Novel PWM-based control strategy of HF link SMR with sinusoidal line current

Chibani, Ali; Nakaoka, Mutsuo

doi:10.1049/ip-b.1991.0026

Cited by 4 publications

(2 citation statements)

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“…4(c) as (4), shown at the bottom of the page. From (4), the resonant inductor current and capacitor voltages can be solved to be (5) where (6) denote the natural frequency and characteristic impedance of the resonant circuit. From (5) and (6), the time interval of this mode and the maximum resonant inductor current are found to be…”

Section: A Soft-switching Operation and Governed Equationsmentioning

confidence: 99%

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A soft-switching mode rectifier with power factor correction and high frequency transformer link

Liaw

Chen

2000

IEEE Trans. Power Electron.

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This paper presents a soft-switching mode rectifier (SSMR) consisting of a power factor correction zero-voltage-transition-pulse-width-modulated (PFC ZVT-PWM) converter and a high-frequency transformer-coupled dc/dc zero voltage switching clamped voltage (ZVS-CV) converter. An easily implemented ZVT soft-switching mechanism is developed to reduce the switching losses and stresses of the power switches in the PFC ZVT-PWM converter. The operations of the proposed SSMR in various modes are analyzed in detail and the associated governed equations are derived. Then accordingly, a quantitative design procedure is developed to find the values of soft-switching circuit components. In the control aspect, the dynamic model of the SSMR is derived and a current waveform controller is designed, such that sinusoidal line current with low harmonics and near unity power factor is obtained. Under this condition, a voltage controller is also designed for yielding good dc output voltage control characteristics. Validity of the designed SSMR is verified experimentally.Index Terms-Dynamic modeling and control, power factor correction control, switching mode rectifier, ZVT soft-switching.

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Section: A Soft-switching Operation and Governed Equationsmentioning

confidence: 99%

“…However, their circuits are rather complicated and efficiencies are low. In [5], [6], various types of transformer isolated single-stage SMR's have been devised. Basically, they are constructed in series by a full-bridge rectifier and a highfrequency transformer-coupled converter with phase-shift control.…”

Section: Introductionmentioning

confidence: 99%