宽重复频率独立式脉冲功率直流电源系统关键技术研究

发布时间：2018-01-20 18:47

本文关键词： 脉冲功率电源高动态响应电流纹波抑制磁集成宽电压范围　出处：《哈尔滨工业大学》2017年博士论文　论文类型：学位论文

【摘要】：脉冲功率电源技术始于世界各国对于国防科研需求。随着开关技术、半导体器件及储能元件的进步,脉冲功率电源系统朝着高频化、小型化、轻量化及模块化的方向发展。相比于传统非脉冲功率直流电源系统,脉冲功率直流电源系统中往往具有平均功率负载与脉冲功率负载并存的工况,因此设计中需同时保证对平均功率负载及脉冲功率负载的高质量可靠供电。以蓄电池为主的储能单元具有能量密度大、可靠性高等优点而被广泛应用于直流电源系统中,但其同时存在功率密度小、循环寿命短等缺点。由于重复性脉冲功率负载峰值功率大且重复频率高,因此若单独采用蓄电池作为重复性脉冲功率电源系统储能元件,较大的蓄电池峰值功率容量配置势必导致电源系统平均功率容量浪费并进一步降低电源系统整体功率密度。同时,重复性脉冲功率负载引起的频繁高倍率充放电电流会导致蓄电池内部发热量剧增并大幅缩短蓄电池的使用寿命,此外高峰值功率变化引起的直流母线电压波动甚至会影响电源系统其他模块的正常工作。本文从重复性脉冲功率负载工况及脉冲功率储能元件特性着手,结合已有直流电源系统拓扑结构,深入开展脉冲功率技术相关知识及混合储能直流电源系统关键技术的研究。提出基于蓄电池/超级电容的混合储能双母线直流电源系统架构并对其工作模式进行分析研究,以实现降低脉冲功率负载对直流稳压母线的干扰、改善脉冲及非脉冲功率负载供电质量并提高电源系统供电可靠性和功率密度的目标,为脉冲功率直流电源系统的高效稳定工作提供可靠方案。脉冲功率变换器的动态响应能力决定着脉冲功率负载的供电质量。为解决传统Boost非隔离升压变换器中固有的右半平面零点导致动态响应较差的问题,提出基于多磁路耦合的磁集成升压变换器拓扑,旨在消除变换器右半平面零点、提高动态响应能力的同时抑制输入输出电流纹波。针对低压大电流脉冲功率负载特性,提出基于Buck变换器的抽头式可变电感降压变换器拓扑,通过改变变换器动态过程中的等效输出电感值,实现低稳态电流纹波及高动态电流变化率的优势结合。为提高脉冲功率负载供电可靠性、降低脉冲功率变换器及脉冲功率储能元件工作应力,混合储能双母线直流电源中引入脉冲功率辅助变换器以实现多路脉冲负载供电方案。为降低脉冲功率负载对主直流母线带来的扰动,结合抽头电感结构提出输入电流纹波抵消变换器拓扑,通过增加辅助电感、电容并与抽头电感共同工作,简化输入电流纹波抵消的设计制造过程。同时结合交错式变换器功率等级大、等效工作频率高以及辅助电感纹波抵消方案的优点,提出交错式纹波抵消变换器方案,为大功率脉冲功率辅助变换器的设计提供新的思路。在超级电容储能元件宽电压变化范围的工作特性的基础上,研究宽电压变换器拓扑工作特性及优化方案,提出多工作模式的变结构桥式变换器拓扑,优化变换器宽电压范围的稳态工况并提高变换器在宽电压范围下的工作效率。同时引入磁集成技术,以解决桥式变换器输入电流断续的问题。提出基于输入电压反馈的分段式变幅值三角载波控制方案,简化宽电压变换器环路优化设计过程并抑制工作模式切换时引起的功率波动,为磁集成多模态变结构桥式变换器高效稳定工作提供保证。本文针对50Hz-1kHz的宽重复频率范围脉冲功率负载供电提出基于混合储能方式的双直流母线脉冲功率电源系统架构以及对应的多路脉冲能量供给方案。同时针对电源系统中各子模块的工作需求,分别提出了基于磁集成技术及抽头式可变电感技术的升压及降压式高动态响应脉冲功率变换器拓扑、基于耦合电感技术及抽头电感技术的低电流纹波脉冲功率辅助变换器拓扑以及基于磁集成技术的宽电压范围高效多模态变结构桥式变换器拓扑。文中所提及研究内容,为混合储能式双母线脉冲电源整体架构研究以及其中各子模块的优化设计提供了有效的解决方案。
[Abstract]:In the world the need for scientific research of national defense. Pulsed power supply technology with switch technology, semiconductor devices and storage devices the progress of pulsed power supply system of high frequency, miniaturization, lightweight and modular direction. Compared to the traditional non pulsed power DC power supply system, pulse power system DC power supply often with the average power load and pulse power load coexisting conditions, so the design is required to ensure reliable power supply high quality load on the average power and pulse power load. The battery based energy storage unit has high energy density, high reliability and is widely used in DC power supply system, but it also has power density small, short cycle life disadvantages. By repetitive pulsed power load peak power and high repetition rate, so if the individual use battery as repeatability The pulse power supply system of energy storage element, battery peak power capacity allocation will inevitably lead to larger average power capacity wasted power system and further reduce the overall power density of power system. At the same time, repetitive pulsed power load caused by the frequent high rate discharge current will lead to increased internal heating battery and greatly shorten the service life of the battery, in addition to DC the bus voltage fluctuation caused by high peak power changes and even affect the normal operation of other modules in a power supply system. This paper from the repetitive pulsed power load and pulse power storage element characteristics, combined with the existing topology of DC power supply system, further study of pulsed power technology related knowledge and key technologies of hybrid energy storage DC power supply system. The battery / super capacitor hybrid energy storage can double bus architecture based on DC power supply system Research and analysis of the operating mode, which can reduce the interference of DC pulsed power load bus, improve the pulsed and non pulsed power load power quality and improve power system reliability and power density of the target, provides a reliable solution for the efficient and stable operation of pulse power DC power supply system. The dynamic response capability of pulsed power converter determines the quality of power supply power load pulses. In order to solve the traditional Boost non zeros in the right half plane inherent isolation boost converter in the dynamic response problem of the poor, the magnetic integrated converter topology based on magnetic coupling, to eliminate the zero converter right half plane, and improve the dynamic response capability of the input and output current ripple suppression for low voltage and high current pulsed power load characteristics, the tap type variable inductor buck Buck converter based on variable Converter topology, by changing the equivalent output inductor converter in the dynamic process of value realization with low steady-state current ripple and advantages of high dynamic current change rate. In order to improve the reliability of power supply of pulse power load, reducing the pulse power converter and pulse power storage element working stress, hybrid energy storage pulsed power converters is introduced double bus DC power supply to realize multi-channel pulse load power supply scheme. In order to reduce the pulse power load disturbance brought to the main DC bus, the input current ripple cancellation converter with tapped inductor structure, by adding auxiliary inductance, capacitance and inductance and tap work together to simplify the design of input current ripple cancellation and combining with the manufacturing process. Interleaved converter power level, and has the advantages of high working frequency equivalent auxiliary inductor ripple cancellation scheme, proposed interleaved ripple cancellation Converter program, to provide new ideas for the design of auxiliary power converter with high power pulse. Basic characteristics can change range of components in a wide voltage super capacitor on the study of wide working voltage characteristic of the converter topology and optimization scheme, put forward multiple working mode variable structure bridge converter topology, steady state optimization wide range of voltage converter and improve the converter efficiency in wide voltage range. At the same time the introduction of magnetic integration technology, to solve the bridge converter discontinuous input current. This segmented variable amplitude triangular carrier control scheme based on the feedback of the input voltage, wide voltage converter to simplify the design process and optimization of loop power fluctuation caused by suppression of modes switching, provide a guarantee for the magnetic integrated multi mode variable structure bridge converter based on 50Hz-1kHz. The efficient and stable operation of the wide range of frequency The pulse power supply load of hybrid energy storage mode double DC bus pulsed power supply system architecture and the corresponding pulse power supply scheme based on. At the same time for each sub module of the power system work demand, put forward respectively increasing and decreasing pressure of magnetic integration technique and tapped variable inductance technology high dynamic response pulse power converter topology based on the coupled inductor and tapped inductor technology low ripple current pulse power auxiliary converter topology and wide voltage range of magnetic integration technique, multi mode variable structure bridge converter topology based on the contents mentioned in this paper, for the hybrid energy storage type double bus architecture and the study of pulse power optimization design the sub module provides effective solutions.

【学位授予单位】：哈尔滨工业大学
【学位级别】：博士
【学位授予年份】：2017
【分类号】：TM46

【相似文献】