Development and testing of the torque control for the permanent-magnet synchronous motor

Nakai, Hideo; Ohtani, Hiroki; Satoh, E.; Inaguma, Y.

doi:10.1109/iecon.2001.976001

Cited by 16 publications

(15 citation statements)

References 1 publication

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“…However in the overmodulation range, the inverter output contains low-order harmonic voltage, and it will destabilize the current feedback controller also sensorless control system. Though open loop controllers [8] [9] are the solutions for destabilization, torque response is limited.…”

Section: Shinji Dokimentioning

confidence: 99%

Improve torque response using the inverter overmodulation range in position sensorless control system of PMSM

Akimatsu

Doki

2013

IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society

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In this paper, a method of Permanent Magnet Synchronous Motor(PMSM) position sensorless vector control system in the inverter overmodulation range has been proposed. Operating PMSM in the inverter overmodulation range achieves fast torque response and widens high-speed drive region of PMSM. In the range, however, because of the effect from harmonic currents, a closed loop current control system become unstable further more because of harmonic voltage output from the inverter makes position estimation error and it destabilize sensorless control system. First of all describes mechanism of destabilization of sensorless control system in the overmodulation range. Second of all propose a method which stabilizes control system. Last of all the experimental results show that the proposed method widen high-speed drive region and archives fast torque response.

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Section: Shinji Dokimentioning

confidence: 99%

Improve torque response using the inverter overmodulation range in position sensorless control system of PMSM

Akimatsu

Doki

2013

IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society

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“…A fluxweakening control suitable for quasi six-step operation in the current control-based PMSM drives has been reported in [4]. A square-wave drive has been used for overmodulation [5]. PWM and square-wave drives require different control laws to realize current control in a d-q frame.…”

Section: Introductionmentioning

confidence: 99%

Square-wave operation of direct torque controlled PMSM drive system

Inoue

Maeda

Morimoto

et al. 2013

2013 IEEE Energy Conversion Congress and Exposition

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This paper proposes a square-wave operation of permanent magnet synchronous motor drive system based on direct torque control. It is important to operate in the overmodulation region to maximize the motor output power. In the proposed system, the transition from the PWM drive to the square-wave drive is achieved by comparing the reference values of the stator flux-linkage. The reference values are calculated by the control laws of the maximum torque per ampere and the flux weakening in the M-T frame, which is a reference frame synchronized with the stator flux-linkage vector. Hence, the voltage and current limitations can be achieved by simple mathematical equations. In addition, the proposed system also includes amplitude compensation for an overmodulation PWM drive, armature voltage estimation for a square-wave drive. The effectiveness of the proposed system is experimentally demonstrated.

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“…The dead-beat control method makes tracking error if the modeling error exists. The voltage phase control method [4]- [6] operates voltage phase directly to compensate torque tracking error. It has no inner loop.…”

Section: Introductionmentioning

confidence: 99%

Current control method with control inputs in polar coordinates for SPMSM based on linearized model

Miyajima

Fujimoto

Fujitsuna

2013

2013 IEEE Energy Conversion Congress and Exposition

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SPMSMs (Surface Permanent Magnet Synchronous Motors) are employed for many industrial applications. For quick torque response under voltage limit, voltage phase control method had been proposed. However, it needs to switch the mode of controller. This paper proposes a flux-weakening control method for SPMSM using control inputs in polar coordinates to reduce the number of mode transition. This control method is designed with a precise plant model. In addition, the authors investigate controller design using control inputs in polar coordinates instead of d-axis and q-axis voltage within voltage limit.

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Development and testing of the torque control for the permanent-magnet synchronous motor

Cited by 16 publications

References 1 publication

Improve torque response using the inverter overmodulation range in position sensorless control system of PMSM

Improve torque response using the inverter overmodulation range in position sensorless control system of PMSM

Square-wave operation of direct torque controlled PMSM drive system

Current control method with control inputs in polar coordinates for SPMSM based on linearized model

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