Multiple load operation of indirect matrix converter for different frequencies using symmetrical space vector modulation

• Published in: International journal of circuit theory and applications Vol. 51; no. 12; pp. 5926 - 5950
• Main Authors: Ahmad Khanday, Sajid, Hamid Bhat, Abdul, Chandra Sekhar, Obbu
• Format: Journal Article
• Language: English
• Published: Bognor Regis Wiley Subscription Services, Inc 01.12.2023
• Subjects: A C motors; Alternative energy sources; Clamping circuits; Electric vehicles; Energy conversion; indirect matric converter (IMC); Mathematical analysis; matrix converter (MC); Matrix converters; multiple load operation; Permanent magnets; PMSM; Pulse duration modulation; Space vector modulation; Speed control; Static loads; symmetrical SVPWM; Wind power generation
• ISSN: 0098-9886; 1097-007X
• DOI: 10.1002/cta.3729

This study describes an indirect matrix converter (IMC) that uses symmetrical space vector pulse width modulation (SSVPWM) to feed two loads from a single DC link at a variable frequency. Output stage‐I is connected to the static load, while output stage‐II is connected to the PMSM for speed control. It is appropriate for drive systems with variable frequency, such as those seen in wind power generation and aviation. In recent years, significant studies on AC‐AC converters have been conducted due to the rising interest in electric cars and renewable energy. The performance of permanent magnet motors is better than that of other types of AC motors due to their superior performance and residual flux permanent magnets. Contrary to normal back‐to‐back power conversion systems, IMC does not necessitate the use of capacitors in the DC‐link, decoupled control between the two‐stages, a simple clamping circuit or zero current switching in the rectifier stage, allowing the system's volume to be reduced. It is investigated how well the two output stages of the proposed IMC perform. To illustrate the benefits of the suggested IMC design, an improved SSVPWM is employed, and MATLAB/SIMULINK‐based simulations were performed to validate the efficacy of the modulation mechanism. In addition, the real‐time implementation of the work was validated using a real‐time simulator, OPAL‐RT (OP4510). This study describes an IMC that uses improved SSVPWM to feed two loads from a common DC link at different frequencies (50/60 Hz), one static load (3‐ ϕ RL) at 50 Hz while the other is a dynamic load (PMSM) at 60 Hz for speed control. To validate the modulation mechanism, MATLAB/Simulink‐based simulations and real‐time implementations have been done.