压接式IGBT开关特性测试平台的设计

发布时间：2018-03-20 12:20

本文选题：压接式IGBT　切入点：开关特性　出处：《北京交通大学》2017年硕士论文　论文类型：学位论文

【摘要】：目前,柔性直流输电在全世界范围内,尤其是我国,都在朝着高电压等级,大容量方向发展,这无疑对其中关键设备换流阀和混合式直流断路器有了更高的要求。同样,作为换流阀和断路器重要组成的开关器件IGBT,其封装性能以及电气性能要求也必然更加严格。作为老式的焊接型IGBT,已经渐渐不能满足现在电力系统的要求,随之产生的一种新的压接型IGBT,在功率等级、开关速度等方面有着明显的优势,已成为柔性直流输电的优选器件。因此,对压接式IGBT开关特性测试有其工程实际意义。本文主要完成以下工作。首先,本文采用公式理论推导与仿真模拟相结合来完成测试平台中恒流充电装置的设计。为改变开关特性测试平台母线电容传统的由市电,经调压器,再通过变压器,最后由整流桥接充电电阻充电方式所引起的充电效率低、难控制电容电压、怕短路等缺点,设计一套基于LC谐振原理的恒流充电系统,并通过MATLAB进行仿真验证。然后,以仿真结果为依托,根据理论分析和器件的实际特性,对系统涉及到的元器件进行选取,完成恒流充电装置的实际搭建。装置中不仅要对电容、电感、变压器、整流硅等主电路器件合理选取,还要确定控制及保护设备,并以实际充电效果验证整个装置的可靠性和实用性。最后,针对ABB公司生产的StakPak型IGBT,采用双脉冲测试原理,完成开关特性测试平台的设计并进行测试。测试平台运行过程中,把充电装置实际应用到测试的预充电环节,验证装置电流电压指标达到测试平台要求。对于IGBT器件的开关特性测试同样采用MATLAB仿真和实测结合对比的方法,给出相关结论。
[Abstract]:At present, the flexible direct current transmission in the world, especially in our country, is developing towards the direction of high voltage level and large capacity, which undoubtedly has higher requirements for the key equipment, commutation valve and hybrid DC circuit breaker. As an important component of converter valves and circuit breakers, IGBT, which is an important component of converter valves and circuit breakers, is bound to be more stringent in its packaging and electrical performance. As an old-fashioned welded IGBT, it has gradually failed to meet the requirements of the current power system. A new voltage-connected IGBT, which has obvious advantages in power level, switching speed and so on, has become an excellent device for flexible direct current transmission. It is of practical significance to test the characteristics of voltage-connected IGBT switches. The main work of this paper is as follows. First, In this paper, the design of constant current charging device in the test platform is completed by combining formula theory derivation and simulation. Finally, a constant current charging system based on LC resonance principle is designed, which is caused by the low charging efficiency caused by the rectifier bridge charging resistance charging mode, which is difficult to control the capacitor voltage and is afraid of short circuit. Then, the system is simulated by MATLAB. Based on the simulation results, according to the theoretical analysis and the actual characteristics of the device, the components involved in the system are selected, and the practical construction of the constant current charging device is completed. In the device, not only the capacitance, the inductance, the transformer, but also the capacitance, the inductance and the transformer are not only used in the device. The reasonable selection of the main circuit devices, such as rectifier silicon, should also determine the control and protection equipment, and verify the reliability and practicability of the whole device with the actual charging effect. Finally, for the StakPak IGBT produced by ABB Company, the principle of double pulse testing is adopted. Complete the design and test of the test platform of switch characteristics. In the running process of the test platform, the charging device is applied to the pre-charging link of the test. The current and voltage indexes of the device meet the requirements of the test platform. The test results of the switching characteristics of the IGBT devices are also presented by combining the MATLAB simulation with the actual measurement and comparison.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN322.8;TM721.1

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