Validation of Sliding Mode and Passivity Control in High-Power Quadratic Buck Converter Through Rapid Prototyping

Abstract

This document introduces a rapid control prototyping (RCP) approach applied to the industrial sector using a non-linear Quadratic Buck Converter (QBC) DC-DC. The goal is to reduce manufacturing costs for materials and electronic devices while enhancing the power quality in the system's response. An experimental setup is utilized to create a functional model, converting 380 VDC to 48 VDC at a power level of 500 W. dSPACE CP1103 is employed to implement Model in the Loop (MIL), Software in the Loop (SIL), and Hardware in the Loop (HIL) simulations. Modern control techniques, including sliding mode control (SMC) and passivity-based control (PBC), are employed to devise a robust control scheme capable of maintaining stability in real-time (RT) and resisting disturbances. The document concludes with a performance analysis, PI, Cp, CpK, Z-score, and ITAE considering response time, signal accuracy, system stability, and resource utilization efficiency.INDEX TERMS dSPACE, hardware in the loop (HIL), Model in the loop (MIL), Passivity Control, performance indices, Quadratic Buck Converter (QBC), Rapid control prototyping (RCP), real-time (RT), sliding mode Control, software in the loop (SIL).

Validation of Passivity-Based Control and Array PID in High-Power Quadratic Buck Converter Through Rapid Prototyping

“…The second phase consists of rapidly prototyping the design using the dSPACE 1103, where the passivity and the PID array within the converter undergo validation through simulated testing using Control Desk, a tool utilized for the development and setup of real-time control systems. This validation is conducted before experimental testing, comparing the simulated results with the actual electrical response observed on the oscilloscope, as previously described (Acosta-Rodríguez, 2023) [43]. This document provides a comprehensive investigation of the dynamic Quadratic Buck Converter (QBC) system.…”

“…The circuits QBC, generated through MATLAB software, depict the ON and OFF phases as shown in Figure 1, also referencing figures 1 and 2 from the previous paper [43]. Below, we outline the equations that characterize the quadratic Buck circuits (QBC).…”

“…This section is reproduced from [43] This article has been accepted for publication in IEEE Access. This is the author's version which has not been fully edited and content may change prior to final publication.…”

“…This section is reproduced from [43] V. QUADRATIC BUCK LINEAR MODEL primary goal, as per the model, is to yield the Transfer Function elucidating the system's behavior, resulting in the following matrix: The formula for the transfer function is expressed as: 𝐺(𝑠) = 𝑌 * [𝑆𝐼 − 𝐴] −1 * 𝐵𝑢 (37) Solving equation 37, we arrive at the transfer function 𝐺(𝑠) This section is based on the findings of [43].…”

“…Likewise, the condition of the coil is affected by the ON state, as seen in Figure 3, where it is part of the OFF state. Here, the change is minimal, as it initiates with a negative gradient when the equation is multiplied by a lesser value, signifying a negative gradient like the slope calculation [43]. With the application of equation ( 34), the expression is simplified to:…”