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PIEZOELECTRIC GENERATOR

 
     
 

OUR PIEZOELECTRIC GENERATOR SYSTEM MAY HAS AS MANY PIEZOELECTRIC GENERATORS (650) AS DIFFERENT POSITIONS HAVE THE SYSTEM IN WHICH IT IS POSSIBLE TO RECEIVE DYNAMIC LOADS (FN).

 

 
 

Generator1

 

 
 

Each PIEZOELECTRIC GENERATOR (650) is composed by:

 
 

Generator2

1.- ARRAY (400) OF PIEZOELECTRIC MODULES (Mji,i)

 

2.- ACTIVATION PLATE (750)

 

3.- INPUT FORCE CONTROL DEVICE (700)

 

4.- DAMPING ELEMENT (760)

 
 

 

1.- ARRAY (400) OF PIEZOELECTRIC MODULES (Mji,i) Composed by:

 

1.1.- PIEZOELECTRIC MODULES (Mji,i) composed by:

 

 - Piezoelectric element (Eji,i) .- for transform the dynamic forces micropulses received (F) to an electrical signal of high frequency pulses.

 - Alternating current/direct current converter (Cji,i) .- for converting alternating current generated by the piezoelectric element (Eji,i) into direct current.

 

 
 

Generator3

 
 

 

1.2 - ARRAY OF PIEZOELECTRIC MODULES (Mji,i) AND OUTPUT POWER (POUT_TOT):

 

The array (400) is composed by a number of sets (i) of piezoelectric modules (Mji,i), each of said sets (i) are connected to each other in parallel. And the sets (i) are composed by a number (j1, j2, …ji) of piezoelectric modules (Mji,i) connected to each other in series. The electrical voltage (Vout) in each sets (i) should be the same to connect the sets (i) in parallel.

 

 
  Generator4  
 

 

2.- ACTIVATION PLATE (750):

 

An activation plate (750) for evenly distributing the predetermined force (F) acting on the piezoelectric modules (Mji,i) such that they all receive substantially the same predetermined force (F), substantially at the same moment and substantially for the same time. Instead of receiving 1 force of 1.000 kg, it is better to receive 1.000 forces of 1 kg each one, which will be applied in 1.000 piezoelectric elements, and whose signals of small magnitude are easily converted to DC.

 

 
  Generator5  
 

 

3.- INPUT FORCE CONTROL DEVICE (700):

 

Contrary to the piezoelectric generators of the prior art, we want to have control of the voltage and the current generated by each piezoelectric element in order to can connect this in serial but also parallel configuration. For this, when the predetermined trigger force is reached, the INPUT CONTROL DEVICE (700) transmits this force at a predetermined speed to all the piezoelectric modules (Mji,i) of the array (400) through the activation plate (750).

 

 
  Generator6  
 

 

4.- DAMPING ELEMENT (760):

 

The force exceeding the predetermined force is absorbed by the DAMPING ELEMENT and thus the piezoelectric modules are also protected.

 

 
  Generator7  
 

EXAMPLE

 
 

 

Arrive to the INPUT FORCE CONTROL DEVICE (700)  a force of 3.000 kg. The trigger parametrized at 1.000 Kg launch the ACTIVATION PLATE (750)  at a predetermined speed and it evenly distributes the force to 1.000 piezoelectric modules at the same moment and during the same time. And the excessive force (2.000 Kg) is absorbed by the DAMPING ELEMENT (760).

 

The piezoelectric elements has been developed with a material and shape to perform an output current and output voltage predetermined. In each piezoelectric module exist an AC/DC converter to achieve a continuous output current and a continuous output voltage.

 

After that, to achieve the desired output voltage of the generator are connected in series the piezoelectric modules needed, forming sets, always with the same total voltage. And finally, to achieve the desired output current, the necessary sets are connected in parallel.

 

 
  Generator8