Novel rotor position extraction based on carrier frequency component method (CFCM) using two reference-frames for IPM drives

Mamo, Mengesha; Ide, K.; Sawamura, M.; Oyama, Jun

doi:10.1109/iecon.2001.975994

Cited by 11 publications

(18 citation statements)

References 8 publications

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“…Hence, the total energy stored in the system at the end of the current pulse, which will be dissipated afterwards, now includes the extra term (11), dependent on ϑ. In fact, consider the electromagnetic torque generated by the application of a current pulse, given by…”

Section: B Current Pulses Methods With Oscillating Rotormentioning

confidence: 99%

Benefits of Direct Phase Voltage Measurement in the Rotor Initial Position Detection for Permanent-Magnet Motor Drives

Oboe

Tinazzi

Zigliotto

2015

IEEE Trans. Ind. Electron.

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This paper shows how the problem of estimating the initial rotor position in permanent-magnet sensorless drives can benefit from the availability of a direct measurement of motor phase voltages. Two different estimation methods are presented for this purpose. The first is a readjustment of a classic procedure based on the detection, by means of the injection of voltage test pulses, of inductance variations due to motor saliencies, from which it is then possible to infer the position of the rotor. Since the application of irregular test pulses may increase the estimation uncertainties, the available voltage measurement is exploited to implement a closed-loop amplitude control of the test pulses. The second method is introduced both to overcome an issue related to the digital measurement approach adopted in this paper and to allow position estimation even in a motor with no relevant saliency, a case for which the first method is inappropriate. The effectiveness of the proposed solutions is validated by several experimental tests, which are carried out on two motors with different saliency properties

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Section: B Current Pulses Methods With Oscillating Rotormentioning

confidence: 99%

Benefits of Direct Phase Voltage Measurement in the Rotor Initial Position Detection for Permanent-Magnet Motor Drives

Oboe

Tinazzi

Zigliotto

2015

IEEE Trans. Ind. Electron.

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“…In these papers, the injection frequency was increased up to a half of the PWM switching frequency due to the discrete-type filter implementation and delay issues in the demodulation process [16]. In [8] and [9], the PWM switching frequency signal injection has been tried already. However, the PWM switching patterns have to be modified, the current should be measured at the specified time point in the switching period, and the time point is varying.…”

Section: Proposed Pwm Switching Frequency Signal Injection Sensomentioning

confidence: 99%

“…To examine the current-voltage relationship, pulse width modulation (PWM) current ripple can be used [7]- [10]. By measuring the current variation according to the voltage vector variation in a PWM period, inductance can be calculated directly [7]- [9] or estimated with a nonlinear estimator [10]. However, these methods require the modification of the PWM switching pattern because the current variation in the conventional space vector PWM (SVPWM) is too small to be used for the calculation of the inductance.…”

Section: Introductionmentioning

confidence: 99%

PWM Switching Frequency Signal Injection Sensorless Method in IPMSM

Kim

Park

Sul

2012

IEEE Trans. on Ind. Applicat.

214

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The rotor position of an interior permanent-magnet synchronous machine (IPMSM) can be estimated without a position sensor by signal injection sensorless control at standstill and/or in very low speed rotating condition. In the signal injection sensorless control, however, the fundamental control performance is limited by the frequency of the injected signal, and no negligible acoustic noise is generated. If the frequency of the injected voltage signal would increase to pulsewidth modulation (PWM) switching frequency and if the switching frequency is near or above audible range, the dynamics of the sensorless control can be improved, and the acoustic noise can be remarkably reduced or totally eliminated. This paper describes how to extract the rotor position information of IPMSM using the voltage signal injection whose frequency is the same as the PWM switching frequency. Compared to the conventional heterodyning process, the proposed method is simple to implement and appropriate for PWM switching frequency signal injection. The high-frequency voltage signal can be injected in the stationary reference frame or in the estimated rotor reference frame. In this paper, the 5-and 16-kHz signal injections are proposed, implemented, and compared. The experimental results confirm the effectiveness of the proposed method.

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“…Because the high-frequency reactance X is much larger than the stator resistance, s R , and the injected high-frequency, h ω , is much larger than the electrical angular frequency, r ω , (7) can be approximated as (8) and by the same way, the qaxis voltage equation can be approximated as (9).…”

Section: Operation Principle Of Smiirmentioning

confidence: 99%

Sensorless control of synchronous machine with an inverter integrated rotor

Choe

Jung

Sul

2013

2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)

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This paper proposes a new sensorless method for a Synchronous Machine with an Inverter Integrated Rotor (SMIIR). The SMIIR is a newly developed machine based on the wound rotor synchronous machine (WRSM) but has no brushes and slip-rings. And conventional high-frequency signal injection sensorless methods are based on physical magnetic saliency. Therefore, conventional methods cannot be applied to the SMIIR which has no sufficient magnetic saliency. The proposed sensorless method suggests virtual resistance saliency created by the rotor-side inverter, whose axes can be placed arbitrarily. Based on this virtual saliency the rotor position information is included and excluded in the relationship between the highfrequency stator voltage and stator current. Because the SMIIR already injects high-frequency voltage for the power transfer,there is no need to inject additional voltage for the proposed high-frequency sensorless method. And initial +d axis detection algorithm using the rotor-side inverter without using magnetic saturation is also proposed. The feasibility of the proposed sensorless method was verified by experimental results with the prototype SMIIR.

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Novel rotor position extraction based on carrier frequency component method (CFCM) using two reference-frames for IPM drives

Cited by 11 publications

References 8 publications

Benefits of Direct Phase Voltage Measurement in the Rotor Initial Position Detection for Permanent-Magnet Motor Drives

Benefits of Direct Phase Voltage Measurement in the Rotor Initial Position Detection for Permanent-Magnet Motor Drives

PWM Switching Frequency Signal Injection Sensorless Method in IPMSM

Sensorless control of synchronous machine with an inverter integrated rotor

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