An Approach to Solving Ramp Start Issues in Sensorless Field Oriented Control with Sliding Mode Observer for Permanent Magnet Synchronous Motors

Rachev, Emil; Petrov, Vladislav

doi:10.1109/elma.2019.8771555

Cited by 6 publications

(2 citation statements)

References 3 publications

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“…The commanded speed typically increases linearly from zero level to the set value at which the sensorless estimator operates stably, then the system is closed using speed feedback from estimator. This basic idea was considered in detail in [22][23][24][25][26], and ref. [22] reported significant rotor oscillations in the open loop, which may be a reason for loss of synchronism.…”

Section: Speed Open-loopmentioning

confidence: 99%

Instant Closing of Permanent Magnet Synchronous Motor Control Systems at Open-Loop Start

Dianov¹

2022

Sustainability

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Nowadays, position sensorless permanent magnet synchronous motor drives are gaining popularity quite rapidly, and have become almost standard in many applications such as compressors, high speed pumps, etc. All of these drives involve estimators to calculate the speed and the position of the rotor, which are necessary for proper operation of vector control. While these estimators, with the exception of injection-based ones, work well in the middle and high-speed ranges, they cannot operate at low speeds. In order to overcome this problem, sensorless control systems include different starting techniques, with the most popular being open-loop starting. In this approach, the motor is accelerated in open-loop mode until it reaches the speed where estimator operates stably, then the control system is closed. However, the weakest point of this method is the technology of closing the system, which typically creates transients and can even be the cause of loss of stability. This paper proposes a method for instant and seamless transition from open-loop to closed loop which works perfectly under different load conditions. Other starting techniques are considered and compared with the proposed method.

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Section: Speed Open-loopmentioning

confidence: 99%

Instant Closing of Permanent Magnet Synchronous Motor Control Systems at Open-Loop Start

Dianov¹

2022

Sustainability

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“…Experimental results show that the proposed method is effective. Reference [26] proposed an open-loop control based on zero low speed to overcome the stability problem during slope startup.…”

Section: Introductionmentioning

confidence: 99%

Application of a new type of super twist sliding mode control in flywheel energy storage

Liu

Wang

ZHOU

et al. 2023

IEICE Electron. Express

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Aiming at the error problem in estimating the speed of a permanent magnet synchronous motor(PMSM) using a sliding mode observer in a flywheel energy storage system, a super twist sliding mode observer(SMO) is used to replace the traditional sliding mode observer. A new saturation function is designed to replace the sign function. In addition, a constant sliding mode gain may lead to a decrease in observation accuracy during speed switching. An adaptive sliding mode gain is proposed to reduce chattering, The accurate estimation of the comprehensive speed range observer is enhanced, and the stability of the proposed observer is proved. On this basis, a super twist sliding mode speed controller is designed to replace the traditional PI controller to improve the observation performance of the system. The flywheel energy storage system's simulation model is built, and the flywheel energy storage system's constant speed standby and charging conditions are simulated. The simulation results verify the correctness and effectiveness of the improved super twist sliding mode observer in the flywheel motor.

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Instant and seamless closing of control system of IPMSM after open-loop starting

Dianov

2021

2021 XVIII International Scientific Technical Conference Alternating Current Electric Drives (ACED)

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An Approach to Solving Ramp Start Issues in Sensorless Field Oriented Control with Sliding Mode Observer for Permanent Magnet Synchronous Motors

Cited by 6 publications

References 3 publications

Instant Closing of Permanent Magnet Synchronous Motor Control Systems at Open-Loop Start

Instant Closing of Permanent Magnet Synchronous Motor Control Systems at Open-Loop Start

Application of a new type of super twist sliding mode control in flywheel energy storage

Instant and seamless closing of control system of IPMSM after open-loop starting

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