I-F starting method with smooth transition to EMF based motion-sensorless vector control of PM synchronous motor/generator

Frede Blaabjerg, Remus Teodorescu, M. Fatu, I. Boldea, G.-D. Andreescu

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

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Abstract

This paper proposes a novel hybrid motion- sensorless control system for permanent magnet synchronous motors (PMSM) using a new robust start-up method called I-f control, and a smooth transition to emf-based vector control. The I-f method is based on separate control of id, iq currents with the reference currents id* = 0 and iq* constant, and the reference frequency having ramp variation. This solution allows ultra low- speed sensorless control without initial rotor-position estimation, and without machine parameters identification. A first-order lag compensator is employed to ensure a smooth transition from I-f to emf sensorless vector control when the frequency reaches a certain level, and back. The PMSM rotor position and speed are extracted by using a PLL state-observer from the estimated rotor-flux, which is based on an equivalent integrator in close- loop with a PI speed-adaptive compensator to eliminate dc-offset and phase-delay. Digital simulations for PMSM start-up with full load torque are presented for different initial rotor-positions. The transitions from I-f to emf motion-sensorless vector control and back as well, at very low-speeds, are fully validated by experimental results. This method is suitable for both surface and interior PMSMs, but the paper refers directly only to surface PMSM. Other field of application might be in wind generators safe (faster) self-starting when they are connected to the grid, or moving the rotor a little for inspections/repairs, and for general industrial variable speed drives where slightly hesitant but full- load self-starting is allowable.
Original languageEnglish
Title of host publicationPower Electronics Specialists Conference, 2008. PESC 2008. IEEE
Number of pages7
PublisherIEEE
Publication date2008
Pages1481-1487
ISBN (Print)978-1-4244-1667-7
DOIs
Publication statusPublished - 2008
EventIEEE 39thPower Electronics Specialists Conference - Rhodes, Greece
Duration: 15 Jun 200819 Jun 2008

Conference

ConferenceIEEE 39thPower Electronics Specialists Conference
CountryGreece
CityRhodes
Period15/06/200819/06/2008

Fingerprint

Synchronous motors
Rotors
Permanent magnets
Electric potential
Variable speed drives
Phase locked loops
Loads (forces)
Identification (control systems)
Repair
Torque
Inspection
Fluxes
Control systems
Sensorless control

Cite this

Blaabjerg, F., Teodorescu, R., Fatu, M., Boldea, I., & Andreescu, G-D. (2008). I-F starting method with smooth transition to EMF based motion-sensorless vector control of PM synchronous motor/generator. In Power Electronics Specialists Conference, 2008. PESC 2008. IEEE (pp. 1481-1487). IEEE. https://doi.org/10.1109/PESC.2008.4592146
Blaabjerg, Frede ; Teodorescu, Remus ; Fatu, M. ; Boldea, I. ; Andreescu, G.-D. / I-F starting method with smooth transition to EMF based motion-sensorless vector control of PM synchronous motor/generator. Power Electronics Specialists Conference, 2008. PESC 2008. IEEE. IEEE, 2008. pp. 1481-1487
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abstract = "This paper proposes a novel hybrid motion- sensorless control system for permanent magnet synchronous motors (PMSM) using a new robust start-up method called I-f control, and a smooth transition to emf-based vector control. The I-f method is based on separate control of id, iq currents with the reference currents id* = 0 and iq* constant, and the reference frequency having ramp variation. This solution allows ultra low- speed sensorless control without initial rotor-position estimation, and without machine parameters identification. A first-order lag compensator is employed to ensure a smooth transition from I-f to emf sensorless vector control when the frequency reaches a certain level, and back. The PMSM rotor position and speed are extracted by using a PLL state-observer from the estimated rotor-flux, which is based on an equivalent integrator in close- loop with a PI speed-adaptive compensator to eliminate dc-offset and phase-delay. Digital simulations for PMSM start-up with full load torque are presented for different initial rotor-positions. The transitions from I-f to emf motion-sensorless vector control and back as well, at very low-speeds, are fully validated by experimental results. This method is suitable for both surface and interior PMSMs, but the paper refers directly only to surface PMSM. Other field of application might be in wind generators safe (faster) self-starting when they are connected to the grid, or moving the rotor a little for inspections/repairs, and for general industrial variable speed drives where slightly hesitant but full- load self-starting is allowable.",
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Blaabjerg, F, Teodorescu, R, Fatu, M, Boldea, I & Andreescu, G-D 2008, I-F starting method with smooth transition to EMF based motion-sensorless vector control of PM synchronous motor/generator. in Power Electronics Specialists Conference, 2008. PESC 2008. IEEE. IEEE, pp. 1481-1487, Rhodes, Greece, 15/06/2008. https://doi.org/10.1109/PESC.2008.4592146

I-F starting method with smooth transition to EMF based motion-sensorless vector control of PM synchronous motor/generator. / Blaabjerg, Frede; Teodorescu, Remus; Fatu, M.; Boldea, I.; Andreescu, G.-D.

Power Electronics Specialists Conference, 2008. PESC 2008. IEEE. IEEE, 2008. p. 1481-1487.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

TY - GEN

T1 - I-F starting method with smooth transition to EMF based motion-sensorless vector control of PM synchronous motor/generator

AU - Blaabjerg, Frede

AU - Teodorescu, Remus

AU - Fatu, M.

AU - Boldea, I.

AU - Andreescu, G.-D.

N1 - INSPEC Accession Number:10155055

PY - 2008

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N2 - This paper proposes a novel hybrid motion- sensorless control system for permanent magnet synchronous motors (PMSM) using a new robust start-up method called I-f control, and a smooth transition to emf-based vector control. The I-f method is based on separate control of id, iq currents with the reference currents id* = 0 and iq* constant, and the reference frequency having ramp variation. This solution allows ultra low- speed sensorless control without initial rotor-position estimation, and without machine parameters identification. A first-order lag compensator is employed to ensure a smooth transition from I-f to emf sensorless vector control when the frequency reaches a certain level, and back. The PMSM rotor position and speed are extracted by using a PLL state-observer from the estimated rotor-flux, which is based on an equivalent integrator in close- loop with a PI speed-adaptive compensator to eliminate dc-offset and phase-delay. Digital simulations for PMSM start-up with full load torque are presented for different initial rotor-positions. The transitions from I-f to emf motion-sensorless vector control and back as well, at very low-speeds, are fully validated by experimental results. This method is suitable for both surface and interior PMSMs, but the paper refers directly only to surface PMSM. Other field of application might be in wind generators safe (faster) self-starting when they are connected to the grid, or moving the rotor a little for inspections/repairs, and for general industrial variable speed drives where slightly hesitant but full- load self-starting is allowable.

AB - This paper proposes a novel hybrid motion- sensorless control system for permanent magnet synchronous motors (PMSM) using a new robust start-up method called I-f control, and a smooth transition to emf-based vector control. The I-f method is based on separate control of id, iq currents with the reference currents id* = 0 and iq* constant, and the reference frequency having ramp variation. This solution allows ultra low- speed sensorless control without initial rotor-position estimation, and without machine parameters identification. A first-order lag compensator is employed to ensure a smooth transition from I-f to emf sensorless vector control when the frequency reaches a certain level, and back. The PMSM rotor position and speed are extracted by using a PLL state-observer from the estimated rotor-flux, which is based on an equivalent integrator in close- loop with a PI speed-adaptive compensator to eliminate dc-offset and phase-delay. Digital simulations for PMSM start-up with full load torque are presented for different initial rotor-positions. The transitions from I-f to emf motion-sensorless vector control and back as well, at very low-speeds, are fully validated by experimental results. This method is suitable for both surface and interior PMSMs, but the paper refers directly only to surface PMSM. Other field of application might be in wind generators safe (faster) self-starting when they are connected to the grid, or moving the rotor a little for inspections/repairs, and for general industrial variable speed drives where slightly hesitant but full- load self-starting is allowable.

U2 - 10.1109/PESC.2008.4592146

DO - 10.1109/PESC.2008.4592146

M3 - Article in proceeding

SN - 978-1-4244-1667-7

SP - 1481

EP - 1487

BT - Power Electronics Specialists Conference, 2008. PESC 2008. IEEE

PB - IEEE

ER -

Blaabjerg F, Teodorescu R, Fatu M, Boldea I, Andreescu G-D. I-F starting method with smooth transition to EMF based motion-sensorless vector control of PM synchronous motor/generator. In Power Electronics Specialists Conference, 2008. PESC 2008. IEEE. IEEE. 2008. p. 1481-1487 https://doi.org/10.1109/PESC.2008.4592146