A Simple Closed-Loop Active Gate Voltage Driver for Controlling diC/dt and dvCE/dt in IGBTs
Round 1
Reviewer 1 Report
The authors present an IGBT driver for controlling the dic/dt and dvce/dt at the same time. I have a few concerns and comments given as follows.
1. It is always necessary to consider the stability for a closed loop circuit. It is even more important for the proposed driver, which consists of two feedback loops. It is suggested to add the stability analysis of the proposed circuit in the paper.
2. From Table 2, it seems that a high Kv1 could help to alleviate the voltage overshoot. Then, why is kv1 set to 3.5V in this design? Is it possible to further increase Kv1?
3. In page 14, it is mentioned that a negative 15V voltage is used in the driver. How is this negative voltage generated?
Author Response
The Authors Response to Reviewers’ Comments
Manuscript ID. Electronics-423375
Title: "A Simple Closed-Loop Active Gate Voltage Driver for Controlling diC/dt and dvCE/dt in IGBTs"
The authors would like to appreciate the area editor and the reviewers for their precious time and invaluable comments. We have carefully addressed all the comments. The corresponding changes and refinements made in the revised paper are summarized in our response below.
The answer of comments have been mention in the attached file
Author Response File: 
Author Response.pdf
Reviewer 2 Report
The paper deals with a new vision of automatically controlling the di / dt and dvCE/dt in IGBTs. The authors have very well explained the problematic and the originality of their approach. The measurement of di / dt through the bonding wire is attractive, but the experimental implementation is very delicate. The measurement of the voltage vCE is also a delicate point. The switching of an IGBT is a source of very important noise and it is difficult to extract useful information from this switching. By way of example, in all the industrial drivers implementing short-circuit protection systems, there is always a lapse of time between the actual switching instant and the measurement of the vCE which would make it possible to trigger the safety of the system because of the noise due to the commutation. The problem of measuring the voltage across the bonding wire is identical. The authors of the article must absolutely detail the experimental measurement of these both voltages.
The proposed system implements a looped system. The authors can not just test several gain values and claim that the system is optimal with this or that value. To be certain of the stability of the system under all operating conditions, an automatic type approach must be carried out. For the same diC/dt, the measurement of the voltage vEe will depend on the temperature of the module. What are the consequences, from a stability point of view, on the proposed system?
In an industrial gate driver, the secondary stages not only provide the control signals of the power components, but they also ensure the safety of the latter (protection against short circuits, detection of undernourishment, ...) and return to the primary an error signal in case of anomaly. Integrating the proposed system into an industrial gate driver seems complicated. Authors should indicate how they view this integration.
Minor clarifications / minor errors:
Fig 2(a) : if I understood correctly, e corresponds to the mass of the circuit, it is also the negative polarity of the DC bus. E is the emitter of the IGBT and veE is the voltage of the bonding wire.
The voltage vGe represented by an arrow pointing downward should be noted veG. The voltage vGe must be represented by an arrow pointing upward.
Likewise, the voltage vEe represented by an arrow pointing downward must be noted veE and the voltage vCe represented by an arrow pointing upward must be noted veC
Author Response
The Authors Response to Reviewers’ Comments
Manuscript ID. Electronics-423375
Title: "A Simple Closed-Loop Active Gate Voltage Driver for Controlling diC/dt and dvCE/dt in IGBTs"
The authors would like to appreciate the area editor and the reviewers for their precious time and invaluable comments. We have carefully addressed all the comments. The corresponding changes and refinements made in the revised paper are summarized in our response below.
The answers of comments are attached to the attachment.
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
NO
