1、ocusing 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 covera
2、ge. 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 c
3、reates 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 stri
4、ct 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 inspection
5、s, 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 regulati
6、ons, 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
7、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 implement
8、ation “, 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
9、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 vill
10、age 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, eff
11、ective optimization park environmentand 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 t
12、o 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 i
13、mplement. 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 accountabil
14、ity, 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
15、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 asse
16、ssment 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 a
17、ll levels longer on duty in place. Through the supervisory assessment, to promote habits, stimulating power. Third, we must strengthen implementation style. Departments at all levels to work in rural areas and “five water treatment“, “three to split“ as training cadres for major platforms, compete a
18、gainst large examination room, inspection cadres work performance of the ring, water control and the Japanese pulled a workout, training, discovery and selection of cadres. Than good catch up, first to excellence-oriented. Party members and cadres at all levels must adhere to the rural, water contro
19、l and the Japanese pulled a grass-roots, “put down the shelf, leaned“ pragmatic style, the spirit of play, become a benchmark model. Four, we must strengthen propaganda implementation. Comprehensive utilization of micro-credit, micro-blogging, new media, mining, summarizing, good publicity work in t
20、he countryside and “five water treatment“, “three to split“ advanced models, point to gather positive energy for the community to see the results of our work in time, increase public awareness, participation rates, satisfaction and support. Play gongqingfu, a mass organization and grass-roots such a
21、s schools, communityThe role of电电 力力 电电 子技子技 术术 的的 习题习题 、重点及 难难 点点第一章 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 M
22、OSFET 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。ocusing on ways and means of improving and upgrading work, further development of “three to split“. (A) fully grasp “no unauthorised
23、“ 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
24、 “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 c
25、ount 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 acc
26、ountability 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
27、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
28、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
29、 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 buildin
30、g 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 transforma
31、tion, 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 mod
32、ified 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 environmentand improve idle land of utilization, real achieved environment improved and productivity develo
33、pment 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 goa
34、ls, 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,
35、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, flo
36、od, 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 imple
37、mentation 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 opera
38、tions, 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 supervisory assessment, to promote habits, stimulating power. Third, we must strength
39、en implementation style. Departments at all levels to work in rural areas and “five water treatment“, “three to split“ as training cadres for major platforms, compete against large examination room, inspection cadres work performance of the ring, water control and the Japanese pulled a workout, trai
40、ning, discovery and selection of cadres. Than good catch up, first to excellence-oriented. Party members and cadres at all levels must adhere to the rural, water control and the Japanese pulled a grass-roots, “put down the shelf, leaned“ pragmatic style, the spirit of play, become a benchmark model.
41、 Four, we must strengthen propaganda implementation. Comprehensive utilization of micro-credit, micro-blogging, new media, mining, summarizing, good publicity work in the countryside and “five water treatment“, “three to split“ advanced models, point to gather positive energy for the community to se
42、e the results of our work in time, increase public awareness, participation rates, satisfaction and support. Play gongqingfu, a mass organization and grass-roots such as schools, communityThe role of7、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
43、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)ocusing on w
44、ays 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 cor
45、ridor 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
46、, 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 unaut
47、horised 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, suppressi
48、on, 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, effecti
49、ve 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, e
