Programmed PWM techniques to eliminate harmonics-a critical evaluation

Enjeti, P.N.; Ziogas, P.D.; Lindsay, J.F.

doi:10.1109/ias.1988.25095

Cited by 124 publications

(128 citation statements)

References 6 publications

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“…The cascaded multilevel inverter consists of a series of H-bridge inverter units [1]- [3]. Multilevel inverters also have several advantages with respect to hard-switched two-level pulse width-modulation (PWM) [4],adjustable-speed drives (ASDs). Motor damage and failure have been reported by industry as a result of some ASD inverters' high-voltage change rates (dv/dt), which produced a common-mode voltage across the motor windings.…”

Section: Introductionmentioning

confidence: 99%

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A Heuristic Method: Differential Evolution for Harmonic Reduction in Multilevel Inverter System

Jamuna¹,

Rajan²

2013

IJCEE

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Abstract-In this paper, Differential Evolution (DE)optimization technique is applied to determine optimum switching angles for cascaded multilevel inverter topology with non equal dc sources for eliminating pre specified order of harmonics while maintaining the required fundamental voltage. This paper discusses briefly an efficient Differential Evolution algorithm (DE) that reduces significantly the computational burden resulting in fast convergence. An objective function describing a measure of effectiveness of eliminating selected order of harmonics while controlling the fundamental component is derived. This technique can be applied for any number of levels; as an example in this paper 7-level inverter with different modulation indices and switching angles are reported. Then, these angles are used in simulation to validate the results.Index Terms-RF MEMS, shunt switch, dc and rf characteristics, pull-in voltage, insertion loss, isolation, spring constant, young's modulus, poisson's ratio.

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Section: Introductionmentioning

confidence: 99%

“…Fig. 3 have to be selected so that certain order harmonics are eliminated [4], [6], [8]. The multilevel inverter used is Asymmetrical with binary configuration where levels are identified using,…”

Section: Introductionmentioning

confidence: 99%

A Heuristic Method: Differential Evolution for Harmonic Reduction in Multilevel Inverter System

Jamuna¹,

Rajan²

2013

IJCEE

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“…Moreover, setting up an appropriate cooling method is a particularly serious issue, increasing in intricacy with machine size. Among various approaches for achieving optimal PWM, harmonic elimination method is predominant ( (Mohan et al, 1995), (Enjeti et al, 1990), (Sun et al, 1996), (Chiasson et al, 2004), (Czarkowski et al, 2002), (Sayyah et al, 2006c)). Since copper losses are fundamentally determined by current harmonics, defining a performance index related to undesirable effects of the harmonics is of the essence in lieu of focusing on specific harmonics (Bose, 2002).…”

Section: Introductionmentioning

confidence: 99%

Application of optimal PWM of induction motor in synchronous machines at high power ratings

Sayyah¹,

Aflaki²,

Rezazade³

2007

2007 IEEE/ASME International Conference on Advanced Intelligent Mechatronics

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“…The widely-used methods to control the output voltage of multilevel inverters include various multilevel sinusoidal PWM and space-vector PWM [8] - [9], but they increase control complexity and switching frequency. Another technique is called selective harmonic elimination (SHE) or programmed PWM [10].…”

mentioning

confidence: 99%

Application of Genetic Algorithm to Minimize Harmonic in Multilevel Inverter

Budiman

Windarko

Kuswadi

2016

JNTE

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Abstrak-Dalam desain inverter, harmonisa tegangan merupakan permasalahan utama yang mempengaruhi performa inverter. Pada umumnya, kompleksitas permasalahan minimisasi harmonisa dipengaruhi oleh jumlah orde harmonisa yang akan diminimisasi. Paper ini membahas utilisasi algoritman genetika untuk menyelesaikan persoalan minimisasi harmonisa di inverter multilevel. Tujuannya adalah untuk menemukan hubungan antara jumlah orde harmonisa yang diminimisasi dan total harmonic distortion (THD) yang dihasilkan. Inverter yang diinvestigasi adalah inverter 11-level, akan tetapi studi ini bisa diaplikasikan ke inverter multilevel dengan jumlah level yang lain. Hasil studi menunjukkan bahwa harmonisa di tegangan keluaran inverter memiliki keterkaitan yang kecil terhadap jumlah orde harmonisa yang diminimisasi. Akan tetapi, hasil yang paling bagus tetap masih didapatkan ketika jumlah harmonisa yang diminimisasi banyak. THD terbaik yang diperoleh, dievaluasi hingga harmonisa ke-19, adalah 2,76%, dimana angka ini cukup kecil dan dapat diterima. Kata Kunci : Harmonisa, algoritma genetika, inverter multilevel dan optimisasiAbstract-In inverter design, harmonic voltage is the main issue which affects the performance of the inverter. Generally, the harmonic minimization problem complexity is influenced by the number of harmonic orders to be minimized. This paper presents the utilization of genetic algorithm (GA) to solve harmonic minimization problem in multilevel inverter. The objective is to find relationship between the number of minimized harmonic orders and the results of total harmonic distortion (THD). The inverter to investigate is 11-level, but it is also applicable to multilevel inverters with any number of levels. The results show that harmonic contained in the output voltage has a small dependence on the number of harmonic orders that are minimized. However, the best results are still satisfied even though involving higher number of harmonics. The best-obtained THD, evaluated until 19 th harmonic, is 2.76%, which is fairly low and thus acceptable.

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Programmed PWM techniques to eliminate harmonics-a critical evaluation

Cited by 124 publications

References 6 publications

A Heuristic Method: Differential Evolution for Harmonic Reduction in Multilevel Inverter System

A Heuristic Method: Differential Evolution for Harmonic Reduction in Multilevel Inverter System

Application of optimal PWM of induction motor in synchronous machines at high power ratings

Application of Genetic Algorithm to Minimize Harmonic in Multilevel Inverter

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