Real-Time Simulation of Power Conversion in Doubly Fed Induction Machine

Kłosowski, Zbigniew; Cieślik, S.

doi:10.3390/en13030673

Cited by 10 publications

(25 citation statements)

References 24 publications

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“…Another problem is choosing a method for the development of a real-time model that would provide calculation performance and numerical stability over a long period of continuous model functioning. This issue has been noted previously, specifically in [11,12,22].…”

Section: Introductionsupporting

confidence: 55%

“…The use of a real-time simulator of a power grid with a wind power plant for an operation-mode analysis and control-system synthesis is described in [11]. A realtime simulator of a doubly fed induction machine that can be used for control-system synthesis and testing is presented in [12]. A real-time model of a DTC electric drive for a locomotion module is described in [13] and proposed for use in hybrid systems, combining the computer models of the AC e-motor and the physical e-motors of several locomotion modules.…”

Section: Introductionmentioning

confidence: 99%

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Diagnosis of the Static Excitation Systems of Synchronous Generators with the Use of Hardware-In-the-Loop Technologies

et al. 2021

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In this paper, testing and diagnosis methods for the static excitation systems of power plant synchronous generators using Hardware-In-the-Loop technology are described. These methods allow a physical excitation system to be connected to a real-time model of a power plant unit. A feature of a static excitation system is the presence of generator self-excitation—that is, when the input voltages of the excitation system are defined by a synchronous generator. These voltages are determining by the digital model, which creates additional difficulties with combining a digital model with a real excitation system. Various ways to solve this problem are described in this article; in particular, we focus on the option in which the gate-impulses of a thyristor converter are applied to the digital model by a real static excitation system. The real-time models are based on the method of average voltages in the integration step. This method is effective for providing numerical stability for the models of power schemes and their functioning in real time mode over a long period. A synchronization method for the calculation time of the model with real time is described. The adequacy of the described method is proved by the results of the static excitation system of synchronous generators testing in operating and fault modes.

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Section: Introductionsupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Diagnosis of the Static Excitation Systems of Synchronous Generators with the Use of Hardware-In-the-Loop Technologies

et al. 2021

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“…Hence, it is necessary to develop the description of the generator, that operates into an isolated load, represented as a take-off load, taking into account the fact that it is a new type of generator [27][28][29][30][31][32][33][34][35].…”

Section: Mathematical Descriptionmentioning

confidence: 99%

Modified Permanent Magnet Synchronous Generators for Using in Energy Supply System for Autonomous Consumer

2021

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In this paper, the possibility of using synchronous generators with magnetoelectric excitation for the autonomous consumers’ supply with the use of renewable energy sources is considered. To eliminate a number of the disadvantages associated with the difficulty of energy-efficient regulation of the generated parameters, such as the generated current and voltage, the use of modified multi-winding synchronous generators with permanent magnets is proposed. It allows solving the problem of controlling this type of generator. In addition, the use of this type of generator helps to increase the amount of energy generated. The authors have proposed several synchronous generators with permanent magnets of various supply network architectures: single-phase, two-phase and traditional three-phase types. This will simplify the design of architecture for several cases of consumer power supply systems. It will also help to eliminate the need to organize a balanced distribution of loads in phases to prevent accidents, damage and/or disabling of consumers themselves. Here, we considered mathematical descriptions of several types of generators that differ in their assembling, in particular, the number of phases (one-, two- and three-phase generators), the number of pairs of permanent magnet poles on the rotor, and the method of switching the generator windings among themselves. Using the developed mathematical descriptions that describe the operation of every single winding of the generator, their mathematical models were developed in the SimInTech mathematical modeling environment. The results of the mathematical modeling of these generators were presented; their interpretation for use with renewable energy sources was made; and the methods of using these generators were described. The developed mathematical descriptions of synchronous generators with permanent magnets can be used for further study of their operation. It can also help for the development of control systems and power systems for micro-grid energy complexes that use renewable energy sources to increase the energy efficiency of micro-grid systems.

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“…At each time step, the exact matrices were computed as the result of an interpolation between two adjacent matrices of the lookup table by using the angular position measurement. The same type of storage and interpolation was used to retrieve the derivative inductance matrix for torque computation using Equation (6). Now regarding the search coil, since no current, i.e., no state, was associated with it, it was not included in the dynamical system.…”

Section: Cfe-cc Model Implementation For Real-time Executionmentioning

confidence: 99%

“…For electrical machines, the core model is the electromagnetic model, which computes electrical quantities such as currents, voltages and electromagnetic torque. As of now, dq models are used extensively for real-time simulation due to their relative simplicity and small computation time, mainly for hardware-in-the-loop testing purpose [5] and grid simulation [6]. A computationally efficient model is needed because real-time constraints impose that the simulation time step be larger than the computation time it takes in real-world clock [7].…”

Section: Introductionmentioning

confidence: 99%

Real-Time Digital Twin of a Wound Rotor Induction Machine Based on Finite Element Method

2020

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Monitoring and early fault prediction of large electrical machines is important to maintain a sustainable and safe power system. With the ever-increasing computational power of modern processors, real-time simulation based monitoring of electrical machines is becoming a topic of interest. This work describes the development of a real-time digital twin (RTDT) of a wound rotor induction machine (WRIM) using a precomputed finite element model fed with online measurements. It computes accurate outputs in real-time of electromagnetic quantities otherwise difficult to measure such as local magnetic flux, current in bars and torque. In addition, it considers space harmonics, magnetic imbalance and fault conditions. The development process of the RTDT is described thoroughly and outputs are compared in real-time to measurements taken from the actual machine in rotation. Results show that they are accurate with harmonic content respected.

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Real-Time Simulation of Power Conversion in Doubly Fed Induction Machine

Cited by 10 publications

References 24 publications

Diagnosis of the Static Excitation Systems of Synchronous Generators with the Use of Hardware-In-the-Loop Technologies

Diagnosis of the Static Excitation Systems of Synchronous Generators with the Use of Hardware-In-the-Loop Technologies

Modified Permanent Magnet Synchronous Generators for Using in Energy Supply System for Autonomous Consumer

Real-Time Digital Twin of a Wound Rotor Induction Machine Based on Finite Element Method

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