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Cited by 95 publications
(32 citation statements)
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“…To further improve the efficiency, an adaptive phase-shift (APS) control method which determines the phase-shift value between gating signals according to the load level is also proposed. Various efficiency enhanacement techniques regarding adaptive or variable phase-shift control have been proposed in the literature [33][34][35]. In [33], changing modulation method according to load conditions has been suggested, pulse-width modulation (PWM) are utilized to replace phase-shift control under light-load condition to reduce the circulating loss of phase-shift full-bridge converter.…”
Section: Operating Principle Of the Universal Bidirectional Dc-dc Conmentioning
confidence: 99%
See 2 more Smart Citations
“…To further improve the efficiency, an adaptive phase-shift (APS) control method which determines the phase-shift value between gating signals according to the load level is also proposed. Various efficiency enhanacement techniques regarding adaptive or variable phase-shift control have been proposed in the literature [33][34][35]. In [33], changing modulation method according to load conditions has been suggested, pulse-width modulation (PWM) are utilized to replace phase-shift control under light-load condition to reduce the circulating loss of phase-shift full-bridge converter.…”
Section: Operating Principle Of the Universal Bidirectional Dc-dc Conmentioning
confidence: 99%
“…In [34,35], new control methods for full-bridge LLC resonant converters are presented. Fxed-frequency phase-shifted pulse width modulation and phase-shifted gate signals based on predetermined optimal duty ratio are used to regulate the output voltage at light load in [34,35], respectively. However, these approaches mainly focus on the improvement of light-load efficiency only.…”
Section: Operating Principle Of the Universal Bidirectional Dc-dc Conmentioning
confidence: 99%
See 1 more Smart Citation
“…For the sake of minimizing the size of the resonant inductor used to store sufficient energy for the lagging leg of the inverter bridge to achieve ZVS under a light load condition, many different improvement methods have been proposed, for example, a combined phase-shift control algorithm and frequency modulation was proposed to achieve ZVS over the full load range in [16]; new control methods [17][18][19][20] were used for the converters under a light load condition to improve efficiency; a converter containing two paralleled half-bridge inverters and an auxiliary inductor on the primary side is proposed [21], which allows the stored energy for ZVS operation to change adaptively with duty-cycle and thus reduces the output filter inductance; phase-shift control with an L-C-L filter could also be utilized for ZVS to improve the performance [22]; DC link voltage was adjusted dynamically by power factor correction (PFC) in order to relieve the stress on semiconductor switches and improve the converter efficiency [23]; a two-stage isolated bi-directional DC-DC converter was investigated [24] which could enlarge the ZVS region by interleaving the converter with supercapacitors; dead-time for the lagging leg of the inverter bridge was adjusted predictively to assist the switches to perform ZVS at light load [25]; two additional switches were connected in parallel with the lagging leg of the inverter bridge to reduce switching loss under light load [26,27]; a novel ZCS-ZVS power factor correction PFC converter was proposed [28] with an efficiency of higher than 97%; two additional low-current diodes were added to the center-tap of a transformer secondary to improve ZVS at light load [29]; some other researchers proposed different control methods [30,31] and accomplished ZCS for the lagging leg, while retaining ZVS for the leading leg [31]. Improved ZVS techniques for the active switches of the forward converter are also adopted [32] in order to reduce switching and conducting losses to deal with PV power and wind energy.…”
Section: Introductionmentioning
confidence: 99%
“…More recently, wide range operation with narrow frequency variation is achieved in [9] by utilizing phase-shifted control for a full-bridge LLC converter. By combining the conventional concept of phase-shifted full-bridge topology, the output voltage is regulated through the control of the free-wheeling interval lengths.…”
Section: Introductionmentioning
confidence: 99%