With the rapid development of laser technology, high-repetition-rate (PRR) pulsed laser power supplies are increasingly widely used in laser processing, medical treatment, scientific research, and other fields. Achieving efficient boost conversion and equalization design in continuous current mode (CRM) has become an important research direction. This paper proposes a boost conversion equalization design scheme for PRR pulsed laser power supplies based on CRM conditions. Through theoretical analysis and experimental verification, the effectiveness and superiority of this scheme are demonstrated.
Keywords: CRM; repetition rate pulse; laser power supply; boost converter; equalization design
I. Introduction
With the continuous advancement of laser technology, high-repetition-rate (CRNR) pulsed laser power supplies, as a high-performance laser energy source, are finding increasingly widespread applications in various fields. However, under CRM (Continuous Repetition Rate) conditions, the boost conversion and equalization design of CRNR pulsed laser power supplies face numerous challenges. How to improve boost conversion efficiency and equalization performance while ensuring power supply stability has become an urgent problem to be solved.
II. Characteristic Analysis of High-Repetition-Rate Pulse Laser Power Supply under CRM Condition
In CRM mode, high-repetition-rate pulsed laser power supplies are characterized by high pulse frequency, high energy density, and stable power. These characteristics place higher demands on the boost converter and equalization design. First, the boost converter needs to respond quickly to the pulse signal to ensure effective pulse energy transfer; second, the equalization design needs to ensure uniform energy distribution among the modules to avoid overheating or damage.
III. Equalization Design Scheme for Boost Converter
To address the characteristics of high-repetition-rate (CRRM) pulsed laser power supplies, this paper proposes a boost converter equalization design scheme. This scheme mainly includes the following parts:
High-efficiency boost converter design
A high-efficiency boost converter was designed using advanced power semiconductor devices and an optimized circuit topology. This converter features fast response, high conversion efficiency, and stable output, meeting the requirements of high-repetition-rate pulsed laser power supplies under CRM conditions.
Intelligent Equalization Control Strategy
To achieve balanced energy distribution among the modules, this paper proposes an intelligent equalization control strategy. This strategy dynamically adjusts the input voltage or current of each module by real-time monitoring of parameters such as output power and temperature, ensuring uniform energy distribution across all modules.
Thermal management and protection design
To address the high energy density characteristics of high-repetition-rate pulsed laser power supplies, this paper also designs a thermal management and protection system. This system improves the power supply's heat dissipation performance by optimizing the heat dissipation structure and employing highly efficient heat dissipation materials; simultaneously, it ensures the power supply's safe and stable operation under abnormal conditions through overheat protection and overcurrent protection measures.
IV. Experimental Verification and Result Analysis
To verify the effectiveness of the proposed boost converter equalization design scheme, experimental results were conducted. The experimental results show that the scheme can achieve efficient boost converter and equalization design for CRM pulse laser power supplies. Specific performance is as follows:
Boost converter efficiency
Under CRM conditions, the boost converter designed in this paper can stably increase the input voltage to the required value and has high conversion efficiency. Experimental data show that the conversion efficiency of this converter can reach over 90%.
Balanced performance
Through an intelligent equalization control strategy, the scheme designed in this paper can achieve balanced energy distribution among the modules. Experimental results show that during long-term operation, the output power and temperature of each module remain stable and uniformly distributed.
Thermal management and protection performance
The thermal management and protection system designed in this paper can effectively reduce the operating temperature of the power supply and can promptly cut off the power supply in abnormal situations to protect it from damage. Experimental results show that the system has good heat dissipation performance, and its overheat protection, overcurrent protection, and other functions are all normal and effective.
V. Conclusion and Outlook
This paper proposes a boost converter equalization design scheme for a high-repetition-rate (CRRM) pulsed laser power supply based on the CRM state. The effectiveness and superiority of the scheme are demonstrated through theoretical analysis and experimental verification. This scheme achieves efficient boost converter and equalization design for CRRM-based pulsed laser power supplies, exhibiting high conversion efficiency and equalization performance. Future work will further optimize this scheme and explore its application prospects in more fields.
