scholarly journals Magnetostrictive vibration damper and energy harvester for rotating machinery

2015 ◽  
Author(s):  
Zhangxian Deng ◽  
Vivake M. Asnani ◽  
Marcelo J. Dapino
Keyword(s):  
Energy Harvester ◽  
Rotating Machinery ◽  
Vibration Damper

Theoretical and Experimental Evaluation of System Energy Balance and Power Generation Efficiency for Piezocomposite Vibration Energy Harvester Under Low Intensity Excitation Condition

2012 ◽  
Author(s):  
Kazuhiko Adachi ◽  
Tatsuya Sakamoto
Keyword(s):  
Energy Transfer ◽  
Energy Balance ◽  
Energy Harvester ◽  
Rotating Machinery ◽  
Energy Transfer Efficiency ◽  
Vibration Energy ◽  
Natural Period ◽  
Vibration Energy Harvester ◽  
Low Intensity ◽  
Ac Power

In the authors’ previous study, the vibration energy harvester of the piezoelectric bimorph cantilever type was proposed for vibration condition monitoring applications of industrial rotating machinery. According to an ISO standard, vibration level of newly commissioned class I rotating machinery is under 0.71mm/sec rms in all frequency range. Authors assumed that the typical casing or pedestal vibration amplitude of the rotating machinery was 0.71 mm/sec rms and this low intensity excitation condition was the input for experimental evaluation of the voltage generation performance of the piezocomposit vibration energy harvester. The vibration energy harvester consists of the surface bonded two Macro-Fiber Composites (MFCs). In this study, energy transfer efficiency was derived from the system energy balance during the natural period of the proposed vibration energy harvester. Energy balance equations were successfully obtained from the governing equations of the piezoelectrically coupled electromechanical system. The maximum AC power through 114.3 Kilo-Ohm resistor which includes instrument internal resistances experimentally obtained 242.07 microwatt when subjected to vibration source input magnitude of 0.71 mm/s rms at the resonant frequency of the harvester (29.42 Hz). The impedance matching between MFCs and the electrical resistive load was effective for maximizing AC power transfer of the vibration energy harvester. Estimated energy transfer from mechanical system to electrical system shows the agreement with the experimentally evaluated generating power during the natural period of the vibration energy harvester with about 3% difference. Estimated energy transfer efficiency was about 30% for different excitation magnitudes: 0.71, 0.568 and 0.355 mm/sec rms.

A Preliminary Study of Piezoelectric Vibration Energy Harvester for Vibration Condition Monitoring Applications of Rotating Machinery

2008 ◽  
Author(s):  
Kazuhiko Adachi ◽  
Tohru Tanaka
Keyword(s):  
Condition Monitoring ◽  
Energy Harvester ◽  
Fiber Composite ◽  
Rotating Machinery ◽  
Industrial Plant ◽  
Vibration Energy ◽  
Production Plant ◽  
Vibration Energy Harvester ◽  
Vibration Condition ◽  
Monitoring Applications

Rotating machinery is widely used in the industrial plant, for example, power plant, chemical plant, mass-production plant and so on. In order to ensure safety operation of the rotating machinery, vibration condition monitoring of the machinery can play a crucial role. In this study, the cantilever type of vibration energy harvester is designed for vibration condition monitoring applications of rotating machinery. The mechanical resonant frequency of piezoelectric bimorph cantilever will be tuned to the rotating speed of the machinery. Recently, new d31 type Macro-Fiber Composite (MFC) can be commercially available. Due to the d31 configuration, electrical impedance of new MFC is much smaller than that of previous d33 type MFC. This study experimentally compares the ability two types of MFC, d31 and d33 configurations, to generate electrical energy when subjected to mechanical vibration.

An Experimental Power Generation Evaluation of Cantilever Type of Piezoelectric Vibration Energy Harvester

2009 ◽  
Author(s):  
Kazuhiko Adachi ◽  
Tohru Tanaka
Keyword(s):  
Power Generation ◽  
Resonant Frequency ◽  
Condition Monitoring ◽  
Energy Harvester ◽  
Rotating Machinery ◽  
Industrial Plant ◽  
Vibration Energy ◽  
Production Plant ◽  
Vibration Energy Harvester ◽  
Vibration Condition

Rotating machinery is widely used in the industrial plant, for example, power plant, chemical plant, mass-production plant and so on. In order to ensure safety operation of the rotating machinery, vibration condition monitoring of the machinery can play a crucial role. Authors have proposed a cantilever type of vibration energy harvester for vibration condition monitoring applications of rotating machinery. Proposed energy harvester consisted of Macro-Fiber Composite (MFC) which is flexible and durable piezocomposite type actuator. The mechanical resonant frequency of the piezoelectric bimorph cantilever is tuned to the rotating speed of a typical 4-pole induction motor driven rotating machine. In this study, the power generation performance of proposed energy harvester is evaluated through numerical simulations as well as experiment when subjected to vibration source input magnitude of 0.71(mm/s rms) at the resonant frequency of the harvester by using the electrodynamic shaker.

Harvesting Vibration From Rotating Machinery as a Power Source for a Wireless Sensor Node

2009 ◽  
Author(s):  
H. Salleh ◽  
N. M. Rashid ◽  
K. A. Wahib
Keyword(s):  
Integrated Circuit ◽  
Power Output ◽  
Sensor Node ◽  
Energy Harvester ◽  
Electrical Energy ◽  
Rotating Machinery ◽  
Wireless Sensor ◽  
Design Parameters ◽  
Wireless Sensor Node ◽  
In Series

The wireless sensor device which uses battery can cause problems when the wireless nodes are large in number and when the nodes are placed in the difficult area to access. Therefore, it is advantageous for the sensor node to be capable of extracting energy from the environment, making it self-powered, self-sustaining and lowering overall cost of the wireless network. Improvement in integrated circuit (IC) technology has made the overall power consumption of circuit very small which leads to a very promising application of the vibration-based energy harvester micro power generator (VEHM). This paper discusses on some practical design considerations in harvesting vibration from rotating machinery to power up a wireless sensor node. It also focuses on the effect of shape of the VEHM on its power output. These parameters are actually important as part of the key design parameters in harvesting the vibration from ambient. The energy harvester is made of piezoelectric bimorph bender materials poling in series to transform ambient vibrations into electrical energy. The power output for the VEHM made of single and multiple array of PZT bimorph bender are investigated and the effect of triangular and the rectangular PZT bimorph bender are compared. Two sets of VEHM device have been tested to work in the range of 50 Hz–110 Hz to power up a wireless sensor node for condition monitoring application. The experimental results are presented and compared to the previous similar work. It is found that the triangular shape bender generates more power compared to rectangular form whether it is single or multiple connected in series. Testing results proved that triangular VEHM of the same volume and fundamental frequency when compared to rectangular VEHM can improve the overall power generated by the generator.

Experimental Performance Evaluation of Vibration Monitoring Sensor Prototype Driven by Piezocomposite Vibration Energy Harvester Under Low Intensity Excitation Condition

2013 ◽  
Author(s):  
Kazuhiko Adachi ◽  
Tatsuya Sakamoto
Keyword(s):  
Energy Harvester ◽  
Rotating Machinery ◽  
Vibration Monitoring ◽  
Vibration Energy ◽  
Excitation Condition ◽  
Acceleration Sensor ◽  
Vibration Acceleration ◽  
Vibration Energy Harvester ◽  
Low Intensity ◽  
Monitoring Applications

In this study, we have developed a sensor prototype for vibration acceleration monitoring driven by the authors’ proposed vibration energy harvester. It uses a commercial LTC3588 energy harvesting chip with capacitors and the piezo-bimorph cantilever-type energy harvester consists of the surface bonded two Macro-Fiber Composites. The power consumption of the acceleration sensor was typically 1mW, and the driving current was typically 400 microamperes. For vibration condition monitoring applications of industrial rotating machinery, we assumed that the typical casing or pedestal vibration amplitude of the rotating machinery was 0.71 mm/sec rms according to ISO standard. This low intensity excitation condition was the input for experimental evaluation of the developed sensor prototype. The sensor prototype was able to measure the vibration acceleration of approximately 17 seconds under the vibration input of 0.013G (RMS) at approximately 56Hz every two minutes. Approximately 12% of the input of vibration energy was used for driving the acceleration sensor. Therefore, estimated overall energy transfer efficiency was about 12%. The experimental results indicate the feasibility of the sensor prototype driven by piezocomposite vibration energy harvester.

Hybrid Friction - Impact Vibration Damper for Cryogenic Rotating Machinery

1997 ◽  
Vol 13 (4) ◽  
pp. 495-501 ◽  
Author(s):  
J. Jeffrey Moore ◽  
Alan B. Palazzolo ◽  
Ravindera K. Gadangi ◽  
Alford F. Kascak ◽  
Gerald Brown ◽  
...  
Keyword(s):  
Rotating Machinery ◽  
Vibration Damper ◽  
Impact Vibration

An Experimental Performance Evaluation of DC Power Generation and Power Loss in Full-Bridge Rectifier of Cantilever Type of Piezoelectric Vibration Energy Harvester

2010 ◽  
Author(s):  
Kazuhiko Adachi ◽  
Tohru Tanaka
Keyword(s):  
Power Generation ◽  
Resonant Frequency ◽  
Power Loss ◽  
Energy Harvester ◽  
Rotating Machinery ◽  
Vibration Energy ◽  
Vibration Energy Harvester ◽  
Full Wave ◽  
Dc Power ◽  
Bridge Rectifier

Rotating machinery is widely used in the industrial plant. In order to ensure safety operation of the rotating machinery, vibration condition monitoring of the machinery can play a crucial role. Authors have proposed a cantilever type of vibration energy harvester for vibration condition monitoring applications of rotating machinery. Proposed energy harvester consisted of Macro-Fiber Composite (MFC). In this study, not only the DC power generation performance but also power loss in full-wave bridge rectifier of the proposed vibration energy harvester is experimentally evaluated. The maximum DC output power through 287.6(kΩ) resistor which includes instruments internal resistances obtained 109.5(μW) when subjected to vibration source input magnitude of 0.71(mm/s rms) at the resonant frequency of the harvester. The impedance matching between MFC actuators and the electrical resistive load was also effective for maximizing the DC power transfer of the vibration energy harvester. The power loss in full-wave bridge rectifier reached 13.7(μW) at the resonant frequency.

Electrical vibration damper

1982 ◽  
Vol 129 (5) ◽  
pp. 182 ◽  
Author(s):  
Hiroshi Kurokui ◽  
Michio Nakano
Keyword(s):  
Vibration Damper

Simply supported FPEDs connected by springs for broadband energy harvesting

2020 ◽  
Vol 64 (1-4) ◽  
pp. 201-210
Author(s):  
Yoshikazu Tanaka ◽  
Satoru Odake ◽  
Jun Miyake ◽  
Hidemi Mutsuda ◽  
Atanas A. Popov ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Evaluation Method ◽  
Energy Harvester ◽  
Vibrational Energy ◽  
Functional Materials ◽  
Vibration Energy ◽  
Theoretical Evaluation ◽  
Vibration Energy Harvester ◽  
Polyvinylidene Difluoride ◽  
Simply Supported

Energy harvesting methods that use functional materials have attracted interest because they can take advantage of an abundant but underutilized energy source. Most vibration energy harvester designs operate most effectively around their resonant frequency. However, in practice, the frequency band for ambient vibrational energy is typically broad. The development of technologies for broadband energy harvesting is therefore desirable. The authors previously proposed an energy harvester, called a flexible piezoelectric device (FPED), that consists of a piezoelectric film (polyvinylidene difluoride) and a soft material, such as silicon rubber or polyethylene terephthalate. The authors also proposed a system based on FPEDs for broadband energy harvesting. The system consisted of cantilevered FPEDs, with each FPED connected via a spring. Simply supported FPEDs also have potential for broadband energy harvesting, and here, a theoretical evaluation method is proposed for such a system. Experiments are conducted to validate the derived model.

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