Abstract---The stability of the drive current is very important for a laser driver, while it is difficult to maintain the current stable at a high value for the laser driver. On the other hand, the range of the drive ...Abstract---The stability of the drive current is very important for a laser driver, while it is difficult to maintain the current stable at a high value for the laser driver. On the other hand, the range of the drive current is expected to be as wide as possible to be applied to different kinds of lasers. In this paper, a high current laser driver for the superluminescent light emitting diode （SLED） is presented, which is used in the optic fiber gyro embedded by a 0.35 μm bipolar complementary metal-oxide-semiconductor transistor （BiCMOS） process. The laser driver provides automatic power control and certain value of current determined by the external resister. The system is based on the optic-electric feedback theory and uses the closed-loop control technique to maintain the drive current stable. The system is capable of producing stable current ranges from 4 mA to 200 mA when the value of external resister changes.展开更多
SWISS整流器因其优越的性能被广泛应用于充电桩、分布式直流电源等场合。其首要的控制目标是维持稳定的直流侧输出电压、正弦且对称的交流侧三相电流以及网侧单位功率因数。然而,当电网出现幅值跌落时,基于传统的控制方法很难同时实现上...SWISS整流器因其优越的性能被广泛应用于充电桩、分布式直流电源等场合。其首要的控制目标是维持稳定的直流侧输出电压、正弦且对称的交流侧三相电流以及网侧单位功率因数。然而,当电网出现幅值跌落时,基于传统的控制方法很难同时实现上述3个控制目标。因此,该文分别提出适用于电网幅值跌落的输出电压恒定控制(constant output voltage control,COVC)方法和电流正弦对称控制(sinusoidal and symmetrical current control,SSCC)方法。前者可实现直流侧输出电压恒定无波动,但无法实现网侧电流的正弦且对称。后者可实现网侧电流正弦且对称,但无法实现直流侧电压输出恒定无波动。在此基础上,该文结合这2种控制方法的优势进一步提出一种改进的协调优化控制(improved coordination and optimization control,ICOC)方法,可实现网侧处于单位功率因数的同时,在直流侧输出电压恒定无波动和网侧电流正弦且对称之间进行协调优化,实验结果证明ICOC方法相较于COVC和SSCC具有显著的优势,与该文的理论分析一致。展开更多
文摘Abstract---The stability of the drive current is very important for a laser driver, while it is difficult to maintain the current stable at a high value for the laser driver. On the other hand, the range of the drive current is expected to be as wide as possible to be applied to different kinds of lasers. In this paper, a high current laser driver for the superluminescent light emitting diode （SLED） is presented, which is used in the optic fiber gyro embedded by a 0.35 μm bipolar complementary metal-oxide-semiconductor transistor （BiCMOS） process. The laser driver provides automatic power control and certain value of current determined by the external resister. The system is based on the optic-electric feedback theory and uses the closed-loop control technique to maintain the drive current stable. The system is capable of producing stable current ranges from 4 mA to 200 mA when the value of external resister changes.
文摘SWISS整流器因其优越的性能被广泛应用于充电桩、分布式直流电源等场合。其首要的控制目标是维持稳定的直流侧输出电压、正弦且对称的交流侧三相电流以及网侧单位功率因数。然而,当电网出现幅值跌落时,基于传统的控制方法很难同时实现上述3个控制目标。因此,该文分别提出适用于电网幅值跌落的输出电压恒定控制(constant output voltage control,COVC)方法和电流正弦对称控制(sinusoidal and symmetrical current control,SSCC)方法。前者可实现直流侧输出电压恒定无波动,但无法实现网侧电流的正弦且对称。后者可实现网侧电流正弦且对称,但无法实现直流侧电压输出恒定无波动。在此基础上,该文结合这2种控制方法的优势进一步提出一种改进的协调优化控制(improved coordination and optimization control,ICOC)方法,可实现网侧处于单位功率因数的同时,在直流侧输出电压恒定无波动和网侧电流正弦且对称之间进行协调优化,实验结果证明ICOC方法相较于COVC和SSCC具有显著的优势,与该文的理论分析一致。
