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

Dianov, Anton

doi:10.1109/aced50605.2021.9462266

Cited by 7 publications

(2 citation statements)

References 34 publications

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“…Speed and position are obtained from the calculator, which inputs the predefined initial position θ init and acceleration ε. The open-loop speed is compared with the predefined closing value ω cl , which defines the moment of closing and the activation of the transition algorithm [41]. This closing speed ω cl has to be defined through a series of experiments under different load conditions and deviation of motor parameters at the maximum value of production error.…”

Section: Proposed Methodsmentioning

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: Proposed Methodsmentioning

confidence: 99%

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

Dianov¹

2022

Sustainability

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“…Precise estimation of the stator resistance improves the performance of noninjective position and speed estimators, especially in lowspeed regions, where back-EMF is insignificant [10]. In turn, it makes short open-loop starting and fast closing of the control system possible, thus increasing the drive efficiency [11,12].…”

Section: Introductionmentioning

confidence: 99%

Offline Measurement of Stator Resistance and Inverter Voltage Drop Using Least Squares

Dianov¹,

Anuchin

2023

IEEE Access

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Modern industrial and commercial electrical drives are typically designed to control motors of different types, operating under scalar, field-oriented or direct torque control. These drives execute various algorithm such as sensorless control, temperature monitoring, etc., which require the knowledge of motor drive parameters. In order to do this, the inverters allow data to be input manually or execute selfcommissioning routines before running the motor. The parameters necessary for proper operation include motor phase resistance and inverter voltage drop, which are especially important in low-speed range. This paper presents an offline technique for estimation of mentioned parameters, which can be obtained with enough precision for the overwhelming majority of applications. The proposed algorithm consequently injects DC-current of several levels into the stator of a motor, measuring the corresponding voltages. Each pair of current and voltage is a point in the voltage current characteristic of motor drive, thus set of these points maybe approximated with a first order polynomial using least squares method. The parameters of polynomial are desired inverter voltage drop and phase resistance. The experimental section analyzes estimation errors and their dependence on the number of injected levels, their values and filtering capability of measuring algorithm. After that, the authors give suggestions on algorithm parameters selection, depending on the demanded precision. Finally, the authors demonstrate a mass-producing dishwasher motor drive, which adopted this technique.

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Optimized Field-Weakening Strategy for Control of PM Synchronous Motors

Dianov¹

2022

2022 29th International Workshop on Electric Drives: Advances in Power Electronics for Electric Drives (IWED)

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

Cited by 7 publications

References 34 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

Offline Measurement of Stator Resistance and Inverter Voltage Drop Using Least Squares

Optimized Field-Weakening Strategy for Control of PM Synchronous Motors

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