Energy Harvesting Technologies and Equivalent Electronic Structural Models—Review
Round 1
Reviewer 1 Report
The paper reviews transducers for energy harvesting and their models. The paper would be helpful to those interested in the topics. An important part of a review paper is accurate quotation of references, and the paper should improve substantially in the aspect. Here are detailed comments.
· The title should specify that it is a review paper, and a suggested modification is “Energy harvesting technologies and equivalent electronic structural models – review”
· All the conference and journal papers in the reference are published before 2015. It should update the references to include recent ones.
· Table 1 & Table 2: provide references for individual items. (A good example is Table 11.)
· Equation (3): Explain ff (fill factor) briefly.
· Figure 4: I à IL
· Line 136: include the following recent reference.
S. Priya, H.-C. Song, Y. Zhou, R. Varghese, A. Chopra, S.-G. Kim, I. Kanno, L. Wu, D.S Ha, J. Ryu, R.G. Polcawich, “A Review on Piezoelectric Energy Harvesting: Materials, Methods, and Circuits,” Energy Harvesting and Systems, Vol. 4, No. 1, pp. 3 – 39, March 2017.
· Equations (4) – (7): provide the meanings of the symbols used.
· Table 4: provide a reference.
· Equation (8): show only for the case of N turns.
· Tables 5, 6, 8 and 9: provide a reference.
· Line 291: also include disadvantages.
· Table 12: values are not aligned along the rows. Add board lines for different groups of turbines.
· Figure 25: give a reference.
Author Response
The paper reviews transducers for energy harvesting and their models. The paper would be helpful to those interested in the topics. An important part of a review paper is accurate quotation of references, and the paper should improve substantially in the aspect. Here are detailed comments.
· The title should specify that it is a review paper, and a suggested modification is “Energy harvesting technologies and equivalent electronic structural models – review”
The title has been modified.
· All the conference and journal papers in the reference are published before 2015. It should update the references to include recent ones.
New references from 2015 have been included in the paper for each section.
· Table 1 & Table 2: provide references for individual items. (A good example is Table 11.)
Individual references have been included in table 1 and 2.
· Equation (3): Explain ff (fill factor) briefly.
The fill factor (ff) has been briefly described.
· Figure 4: I à IL
The figure has been modified.
· Line 136: include the following recent reference.
S. Priya, H.-C. Song, Y. Zhou, R. Varghese, A. Chopra, S.-G. Kim, I. Kanno, L. Wu, D.S Ha, J. Ryu, R.G. Polcawich, “A Review on Piezoelectric Energy Harvesting: Materials, Methods, and Circuits,” Energy Harvesting and Systems, Vol. 4, No. 1, pp. 3 – 39, March 2017.
The reference has been included.
· Equations (4) – (7): provide the meanings of the symbols used.
The meaning of the equations have been included.
· Table 4: provide a reference.
A reference has been included.
· Equation (8): show only for the case of N turns.
The equation 8 has been modified.
· Tables 5, 6, 8 and 9: provide a reference.
The references have been included.
· Line 291: also include disadvantages.
The disadvantages of the electrostatic harvesters have been included.
· Table 12: values are not aligned along the rows. Add board lines for different groups of turbines.
Table 12 has been modified with provided suggestions.
· Figure 25: give a reference.
A reference has been included.
Reviewer 2 Report
Article presents a review of the energy harvesting technologies and provides structural electrical models. The analysis shown in the paper presents a guideline for proper selection of energy harvesting technologies to be used as a source for the self-powered systems. As it is clearly presented in order to use the harvested energy, the systems must be adopted to the energy and voltage waveform of the specific energy harvesting technology. The paper is interesting, concise and clearly written.
Other few comments and suggestions.
Abstract, line 11, ‘As the worldwide awareness about the global climate change spreads, green electronics are becoming increasingly popular for they are…’, should be changed to as they are
On page 2, line 44, ‘It must be born in mind…’, should be changed to It must be considered… also on Page 8
On Page 5, Figure 4. correct the text in figure from current source I to IL
On Page 7, line 150, ‘... generate energy when bending…‘, should be changed to by bending
On page 7, Equations (4)-(7), representation of variables used is missing
On page 9, , line 207, ‘Where, R is the losses…‘, should be changes to Where R represents the losses…
On Page 10, line 237, ‘Where Dem is the electromagnetic damping, RL is de load, Rc the coil…’, de should be replaced by the
On Page 13, line311, ‘However, it is not possible perform a direct conversion…’, insert to perform
On Page15, line 382, ‘Even with large heat flow, they not provided much…’, should be changed to Even with large heat flow, they do not provide much…
On Page 18, Figure 17. correct the text in figure
Authors should carefully check the spelling of the text
Author Response
Article presents a review of the energy harvesting technologies and provides structural electrical models. The analysis shown in the paper presents a guideline for proper selection of energy harvesting technologies to be used as a source for the self-powered systems. As it is clearly presented in order to use the harvested energy, the systems must be adopted to the energy and voltage waveform of the specific energy harvesting technology. The paper is interesting, concise and clearly written.
Other few comments and suggestions.
Abstract, line 11, ‘As the worldwide awareness about the global climate change spreads, green electronics are becoming increasingly popular for they are…’, should be changed to as they are
On page 2, line 44, ‘It must be born in mind…’, should be changed to It must be considered… also on Page 8
On Page 5, Figure 4. correct the text in figure from current source I to IL
On Page 7, line 150, ‘... generate energy when bending…‘, should be changed to by bending
On page 7, Equations (4)-(7), representation of variables used is missing
On page 9, line 207, ‘Where, R is the losses…‘, should be changes to Where R represents the losses…
On Page 10, line 237, ‘Where Dem is the electromagnetic damping, RL is de load, Rc the coil…’, de should be replaced by the
On Page 13, line311, ‘However, it is not possible perform a direct conversion…’, insert to perform
On Page15, line 382, ‘Even with large heat flow, they not provided much…’, should be changed to Even with large heat flow, they do not provide much…
On Page 18, Figure 17. correct the text in figure
All the suggested corrections have been included and the meaning of the equations (4-7) have been included.
Authors should carefully check the spelling of the text
The text has again reviewed, correcting the small mistakes.
