Improved Pulse Density Modulation for Semi-bridgeless Active Rectifier in Inductive Power Transfer System

Fan, Manyi; Shi, Liming; Yin, Zhenggang; Jiang, Longbin; Zhang, Facong

doi:10.1109/tpel.2018.2867902

Cited by 43 publications

(23 citation statements)

References 30 publications

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“…Therefore, the secondary equivalent circuit, in which the primary circuit is replaced with the induced voltage vsec, can be represented as shown in Figure 2. By Faraday's law, vsec can be expressed as follows [28]. In this paper, to simplify the analysis, with the exception of the equivalent series resistance of the output capacitor, the parasitics are ignored, and all of the devices are assumed to be ideal.…”

Section: System Descriptionmentioning

confidence: 99%

Section: System Descriptionmentioning

confidence: 99%

“…Assuming that the modulation frequency of the switching frequency and duty ratio is much lower than the switching frequency, Equations (18)- (27) can be defined by a nonlinear large-signal model, and Figure 6 shows the nonlinear large-signal equivalent circuit. dt ( ) ( )…”

Section: Of 19mentioning

confidence: 99%

“…In addition, the PWM scheme proposed in [26] enables the rectifier switches to achieve ZVS. The pulse density modulation (PDM) method enables the rectifier switches to achieve ZVS and ZCS, improving the efficiency compared to the PWM method [27,28]. For these methods, because the frequency, duty ratio, and phase angle of the primary switch are fixed, the primary switch operates at the resonant frequency, and no data communication is required.…”

Section: Introductionmentioning

confidence: 99%

“…The accurate modeling of the S-BAR is essential to design a controller with good performance using the aforementioned methods. However, most of the researches on an IPT system with an S-BAR have focused on the control scheme of the rectifier switches [22][23][24][25][26][27][28][29] and steady-state analysis [29,30]. The authors of [31] discussed a small-signal modeling method for an IPT system with an S-BAR, but this method did not reflect the dynamics of a resonant network.…”

Section: Introductionmentioning

confidence: 99%

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Modeling and Control of Double-Sided LCC Compensation Topology with Semi-Bridgeless Active Rectifier for Inductive Power Transfer System

et al. 2019

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This paper proposes the modeling and design of a controller for an inductive power transfer (IPT) system with a semi-bridgeless active rectifier (S-BAR). This system consists of a double-sided Inductor-Capacitor-Capacitor (LCC) compensation network and an S-BAR, and maintains a constant output voltage under load variation through the operation of the rectifier switches. Accurate modeling is essential to design a controller with good performance. However, most of the researches on S-BAR have focused on the control scheme for the rectifier switches and steady-state analysis. Therefore, modeling based on the extended describing function is proposed for an accurate dynamic analysis of an IPT system with an S-BAR. Detailed mathematical analyses of the large-signal model, steady-state operating solution, and small-signal model are provided. Nonlinear large-signal equivalent circuit and linearized small-signal equivalent circuit are presented for intuitive understanding. In addition, worst case condition is selected under various load conditions and a controller design process is provided. To demonstrate the effectiveness of the proposed modeling, experimental results using a 100 W prototype are presented.

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Section: System Descriptionmentioning

confidence: 99%

Section: System Descriptionmentioning

confidence: 99%

Section: Of 19mentioning

confidence: 99%