Structure-borne Noise at PWM Excitation Using an Extended Field Reconstruction Method and Modal Decomposition

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LUZNAR, Janez ;SLAVIČ, Janko ;BOLTEŽAR, Miha .
Structure-borne Noise at PWM Excitation Using an Extended Field Reconstruction Method and Modal Decomposition. 
Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 65, n.9, p. 471-481, october 2019. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/article/structure-borne-noise-at-pwm-excitation-using-an-extended-field-reconstruction-method-and-modal-decomposition/>. Date accessed: 17 oct. 2019. 
doi:http://dx.doi.org/10.5545/sv-jme.2019.6115.
Luznar, J., Slavič, J., & Boltežar, M.
(2019).
Structure-borne Noise at PWM Excitation Using an Extended Field Reconstruction Method and Modal Decomposition.
Strojniški vestnik - Journal of Mechanical Engineering, 65(9), 471-481.
doi:http://dx.doi.org/10.5545/sv-jme.2019.6115
@article{sv-jmesv-jme.2019.6115,
	author = {Janez  Luznar and Janko  Slavič and Miha  Boltežar},
	title = {Structure-borne Noise at PWM Excitation Using an Extended Field Reconstruction Method and Modal Decomposition},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {65},
	number = {9},
	year = {2019},
	keywords = {carrier frequency; electromagnetic forces; extended field reconstruction method; modal decomposition; structure-borne noise},
	abstract = {Pulse-width modulation (PWM) represents a carrier-frequency-dependent structural excitation. The PWM’s excitation harmonics are also reflected in the air gap’s electromagnetic forces, the vibration response and the resulting structure‑borne noise. The last of these can be numerically predicted with a multiphysics finite element analysis (FEA) containing electronic, electromagnetic, mechanical and acoustic field problems. The multiphysics FEA are precise, but computationally inefficient and consequently inadequate for parametric studies. This paper introduces a method for a fast structure‑borne noise prediction at PWM excitation. The presented approach contains the Extended field reconstruction method (EFRM) to handle the magnetic saturation and slotting effects in magnetics, and the modal decomposition to couple the electromagnetic and mechanical domains. Finally, the structure‑borne sound power level is calculated via the vibration‑velocity response. Indeed, this approach demands a pre‑calculation of the basis functions and modal parameters from the FEA, but afterwards the effect of the different PWM excitation cases can be evaluated in a few seconds. The proposed method can calculate the structure‑borne noise at PWM excitation accurately and is more than 104 times faster than the conventional multiphysics FEA approach.},
	issn = {0039-2480},	pages = {471-481},	doi = {10.5545/sv-jme.2019.6115},
	url = {https://www.sv-jme.eu/article/structure-borne-noise-at-pwm-excitation-using-an-extended-field-reconstruction-method-and-modal-decomposition/}
}
Luznar, J.,Slavič, J.,Boltežar, M.
2019 October 65. Structure-borne Noise at PWM Excitation Using an Extended Field Reconstruction Method and Modal Decomposition. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 65:9
%A Luznar, Janez 
%A Slavič, Janko 
%A Boltežar, Miha 
%D 2019
%T Structure-borne Noise at PWM Excitation Using an Extended Field Reconstruction Method and Modal Decomposition
%B 2019
%9 carrier frequency; electromagnetic forces; extended field reconstruction method; modal decomposition; structure-borne noise
%! Structure-borne Noise at PWM Excitation Using an Extended Field Reconstruction Method and Modal Decomposition
%K carrier frequency; electromagnetic forces; extended field reconstruction method; modal decomposition; structure-borne noise
%X Pulse-width modulation (PWM) represents a carrier-frequency-dependent structural excitation. The PWM’s excitation harmonics are also reflected in the air gap’s electromagnetic forces, the vibration response and the resulting structure‑borne noise. The last of these can be numerically predicted with a multiphysics finite element analysis (FEA) containing electronic, electromagnetic, mechanical and acoustic field problems. The multiphysics FEA are precise, but computationally inefficient and consequently inadequate for parametric studies. This paper introduces a method for a fast structure‑borne noise prediction at PWM excitation. The presented approach contains the Extended field reconstruction method (EFRM) to handle the magnetic saturation and slotting effects in magnetics, and the modal decomposition to couple the electromagnetic and mechanical domains. Finally, the structure‑borne sound power level is calculated via the vibration‑velocity response. Indeed, this approach demands a pre‑calculation of the basis functions and modal parameters from the FEA, but afterwards the effect of the different PWM excitation cases can be evaluated in a few seconds. The proposed method can calculate the structure‑borne noise at PWM excitation accurately and is more than 104 times faster than the conventional multiphysics FEA approach.
%U https://www.sv-jme.eu/article/structure-borne-noise-at-pwm-excitation-using-an-extended-field-reconstruction-method-and-modal-decomposition/
%0 Journal Article
%R 10.5545/sv-jme.2019.6115
%& 471
%P 11
%J Strojniški vestnik - Journal of Mechanical Engineering
%V 65
%N 9
%@ 0039-2480
%8 2019-10-02
%7 2019-10-02
Luznar, Janez, Janko  Slavič, & Miha  Boltežar.
"Structure-borne Noise at PWM Excitation Using an Extended Field Reconstruction Method and Modal Decomposition." Strojniški vestnik - Journal of Mechanical Engineering [Online], 65.9 (2019): 471-481. Web.  17 Oct. 2019
TY  - JOUR
AU  - Luznar, Janez 
AU  - Slavič, Janko 
AU  - Boltežar, Miha 
PY  - 2019
TI  - Structure-borne Noise at PWM Excitation Using an Extended Field Reconstruction Method and Modal Decomposition
JF  - Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2019.6115
KW  - carrier frequency; electromagnetic forces; extended field reconstruction method; modal decomposition; structure-borne noise
N2  - Pulse-width modulation (PWM) represents a carrier-frequency-dependent structural excitation. The PWM’s excitation harmonics are also reflected in the air gap’s electromagnetic forces, the vibration response and the resulting structure‑borne noise. The last of these can be numerically predicted with a multiphysics finite element analysis (FEA) containing electronic, electromagnetic, mechanical and acoustic field problems. The multiphysics FEA are precise, but computationally inefficient and consequently inadequate for parametric studies. This paper introduces a method for a fast structure‑borne noise prediction at PWM excitation. The presented approach contains the Extended field reconstruction method (EFRM) to handle the magnetic saturation and slotting effects in magnetics, and the modal decomposition to couple the electromagnetic and mechanical domains. Finally, the structure‑borne sound power level is calculated via the vibration‑velocity response. Indeed, this approach demands a pre‑calculation of the basis functions and modal parameters from the FEA, but afterwards the effect of the different PWM excitation cases can be evaluated in a few seconds. The proposed method can calculate the structure‑borne noise at PWM excitation accurately and is more than 104 times faster than the conventional multiphysics FEA approach.
UR  - https://www.sv-jme.eu/article/structure-borne-noise-at-pwm-excitation-using-an-extended-field-reconstruction-method-and-modal-decomposition/
@article{{sv-jme}{sv-jme.2019.6115},
	author = {Luznar, J., Slavič, J., Boltežar, M.},
	title = {Structure-borne Noise at PWM Excitation Using an Extended Field Reconstruction Method and Modal Decomposition},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {65},
	number = {9},
	year = {2019},
	doi = {10.5545/sv-jme.2019.6115},
	url = {https://www.sv-jme.eu/article/structure-borne-noise-at-pwm-excitation-using-an-extended-field-reconstruction-method-and-modal-decomposition/}
}
TY  - JOUR
AU  - Luznar, Janez 
AU  - Slavič, Janko 
AU  - Boltežar, Miha 
PY  - 2019/10/02
TI  - Structure-borne Noise at PWM Excitation Using an Extended Field Reconstruction Method and Modal Decomposition
JF  - Strojniški vestnik - Journal of Mechanical Engineering; Vol 65, No 9 (2019): Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2019.6115
KW  - carrier frequency, electromagnetic forces, extended field reconstruction method, modal decomposition, structure-borne noise
N2  - Pulse-width modulation (PWM) represents a carrier-frequency-dependent structural excitation. The PWM’s excitation harmonics are also reflected in the air gap’s electromagnetic forces, the vibration response and the resulting structure‑borne noise. The last of these can be numerically predicted with a multiphysics finite element analysis (FEA) containing electronic, electromagnetic, mechanical and acoustic field problems. The multiphysics FEA are precise, but computationally inefficient and consequently inadequate for parametric studies. This paper introduces a method for a fast structure‑borne noise prediction at PWM excitation. The presented approach contains the Extended field reconstruction method (EFRM) to handle the magnetic saturation and slotting effects in magnetics, and the modal decomposition to couple the electromagnetic and mechanical domains. Finally, the structure‑borne sound power level is calculated via the vibration‑velocity response. Indeed, this approach demands a pre‑calculation of the basis functions and modal parameters from the FEA, but afterwards the effect of the different PWM excitation cases can be evaluated in a few seconds. The proposed method can calculate the structure‑borne noise at PWM excitation accurately and is more than 104 times faster than the conventional multiphysics FEA approach.
UR  - https://www.sv-jme.eu/article/structure-borne-noise-at-pwm-excitation-using-an-extended-field-reconstruction-method-and-modal-decomposition/
Luznar, Janez, Slavič, Janko, AND Boltežar, Miha.
"Structure-borne Noise at PWM Excitation Using an Extended Field Reconstruction Method and Modal Decomposition" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 65 Number 9 (02 October 2019)

Authors

Affiliations

  • Domel, d.o.o., Slovenia
  • University of Ljubljana, Faculty of Mechanical Engineering, Slovenia
  • University of Ljubljana, Faculty of Mechanical Engineering, Slovenia

Paper's information

Strojniški vestnik - Journal of Mechanical Engineering 65(2019)9, 471-481

10.5545/sv-jme.2019.6115

Pulse-width modulation (PWM) represents a carrier-frequency-dependent structural excitation. The PWM’s excitation harmonics are also reflected in the air gap’s electromagnetic forces, the vibration response and the resulting structure‑borne noise. The last of these can be numerically predicted with a multiphysics finite element analysis (FEA) containing electronic, electromagnetic, mechanical and acoustic field problems. The multiphysics FEA are precise, but computationally inefficient and consequently inadequate for parametric studies. This paper introduces a method for a fast structure‑borne noise prediction at PWM excitation. The presented approach contains the Extended field reconstruction method (EFRM) to handle the magnetic saturation and slotting effects in magnetics, and the modal decomposition to couple the electromagnetic and mechanical domains. Finally, the structure‑borne sound power level is calculated via the vibration‑velocity response. Indeed, this approach demands a pre‑calculation of the basis functions and modal parameters from the FEA, but afterwards the effect of the different PWM excitation cases can be evaluated in a few seconds. The proposed method can calculate the structure‑borne noise at PWM excitation accurately and is more than 104 times faster than the conventional multiphysics FEA approach.

carrier frequency; electromagnetic forces; extended field reconstruction method; modal decomposition; structure-borne noise