Selective Harmonic Mitigation Technique for High-Power Converters

Nápoles, J.; Leon, Jose I.; Portillo, R.; Franquelo, Leopoldo G.; Aguirre, M.A.

doi:10.1109/tie.2009.2026759

Cited by 210 publications

(95 citation statements)

References 27 publications

(27 reference statements)

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“…In this paper, four power quality standards (EN 50160 [4], CIGRE WG 36-05 [5], IEC 61000-3-6 [6], and IEC 61000-2-12 [7]) are considered for the proposed SHM-PWM method. The selected grid codes in this paper are more intransigent than those in previous works [12], [17], [23], [24]. Moreover, IEC 61000-3-6 and IEC 61000-2-12 are known as international power quality standards.…”

Section: ) Selective Harmonic Elimination-pwm (She-pwm) 2) Selectivmentioning

confidence: 95%

“…Recently, a new optimal modulation technique (SHM-PWM) has been introduced which tries to mitigate low order harmonics, instead of complete elimination of low order harmonics, from the output waveform [23], [24]. In this method, a higher number of harmonics can be considered compared to the SHE-PWM method.…”

Section: ) Selective Harmonic Elimination-pwm (She-pwm) 2) Selectivmentioning

confidence: 99%

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Non-equal DC link Voltages in a Cascaded H-Bridge with a Selective Harmonic Mitigation-PWM Technique Based on the Fundamental Switching Frequency

Moeini¹,

Iman‐Eini²,

Najjar³

2017

Journal of Power Electronics

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In this paper, the Selective Harmonic Mitigation-PWM (SHM-PWM) method is used in single-phase and three-phase Cascaded H-Bridge (CHB) inverters in order to fulfill different power quality standards such as EN 50160, CIGRE WG 36-05, IEC 61000-3-6 and IEC 61000-2-12. Non-equal DC link voltages are used to increase the degrees of freedom for the proposed SHM-PWM technique. In addition, it will be shown that the obtained solutions become continuous and without sudden changes. As a result, the look-up tables can be significantly reduced. The proposed three-phase modulation method can mitigate up to the 50th harmonic from the output voltage, while each switch has just one switching in a fundamental period. In other words, the switching frequency of the power switches are limited to 50 Hz, which is the lowest switching frequency that can be achieved in the multilevel converters, when the optimal selective harmonic mitigation method is employed. In single-phase mode, the proposed method can successfully mitigate harmonics up to the 50th, where the switching frequency is 150 Hz. Finally, the validity of the proposed method is verified by simulations and experiments on a 9-level CHB inverter.

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Section: ) Selective Harmonic Elimination-pwm (She-pwm) 2) Selectivmentioning

confidence: 95%

Section: ) Selective Harmonic Elimination-pwm (She-pwm) 2) Selectivmentioning

confidence: 99%

Non-equal DC link Voltages in a Cascaded H-Bridge with a Selective Harmonic Mitigation-PWM Technique Based on the Fundamental Switching Frequency

Moeini¹,

Iman‐Eini²,

Najjar³

2017

Journal of Power Electronics

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show abstract

“…An evolution of SHE is the selective harmonic mitigation (SHM) technique, which is based on preprogrammed waveforms not eliminating the loworder harmonics but reducing the distortion below the limits imposed by a grid code [30], [31].…”

Section: Selective Harmonic Mitigation Techniquementioning

confidence: 99%

Model Predictive Control: A Review of Its Applications in Power Electronics

Vázquez

Leon

Franquelo

et al. 2014

EEE Ind. Electron. Mag.

967

374

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“…This technique can be used to directly shape the spectra of uncontrolled voltage harmonics [17] and, following indirectly, the spectra of DC-link current harmonics [18].…”

Section: Analysis Of Disturbing Effect Of 3 Kv DC Supplied Traction Vmentioning

confidence: 99%

Analysis of disturbing effect of 3 kV DC supplied traction vehicles equipped with two-level and three-level VSI on railway signalling track circuits

Steczek

Szeląg

Chatterjee

2017

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. Electric traction vehicles cooperating with a 3kV DC traction system and equipped with drive systems based on voltage source inverters are the most significant sources of disturbances for a railway signalling system. Every traction vehicle to be authorised for operation on railway lines must fulfil the limits imposed on current harmonics magnitudes and those provided by railway operators. The solution introduced for prototypes of most modern traction drives is to replace the two-level inverters with three-level topology. Therefore, it is essential to establish the influence of the new solution on the railway signalling system. This paper presents a comparative analysis between simulation results delivered for two and three-level traction drive system regarding generation of disturbing current harmonics. Two types of VSI modulation techniques were taken under consideration: sinusoidal PWM (SPWM) and a new one, proposed by the authors, based on selective harmonic elimination (SHE). Furthermore, the authors presented application of one of the SHE based optimization techniques for shaping the EMU's (electric multiple unit) DC side input current harmonics spectrum in order to meet the required limits. The described technique is based on off-line generation of a set of solutions for each of the VSI operating points and selection of the best solution for the assumed criteria. The applied simulation models and the concept of SHE control were verified in a laboratory by means of a low-power drive stand. Using the three-level inverter in traction drives system results in less current harmonics than using two-level topology without modification of the modulation technique. Thus, it does not guarantee fulfilling all limits assumed in this paper. The proposed modulation technique allows for fulfilling the limits, and the technical implementation of the proposed technique in a traction drive system will be considered in future studies. fore, it generates less current and torque harmonics, resulting in lesser power losses and increased life-time of the drive. Another problem is developing a control strategy to make this type of inverters suitable for operation in traction and industrial environment. The application of a direct torque control (DTC) strategy for this purpose was presented in [6].The preferred topology of the three-level inverter for traction application seems to be the neutral point clamped NPC topology (Fig. 3b). This solution requires an additional modification of modulation to eliminate the neutral point voltage fluctuations [5,7,8].

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Selective Harmonic Mitigation Technique for High-Power Converters

Cited by 210 publications

References 27 publications

Non-equal DC link Voltages in a Cascaded H-Bridge with a Selective Harmonic Mitigation-PWM Technique Based on the Fundamental Switching Frequency

Non-equal DC link Voltages in a Cascaded H-Bridge with a Selective Harmonic Mitigation-PWM Technique Based on the Fundamental Switching Frequency

Model Predictive Control: A Review of Its Applications in Power Electronics

Analysis of disturbing effect of 3 kV DC supplied traction vehicles equipped with two-level and three-level VSI on railway signalling track circuits

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