32), a drive control module (33), an inversion driving module (34) and a brake protection module (35), wherein the position detection module (32) is used for detecting rotor position information of the motor (31), the drive control module (33) acquires three-phase current signals, three-phase voltage signals, motor output torque and electric parameters of rotating speed of the motor (31) through a sampling circuit and a sensor, PWM pulse width modulation signals are output, the inversion driving module (34) is used for converting six PWM pulse width modulation signals output by the drive control module (33) into corresponding MOSFET tube driving signals, the MOSFET tubes are connected in anti-parallel with diodes and are turned on and off according to the driving signals, and the brake protection module (35) is used for judging whether an inverter circuit is abnormal or not and protecting hardware timely when the circuit is abnormal or fails according to direct current voltage, direct current and inverter radiator temperature signals of the inversion driving module (34) fed back by the energy monitoring module (80);
the sail detecting module (60) comprises a wind direction detecting module (61) for detecting the wind direction on the sail, a wind speed detecting module (62) for detecting the wind speed on the sail, and a sail inclination angle detecting module (63) for detecting the inclination angle between the sail and the axis.
2. The electric sail controlled drive generator system of claim 1, wherein the integrated controller (70) includes a signal receiving module (71), a signal analyzing module (72), a monitoring protection module (73) and a control module (74), the signal receiving module (71) being connected to the wind direction detecting module (61), the wind speed detecting module (62), the sail pitch angle detecting module (63) and the position detecting module (32), the signal analyzing module (72) being connected to the signal receiving module (71) for analyzing the wind direction, the wind speed change rate and the sail pitch angle signal; the monitoring and protecting module (73) is connected with the energy monitoring module (80) and is used for monitoring abnormal conditions of direct-current voltage, direct-current, inverter radiator temperature signals of the inverter driver fed back by the energy monitoring module (80) and timely protecting software when a system is abnormal or fails; the control module (74) is connected with the signal analysis module (72) and the monitoring protection module (73) and is used for controlling the motor (31) to work in an electric/power generation state according to the external wind speed, the wind direction and the wind sail inclination angle signals acquired by the wind sail detection module (60), and the running group number and the motor rotating speed of the wind turbine generator system array are autonomously adjusted by carrying out fuzzification and defuzzification processing on the calculated wind speed change rate.
3. The electric sail controlled drive generator system of claim 1, wherein the energy monitoring module (80) includes a battery monitoring module (81), an inverter anomaly monitoring module (82) and a temperature monitoring module (83), the battery monitoring module (81) is configured to monitor voltage and power information of the battery (10) in real time, the inverter anomaly monitoring module (82) is configured to monitor dc voltage and dc current information of the inverter drive in real time, and send an alarm signal to the integrated controller (70) when an overvoltage, overcurrent or short circuit anomaly or fault occurs in the inverter drive, and the temperature monitoring module (83) is configured to monitor the temperature of the inverter radiator in real time, and send an alarm signal to the integrated controller (70) when the temperature is too high.
4. The electric sail controlled drive generator system of claim 1, wherein the wind turbine includes a motor stator (100), a bearing (200), a hollow rotor (300) and an impeller (400), wherein the impeller (400) She Weiduan is fixed on the inner surface of the hollow rotor (300) of the motor (31), and the blade tip is directed toward the center of the circle; the outer surface of the hollow rotor (300) is connected with the inner ring of the bearing (200), and the outer ring of the bearing (200) is connected with the stator (100); the radius of the bearing (200) is slightly larger than that of the hollow rotor (300) and slightly smaller than that of the stator (100).
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| CN111577537A (en) * | 2020-05-13 | 2020-08-25 | 上海海事大学 | Marine power-generating rotary sail navigation aid system and method |
| CN114825511B (en) * | 2022-03-24 | 2023-01-31 | 广州先觉电子信息股份有限公司 | Charge-discharge balancing device with new energy automobile battery pack monitoring system |
| CN114852310A (en) * | 2022-07-05 | 2022-08-05 | 南通格霖海事工程有限公司 | Rotary air duct for ship |
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