An Output Power Interval Control Strategy Based on Pseudo-Tip-Speed Ratio and Adaptive Genetic Algorithm for Variable-Pitch Tidal Stream Turbine

Round 1

Reviewer 1 Report

A novel output power internal control strategy based on pseudo-tip-speed ratio and adaptive genetic algorithm are proposed to improve the anti-interference ability and reliability in this paper.

 

I think this is a creative approach, and please make some corrections below.

 

1. Add a description of the simulation tool used.

 

2. Indicate the source of Figure 1.

 

3. A brief description of the specifications of the turbine used to derive the performance curve shown in Figure 2 is required. And specify how this performance curve was obtained.

4. The various control strategies have been described, for the convenience of the reader, the characteristics of the strategies used are summarized in the table.

5. Indicate the units of IAE and FAP used in Table 2.

6. Rather than expressing energy in KJ in FIG. 11, it is proposed to express energy in kWh because it is a power generation device.

Author Response

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Author Response File: Author Response.pdf

Reviewer 2 Report

The article "An output power interval control strategy based on pseudo-tip- speed ratio and adaptive genetic algorithm for variable-pitch tidal stream turbine"  by Cai et al. provides a new approach to the optimization of the output of tidal turbines by  coupling  constitutive and controller equations and operational constraints with an original  genetic algorithm for the determination of important parameters.

As such, it is a useful contribution that after a careful revision could be published in JSME.

The main shortcoming of the paper is the low  quality  of the presentation that makes reading (and reviewing) difficult.

In particular, several  symbols used in equations are not defined (or defined several pages  below). Of course, the meaning of some of them can be guessed due to their frequent use in the literature; however, these ambiguities should be removed

·        -   b  (eq. 1 and Fig.1)  on page 3-4  is defined on p. 9

·        -    point C in Fig.2

·         -  the frame d-q should be explained

·          - in eq. (6) the symbol J is not identified as the inertia, L_d, L_q are misspelled as  L_sd, L_sq

·          - the derivation (or a suitable reference) to eq. (12) should be provided

·          - the proportional and integral coefficients in eq (13) should be defined

·         -  the SA methodology should be illustrated

·          - the variable m is used as a symbol for mass as well as a coefficient to balance error and pitch equation (line 280)

·          - The value  of the constant c₀ in the example considered is not specified

The wording should be improved: if possible,  an English native speaker should vet the text for accuracy.

Author Response

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Author Response File: Author Response.pdf

Round 2

Reviewer 1 Report

1. The corrections to the points pointed out were generally good.

2. It would be nice if you could add an explanation for the flow chart shown in Figure 8.

Author Response

Please see the attachment.

Author Response File: Author Response.pdf