【作者】 汤正道；

【导师】 鲁昌华；

【作者基本信息】 合肥工业大学 ， 电路与系统， 2005， 硕士

【摘要】 IPM(Intelligent Power Module)即智能功率模块是先进的混合集成功率器件,由高速、低功耗的IGBT(Insulated-Gate Bipolar Transistor)芯片和优选的门极驱动及保护电路构成。与其它功率模块相比,选用IPM可以使系统硬件电路简单,尺寸减小,可靠性提高,开发周期缩短。基于上述优点,IPM广泛应用于变频领域。 IPM性能参数是衡量产品变频性能的主要指标,因此,对其性能进行测试就显得非常重要;但由于IPM所要测试的参数种类较多且部分参数难以捕捉,因此,目前针对IPM测试方面的相关研究很少。我们就此立项并依据国家技术监督局发布的国标《绝缘栅双极型晶体管测试方法》对IPM的一些主要参数的测试进行研究。对于此项研究,涉及到的学科领域较多,在技术上具有较大的挑战性。 本文所做的主要工作如下: (1)本文首先对变频技术及IPM相关理论知识做了介绍;在分析生成控制信号源的几种常用算法基础上,基于实时控制以及有利于DSP的实现这二点的考虑,选择了对称规则采样法产生SPWM(Sine Pulse Width Modulation),然后通过分析各参数(载波比、基频、调制系数)对SPWM谐波的影响来选择适合的波形作为控制信号源,使输出谐波尽量小。这样有利于输出电压、电流等参数的实时检测。 (2)在介绍数字信号处理器结构特点及其开发环境的基础上采用数字信号处理器TMS320F240生成控制信号源来驱动IPM,然后利用DSP高速的运算能力,采用混合查表插值法来实时计算产生SPWM,实现用很小的存储空间产生输出频率和调制比可任意改变的SPWM波,且方便在线调试。文中对TMS320F240与IPM的接口及保护电路的设计也做了详细的阐述。 (3)数据采集系统是本文论述的重点之一。本文采集系统分二步:对三相电压、电流以及IPM的温度等参数进行数据采集是由DSP内部的A/D转换模块实现;而开关特性的采集则采用超高速数据采集卡AC1030来完成。然后在此基础上,设计一个IPM检测系统并对其主要参数的测试进行了探讨。 (4)本文最后对测试系统的改进和可持续研究从以下四个方面做了简单介绍:不同控制信号源的比较、测试平台的拓宽、结合电机特性的研究、系统的实时性和高速性。更多还原

【Abstract】 IPM (Intelligent Power Module) is a kind of advanced integrated device, which is composed of high-speed and low-power IGBT (Insulated-Gate Bipolar Transistor) chips, optimized gate drivers and protect circuits.Compared with other power modules, IPM can simplify reduce the size of hard circuits, increase its reliability and shorten developping period.Based on these advantages, IPM has been applied to frequency conversion domain.The IPM capability parameters are the main indexs to measure the capability of frequency conversion of the production. Therefore, it has advantages to test its capability parameters. But because the categories of the parameters which need to be tested are numerous, and some of which are hard to be calculate. Therefore, the related researches on the test of the IPM are limited. We study the test of main parameters of IPM, referring to national technical supervisory office 《a method of test Insulated-Gate Bipolar Transistor》 .We should study many subjects and fields relating to this, which is a great challenge to us.The main work of the dissertation are summarized as follows:Firstly, we introduced the technique of frequency conversion and its theories on IPM; after analysised several arithmetics of control signal source, we choose symmetry rule sampling produce SPWM which is the base of both the real-time control and advantage to realize the DSP, and then analysised the influence of several parameters ( for example: modulate wave frequency carrier wave frequency modulate ratio) of SPWM wave’s harmonic for choose best source for control signal and to minimize harmonic i.e. favor of real-time detecting output voltage and current etc.Secondly, We have introduced the configuration and characteristic of DSP, using TMS320F240 gate to make SPWM which drives IPM, and also adopted a real -time SPWM calculational methods used a combination of lookup-table and its interpolation based on DSP, the contradiction between on-the-line changes SPWM frequency and memory can be overcomed in this way.The interface and protect circuit of design between TMS320F240 and IPM was explained in detail.Thirdly,data sampling system was well explained as one of the particular important parts in this paper, in the system we introduce three phase of voltage, current and temperature etc.of IPM which was sampled by utilizing A/D conversionconversion in DSP as far as sampled switch characteristic, we adopted exceed high speed chip of AC 1030.Then, designed the test system of IPM and discussed the test of main parameters of IPM.Finaly, We simply introduced how to improve and persist the research of test system.There are mainly four directions: different control signal sources different testing way research on system combining with motor’s characteristic improvement of test system’s real-time and speed.更多还原