Classifications

• • G—PHYSICS
  • G10—MUSICAL INSTRUMENTS; ACOUSTICS
  • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
  • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
  • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
  • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
  • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
  • G10K11/1787—General system configurations
  • G10K11/17873—General system configurations using a reference signal without an error signal, e.g. pure feedforward
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
  • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
  • F16F15/005—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion using electro- or magnetostrictive actuation means
• • G—PHYSICS
  • G10—MUSICAL INSTRUMENTS; ACOUSTICS
  • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
  • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
  • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
  • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
  • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
  • G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
  • G10K11/17821—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the input signals only
  • G10K11/17825—Error signals
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
  • H01F27/00—Details of transformers or inductances, in general
  • H01F27/33—Arrangements for noise damping
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
  • F16F2224/00—Materials; Material properties
  • F16F2224/02—Materials; Material properties solids
  • F16F2224/0283—Materials; Material properties solids piezoelectric; electro- or magnetostrictive
• • G—PHYSICS
  • G10—MUSICAL INSTRUMENTS; ACOUSTICS
  • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
  • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
  • G10K2210/10—Applications
  • G10K2210/121—Rotating machines, e.g. engines, turbines, motors; Periodic or quasi-periodic signals in general
• • G—PHYSICS
  • G10—MUSICAL INSTRUMENTS; ACOUSTICS
  • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
  • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
  • G10K2210/10—Applications
  • G10K2210/129—Vibration, e.g. instead of, or in addition to, acoustic noise
  • G10K2210/1291—Anti-Vibration-Control, e.g. reducing vibrations in panels or beams
• • G—PHYSICS
  • G10—MUSICAL INSTRUMENTS; ACOUSTICS
  • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
  • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
  • G10K2210/30—Means
  • G10K2210/321—Physical
  • G10K2210/3212—Actuator details, e.g. composition or microstructure

Definitions

• the invention relates to a silent transformer system which is based on an active noise/vibration controlling to reduce the ambient noise emitted from the transformers and has a low level of ambient noise.
• the noise problem in the transformers is one of the major problems of such applications in terms of acoustics. Said noise is resulted from various electromagnetic forces formed in the cores of the transformers. Locating the transformers in the residential area in metropolises also increases the importance of that noise problem.
• Noise in transformers results from a vibration motion. That noise may be avoided by damping the vibration or the sound waves formed by the vibration.
• Active and passive methods are present in order to dampen the vibration.
• the structural features of the construction are changed in the passive methods, while it is based on the principle of stimulating the system by processing the instantaneously received inputs by various algorithms in the active method.
• Piezoelectric materials may generally be used as actuators to dampen vibrations, or as sensors to measure vibration amplitudes and frequencies.
• Piezoelectric material-based smart structures are used in many fields of engineering and progresses continuously. Such studies are performed in many sectors such as machinery, construction and aviation and contribute to the solution of problems uniquely.
• Smart material-based control studies, such as piezoelectricity may be commonly performed in mechanical engineering, robotic arms, flexible rods, constructional engineering, bridges and buildings, as well as in airframes and wings in aviation.
• the object of the invention is to reduce the noise resulting from the transformer core in the transformers by being dampened by generating counter waves with piezoelectric patches.
• control is provided by a "Direct Speed Feedback” method.
• a micro-electro-mechanical (MEMS) accelerometer, analog circuits and piezoceramic actuators are used in the system which basically consists of data acquisition, feedback and external energy transfer stages.
• MEMS micro-electro-mechanical
• the control system basically consists of taking instant measurements, processing the measurements taken by the control algorithms and stimulating the construction appropriately.
• An accelerometer, a strain gauge or various noise measurement devices may be used as measurement elements.
• State feedback or PID methods may be examples of the control algorithms. Consequently, the external stimulator equipment which will provide energy transfer to the system should be selected in a way that allows the system to be manipulated as desired and is suitable for the topology.
• equipment In the active control, equipment is used, which is defined as an 'actuator' and makes it possible to transfer energy to the system externally.
• the external equipment used allows the performance of the system to be changed if desired.
• Fig. 1 is a representative front view of the parts fixed to a transformer body.
• the invention relates to an active noise and vibration reduction system (100), characterized in that it comprises at least one accelerometer sensor (3), at least one main control center (2) and a piezoceramic actuator (1) bonded to at least one transformer body.
• the system (100) of the invention comprises the process steps of:
• the object of the invention is to reduce the noise resulting from the transformer core in the transformers by being dampened by generating counter waves with piezoelectric actuators (1).
• control is provided by a "Direct Speed Feedback” method.
• MEMS micro-electro-mechanical
• main control center (2) and piezoceramic actuators (1) are used in the system which basically consists of data acquisition, feedback and external energy transfer stages.
• the project outputs the changes in the modal properties of the construction caused by the actuator-accelerometer pairs and the noise measurements were evaluated.
• the control system basically consists of taking instant measurements, processing the measurements taken by the control algorithms and stimulating the construction appropriately.
• An accelerometer (3) a strain gauge or various noise measurement devices may be used as measurement elements.
• equipment is used, which is defined as an 'actuator' and makes it possible to transfer energy to the system externally.
• the external equipment used allows the performance of the system to be changed if desired.
• the system response depends on the instantaneous measurements taken from the system.
• the system (100) of the invention reduces the noise resulting from the transformer core in the transformers by being dampened by generating counter waves with piezoelectric patches (1).
• the response received as a result of the electric field provided to the piezoelectric ceramics (1) produces a counter sound wave which will dampen the current frequency.
• control is provided by a "Direct Speed Feedback” method.
• a MEMS accelerometer (3), a main control center (2) and piezoceramic actuators (1) are used in the system which basically consists of data acquisition, feedback and external energy transfer stages. According to the value from the accelerometer (3), a 90 degree-shifted wave is produced in the actuators and fed back.
• the number and positions of the accelerometer sensor (3) and piezo actuator (1) vary. Accelerometers (3) and piezo actuators (1) are placed together in the system. The locations are at the points where the vibration amplitudes of the construction are maximum.
• An accelerometer (3) is used as a sensor in the control system to be applied. This device also functions as a source of the feedback signal to be produced.
• the invention may be used in the industry, characterized in that system (100) developed in the transformer body is an active noise and vibration reduction system (100) and is industrially applicable.

Landscapes

• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Acoustics & Sound (AREA)
• General Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Multimedia (AREA)
• Aviation & Aerospace Engineering (AREA)
• Mechanical Engineering (AREA)
• Soundproofing, Sound Blocking, And Sound Damping (AREA)
• Vibration Prevention Devices (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=85114182

Family Applications (1)

Country Status (2)

Citations (3)

• 2021
  • 2021-12-08 TR TR2021/019429A patent/TR2021019429A2/tr unknown
• 2022
  • 2022-03-04 WO PCT/TR2022/050198 patent/WO2023107028A1/en unknown

Patent Citations (3)

Also Published As

Similar Documents

Legal Events