## 1 Introduction  
Current-source inverters (CSIs) are gaining more attention in high-power systems due to their inherent advantages in short-circuit protection, voltage boost, and reliability [1]. However, CSIs appear to be more difficult to modulate and control compared to voltage-source inverters (VSIs). Space vector modulation (SVM) is an efficient modulation technique that provides better quality waveforms, less harmonic distortion, better dynamic performance, and increased efficiency of the system. VSIs have been studied and applied extensively in industry for many years. In contrast, there has been considerably less research work on the modulation and control of the alternative current-source/stiff inverter topology [1, 2]. While quite a few publications on these topics have been made recently, there are hardly any, if any at all, simulation models or application software demo models provided that would help to run and modify the simulations to gain a better insight into the operation of the CSI. Previous studies have described the unique benefits and challenges of CSIs in renewable energy applications. Research conducted by [3] indicates that PWM CSIs provide strong short-circuit protection, high inductor power density, and inherent voltage-boostingcapability, preventing AC line faults and postponing DC link short circuits until inductor saturation. Moreover, CSIs make it possible to invert low-voltage DC sources in a single stage without the use of a boost converter [4]. Recent advancements in modulation techniques, such as the VSI-derived CSI SVM modulator, the direct CSI SVM modulator, and the direct duty ratio PWM (DDPWM) technique, have even improved the performance of inverters. These advances in SVM methods improve the reliability and efficiency of systems and support important technologies such as smart grids, renewable energy, and motor drive solutions. VSI-derived CSI SVM modulators use the VSI space vector modulation technique to drive and control CSIs, resulting in improved performance and reduced total harmonic distortion (THD). A generalized method for adapting VSI modulation strategies to CSI has been proposed, allowing for the immediate application of sophisticated VSI techniques to CSI without additional analysis [5]. The research shows that the generalized modulation approach for CSIs can achieve a harmonic performance equivalent to that of CSIs. One study analyzes VSI topology to introduce the design of a CSI. This means the SVM strategy used for the CSI was inspired by and adapted from techniques used in CSIs, effectively creating a VSI-inspired modulation method for a CSI. The study details this adaptation in its description of the SVM scheme for the CSI. The design reduces hardware costs by 15% compared to conventional methods while maintaining over 95% efficiency [6; 7]. Researchers examined carefully how the SVM approach and the zero-voltage switching (ZVS) technology work together in a CSI system intended to work with low input voltage. In the study, the proposed modulation method achieved SVM control by optimizing the energy storage mode [8; 9]. An SVM model was created and applied to both CSIs and CSIs in a study that compared the two on their effectiveness in performance under different conditions [10]. The study identified the benefits of SVM over other PWM methods, including better harmonic performance and fundamental output voltage. [PERSON] et al. [11] used SVM in CSIs to highlight the harmonic performance and operational limits of high-power medium voltage drives. Although SVM offers high control flexibility, its application in CSIs should be carefully studied to avoid harmonic distortions. A novel CSI topology was analyzed using space vector modulation, focusing on minimizing output filter components, reducing the ground leakage current, and improving efficiency [12]. A key feature is the proposed SVM strategy, which aims to minimize the THD of the injected grid current and conduction losses.