Spread Spectrum Modulation by Using Asymmetric-Carrier Random PWM

Máthé, László; Lungeanu, F.; Séra, Dezső; Rasmussen, Peter Omand; Pedersen, John Kim

doi:10.1109/tie.2011.2179272

Cited by 70 publications

(34 citation statements)

References 22 publications

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“…For example, [21] produces random pulse-position-switching commands by adopting varying rising/falling slopes of triangular wave to reduce the carrier harmonic and acoustic noise of a motor drive. The asymmetrical pulse gives an additional degree of freedom when selective harmonic elimination [22] or bee colony optimization [23] is used.…”

Section: Introductionmentioning

confidence: 99%

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Voltage Source Inverter Drive Using Error-compensated Pulse Width Modulation

Chen

Lin³

2016

Journal of Power Electronics

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An error-compensated pulse width modulator (ECPWM) is proposed to improve the baseband harmonic performance and the switching loss of voltage source inverters (VSIs). Selecting between harmonic distortion and switching loss is a design tradeoff in the conventional space vector pulse width modulation. In this work, an accumulated difference in produced and desired phase voltages is considered to adjust the reference signal. This mechanism can compensate for the voltage error in the previous carrier period. With error compensation every half-carrier period, the proposed ECPWM allows one-half reduction in carrier frequency without scarifying baseband harmonic distortion. The proposed modulator is applied to a three-phase VSI with R-L load and a motor-speed-control system for experiments. The measured efficiency and operating temperature of switches confirm the effectiveness of the proposed scheme.

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Section: Introductionmentioning

confidence: 99%

“…The asymmetrical pulse gives an additional degree of freedom when selective harmonic elimination [22] or bee colony optimization [23] is used. All the asymmetrical PWMs in [21]- [23] focus on declining harmonics only.…”

Section: Introductionmentioning

confidence: 99%

Voltage Source Inverter Drive Using Error-compensated Pulse Width Modulation

Chen

Lin³

2016

Journal of Power Electronics

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“…These types of techniques pursue different outcomes by acting on the signal that feeds each type of machine, for example: improved performance, increased control, decreased consumption, or improved quality of the power signal itself. Some of these techniques have been recently developed and they have been tested http with the objective of reducing acoustic noise level [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Influence of constructive parameters and power signals on sound quality and airborne noise radiated by inverter-fed induction motors

et al. 2015

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“…During 2013, markets outside Europe have increased, including China and the Asia-Pacific region as reported by the EPIA [1]. As a consequence, there were almost 140 GW [1] of PV systems installed worldwide at the end of 2013, and this number could increase by [40][41][42][43][44][45][46][47][48][49][50] corresponding to the installations during 2014, as reported by Ash Sharma from IHS Technology [2].…”

Section: Introductionmentioning

confidence: 99%