Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
Split-phase and Tapped Stator Winding Induction Machines for LCI- and VSI-FED Hybrid Drive Application
Categories for this Invention
Category – Advanced Motor Drive Systems
Applications– Industrial motor drive applications.
Industry- Automotive Manufacturing, Smart Transportation
Market – The electric drives market, valued at USD 24.5 billion in 2023, is projected to grow to USD 31.4 billion by 2028, with a CAGR of 5.1%.
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Problem Statement
- Medium voltage motor drive technologies vary in cost and performance, from economical LCI fed synchronous drives to advanced, costly Multilevel VSI options.
- Existing solutions face trade-offs: cheaper options like LCI drives have operational limitations, while advanced drives offer better performance at a higher cost.
- The challenge is to develop medium voltage motor drives that balance cost-effectiveness with operational flexibility and performance, addressing limitations in current topologies.
Technology
- The invention proposes a hybrid motor drive system utilizing both thyristor-based Load Commutated Inverters (LCI) and low voltage IGBT-based Voltage Source Inverters (VSI) to separately handle reactive and active power requirements, respectively, improving efficiency and performance.
- Special winding configurations are introduced to mitigate torque oscillation issues in induction motor drives, enhancing stability and operational reliability.
- Various configurations of stator windings are presented, each optimized for hybrid LCI-VSI operation, offering flexibility and adaptability in different motor drive applications.
Key Features / Value Proposition
Cost Efficiency:
- Integration of thyristor-based LCI and low voltage IGBT-based VSI optimizes cost-effectiveness in high-power industrial motor drives.
Enhanced Performance:
- Special winding configurations address torque oscillation challenges, ensuring smooth and reliable operation in diverse industrial settings.
Flexibility & Adaptability:
- Various stator winding configurations cater to different application needs, offering flexibility and adaptability to changing industry requirements.
Efficient Power Management:
- Separate handling of reactive and active power requirements improves overall power management efficiency, reducing energy wastage.
Operational Reliability:
- Hybrid LCI-VSI technology enhances operational reliability by leveraging the strengths of both thyristor and IGBT-based systems, minimizing downtime.
Market Competitiveness:
- The value proposition lies in delivering a balanced solution that combines cost-efficiency, performance optimization, and operational reliability, ensuring competitiveness in the industrial motor drive market.
Questions about this Technology?
Contact For Licensing
sm-marketing@imail.iitm.ac.in
ipoffice2@iitm.ac.in
Research Lab
Prof. Kamalesh Hatua
Department of Electrical Engineering
Intellectual Property
- IITM IDF Ref. 1461
- IN 493781 – Patent Granted
Technology Readiness Level
TRL – 4
Technology validated in lab scale.