A state-space approach for control of NPC type 3-level sine wave inverter used in FOC PMSM drive

Tarczewski, Tomasz; Grzesiak, Lech M.; Wawrzak, A.; Karwowski, Krzysztof; Erwiński, Krystian

doi:10.2478/bpasts-2014-0046

Cited by 9 publications

(6 citation statements)

References 20 publications

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“…The main comparison of the proposed control system and the MFC is described in the next section. The other structures, MRAS (Model Reference Adaptive System) [20] and MRAC (Model Reference Adaptive Control) [21], and the IMC (Internal Model Control) [22,23] are used mainly in order to estimate the unknown component of the state vector.…”

Section: Reference Based Control Structuresmentioning

confidence: 99%

A new sensorless speed control structure for PMSM using reference model

Urbański¹

2017

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. In the paper a new sensorless control structure for the PMSM drive is presented. Such a structure is especially recommended for speed in the range of single revolutions per second (excluding standstill). The method uses a back EMF observer for position estimation. However, there is no need to estimate the speed. This is a big advantage because of possible irregularity of estimated back EMF in this speed range, which makes the calculation of speed difficult or impossible. The proposed structure is similar to the model following control, but the reference model attempts to track the motor operating point. The main idea is to utilize as a reference a model of the whole drive, including speed and current controllers and motor model. Such a model produces reference voltage for the real inverter. However, an extra unit -called rotator -is needed to provide precise control of direct axis current, which is sensitive to the improper position of the voltage vector. The rotator acts as a kind of compensator for error of position estimation. range. This is confirmed by experimentally obtained waveforms shown in Fig. 1 and Fig. 2. This is the idle speed, using a constant value of reference current on q axis. These waveforms were obtained for a traditional field oriented control (FOC) method of the PMSM (using a similar structure as is shown in Fig. 4), with a cascade control structure using a closed speed control loop (which was disconnected for the test) with inner current control loops containing separate controllers on d and q axes, rotating synchronously with the rotor. The overall structure of control utilizes the sine and cosine of the estimated position and calculated speed value instead of measured values.To obtain smooth output values from the observer, the reference voltage is used instead of measured ones. This simplification gives good results

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Section: Reference Based Control Structuresmentioning

confidence: 99%

A new sensorless speed control structure for PMSM using reference model

Urbański¹

2017

Bulletin of the Polish Academy of Sciences Technical Sciences

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“…Then (17), (18) can be substituted into (16), and unknown coefficients K 1−4 can be calculated off-line to meet given restrictions, e.g. to have equal stator currents amplitudes.…”

Section: Fault-tolerancementioning

confidence: 99%

“…Not all of them have found wide industrial applications. Although the state space based approach is very promising method [16], the most popular strategy used commercially is Field Oriented Control (FOC). Finally, in this paper a post-fault FOC with hysteresis current controllers is presented and verified by simulation during transient postfault states.…”

Section: Introductionmentioning

confidence: 99%

Modelling and fault-tolerant control of 5-phase induction machine

Rolak

Seng

Malinowski

2015

Bulletin of the Polish Academy of Sciences Technical Sciences

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“…Optimal motor control performance is achieved by improving the control strategy of the PMSM control system. Currently, the traditional double-layer nested proportional-integral (PI) loop structure with FOC is widely used in which the double loop separately controls the speed and current [4,5]. The methods to improve PI control proposed by scholars include fuzzy control [6], sliding mode control [7], robust control [8], and model predictive control [9].…”

Section: Introductionmentioning

confidence: 99%

Design of Permanent Magnet Synchronous Wind Power Control System

Ran,

Wei,

Gao

2024

PIER C

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To tackle the slow response and insufficient interference resistance exhibited by permanent magnet synchronous motors (PMSMs) under traditional field-oriented control (FOC). This paper proposes an integral sliding mode controller (SMC) to improve the speed loop, and adaptive law is also developed using a nonlinear smooth function to eliminate the chattering phenomenon of the sliding mode control. Meanwhile, an extended state observer is designed to estimate and compensate for the disturbances caused by wind speed uncertainty and system's internal disturbances. Then, model predictive control (MPC) is employed for the current loop to eliminate the overshoot and achieve fast tracking. Finally, a step-by-step model reference adaptive scheme (MRAS) is proposed to identify the parameters and eliminate the internal disturbances in addressing parameter perturbation in the motor during operation. The simulation results demonstrate that the enhanced system exhibits almost no overshoot, superior steady-state performance, quick dynamic response, and resistance to both internal and external disturbances, ultimately validating the efficacy of the approach.

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A state-space approach for control of NPC type 3-level sine wave inverter used in FOC PMSM drive

Cited by 9 publications

References 20 publications

A new sensorless speed control structure for PMSM using reference model

A new sensorless speed control structure for PMSM using reference model

Modelling and fault-tolerant control of 5-phase induction machine

Design of Permanent Magnet Synchronous Wind Power Control System

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