Design of Pulse Power Supply for High-Power Semiconductor Laser Diode Arrays

Zhao, Qian; Li, Shu; Cao, Ruru; Wang, Deyu; Yuan, Jing

doi:10.1109/access.2019.2928011

Cited by 14 publications

(10 citation statements)

References 21 publications

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“…a cascaded H-Bridge [81]) is the best solution, as it allows for a wide-span output voltage/current control and a sharp voltage slope formation, essential for plasma processing. A similar approach is presented in [87], where a cascaded connection of multiple buck converters was utilized to develop a pulse power supply for high-energy lasers.…”

Section: Figure 13mentioning

confidence: 99%

High Performance Power Supplies for Plasma Materials Processing

2021

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Integrated circuits, flat panel displays, solar panels, architectural glass, high resolution camera and many other products are landmarks of the 21 st century. All of these different everyday objects have one thing in common -they are manufactured using plasma processing techniques. The aim of this paper is to introduce this silent hero of modern industry, to a broader audience. An evaluation is made of common types of power converters within the scope of plasma processing applications, while the key requirements and future challenges for such power supplies are discussed.INDEX TERMS Plasma applications, plasma materials processing, power conversion, power electronics.

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Section: Figure 13mentioning

confidence: 99%

High Performance Power Supplies for Plasma Materials Processing

2021

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“…The other part is a pulsed constant-current source that uses MOSFETs, bipolar junction transistors, and other power components as linear regulators for current regulation. To increase the current output capacity, using multiple constant-current circuits in parallel is an efficient option [ 20 , 21 , 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

“…When the LD is working in a constant-current state, it is approximately equivalent to a small resistor with resistance

, and

can be represented by Equation ( 7 ) [ 22 , 24 ]:

We can then substitute Equation ( 7 ) into Equation ( 5 ):

where

is the threshold voltage of the LD and

is the equivalent resistance of the LD .…”

Section: Introductionmentioning

confidence: 99%

A Load-Adaptive Driving Method for a Quasi-Continuous-Wave Laser Diode

Wu,

Liu,

Sun

et al. 2024

Micromachines

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A quasi-continuous-wave (QCW) laser diode (LD) driver is commonly used to drive diode bars and stacks designed specifically for QCW operations in solid-state lasers. Such drivers are optimized to deliver peak current and voltage pulses to LDs while maintaining low average power levels. As a result, they are widely used in laser processing devices and laser instruments. Traditional high-energy QCW LD drivers primarily use capacitors as energy storage components and pulsed constant-current sources with op-amps and power metal-oxide-semiconductor field-effect transistors (MOSFETs) as their core circuits for generating repeated constant-current pulses. The drawback of this type of driver is that the driver’s output voltage needs to be manually adjusted according to the operating voltage of the load before use to maximize driver efficiency while providing a sufficient current. Another drawback is its inability to automatically adjust the output voltage to maintain high efficiency when the load changes during the driver operation. Drastic changes in the load can cause the driver to fail to function properly in extreme cases. Based on the above traditional circuit structure, this study designed a stability compensation circuit and realized a QCW LD driver for driving a GS20 diode stack with a maximum repetition rate of 100 Hz, a constant current of approximately 300 A, a load voltage of approximately 10 V, and a pulse width of approximately 300 μs. In particular, a high-efficiency, load-adaptive driving method was used with the MOSFETs in the critical saturation region (i.e., between the linear and saturated regions), controlling its power loss effectively while achieving maximum output current of the driver. The experiments demonstrated that the driver efficiency could be maintained at more than 80% when the load current varied from 50 to 300 A.

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“…With the rapid development of laser emission technology, electromagnetic propulsion and plasma science, the high-voltage power supply (HPS) has attracted a great deal of attention [1][2][3][4]. At present, the commonly used circuits of HPS in the electromagnetic propulsion system include the series resonant circuit, the buck circuit and the batteries connected in series (BCSs) circuit, as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

A Novel Closed-Loop Control Method for Li-Ion Batteries Connected in Series Power Supply Based on the Time Sequences Recalculation Algorithm

et al. 2021

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The charging time of Li-ion batteries connected in series (LBCSs) power supply is the main concern in an electromagnetic propulsion system. However, the capacity loss of a Li-ion battery is inevitable due to the repetitive operation of LBCSs power supply, which leads to the decrease in the average current. Thus, the voltages of symmetrically distributed pulse capacitors of LBCSs power supply will not reach the setting value in the specified time. This paper proposes a novel closed-loop control method to solve the problem. By collecting the pulse capacitor voltage and the circuit current, the time sequences of Li-ion batteries are recalculated in real time in a closed-loop to increase the average current. The time-domain model of the circuit topology of the LBCSs power supply and an innovative closed-loop control method based on the time sequences recalculation algorithm are described first. Then, the circuit model is built in PSIM for simulation analyses. Finally, a series of experiments are conducted to confirm the effectiveness of the method on the megawatt LBCSs power supply platform. Both the simulation and experimental results validate that the proposed method not only shortens the charging time, but also increases the average current. In practical experiments, the charging time is shortened by 4.5% and the average current is increased by 4.8% using the proposed method at the capacity loss of 50 V.

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Design of Pulse Power Supply for High-Power Semiconductor Laser Diode Arrays

Cited by 14 publications

References 21 publications

High Performance Power Supplies for Plasma Materials Processing

High Performance Power Supplies for Plasma Materials Processing

A Load-Adaptive Driving Method for a Quasi-Continuous-Wave Laser Diode

A Novel Closed-Loop Control Method for Li-Ion Batteries Connected in Series Power Supply Based on the Time Sequences Recalculation Algorithm

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