Comparison of different types of SPWM techniques for three phase seven level cascaded H-Bridge inverter

Udakhe, Pratik; Atkar, Dipesh; Sateesh, Chiriki; Borghate, Vijay B.

doi:10.1109/icpeices.2016.7853286

Cited by 14 publications

(5 citation statements)

References 15 publications

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“…Random mismatch is caused by the irrational factors of the process, which leads to the change of transistor parameters and cannot be avoided. The mismatch of threshold voltage V th in random mismatch has a great influence on circuit performance and current detection accuracy [17,18]. The circuit based on sense FET proposed in this paper has a large width-to-length ratio between the sensing transistor and power transistor, and the mismatch of the devices is obvious, which will reduce the accuracy.…”

Section: Dem Mismatch Reduction Circuitmentioning

confidence: 99%

“…The modulation method used in the three-phase BLDC motor drive system in this paper is sinusoidal pulse width modulation (SPWM). According to the impulse equivalent principle, the PWM waveform equivalent to the sinusoidal signal can be generated by comparing the isosceles triangular carrier wave with the sinusoidal modulation wave [16][17][18]. The SPWM signal controls the conduction and shutdown of each power transistor in the three-phase inverter bridge circuit to output the desired voltage waveform.…”

Section: Bldc Motor System Structure and Spwm Modulation Modementioning

confidence: 99%

See 1 more Smart Citation

An On-chip Integrated Current Sensing Technology for Real-time Detection of Phase Current in BLDC Motors

Wen,

Wang

2023

PIER M

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This paper presents an on-chip integrated sensing circuit for real-time detection of phase currents in three-phase brushless direct current (BLDC) motors. The three-phase sinusoidal currents generated in the motor winding are detected by an innovative Sense FET technology, which can accurately measure the currents of high side and low side power transistors simultaneously. A dynamic matching elimination method is proposed for the detection current mismatch problem due to the large difference in aspect ratio. Using a 90 nm BCD process for design and verification, the detection circuit of the high side and low side can well follow the change of sine wave phase current of the three-phase motor. The detection accuracy is above 96%, and the best accuracy can reach 99.219%. The elimination effect of circuit current mismatch is obvious, and the error of the sensing current can be reduced by 38.9%.

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Section: Dem Mismatch Reduction Circuitmentioning

confidence: 99%

Section: Bldc Motor System Structure and Spwm Modulation Modementioning

confidence: 99%

An On-chip Integrated Current Sensing Technology for Real-time Detection of Phase Current in BLDC Motors

Wen,

Wang

2023

PIER M

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“…Carrier waveforms above the reference are in phase in the phase opposition disposition technique, whereas those below zero are 180 degrees out of phase. CHB-MLI needed six carrier waveforms for seven levels, which are comparable to the modulating sinusoidal signal of 50 Hz waveform [25]. The positive and negative polarity of pulses is created, and these pulses form the switching sequence of the inverter to get the required output voltage.…”

Section: Phase Opposition Disposition Techniquementioning

confidence: 99%

A 7-level inverter with less number of switches for grid-tied PV applications

BhanuTej¹,

Naidu²

2021

IJATEE

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In the current context, Medium Voltage High Power (MVHP) applications are developing industrial technologies. The direct connection of a Photovoltaic (PV) system to an MVHP system may cause various connectivity challenges. To address the interconnection difficulties, this paper describes a 7-Level Cascaded H-Bridge Multilevel Inverter (CHB-MLI) architecture with fewer switches and lower harmonics. This article proposes the Reduced Switch Multilevel Inverter (RSMLI). This design is less expensive than traditional Multilevel Inverter (MLI) topologies, and it is ideally suited for medium voltage and high-power applications since it synthesizes numerous Direct Current (DC) sources. The innovative 7-Level inverter is represented with a decreased number of switches using the Phase Opposition Disposition (POD)methodology. The lower switch count helps the construction of simple converter structures. To boost performance, the MATLAB/Simulink results are evaluated.

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“…An important factor in assessing the performance of the PWM is the total distortion factor of the output voltage harmonics (THD), defined by the ratio of the quadratic sum of the voltage harmonics to the fundamental value of the voltage [8]. (13)…”

Section: Total Distortion Of Thd Voltage Harmonicsmentioning

confidence: 99%

Harmonic elimination by SPWM and THIPWM techniques applied in photovoltaic inverters

Fatima¹,

Nourddine

2021

IJAPE

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With advances in solid-state power electronic devices, control techniques (PWM) have been devised to obtain high dynamics responses from a multilevel power conditioning converter-Photovoltaic. This work discusses the advantages and drawbacks of two different PWM techniques, the sinusoidal (SPWM) technique and the Third harmonic injection PWM (THIPWM) technique. These two methods are compared by discussing their ease of implementation and by analyzing the output harmonic spectra of various output voltage and their total harmonic distortion (THD). The focus of this paper is the simulation study of single-phase inverter, three phases, two levels and three levels inverter for application photovoltaic. Firstly, single phase is modeled with inductive load and their waveforms are observed. Secondly, a two levels inverter, and three levels inverter are leading to the high industrial performances of the drives synchronous, especially, if a high-power quality is requested.

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Comparison of different types of SPWM techniques for three phase seven level cascaded H-Bridge inverter

Cited by 14 publications

References 15 publications

An On-chip Integrated Current Sensing Technology for Real-time Detection of Phase Current in BLDC Motors

An On-chip Integrated Current Sensing Technology for Real-time Detection of Phase Current in BLDC Motors

A 7-level inverter with less number of switches for grid-tied PV applications

Harmonic elimination by SPWM and THIPWM techniques applied in photovoltaic inverters

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