电力电子技术的习题、重点及难点.doc

forming the Government, enterprises and the public forces and actively participate in, sharing a strong atmosphere. Comrades, do work in the countryside and five water treatment, three to split, is related to overall development, responsibility, task, departments at all levels must play more than spirit, do solid work, and difficult, and efforts to promote the work to a new level, South Gate of XX beauty to make new and greater contribution to the building! Research by the County, the County Government, the convening of this county, three, poverty and development, environmental protection, the main task is to 2016-these work arrangements. For a while, . . Gay also made an important speech, we must pay special attention to follow-up. The following, according to the citys plans and . . Comrade usual requirements of our work, I want to tell you three views: the first, on three last year, my County three has made certain achievements. Capital work is done using city funds . . Billion yuan, annual tasks . .%; only completion target . . Minutes, annual tasks . . rate, access to city-wide recruitment talent introduction . . Award recognized scientific and technological achievements . . , Cooperation of . . Innovation platforms . . Also complete tasks in the city. The overall three column in the city . . Name, did not enter the city in recognition of the results of this. This means we and other counties than there is room to continue the efforts. From each town in the County Street, allocusing on ways and means of improving and upgrading work, further development of three to split. (A) fully grasp no unauthorised created. The township no unauthorised created the existing building one household, one document survey and file storage work must be unconditional and full coverage. Main corridor leading to the town (road, river) village, the Central built-up area of the town on both sides must be to create a no unauthorised village. According to five hundred villages created and shanty towns, villages, old houses, reconstruction of old plant, expand create, upgrading creates files, the real no unauthorised village created into the benefit of the people of very good thing. (B) to strictly manage count as unauthorised controls. Promoting the new control work to move the center of gravity, management measures to the front, and earnestly pipes effectively. A strict new unauthorised network responsibility. Sectors such as land, housing and basic stations (stations) and the Township of grid accountability mechanisms must be strictly in accordance with the new regulatory requirements, effective implementation of the area of responsibility of the new inspections, suppression, demolition work to ensure that the new zero tolerance. Second, public security, water, electricity, water, oceans and fisheries, tourism collaboration, market supervision departments should strictly enforce the illegal construction of disposal of relevant provisions of the regulations, effective fulfilment of responsibilities, particularly in electricity and water supply, and other units may not be new illegal buildings to supply water and electricity supply. While more regulation to prevent personal privacy violations. Illicit trading in illegal construction in the Ministry of public security sector to strictly from the blow. Three is to create additional offence reporting system of incentives. According to building law and covers an area of nature, to report timely degree divided report grade, effective after the removal of certain incentives. (C) integrated implementation , building demolition, modification, use combination. Demolition is the means and purpose built is. To adhere to the building demolished, combination of construction and demolition waste, demolished with combined efforts to improve the scientific level of three to split; second, we must pay attention to three to split and five hundred and five water treatment, three of the four sides, the shackDistrict transformation, and dangerous old room transformation and two road sides, series work organic combined up, active do River, and along demolition work, and manpower advance village in the, and old residential demolition work, to improved masses housing conditions and live environment; three to put three modified a split as traditional low, and small, and bulk industry structure transformation upgrade of important initiatives to caught, speed up advance industry Park, effective optimization park environment电力电子技术的习题、重点及难点第一章 概述作业：1、电力电子技术定义是什么？它与电子学、电气工程、控制理论和电子学的关系是什么？2、电力电子变换有哪些基本类型？3、试分析电力电子技术的三大类应用领域的具体应用情况。4、试说明电力电子半导体器件发展中的第一代和第二代发展平台器件是哪两种？它们的中英文全称分别是什么？它们的英文缩写又是什么？5、试分析21世纪电力电子技术的前景重点和难点电力电子技术定义、它与其它学科的关系。电力电子变换的基本类型第二章 电力电子器件作业1、请分别说明功率MOSFET和IGBT的特点。2、在SCR、GTR、IGBT、GTO、MOSFET、IGCT及MCT器件中，哪些器件可以承受反向电压？哪些可以用作静态交流开关？3、试说明有关功率MOSFET驱动电路的特点。4、试分析线路杂散电感对自关断器件工作的影响。5、晶闸管的非正常导通方式有哪几种？6、请简述晶闸管的关断时间定义。7、请简述光控晶闸管的有关特征。8、电力电子器件的基本模型和分类是什么？9、电力电子器件的驱动与保护方法有哪些？重点和难点1、电力电子器件的基本模型和分类 2、电力电子器件指标和特性3、应用电力电子器件系统的组成4、电力电子器件的驱动和保护类型及原理 第三章 直流变换电路作业1、试述直流变换电路的工作原理。2、试述降压变换电路、升压变换电路和升降变换电路的工作原理。3、试述库克变换电路、Sepic斩波电路和Zeta斩波电路的工作原理。4、分析带隔离变压器的直流变换器的工作过程。5、简述复合斩波电路和多相多重斩波电路的工作原理。6、试述直流变换电路的PWM控制技术的基本原理。重点和难点1、各种直流变换电路的工作原理和它们的区别。2、掌握判断升压和降压斩波电路的方法。3、直流变换电路的PWM控制技术的基本原理。第四章 相控型整流和逆变电路(part1)作业1、 试述整流器的定义和分类2、整流器的性能指标有哪些？ 3、相控整流为什么要设置同步变压器？4、如何理解相控整流电路的换相压降？ 7、简述整流电路的谐波分析方法？8、有源逆变电路逆变的条件是什么？9、晶闸管相控电路的驱动控制的特点是什么？重点和难点1、相控整流电路的原理和分析方法？2、相控逆变电路的原理和分析方法？第四章 PWM型整流和逆变电路(part2)作业1、什么是PWM控制技术？2、简述PWM控制的基本原理。3、PWM跟踪控制技术有哪些？各有什么特点？4、简述PWM组成及其控制方法。重点和难点1、 PWM控制技术定义和基本原理。2、 PWM跟踪控制技术类型和特点。3、 PWM整流和逆变电路基本组成及其控制方法。第五章 逆变电路（综合）作业1、什么有源逆变和无源逆变？有什么区别？2、电力电子器件在工作时的换流方式有哪些？各有什么特点？各适用什么器件？3、简述电压型逆变电路和电流型逆变电路的区别？4、简述多重逆变电路多电平逆变电路特点。5、简述PWM逆变电路及其控制方法。重点和难点1、有源逆变和无源逆变的区别。2、电力电子器件换流方式的原理。4、 PWM逆变电路及其控制方法。第六章 交流变换电路作业1、交流变换电路分哪几类，如何区分？2、试述交流调功电路与交流调压电路的异同。3、交流电子开关的优点是什么？它与交流调功电路的区别是什么？4、交交变频与交直交变频各有什么优点和缺点？5、矩阵式交交变频的优势是什么？重点和难点1、交交变流电路的分类及其基本概念。2、单相交流调压电路的电路构成，在电阻负载和电感负载时的工作原理和电路特性。3、三相交流调压电路的基本构成和基本原理。4、交流调功电路和交流电力开关的基本概念。5、各种交交变流电路的主要应用。6、矩阵式交交变频电路的基本概念。第七章 软开关技术作业1、软开关的基本概念是什么？它与硬开关有什么区别？2、软开关如何分类？软开关应用范围？3、典型的软开关电路有哪些？重点和难点1、软开关应用范围，如何分类。2、典型的软开关电路原理和应用。第八章 电力电子装置(组合变流电路)作业什么是组合变流电路？UPS电源有哪几种结构？基本工作原理是什么？常用的高频开关电源有哪些结构？简述它们基本工作原理。有源功率因数校正电路（PFC）与一般开关电源的区别是什么？与无源校正抑制谐波的区别是什么？静止无功补偿装置（SVC）分为几大类？它们各有什么特点？变频调速装置有哪几路基本控制方式？它们各有什么特点？重点和难点1、间接交流变流电路可分为电压型和电流型，掌握它们的各种构成方式及特点2、交直交变频器与交流电机构成变频调速系统，重点理解恒压频比控制方法，并了解转差频率控制、矢量控制、直接转矩控制等其他控制方法：3、CVCF变流电路主要用于UPS，掌握其基本构成方式，特点及主电路结构。4、掌握间接直流变换电路中的能量转换过程为直流交流直流，交流环节含有变压器。第九章 现代电力电子控制技术基础作业1、试说明PWM控制方式分为哪几大类？2、试说明SPWM的中英文全称是什么，分析它的基本控制思想。3、试说明SVPWM的中英文全称是什么，分析它的基本控制思想。4、试分析自然采样和规则采样PWM的不同之处。5、试分析对称和不对称规则采样PWM的不同之处。6、试证明坐标变换矩阵C是正交矩阵，即有。7、如果d 轴相位角为，三相电流表达式为试求电流空间矢量的d 轴和q轴分量。8、为什么说新的通用瞬时功率理论包含了传统的基于周期平均值的功率定义呢？试分析其理由。9、在电力电子数字控制系统中，选择高集成度的微控制器产品有什么优点？10、在电力电子数字控制系统中，CPLD 的作用是什么？11、试比较分析TMS320F2812 与ADSP21992 两种电机控制专用DSP芯片的特点。12、试分析选择运算放大器的原则。重点和难点1、掌握PWM控制技术的类型及其工作原理。2、掌握空间矢量和坐标变换原理3、了解通用瞬时功率理论4、电力电子数字控制结构5、了解微控制器（MCU）、数字信号处理器（DSP）、复杂可编程逻辑器件（CPLD）在电力电子技术中的基本应用。5、 在电力电子技术中运算放大器的选择原则及其常用的运放电路第十章 电力电子系统可靠性概述作业1、试说明可靠性的概念。2、试说明常用的可靠性指标有哪几个？各代表什么含义？3、试说明电磁兼容的含义。4、试说明在电力电子系统中的电磁兼容具有什么固有的特点？重点和难点1、掌握可靠性的基本概念2、了解常用的可靠性指标3、了解电磁兼容性的特点所有进场钢材，挂有标牌，牌上印有厂标、钢号、炉罐（批）号、直径等标记并附有质量证明书；无质量证明书，不得入库；经检验合格后物资设备部方可收货，如发现不合格钢材，不得验收入库。合格钢材应分批验收入库。forming the Government, enterprises and the public forces and actively participate in, sharing a strong atmosphere. Comrades, do work in the countryside and five water treatment, three to split, is related to overall development, responsibility, task, departments at all levels must play more than spirit, do solid work, and difficult, and efforts to promote the work to a new level, South Gate of XX beauty to make new and greater contribution to the building! Research by the County, the County Government, the convening of this county, three, poverty and development, environmental protection, the main task is to 2016-these work arrangements. For a while, . . Gay also made an important speech, we must pay special attention to follow-up. The following, according to the citys plans and . . Comrade usual requirements of our work, I want to tell you three views: the first, on three last year, my County three has made certain achievements. Capital work is done using city funds . . Billion yuan, annual tasks . .%; only completion target . . Minutes, annual tasks . . rate, access to city-wide recruitment talent introduction . . Award recognized scientific and technological achievements . . , Cooperation of . . Innovation platforms . . Also complete tasks in the city. The overall three column in the city . . Name, did not enter the city in recognition of the results of this. This means we and other counties than there is room to continue the efforts. From each town in the County Street, alland improve idle land of utilization, real achieved environment improved and productivity development mutual promoting total win. Five, firmly implement, promoting work ahead, to create highlights. Third deployment, implementation of seven, then it is imperative to strengthen responsibility and improve the mechanisms and implementation. All localities and departments must be convinced that goals, going all out, mustering spirit, work together to ensure that this years objectives carry out tasks, at the forefront. First, we must strengthen the leadership to implement. Departments at all levels should always work and rural five water treatment, three to split in an important position, and carry the main responsibility, main leader personally, leaders arrested and layers of responsibility rank transmission pressure established hierarchical accountability, and work together to promote the work of the mechanism, a concerted effort pay attention to implementation. County nongban, flood, three to one down to further play a leading catch total, integrated and coordinated role of all kinds is long, Sheriff Inspector to effectively fulfill their responsibilities, formed the alignment on the fire line and management a lively situation. Second, we must strengthen the test implementation of the Governor. Role play the Governor got the baton, for agricultural and rural focus and five water treatment, three to split work, refine improve assessment methods and evaluation system, accurate assessment. Combined with dare play, tree benchmark style building five major operations, carry on and gain firsthand experience of supervision, in particular, to strengthen the focus on the long signs go left, names such as supervision, urged all levels longer on duty in place. Through the s