Investigation into Harmonic Losses in a PWM Multilevel cascaded H-Bridge Inverter Fed Induction Motor

Hothongkham, Prasopchok; Kinnares, Vijit

doi:10.1109/peds.2007.4487832

Cited by 17 publications

(10 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In [15], the iron losses in a ring-core setup were studied with multilevel PWM supply-voltage waveforms. In each study [13]- [15], the core losses were found to be significantly reduced when more voltage levels were used.…”

mentioning

confidence: 95%

“…It is shown that both the iron losses and their dependence on the switching frequency are significantly reduced with increasing number of voltage levels. Finally, to validate the observations of [13]- [15] in a higher-power range, 150-kVA and 12.5-MW wound-field synchronous machines (see Table I and Fig. 1) are simulated with the finite-element (FE) method with two-, three-, and five-level inverter supplies and relatively low switching frequencies.…”

mentioning

confidence: 98%

“…However, it seems that the studies on multilevel inverter supplied machines have so far mostly focused on the torque ripple [10], [11], and the power losses have received only a little attention. Indeed, compared to the huge amount of experimental and theoretical power-loss studies in electrical machines supplied from traditional two-level inverters [12], it is surprising that only [13]- [15] were found to really investigate the effects of multilevel inverters on losses in magnetic cores. In [13], the harmonic losses in a cascaded H-bridge inverter supplied 3-hp (2.2-kW) induction machine were studied.…”

mentioning

confidence: 99%

“…Indeed, compared to the huge amount of experimental and theoretical power-loss studies in electrical machines supplied from traditional two-level inverters [12], it is surprising that only [13]- [15] were found to really investigate the effects of multilevel inverters on losses in magnetic cores. In [13], the harmonic losses in a cascaded H-bridge inverter supplied 3-hp (2.2-kW) induction machine were studied. A simple experimental formula for the harmonic losses was compared to no-load measurement results with both two-and seven-level pulse-width modulated (PWM) voltage waveforms.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Effect of Multilevel Inverter Supply on Core Losses in Magnetic Materials and Electrical Machines

Rasilo

Salem

Abdallh

et al. 2015

IEEE Trans. Energy Convers.

View full text Add to dashboard Cite

Abstract-The effect of multilevel inverter supply on power losses in magnetic cores and electrical machines is studied. A dynamic numerical model for the hysteresis, eddy current, and excess losses in a core lamination is first developed. By both measurements and simulations for a ring-core inductor, we demonstrate how increasing the number of inverter voltage levels decreases the iron losses when compared with traditional two-level supply. Although the switching frequency has a significant impact on the iron losses in the case of a traditional two-level inverter, using three or five voltage levels makes the losses almost independent of the switching. Finally, finite-element simulations show that similar reductions are also possible for the core losses of 150-kVA and 12.5-MW wound-field synchronous machines, in which rather low switching frequencies are typically used. Calorimetric loss measurements are also presented for the 150-kVA machine in order to confirm the significant effect of switching frequency on the core losses with two-level inverter supply.

show abstract

mentioning

confidence: 95%

mentioning

confidence: 98%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Effect of Multilevel Inverter Supply on Core Losses in Magnetic Materials and Electrical Machines

Rasilo

Salem

Abdallh

et al. 2015

IEEE Trans. Energy Convers.

View full text Add to dashboard Cite

show abstract

“…Although this loss may not attribute very much to the efficiency of the motor, it will result in a temperature-rise inside the magnets. In addition, the output voltage of pulse-width-modulated (PWM) inverter that is used to drive the PM motors contains abundant high frequency harmonics [3][4][5][6], which induce excessive losses in the motor. Hence, excessive temperature-rise can exist in PM motors, expecially when PMSM operate in high speed or high torque in HEV.…”

Section: Introductionmentioning

confidence: 99%

Online temperature estimation of IPMSM permanent magnets in hybrid electric vehicles

Ding

Liu

2011

2011 6th IEEE Conference on Industrial Electronics and Applications

View full text Add to dashboard Cite

The temperature-rise inside the magnets of interior permanent magnet synchronous motors (IPMSM) in a hybrid electric vehicle (HEV) caused by losses can lead to potential irreversible demagnetization. This paper presents an analytical model of online temperature prediction. Based on the relationship of the temperature and the magnets performance, the temperature of magnets is predicted through solving the equation of voltage, current, rotate speed and winding temperature in the model. The predicted temperatures of the model is validated by experiments when the motors operated by three phase sine supply. And the temperature rises observably under PWM inverter supply. Furthermore, the finite element analysis (FEA) simulation results give more confidence for the proposed estimators. Keywords-permanent magnet synchronous motors (IPMSM), hybrid electric vehicle (HEV), irreversible demagnetization, PWM

show abstract

Three‐phase hybrid multilevel inverter with less power electronic components using space vector modulation

Hasan

Mekhilef

Ahmed

2014

IET Power Electronics

View full text Add to dashboard Cite

This study presents a new design and implementation of a three-phase hybrid multilevel inverter (MLI) using space vector modulation. The proposed MLI consists of a reduced number of dc sources and switches to minimise the control complexity. The developed topology consists of two stages: main stage and auxiliary stage. The main stage is a conventional three-phase inverter with one high-voltage input dc source and six switches. The auxiliary stages contain three individual cells. Each cell consists of two switches and one low-voltage input dc source. This topology is a modular type and without changing the previous connection it can be extended for more number of output voltage levels by adding certain number of auxiliary stages. A space vector modulation control technique has been utilised in order to generate different switching sequences. The special feature of the proposed system is its capability to maximise the number of voltage levels using a reduced number of isolated dc voltage sources and electronic switches. A prototype has been developed and tested for various modulation indexes to verify the control technique and performance of the topology. Experimental results validate the simulation results and the experimental results show a good similarity with the simulation results.

show abstract

Investigation into Harmonic Losses in a PWM Multilevel cascaded H-Bridge Inverter Fed Induction Motor

Cited by 17 publications

References 4 publications

Effect of Multilevel Inverter Supply on Core Losses in Magnetic Materials and Electrical Machines

Effect of Multilevel Inverter Supply on Core Losses in Magnetic Materials and Electrical Machines

Online temperature estimation of IPMSM permanent magnets in hybrid electric vehicles

Three‐phase hybrid multilevel inverter with less power electronic components using space vector modulation

Contact Info

Product

Resources

About