摘要:
A float (10) on a body of water is mechanically coupled to a piezoelectric material member (18) for causing alternate straining and destraining of the member in response to the up and down movement of the float in response to passing waves, thereby causing the member to generate electricity. The output impedance of the float is matched to the input impedance of the member for increasing the energy transfer from the float to the member.
摘要:
A float (10) on a body of water is mechanically coupled to a piezoelectric material member (18) for causing alternate straining and destraining of the member in response to the up and down movement of the float in response to passing waves, thereby causing the member to generate electricity. The output impedance of the float is matched to the input impedance of the member for increasing the energy transfer from the float to the member.
摘要:
Un élément flottant (10) sur un plan d'eau est mécaniquement couplé à un organe (18) en un matériau piézoélectrique afin de soumettre ledit organe alternativement a des contraintes et à des relaxations de contraintes, en réponse au mouvement de l'élément flottant qui monte et qui descend avec le passage des vagues, en amenant ainsi l'organe à générer de l'électricité. L'impédance de sortie de l'élément flottant est adaptée à l'impédance d'entrée de l'organe afin d'augmenter le transfert d'énergie de l'élément flottant à l'organe.
摘要:
Afin de convertir l'énergie mécanique des vagues à la surface de plans d'eau, une structure piézoélectrique (10) produisant de l'énergie comprend des organes en matériau piézoélectrique, de préférence sous la forme d'une feuille ou d'un laminé de feuilles (14) de ce matériau, chaque feuille possédant une électrode (24) sur ses surfaces opposées. Chaque paire d'électrodes et le matériau piézoélectrique intercalé définissent un élément producteur d'énergie, chacun de ces éléments étant dimensionné, par rapport aux longueurs d'onde de vagues sélectionnées à la surface du plan d'eau dans lequel le générateur doit être utilisé, de préférence de manière à accroître le rendement de la conversion de puissance. Un support (12) permet de maintenir la structure dans une position présélectionnée au-dessous de la surface de l'eau. De préférence, les éléments générateurs piézoélectriques sont flexibles et sont supportés de manière à en permettre la flexion en réaction au mouvement de l'eau environnante. Dans certaines variantes, les éléments sont conçus pour entrer en résonance mécanique lors du passage des vagues sur ces éléments, une telle flexion et/ou résonance augmentant l'efficacité du couplage mécanique entre les vagues et les éléments.
摘要:
For the purpose of converting the mechanical energy of surface waves on bodies of water, a power generating piezoelectric structure (10) is provided comprising piezoelectric material members, preferably in the form of one or a laminate of sheets (14) of such material, each sheet having an electrode (24) on opposite surfaces thereof. Each pair of electrodes and the piezoelectric material therebetween define a power generating element, each of which is preferably dimensioned, relative to the wave lengths of selected waves on the body of water in which the generator is to be used, for increasing the efficiency of power conversion. A support (12) is provided for maintaining the structure in a preselected position within and below the surface of the water. Preferably, the pizoelectric generating elements are flexible and are supported in such manner to allow flexure thereof in response to movement of the surrounding water. In certain embodiments the elements are designed to enter into mechanical resonance in response to the passage of waves thereover, such flexure and/or resonance increasing the mechanical coupling efficiency between the waves and the elements.
摘要:
For the purpose of converting the mechanical energy of surface waves on bodies of water, a power generating piezoelectric structure (10) is provided comprising piezoelectric material members, preferably in the form of one or a laminate of sheets (14) of such material, each sheet having an electrode (24) on opposite surfaces thereof. Each pair of electrodes and the piezoelectric material therebetween define a power generating element, each of which is preferably dimensioned, relative to the wave lengths of selected waves on the body of water in which the generator is to be used, for increasing the efficiency of power conversion. A support (12) is provided for maintaining the structure in a preselected position within and below the surface of the water. Preferably, the pizoelectric generating elements are flexible and are supported in such manner to allow flexure thereof in response to movement of the surrounding water. In certain embodiments the elements are designed to enter into mechanical resonance in response to the passage of waves thereover, such flexure and/or resonance increasing the mechanical coupling efficiency between the waves and the elements.