Low cost, high accuracy real-time simulation used for rapid prototyping and testing control algorithms on example of BLDC motor

Baszyński, M.

doi:10.1515/aee-2016-0034

Cited by 7 publications

(2 citation statements)

References 24 publications

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“…22. The proposed controllers are implemented using the very high speed integrated circuit (VHSIC) hardware description language (VHDL) [21]. The functional simulation study of the architecture is performed using the tool ModelSim 6.3.…”

Section: Experimental Corroborationmentioning

confidence: 99%

Positive output elementary Luo converter for fixed-frequency ZVS operation

Bright¹,

Ramkumar²,

Anand³

2017

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. Luo converter is one amid the developed DC-DC converters offering higher voltage gain. Soft-switching techniques, like zero-voltage switching (ZVS), repress switching losses, and hence the system efficiency and the life of the power semiconductor switches are improved. Incorporation of soft switching in fixed-frequency operation of the Luo converters may persuade them in the regulated power supply applications. The existing variable switching frequency solution suffers from a number of problems viz. complexity in filter designing, more electromagnetic interference (EMI), etc. This paper proposes a positive output elementary Luo converter (POELC) involving ZVS with the wherewithal of working in fixed frequency. A comprehensive discussion on the proposed circuit topology is detailed with both simulation and experimental studies. Systematic descriptions of basic POELC, variable-frequency ZVS-POELC, and fixed-frequency ZVS-POELC make an impact on the understanding of related concepts by the researchers in this field. At high switching frequencies, these hard-switched converters suffer from high switching stress, high switching power losses, reduced reliability and electromagnetic interference (EMI) [5]. To overcome these difficulties, soft-switching techniques like zero-voltage switching (ZVS) have been introduced in LCs [6][7][8]. The ZVS technique expunges the large capacitance of the main switch through resonant switching, which minimizes the losses, as well as reduces the ringing in waveforms [9]. The soft-switching technique in LC has helped in escalating the switching frequency, hence casting a compact converter of a higher power density than that of the PWM converters [3]. ZVS was easier in high-current applications, and a reasonably low EMI has been observed [3]. Even though the frequency of switching is reasonably increased, the voltage stress across the main switch is also increased. In ZVS, the voltage across the main switch can reach eleven times the input voltage [9]. The voltage regulation in ZVS-LC is more liberally achieved by variable frequency operation [6]. The variable frequency operation results in high voltage stress on switches (hence the minimal reliability of power switches) and complexity of filter design. This paper proposes a modified topology to support the fixed-frequency ZVS in overcoming the abovementioned issues of the positive output elementary Luo converter (POELC). The main idea of the modified topology is adding an auxiliary switch across the resonant inductance, which delays the immediate resonant cycle until its turned OFF. Using variable pulse

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Section: Experimental Corroborationmentioning

confidence: 99%

Positive output elementary Luo converter for fixed-frequency ZVS operation

Bright¹,

Ramkumar²,

Anand³

2017

Bulletin of the Polish Academy of Sciences Technical Sciences

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“…There are also other academic FPGA-based solutions dedicated to high speed real-time simulations utilized mainly for power electronics applications [5,6]. The popularization of real-time digital simulations over the years has resulted in their various applications in the design and testing of power system protection algorithms [7][8][9][10][11][12][13][14][15] and in the other research areas [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Bulletin of the Polish Academy of Sciences: Technical Sciences

Krakowski¹,

Nogal²

2020

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The complexity of power system phenomena challenges power system protection testing to obtain the required adequacy of the testing environment. Hardware-in-the-loop simulation in real-time substantially increases testing capabilities. However, there is still the question of the availability of commercial solutions. To address the challenges, a new hardware-in-the loop system has been designed and implemented utilizing the easily available Matlab/Simulink environment and Linux RT Preempt OS. The custom software part prepared for the presented system is based on the Matlab/Simulink s-function mechanism, Embedded Coder toolbox and Advantech biodaq library as the interface for the utilized I/O cards. The simulator's real-time performance limits on Linux RT Preempt have been verified, and it was shown that its performance is sufficient to conduct successful tests of protection relays. Consequently, a simple power system protection relay testing example is provided, including a discussion of results. Finally, it has been proven that the presented system can be utilized as a simpler and more accessible hardware-in-the-loop testing alternative to commercial simulators.

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Improved Sensor Control Method for BLDC Motors

Kolano

2019

IEEE Access

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The article proposes the replacement of the classic control method of systems with BLDC motor sensors to a system where the inverter switching points are determined by means of a switching estimation algorithm. The switching points are calculated by a microcontroller in accordance with the Hall sensors' switching signals, but can be tuned using an external optimization algorithm. This method of controlling a BLDC motor allows us to use a correction algorithm that significantly improves the commutation of BLDC drives with unbalanced Hall sensors. Both the computation of the sensor's misalignment and the proposed method of correction were developed by the author to improve the functionality of drive systems with BLDC motors with closed-loop speed control. The use of this technique yielded very good results in both static and dynamic states. In addition, it made it possible to precisely influence the motor's commutation angle, which can minimise the production costs of such machines by foregoing the need to provide mechanical elements to move the sensors relative to the rotor axis. The article presents the results of work carried out on a laboratory bench built for this purpose.

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Low cost, high accuracy real-time simulation used for rapid prototyping and testing control algorithms on example of BLDC motor

Cited by 7 publications

References 24 publications

Positive output elementary Luo converter for fixed-frequency ZVS operation

Positive output elementary Luo converter for fixed-frequency ZVS operation

Bulletin of the Polish Academy of Sciences: Technical Sciences

Improved Sensor Control Method for BLDC Motors

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