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Individual difference of parallel batteries can cause battery overcharging or over-discharging. More seriously, single battery failure can result in system fault. An energy balancing strategy for battery stage of charge (SOC) balance and DC-DC converter output current sharing is proposed. In addition, the system is designed to cut off the module immediately once any cell fails. This strategy can extend...
This paper proposes an adaptive hysteresis sliding mode control method for double-switch buck-boost converter. First a hysteresis sliding mode current controller is applied to the converter such that the converter has a limited switching frequency; and second, adaptive control is adopted in order to enable the converter to work at a fixed switching frequency. The change of the switching frequency...
A 12-pulse diode bridge rectifier is often used in high-power rectification. However, the total harmonic distortion (THD) of input line current in 12-pulse rectifier does not meet the IEEE-519 standard. In order to reduce the harmonics to an acceptable level, we use a two-stage auxiliary circuit at dc side of the 12-pulse rectifier to eliminate harmonics actively. The effect of the auxiliary circuit’s...
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