Position estimation of AC machines at all frequencies using only space vector PWM based excitation

Gao, Qiang; Asher, G.M.; Sumner, Mark; Makyš, Pavol

doi:10.1049/cp:20060073

Cited by 22 publications

(40 citation statements)

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“…The whole vector control structure has been implemented in simulation in the Saber modeling environment. Note the simulation includes a minimum pulse width of 10 us when di/dt measurements are made -a realistic values seen from experimental results of [22]. The results shown in figure 9 demonstrate the validity of the saliency tracking algorithms.…”

Section: Results and Analysis 31 Position And Speed Estimation Undermentioning

confidence: 70%

“…These researches focus on the model based sensorless control, direct torque control and high frequency injections [15,16,17,18,19]. This paper introduces a new method to track the saturation saliency in five-phase PMSM drives to obtain the rotor position through measuring the dynamic currents responses of the motor due to the IGBTs switching actions [20,21,22]. It uses the fundamental PWM waveform obtained using the multi-phase space vector pulse width modulation only.…”

Section: Introductionmentioning

confidence: 99%

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Sensorless speed control of five-phase PMSM drives with low current distortion

Saleh

Sumner

2017

Electr Eng

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Saleh, Kamel and Sumner, Mark (2017) A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription.For more information, please contact eprints@nottingham.ac.uk Sensorless Speed Control of Five-Phase PMSM Drives with Low Current DistortionAbstract This paper introduces a design for a sensorless control of a five-phase PMSM drive working at low and zero speeds with low current distortion. The rotor position is obtained through tracking the saturation saliency by measuring the dynamic currents responses of the motor due to the IGBTs switching actions. It uses the fundamental PWM waveform obtained using the multi-phase space vector pulse width modulation only. The saliency tracking algorithm used in this paper doesn't only improve the quality of the estimated position signals but also guarantees a minimum current distortion through reducing the modifications introduced on the PWM waveform. Simulation results are provided to verify the effectiveness of the proposed strategy for saliency tracking and current distortion minimizing of a five-phase PMSM motor drive over a wide speed ranges under different load conditions.

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Section: Results and Analysis 31 Position And Speed Estimation Undermentioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Sensorless speed control of five-phase PMSM drives with low current distortion

Saleh

Sumner

2017

Electr Eng

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“…It is possible to track the saliency using the PWM signals in a multilevel inverter in similar way to that introduced in [6] for a 2-level inverter without interrupting the multilevel inverter normal operation because of the test vectors. Figure 11 shows the Type0 switching sequence.…”

Section: Tracking the Saliency In Multilevel Invertermentioning

confidence: 99%

“…The estimated position signals Pa, Pb and Pc from obtained from table 5 are used as the input to a mechanical observer [14] to obtain the speed ^ and a "cleaned" position ^. Note the simulation includes a minimum pulse width of 10us when di/dt measurements are made -a realistic values seen from experimental results of [6,9]. This estimated speed …”

Section: Fully Sensorless Speed Controlmentioning

confidence: 99%

“…At low and zero speed, some form of additional excitation has been proposed, such as the injection of a high frequency (HF) voltage or current [1][2][3] or the injection of test pulses [4][5][6]. However, these techniques introduce significant additional current distortion either due to the injected signals themselves (as in the HF injection methods and the INFORM method [4]) or due to the insertion of the minimum pulse width in the operation of the drive system when applying the Fundamental PWM Excitation method (FPE) [6]. This distortion causes audible noise, torque pulsations and increases the system losses.…”

Section: Introductionmentioning

confidence: 99%

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Modelling and Simulation of a Sensorless Control of a True Asymmetric Cascade H-Bridge Multilevel Inverter PMSM Drives

Saleh¹,

Sumner²

2016

IJPEDS

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This paper introduces a new method to track the saliency of an AC motor fed by a multilevel converter through measuring the dynamic current response of the motor line currents due the IGBT switching actions. The method uses only the fundamental PWM waveform (i.e there is no modification to the operation of the multilevel converter) similar to the fundamental PWM method proposed for a 2-level converter. Simulation results are provided to demonstrate the performance of the complete sensorless speed control of a PM motor driven by such a converter over a wide speed range. Finally the paper introduces a comparison between the 2-level converter and the multilevel converter in terms of the reduction of the total harmonic distortion (THD) using the fundamental PWM method in both cases.

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Sensorless Control of a PMSM Drive Post an Open Circuit Failure Based on 3D‐SVPWM Technique

Saleh

Sumner

2022

IEEJ Transactions Elec Engng

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This paper presents a novel technique to maintain the PMSM Drive operation post the failure in one phase and the failure of the speed sensor occur simultaneously. The PMSM motor is driven by a fault-tolerant inverter. The use of the fault-tolerant inverter associated with the using of the 3-Dimension space vector pulse width modulation (3-D SVPWM) allow the PMSM drive to maintain its performance post the failure in one phase. Moreover, the stability of the PMSM drive system is furtherly enhanced through utilizing a novel algorithm to obtain the rotor position and speed post the failure in the speed sensor. The algorithm is based on measuring the transient response of the remaining healthy currents post the failure due to the inverter switching actions. The results that are obtained through simulation prove the reliability of the system to maintain its operation post the failure in one phase of the motor and the failure in the speed sensor occurred simultaneously. Also, the results demonstrate the effectiveness of the proposed technique to maintain the performance of the PMSM drive system under different speeds steps and load conditions post the failure.

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Position estimation of AC machines at all frequencies using only space vector PWM based excitation

Cited by 22 publications

References 0 publications

Sensorless speed control of five-phase PMSM drives with low current distortion

Sensorless speed control of five-phase PMSM drives with low current distortion

Modelling and Simulation of a Sensorless Control of a True Asymmetric Cascade H-Bridge Multilevel Inverter PMSM Drives

Sensorless Control of a PMSM Drive Post an Open Circuit Failure Based on 3D‐SVPWM Technique

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