Compensation of Inverter Nonlinear Distortion Effects for Signal-Injection-Based Sensorless Control

Salt, Daniel; Drury, David; Holliday, Derrick; Griffo, Antonio; Sangha, P.; Dinu, A.

doi:10.1109/tia.2011.2161430

Cited by 55 publications

(15 citation statements)

References 20 publications

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“…where [26]. In order to suppress non-ideal current harmonics and torque ripples, compensation for nonlinear distortion of VSI is necessary.…”

Section: Nonlinear Distortion Of Vsimentioning

confidence: 99%

DC-Link Current Control with Inverter Nonlinearity Compensation for Permanent Magnet Synchronous Motor Drives

Wang¹,

Wu²,

Chu³

2020

Energies

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For permanent magnet synchronous motors (PMSMs) supplied with a voltage source inverter, current control strategies are commonly implemented under the synchronously rotating reference frame. In order to simplify the system structure, three-phase currents can be measured with a single DC-link current sensor using the phase current reconstruction technique. However, it still needs to follow the conventional AC current control approach. In this paper, a DC-link current control method for PMSMs is proposed to further simplify the control system. The problem of phase current control was separated into the problems of amplitude control and phase control. Then, amplitude control was achieved using a closed-loop controller directly tracking the DC-link current; while phase control was achieved by AC-side pulse width modulation (PWM) following the phase angle of back electromotive force. The compensation for nonlinear distortion of the inverter was taken into account during the control process. Finally, the proposed method realized three-phase current control with a single current sensor and controller, and achieved the purpose of electromagnetic torque control. Experimental results demonstrate the effectiveness of the proposed method.

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“…where [26]. In order to suppress non-ideal current harmonics and torque ripples, compensation for nonlinear distortion of VSI is necessary.…”

Section: Nonlinear Distortion Of Vsimentioning

confidence: 99%

DC-Link Current Control with Inverter Nonlinearity Compensation for Permanent Magnet Synchronous Motor Drives

Wang¹,

Wu²,

Chu³

2020

Energies

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“…The DC bus voltage is measured, and reference voltage is fed to the extended nonlinear state observer instead of actual output voltage, along with dead time compensation using parameters available in datasheet [17][18][19]. Digital delay in SVPWM updating can be problematic in high speed range, and is well compensated in software by postponing the phase of reference voltage in αβ frame [9,20].…”

Section: Experimental Studiesmentioning

confidence: 99%

Sensorless IPMSM Drives based on Extended Nonlinear State Observer with Parameter Inaccuracy Compensation

Mao

Liu

Chen

2014

Journal of international Conference on Electrical Machines and

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-This paper proposed a novel high performance sensorless control scheme for IPMSM based on an extended nonlinear state observer. The gain-matrix of the observer has been derived by using state linearization method. Steady state errors in estimated rotor position and speed due to parameter inaccuracy have been analyzed, and an equivalent flux error is defined to represent the overall effect of parameter errors contributing to the wrong convergence of the estimated rotor speed as well as rotor position. Then, an online compensation strategy was proposed to limit the estimation errors in rotor position and speed. The effectiveness of the extended nonlinear state observer is validated through simulation and experimental test.

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“…In [11], [13], and [14] the timing nonlinearity interferes with the signal-injection-based sensorless rotor position estimation in motor control applications. In [15]- [18] the dead time effects in the phase leg are analyzed and a possible feedforward compensation method is presented.…”

Section: Igbt Phase Leg Timing and Filter Output Voltagementioning

confidence: 99%

IGBT phase leg non-idealities in active du/dt output filtering

Tyster

Kärkkäinen

Strom

et al. 2013

2013 15th European Conference on Power Electronics and Applications (EPE)

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Active du/dt output filtering is a previously presented method to reduce the variable-speed AC drive cable reflection overvoltages. It uses a passive LC low-pass filter and a pulse pattern from IGBT phase leg to control the filter output voltage slopes. The pulse pattern has to be formed in accordance to the LC filter resonant frequency, and timing errors will show up as additional overshoot at the filter output voltage, eventually reaching motor as well. IGBT phase leg output voltage distortion versus the logiclevel command timing affects the active du/dt filtering performance. This paper evaluates the most relevant error sources in an experimental setup for 22 kW motor with a filter for 200 m cable length. Analysis of the filter under timing errors based on measurement results is shown. The timing distortions have an effect, but in this particular case, the practical implications are not severe as the average overshoot due to timing errors was found to be in range on 10 %.

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Compensation of Inverter Nonlinear Distortion Effects for Signal-Injection-Based Sensorless Control

Cited by 55 publications

References 20 publications

DC-Link Current Control with Inverter Nonlinearity Compensation for Permanent Magnet Synchronous Motor Drives

DC-Link Current Control with Inverter Nonlinearity Compensation for Permanent Magnet Synchronous Motor Drives

Sensorless IPMSM Drives based on Extended Nonlinear State Observer with Parameter Inaccuracy Compensation

IGBT phase leg non-idealities in active du/dt output filtering

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