Control and efficiency analysis for a Lundell-alternator/active-rectifier system in automotive applications

Abstract

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Efficiency improvement and power loss breakdown for a Lundell-alternator/active-rectifier system in automotive applications

“…An SVM scheme featuring six commutations per switching cycle is introduced in this paper and is compared against the modulation schemes presented by Sarafianos et al in [9] in an effort to improve the overall system efficiency by decreasing the switching losses. The SVM scheme has six commutations per switching cycle, which are reduced by 50% compared to the 12 commutations in the third harmonic modulation scheme and 25% compared to the 8 commutations in the DSVM scheme.…”

“…Fig. 11 in Appendix illustrates the efficiency compared to the results in [9] at different speed points. The passive rectifier results and the sinusoidal PWM (sPWM) are given only as a reference.…”

“…Third, the existence of the field winding suggests the existence of one additional degree of freedom, which complicates the implementation of the control strategy of the alternator/activerectifier system. Sarafianos et al presented in [9] a control strategy that addresses the challenges of active rectification. In this present paper a new Space Vector Modulation (SVM) is introduced with six commutations per switching cycle and the results are compared to the modulated schemes found in [9].…”

“…Sarafianos et al presented in [9] a control strategy that addresses the challenges of active rectification. In this present paper a new Space Vector Modulation (SVM) is introduced with six commutations per switching cycle and the results are compared to the modulated schemes found in [9].…”