Identification of differential inductances of permanent magnet synchronous machines using test current signal injection

Ebersberger, Sebastian; Piepenbreier, Bernhard

doi:10.1109/speedam.2012.6264392

Cited by 39 publications

(27 citation statements)

References 12 publications

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“…The stator resistance is R s = 1Ω, the initial rotor PM flux is ψ PM0 = 0 Wb, and the The proposed inductance observer is insensitive to stator resistance detuning. The resistance error is rejected by the transfer function (11). The estimation test was repeated with R s = 1 Ω, and 2 Ω, and identical results are obtained.…”

Section: A Inductance Observermentioning

confidence: 88%

“…(11) Due to its zero at the origin this transfer function has zero gain for dc and performs a very effective frequency separation. It completely rejects the PM flux, as well as other possible dc offsets.…”

Section: A Inductance Observermentioning

confidence: 99%

“…j cos j sin . (18) The dc voltage bias will be rejected by the flux observer (11) and thus has no impact on the inductance estimation. However, it will cause the rotor to move.…”

Section: A Inductance Observermentioning

confidence: 99%

“…ii) The dqinductances identification at standstill employs high frequency sinusoidal current injection on d and q axis separately (i d * , i q * ), with additional PI-resonant current controllers, and the axis impedances is computed using u d * and u q * reference voltage components at injection frequency obtained through the Fourier analysis [4] or the Goertzel algorithm [11]. iii) The dqinductances are identified at standstill using the estimated position based on signal-injection sensorless control [7].…”

Section: Introductionmentioning

confidence: 99%

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Self-commissioning of electrical parameters for PMSM in sensorless drives

Lascu

Andreescu

2015

2015 Intl Aegean Conference on Electrical Machines &Amp; Power Electronics (ACEMP), 2015 Intl Conference on Optimization of Ele

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PMSM applications in high-performance control, with or without sensors, involve well self-tuning of the controllers and observers to machine parameters with off/on-line identifications for "plug-in" controllers. This paper proposed self-commissioning methods to automatic identify the PMSM electrical parameters (stator resistance, dq-inductances and PM flux) in sensorless drives, sometimes the rotor is allowed to move. No added hardware or off-line manipulation is required. An observer-based equivalent stator resistance identification, including the inverter resistance and dead-time, is developed at standstill by using two dc current injection levels in phase a and the corresponding stator voltage references. A new dq-inductance identification strategy using HF voltage injection at standstill is proposed with two cascaded observers: i) observer of the currentproduced stator flux (without PM flux) -robust to dc offset and PM flux, and then ii) observer of the dq-inductancesbased on the error of the current-produced stator flux. The PM flux is estimated at constant speed with V/f control in two steps: the stator flux without integration, and the rotor position based on the active flux are estimated in αβ stator reference, and then the PM flux is computed in dq rotor reference. The identification methods are validated by simulation results with good results.

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Section: A Inductance Observermentioning

confidence: 88%

Section: A Inductance Observermentioning

confidence: 99%

“…j cos j sin . (18) The dc voltage bias will be rejected by the flux observer (11) and thus has no impact on the inductance estimation. However, it will cause the rotor to move.…”

Section: A Inductance Observermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Self-commissioning of electrical parameters for PMSM in sensorless drives

Lascu

Andreescu

2015

2015 Intl Aegean Conference on Electrical Machines &Amp; Power Electronics (ACEMP), 2015 Intl Conference on Optimization of Ele

View full text Add to dashboard Cite

show abstract

“…Dutta and Rahman for example apply a sinusoidal current to one motor phase while measuring the phase voltages to determine self and mutual inductances [2]. Ebersberger and Piepenbreier use high frequency current signals of small amplitude in the rotororiented dq-reference frame to identify differential inductances [3]. A pseudo random binary sequence voltage signal is used by Mink et al for the same purpose [4].…”

Section: Introductionmentioning

confidence: 99%