104results about How to "Improve power generation quality" patented technology

The invention relates to a wind collecting vertical type wind power generating system which comprises a wind power system, a vertical type speed increaser, a vertical type generator and an excitation grid-connected control system, wherein the wind power system is connected with the speed increaser and the generator by a chain coupling; the generator is controlled by the excitation grid-connected control system; the wind power system is in a box frame structure and comprises a fan blade system and a wind collecting and protecting system; the upper end and the lower end of a box frame are respectively provided with an upper shed top and a lower shed plate; the wind collecting and protecting system comprises a plurality of wind collecting plates which are distributed at four sides of the box frame and hydraulic drive equipment; the upper shed top, the lower shed plate and the wind collecting plates are connected to form a wind tunnel box type wind collecting body; the generator works in a multi-winding pole-changing control way; and the generator and the speed increaser are installed on the ground. The invention has the advantages of small size, low installation, maintenance and transportation cost, high wind power utilization ratio and wind field land utilization ratio, stable performance, high storm wind resistance and favorable power generating quality and grid-connected performance, can form a high-power wind power generator unit system and is suitable for various weather and geographic environments.

The invention discloses a tuning quality damper vibration reduction control device used in a wind turbine, which relates to tuning quality damper vibration reduction control technology. The invention is arranged inside a tower arranged at an upper end of a wind generator and comprises a platform, rotation adjusting devices, a power device, a quality block assembly and a damper arranged on the platform; the platform is fixed on the internal wall of the tower; the key design points of the invention are characterized in that: the power of the power device drives the quality block assembly to rotate through the rotation adjusting devices so that the components on the platform can rotate synchronously along with the yaw of the wind turbine. Opposite direction adjustment can be realized forwardly along with wind directions by the invention, thus controlling vibration amplitude to the utmost extent. Furthermore, based on MTMD vibration reduction mechanism, the invention also provides an MTMD technical proposal with a plurality of single TMDs arranged from top to bottom in sequence; the power device coaxially drives varied rotation adjusting devices, thus guaranteeing the synchronous rotation speed of each turntable and controlling the vibration of the tower within a frequency band scope caused by the rotation of wind wheels.

The invention discloses a multi-axial point absorption type wave energy generation device. A rack is embedded on one side of a first swing, a first shaft provided with a gear is mounted on two sides of the first swing, the rack and the gear are engaged, a float is fixedly connected at the lower end of the rack, and the first shaft is connected to a first generator through a gearbox; a second swing of a square frame sleeves outside the first swing, a second shaft is rotatably connected to one side of a second swing, a third shaft is rotatably connected to the other side of the second swing, and the second shaft is connected to a second generator through a second gearbox; a base of the square frame sleeves outside the second swing, a fourth shaft is rotatably connected to one side of the base, and a fifth shaft is rotatably connected to the other side of the base; the fourth shaft is connected to a third generator through a third gearbox. By the aid of the multi-axial point absorption type wave energy generation device, wave energy of multiple waves can be directionally captured simultaneously, once energy capture of the device is increased greatly, system converting efficiency is improved greatly, energy output of the device can be more stable, and generating quality can be improved.

The invention discloses a current-type multi-level converter system for wind power integration. The system is characterized by comprising a main circuit and a control circuit, wherein the main circuit comprises a rectifier circuit and an inverter circuit. The system has the advantages that: the multi-level converter system has the characteristics of large power capacity, low switch frequency, small output harmonic, high electromagnetic compatibility and the like, the output performance of the converter system is improved while the capacity is increased, and the output current of a current source-type converter is easy to control; overcurrent and short-circuit protection is easy to realize and the work is more stable and reliable; direct current-side inductance has a function of increasingvoltage, the front-end power supply voltage is allowed to be relatively low, and therefore the range of available wind speed is expanded; meanwhile, the topology of the current-type converter is relatively simple and thus the cost of a wind power system is reduced.

The invention relates to the technical field of power generation by using float glass melting furnace waste heat, aiming to solve the technical problems of low waste heat utility efficiency, low powergeneration efficiency, poor system stability, large heat recovery cost, large fluctuation range of waste gas and waste heat parameter, serious environment pollution, high cost of once investment andthe like when using waste heat in the traditional float glass melting furnace. The gas outlets of a plurality of float glass melting furnaces of the invention are communicated with the gas inlets of aplurality of parallel connection waste heat boilers, and the gas outlets of the waste heat boilers are communicated with a chimney; the water outlet of a boiler water feed pump is respectively communicated with the circulation water inlets of a plurality of parallel connection waste heat boilers, the vapor outlets of a plurality of parallel connection waste heat boilers are communicated with a gas collection cylinder, the outlet of the gas collection cylinder is communicated with the vapor inlet of a steam turbine, and the steam turbine is connected with a generator; and the steam discharge pipe of the steam turbine is connected with a condensate water system which is communicated with the water inlet end of the boiler water feed pump via a deaerating device. The invention is suitable fortwo or more than two float glass melting furnaces to perform waste heat power generation.

The invention discloses a gray combined modeling and optimized vibration controlling method of a large intelligent draught fan blade system. The method comprises the following steps that firstly, wind tunnel test data are collected, blade aerodynamic characteristic data are collected and obtained by designing a blade wing-shaped aerodynamic test, an appropriate intelligent driver is selected, and input and output signals of the driver are collected and obtained by designing the aerodynamic test of the blade intelligent driver; secondly, a blade aerodynamic stall model based on the test data is established; thirdly, a gray model of the intelligent driver is established; fourthly, a gray combined model of the large intelligent draught fan blade system is established; and fifthly, based on a model predicting control method, a controller is designed according to the gray combined model, established in the fourth step, of the large intelligent draught fan blade system, and the optimized vibration control over large intelligent draught fan blades for restraining the indeterminate interference is achieved. The method is advanced and scientific, safe and stable running of the large draught fan blades is guaranteed, and the effects of improving the power generating quality of a large draught fan and the like are achieved.

The invention discloses a vehicle-mounted hydraulic constant-speed power generation system. The vehicle-mounted hydraulic constant-speed power generation system is composed of a hydraulic pump set formed by connecting a variable pump and an external oil supplement pump in series. The hydraulic pump set is connected with a vehicle-mounted engine for driving the hydraulic pump set and is further connected with a power generation unit, and the power generation unit is composed of a constant-speed hydraulic motor and a permanent magnet power generator and is connected with electric equipment through an inverter. The variable pump and the constant-speed hydraulic motor form a closed type hydraulic system. The invention further discloses a power generation method. According to the power generation method, the vehicle-mounted engine drives the hydraulic pump set, the variable pump provides hydraulic oil for the constant-speed hydraulic motor so as to drive the permanent magnet power generator to work, the variable pump and the constant-speed hydraulic motor form the closed system, and the external oil supplement pump provides oil flow and supplement oil and dissipate heat for the closed system. The vehicle-mounted hydraulic constant-speed power generation system has the advantages of being easy to manufacture, reliable in performance, small in size, light in weight, capable of generating power in a driving mode or a parking mode and high in power generation quality.

The invention discloses a floating pendulum-type wave power generation system with single cylinder acting in a full cycle. The floating pendulum-type wave power generation system comprises a double-acting hydraulic cylinder, a base, a floating body and two connecting rods, wherein the floating body is in a hollow sealed structure; one end of each connecting rod is welded to the floating body, and the other end of the corresponding connecting rod is hinged to a rear-end horizontal rod of the base, so that the floating body swings around supporting points along with the fluctuation of waves; one end with a rod, of the double-acting hydraulic cylinder, is hinged to the floating body; the other end without a rod, of the double-acting hydraulic cylinder, is hinged to a front-end horizontal rod of the base; and the piston rod of the double-acting hydraulic cylinder is driven by the swing of the floating body to stretch out and draw back, so that the mechanical energy of the swing of the floating body is converted into hydraulic energy, and the hydraulic energy is transmitted to an electric generator to generate electricity. According to the floating pendulum-type wave power generation system disclosed by the invention, through the design of mechanical transmission, wave energy can be stably absorbed, so that damage to a device, which is caused by the impact of great wave, can be avoided; and through the design of a hydraulic system, the purpose that single cylinder acts in full cycle can be realized, the acting time of wave energy can be doubled, energy output is stable, influences caused by the impact of the wave are reduced, and electricity generating quality is high. The floating pendulum-type wave power generation system is good in technical effect.

The invention relates to a fan. The fan comprises a blade, a hub connected with the blade, a hydraulic transmission mechanism and a synchronous generator, wherein the blade is arranged on the hub; the input end of the hydraulic transmission mechanism is connected with the output end of the hub; and the output end of the hydraulic transmission mechanism is connected with the synchronous generator. The original gear box is replaced by the hydraulic transmission mechanism, so that the power generation frequency of the synchronous generator is 50Hz, inversion is avoided, direct Internet surfing is realized, and the fan has the advantages of light weight, a few parts and high reliability and power generation quality.

The invention discloses a difference optimization control method of a directly-driven permanent magnet synchronous wind power generation system. The difference optimization control method of the directly-driven permanent magnet synchronous wind power generation system is characterized by utilizing an electric energy structure of a back-to-back full power variable flow, respectively establishing astate space model for a machine-side converter control system and a network-side converter control system, stacking the product of the absolute values of the tracking errors of the machine-side converter control system and the network-side converter control system in the directly-driven permanent magnet synchronous wind power generation system and the time and the weight of the total harmonic wavedistortion rate of the output voltage waveform of the system, and taking the stacking result as the fitness function of evaluating the control performance, designing a difference optimization controlmethod based on real number encoding, and realizing optimization of PI controller parameters in the directly-driven permanent magnet synchronous wind power generation system. The difference optimization control method of the directly-driven permanent magnet synchronous wind power generation system can effectively improve the working efficiency and the power generation quality of the directly-driven permanent magnet synchronous wind power generation system, and the energy conversion efficiency and operation reliability of the wind power generation set, and can guarantee that the directly-driven permanent magnet synchronous wind power generation system is shorter in the stable time, is smaller in the steady state error and is higher in the robustness when the power grid is disturbed.

The invention discloses a capacity matching optimization method of a wind power generation and photothermal power generation system. By the capacity matching optimization method, the problem of capacity optimization and configuration of the wind power generation and photothermal power generation system is solved, and the capacity matching optimization method is used for mathematical modeling and optimization target and rule setting by a unified power generation system and is an optimization and configuration calculation method developed on the basis of an Matlab platform. The capacity matchingoptimization method comprises the steps of (a), acquiring all-year wind speed data, system power generation target data and system constraint condition data; (b), calculating wind power generation power and photothermal power generation data of an initial power generation system per hour according to a unified power generation system mathematical model; (c), calculating a fluctuation rate according to the constraint condition, a target value and the optimization rule; (d) changing capacity of a wind power generation system and a photothermal power generation system according to the set step length, repeating the steps (b) and (c), stopping calculation until minimum fluctuation ratio is solved, and outputting the capacity of the wind power system, the capacity of the photothermal power generation system and a ratio value between the capacities. By the capacity matching optimization method, the capacity optimization and configuration under minimum unified output fluctuation of the windpower generation and photothermal power generation system can be achieved.

The invention discloses a wind energy/wave energy integrated power generation device and a power generation method thereof. The wind energy/wave energy integrated power generation device comprises a hollow pile; the bottom of the hollow pile is inserted into the bottom of the sea, and the top of the hollow pile extends out of the surface of the sea; wind driven generator blades are installed on the top of a tower; electricity generated by a wind driven generator is transmitted to a controller in the tower; the controller supplies power to various components in the wind driven generator; the controller is also electrically connected with an external grid through a cable; the hollow pile is sleeved with a water storage pool; the top of the water storage pool is located above the surface of the sea; a rising slope is arranged between the surface of the sea and the top of the water storage pool; the bottom of the water storage pool is below the surface of the sea; a descending slope is arranged between the surface of the sea and the bottom of the water storage pool; the rising slope and the descending slope are in butt joint with each other so as to form an ice-resisting cone; the upper part of the water storage pool is open; two or more water-discharging holes are formed in the bottom of the water storage pool; and water turbines are installed in the water-discharging holes respectively. According to the power generation device of the invention, a relatively mature offshore wind power technology and a wave energy power generation technology with a great development potential are combined together so as to form a complementary power generation system, and therefore, grid-connected power generation can be realized with high possibility; offshore wind energy foundation pilesare effectively utilized; and a wave energy generation device and a wind energy power generation device share one set of power transmission system, and therefore, the power generation cost of the waveenergy power generation device can be decreased.

The invention discloses a magnetic field modulation principle-based double-rotor and double-winding cylindrical linear generator, belongs to the field of linear generators for wave power generation and aims at solving the problem that an existing direct-driven wave power generation system is relatively poor in power generation quality. The magnetic field modulation principle-based double-rotor and double-winding cylindrical linear generator comprises a casing, a double-winding stator, a permanent-magnet rotor, a modulation rotor, a permanent-magnet rotor output shaft and a modulation rotor output shaft, wherein the double-winding stator is fixed on the inner circle surface of the casing; the modulation rotor and the permanent-magnet rotor are sequentially arranged in the double-winding stator from outside to inside; the permanent-magnet rotor is fixed on the permanent-magnet rotor output shaft; the modulation rotor is located between the double-winding stator and the permanent-magnet rotor; two ends of the modulation rotor extend outside from end covers at two sides of the casing separately; the extension part at the left side is taken as the modulation rotor output shaft; and the axis of the modulation rotor output shaft overlaps with that of the permanent-magnet rotor output shaft.

The invention relates to a three-stage brushless micro gas turbine electricity generation grid-connecting device and a grid connecting method, belonging to the technical field of gas turbine electricity generation. The invention can improve the grid connecting speed and electricity generation quality and effectively reduce the impact on an electricity grid in grid connecting. The three-stage brushless micro gas turbine electricity generation grid-connecting device comprises a microprocessor; the output end of a micro gas turbine is connected with an IGBT chopper circuit via a rectifier circuitand a filter circuit, and the IGBT chopper circuit is connected with an inverter; a PWM output interface is connected with the IGBT chopper circuit and an enabling end of the inverter via an IGBT drive circuit, and an electricity grid feed control signal is connected with an power energy input port via a feed device; a detection device is connected with an A/D conversion module via an analog input channel; a phase coordination control signal is connected with a phase coordinator; and a voltage measuring transformator is connected with a phase-locked loop frequency multiplication circuit and acapture port via a shaping circuit, and the phase-locked frequency multiplication circuit is connected with an external interrupt pin of the microprocessor. The grid connecting method adopts grid side voltage feed control, rectification side IGBT chopping control, phase coordination control, inversion side direct frequency control and current tracking control.

The present invention relates to a green solar energy and wind energy power supply equipment, its principle, structure and working method. It is composed of solar battery, wind-driven generator and green energy storage equipment. Said green energy storage equipment is formed from front box body, middle box body and rear box body. In the front box body an input and output wiring board is set, on said input and output wiring board a relay and a diode are mounted, on the box bottom an engine and a power generator are mounted, in the middle box are respectively mounted a rotation energy input device formed from gear assembly and one-way rotation controller and an energy output device formed from gear assembly and brake device, and in the rear box body is set a scrolled spring assembly formed from several scrolled springs and matched correspondent tray wheel, central shaft and gear. Said invention also provides its working principle and concrete operation method.

The invention relates to the field of new energy, in particular to a convenient-to-adjust solar photovoltaic panel. The solar photovoltaic panel comprises a supporting mounting plate which is horizontally arranged, a plurality of fixed mounting frames are arranged on the lower end edge of the supporting mounting plate at equal angles; fixed mounting cylinders are vertically arranged on the fixed mounting frames; a lifting mounting plate is horizontally arranged over the supporting mounting plate, a rotary mounting plate is horizontally arranged right above the lifting mounting plate; a transmission mounting cavity is vertically formed in the middle position of the supporting mounting plate; the lifting of a stud and a screw cylinder is controlled, the steering control of a gear ring is realized, the swing control is achieved through swing telescopic structures arranged at equal angles, so that the angle, the height and the steering direction of a photovoltaic power generation device can be efficiently and accurately adjusted, the photovoltaic power generation efficiency and quality of the device are remarkably improved, and the maintainability and the operation stability of the device are improved through flow guide heat dissipation and interchangeable installation.

The invention relates to a power station, in particular to a new energy hybrid power station with a cascaded steam turbine, which comprises a steam generator and a main steam turbogenerator. The main steam turbogenerator is connected to a steam output end of the steam generator, a main steam pressure stabilizer is disposed between the steam generator and the main steam turbogenerator, a medium input end of the steam generator is connected to a high-boiling-point medium tank via a pipe and a liquid pump, a tail gas heater is mounted on a flue, a medium input end of the tail gas heater is connected to a low-boiling-point medium tank via a pipe and a liquid pump, and a medium output end of the tail gas heater is connected to an auxiliary steam turbogenerator via a pipe and an auxiliary steam pressure stabilizer; and the auxiliary steam turbogenerator is provided with an auxiliary steam recovery pipe, the auxiliary steam recovery pipe is connected to the low-boiling-point medium tank via an auxiliary condenser and a ground source condenser, the auxiliary condenser is mounted at the bottom end of a hurricane barrel, and a wind driven generator is mounted at the top end of the hurricane barrel. The new energy hybrid power station with the cascaded steam turbine comprehensively utilizes heat energy, reduces environmental pollution, can greatly increase efficiency of nuclear power plants and coal-fired power plants, is fine in electric energy quality, low in investment and stable in operation, and has high social benefit and economic benefit.

The invention discloses a method for inhibiting total active power fluctuation through a doubly fed induction wind power system and a system for inhibiting the total active power fluctuation through the doubly fed induction wind power system. According to the method, a serial grid-side transformer is utilized to inject a serial voltage vector to a stator loop to keep stator voltage symmetric, so that stator and rotor three-phase currents of a wind power system are symmetric, electromotor power and electromagnetic torque do not have second harmonic generation fluctuation, and a parallel grid-side transformer is utilized to output proper current, so that fluctuant components of power flowing through serial grid-side active power can be counteracted through fluctuant components of the active power of a parallel grid-side output, no fluctuation of the total output active power of the whole system can be achieved, and continuous operation capacity of the wind power system can be enhanced under an asymmetric power grid condition.

The invention discloses a new-energy central air-conditioning system. The central air-conditioning system comprises an earth source heat pump central air conditioner device having a compressor, a condenser, a throttling device, an evaporator and an underground heat exchanger. The compressor is connected with the condenser and the evaporator respectively. The condenser is connected with the evaporator through the throttling device. The evaporator is connected with the heat exchanger through a pipe. The central air-conditioning system also comprises a solar photovoltaic power generator having a solar cell array, a photovoltaic generation controller, a storage battery and an inverter. The photovoltaic controller is connected with the solar cell array, the storage batter and the inverter respectively. The inverter is connected with the compressor. The system is reasonable in design and low in operation cost and can saves energy.

The invention discloses a unilateral magnetic adjustment principle-based double-rotor and double-winding flat linear generator, belongs to the field of linear generators for wave power generation and aims at solving the problem that an existing direct-driven wave power generation system is relatively poor in power generation quality. The unilateral magnetic adjustment principle-based double-rotor and double-winding flat linear generator comprises a casing, a double-winding stator, a permanent-magnet stator, a permanent-magnet rotor, a modulation rotor, a permanent-magnet rotor output end and a modulation rotor output end, wherein the double-winding stator is symmetrically fixed on the upper and lower inner surfaces of the casing by employing an axis plane as the symmetric plane; the modulation rotor is arranged in the double-winding stator; the permanent-magnet rotor is arranged between the modulation rotor and the double-winding stator; the right end of the modulation rotor extends outside from an end cover at the right side of the casing as the modulation rotor output end; the permanent-magnet rotor is of a symmetric structure employing the axis plane as the symmetric plane; two ends of the permanent-magnet rotor extend outside from the end covers at two sides of the casing; the extension part at the left side is taken as the permanent-magnet rotor output end; and the axial symmetric plane of the permanent-magnet rotor output end overlaps with that of the modulation rotor output end.

The invention discloses a double-input and single-output constant-rotation-speed control system. The double-input and single-output constant-rotation-speed control system comprises a mechanical reversing device, a flywheel energy storage device and a pump-controlled motor speed regulating system which are all sequentially connected. The mechanical reversing device comprises a first clutch connected with an input shaft, a first gear meshed with the first clutch, and a second gear meshed with the first gear. The mechanical reversing device further comprises a second clutch connected with the flywheel energy storage device, and a third gear meshed with the second clutch. The first clutch and the second clutch are coaxially connected. The second gear and the third gear are coaxially connected, and a third clutch is arranged between the second gear and the third gear. The mechanical reversing device makes a transmission shaft output torque in the same direction under the conditions of forward rotation and reverse rotation, and therefore reliability is guaranteed under a high-power working condition. The flywheel energy storage device is used for storing and releasing energy so that the power interruption defect can be overcome, and the fluctuation of the rotation speed of a pump-controlled motor can be inhibited as well. Rotation speeds which change constantly are regulated into a stable rotation speed by the pump-controlled motor speed regulation system, and power generation quality is improved.

The invention provides a blade pitch adjusting device and method of a wind-driven generator set and the wind-driven generator set. The blade pitch adjusting device comprises a plate type driving structure, a first linear telescoping driving mechanism and a second linear telescoping driving mechanism, wherein the plate type driving structure is vertical to an axis of a pitch adjusting bearing; an axis arrangement track which surrounds the pitch adjusting bearing is arranged on the plate type driving structure; the first linear telescoping driving mechanism can be connected to the track througha first clamping part which can be clamped to the track, and the first linear telescoping driving mechanism is connected to the first clamping part in a hinging manner; the second linear telescoping driving mechanism is connected to the track through a second clamping part which can be clamped to the track; and the second linear telescoping driving mechanism is connected to the second clamping part in a hinging manner. The blade pitch adjusting device of the wind-driven generator set replaces an existing integrated gear driving type pitch adjusting system to realize sectional pitch adjusting of the wind-driven generator set, and thus the problem of frictional loss between a driving gear and tooth surfaces of the pitch adjusting bearing in the pitch adjusting process can be overcome; and the service life of the pitch adjusting bearing is prolonged.