Control and Commissioning of Sensorless Synchronous Motor Drives

• Sensorless (or self-sensing, or encoder-less) control refers to closed-loop controlling the Synchronous Reluctance motor without using a rotor position encoder for synchronization of the control reference frame to the rotor phase angle and/or for evaluation of the speed of revolution. A novel technique is envisaged to tackle the adverse influence of stator resistance variations and inverter voltage errors on stability of position observer. The proposed scheme, Adaptive Projection vector for Position error estimation (APP), is inherently immune to voltage estimate errors on the maximum torque per amps (MTPA) trajectory. (2020)

• Varatharajan, Anantaram; Brunelli, Dario; Ferrari, Simone; Pescetto, Paolo; Pellegrino, ... (2021)
  syreDrive: Automated Sensorless Control Code Generation for Synchronous Reluctance Motor Drives. In: 2021 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD), Moderna, Italy, 8-9 April 2021, pp. 192-197. ISBN: 978-1-7281-7615-4
  Contributo in Atti di Convegno (Proceeding)
• Varatharajan, Anantaram; Pellegrino, Gianmario; Armando, Eric; Hinkkanen, Marko (2021)
  Sensorless Synchronous Motor Drives: A Review of Flux Observer-based Position Estimation Schemes using the Projection Vector Framework. In: IEEE TRANSACTIONS ON POWER ELECTRONICS, vol. IEEE Transactions on Power Electronics, pp. 1-10. ISSN 0885-8993
  Contributo su Rivista
• Varatharajan, Anantaram (2021)
  Generalized Sensorless and Advanced Control of Synchronous Reluctance Machines. relatore: PELLEGRINO, GIANMARIO; CURRI, VITTORIO; , 33. XXXIII Ciclo, P.: 216
  Doctoral Thesis
• Varatharajan, Anantaram; Pellegrino, Gianmario; Armando, Eric (2021)
  Direct Flux Vector Control of Synchronous Motor Drives: A Small-Signal Model for Optimal Reference Generation. In: IEEE TRANSACTIONS ON POWER ELECTRONICS, pp. 1-10. ISSN 0885-8993
  Contributo su Rivista
• Varatharajan, Anantaram; Pescetto, Paolo; Pellegrino, Gianmario (2020)
  Sensorless Synchronous Reluctance Motor Drives: A Full-Speed Scheme using Finite-Control-Set MPC in a Projection Vector Framework. In: IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, vol. 56, pp. 3809-3818. ISSN 0093-9994
  Contributo su Rivista
• Varatharajan, Anantaram; Pellegrino, Gianmario; Armando, Eric; Hinkkanen, Marko (2020)
  Sensorless Control of Synchronous Motor Drives: Accurate Torque Estimation and Control under Parameter Errors. In: IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS, pp. 1-10. ISSN 2168-6777
  Contributo su Rivista
• Varatharajan, Anantaram; Pellegrino, Gianmario (2020)
  Sensorless Synchronous Reluctance Motor Drives: A Projection Vector Approach for Stator Resistance Immunity and Parameter Adaptation. In: IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, vol. 56, pp. 5003-5012. ISSN 0093-9994
  Contributo su Rivista
• Varatharajan, Anantaram; Pellegrino, Gianmario; Armando, Eric (2020)
  Self-Commissioning of Synchronous Reluctance Motor Drives: Magnetic Model Identification with Online Adaptation. In: 2020 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, USA, 11-15 Oct. 2020, pp. 5353-5360. ISBN: 978-1-7281-5826-6
  Contributo in Atti di Convegno (Proceeding)
• Varatharajan, Anantaram; Pellegrino, Gianmario; Armando, Eric (2020)
  Sensorless Synchronous Reluctance Motor Drives: Auxiliary Flux based Position Observer. In: IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS, pp. 1-10. ISSN 2168-6777
  Contributo su Rivista
• Varatharajan, Anantaram; Pescetto, Paolo; Pellegrino, Gianmario (2019)
  Sensorless Self-Commissioning of Synchronous Reluctance Machine with Rotor Self-Locking Mechanism. In: IEEE Energy Conversion Congress and Exposition (ECCE 2019), Baltimore, pp. 812-817
  Contributo in Atti di Convegno (Proceeding)
• Varatharajan, Anantaram; Pellegrino, Gianmario (2019)
  Sensorless Control of Synchronous Reluctance Motor Drives: Improved Modeling and Analysis Beyond Active Flux. In: 2019 IEEE International Electric Machines & Drives Conference (IEMDC), San Diego, USA, 12-15 May 2019, pp. 419-426. ISBN: 978-1-5386-9350-6
  Contributo in Atti di Convegno (Proceeding)
• Varatharajan, Anantaram; Pellegrino, Gianmario (2019)
  Sensorless Synchronous Reluctance Motor Drives: A Sensitivity Analysis Framework and Design to Achieve Stator Resistance Immunity. In: 2019 IEEE 10th International Symposium on Sensorless Control for Electrical Drives (SLED), Torino, 6/9/19 - 9/9/19, pp. 1-6. ISBN: 978-1-7281-0766-0
  Contributo in Atti di Convegno (Proceeding)
• Varatharajan, A; Pellegrino, Gianmario (2019)
  Sensorless Synchronous Reluctance Motor Drives: A General Adaptive Projection Vector Approach for Position Estimation. In: IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, pp. 1-1. ISSN 0093-9994
  Contributo su Rivista
• Varatharajan, Anantaram; Pescetto, Paolo; Pellegrino, Gianmario (2018)
  Injectionless Sensorless Control of Synchronous Reluctance Machine for Zero to Low Speeds Region. In: International Symposium on Sensorless Control for Electrical Drives (SLED), Helsinki, Finland, September 13-14
  Contributo in Atti di Convegno (Proceeding)
• Savio, Paolo; Varatharajan, Anantaram; Vizzaccaro, Erasmo; Abdelfattah, Sherif; Franco, ... (2018)
  Control of power electronics through a photonic bus: Feasibility and prospects. In: JOURNAL OF SENSOR AND ACTUATOR NETWORKS, vol. 7. ISSN 2224-2708
  Contributo su Rivista
• Varatharajan, Anantaram; Savio, Paolo; Vizzaccaro, Erasmo; Abrate, Silvio; Pellegrino, ... (2018)
  Remotized Control of Power Electronic Devices Exploiting a Plastic Optical Fiber Photonic Bus. In: 20th International Conference on Transparent Optical Networks, ICTON 2018, Bucharest (RO), 2018, pp. 1-4. ISSN 2162-7339. ISBN: 9781538666043
  Contributo in Atti di Convegno (Proceeding)

• A method and a device for controlling a three-phase motor. Brevetto internazionale
  Inventori: Gianmario Pellegrino Paolo Pescetto Anantaram Varatharajan
• Method for Spatial Harmonic Flux-Map and Torque-Map Identification Without a Torque Transducer. Brevetto nazionale e internazionale
  Inventori: Simone Ferrari Gianmario Pellegrino Paolo Pescetto Anantaram Varatharajan
• Online MTPA Tracking for Synchronous Machines. Brevetto internazionale
  Inventori: Gianmario Pellegrino Anantaram Varatharajan
• Fast High-Frequency Current Injection for Machine Controllers. Brevetto internazionale
  Inventori: Gianmario Pellegrino Anantaram Varatharajan
• Locus of Incremental Saliency Tracking (LIST). Brevetto internazionale
  Inventori: Gianmario Pellegrino Anantaram Varatharajan
• Adaptive Projection vector for Position error estimation (APP) in sensorless synchronous reluctance motor drives for immunity from stator resistance variation. Brevetto nazionale e internazionale
  Inventori: Gianmario Pellegrino Anantaram Varatharajan