现代电子技术
現代電子技術
현대전자기술
MODERN ELECTRONICS TECHNIQUE
2014年
20期
157-159,162
,共4页
CSI%FPGA%SVPWM%死区时间%双向TVS管
CSI%FPGA%SVPWM%死區時間%雙嚮TVS管
CSI%FPGA%SVPWM%사구시간%쌍향TVS관
CSI%FPGA%SVPWM%dead-time%bi-directional TVS
电流源逆变器（CSI）随着反阻断IGBT器件的成功开发，在电动汽车等大功率变频调速领域前景广大。FPGA作为控制器，其时序控制能力强大，适合用来实现基于电流型空间矢量脉宽调制（SVPWM）技术的永磁同步电机（PMSM）变频驱动器。该系统通过采用最小直流链电流命令产生法和合理的死区开关状态设置，有效减小直流和开关损耗。系统为应对开路故障引起直流链电感产生瞬间高压打坏开关器件的现象，设置由双向TVS管和功率电阻构成的电感电压箝位环节，并监测直流链电流值，一旦低于限值则实现保护性停机。实际系统使用Xilinx公司FPGA开发板，基于电流源逆变器转子参考框下交流侧的理论模型，建立了一套数字化闭环调速策略，实测定子电流THD值及功率因数均达到良好效果。
電流源逆變器（CSI）隨著反阻斷IGBT器件的成功開髮，在電動汽車等大功率變頻調速領域前景廣大。FPGA作為控製器，其時序控製能力彊大，適閤用來實現基于電流型空間矢量脈寬調製（SVPWM）技術的永磁同步電機（PMSM）變頻驅動器。該繫統通過採用最小直流鏈電流命令產生法和閤理的死區開關狀態設置，有效減小直流和開關損耗。繫統為應對開路故障引起直流鏈電感產生瞬間高壓打壞開關器件的現象，設置由雙嚮TVS管和功率電阻構成的電感電壓箝位環節，併鑑測直流鏈電流值，一旦低于限值則實現保護性停機。實際繫統使用Xilinx公司FPGA開髮闆，基于電流源逆變器轉子參攷框下交流側的理論模型，建立瞭一套數字化閉環調速策略，實測定子電流THD值及功率因數均達到良好效果。
전류원역변기（CSI）수착반조단IGBT기건적성공개발，재전동기차등대공솔변빈조속영역전경엄대。FPGA작위공제기，기시서공제능력강대，괄합용래실현기우전류형공간시량맥관조제（SVPWM）기술적영자동보전궤（PMSM）변빈구동기。해계통통과채용최소직류련전류명령산생법화합리적사구개관상태설치，유효감소직류화개관손모。계통위응대개로고장인기직류련전감산생순간고압타배개관기건적현상，설치유쌍향TVS관화공솔전조구성적전감전압겸위배절，병감측직류련전류치，일단저우한치칙실현보호성정궤。실제계통사용Xilinx공사FPGA개발판，기우전류원역변기전자삼고광하교류측적이론모형，건립료일투수자화폐배조속책략，실측정자전류THD치급공솔인수균체도량호효과。
With the successful development of RB-IGBT device,Current-source-inverter(CSI)has a broad prospect in the field of electric vehicles and other high power variable frequency speed adjusting areas. FPGA as a controller with powerful time-sequence control ling ability is suitable for PMSM variable frequency driver based on current type SVPWM technology. The sys-tem can reduce DC and switching loss by generating method of minimum DC link current command and rational dead zone on-off state setup. In the system,Bi-directional TVS and inductor voltage clamp link constructed by power resistor is set up to counter the phenomenon of switch device damage caused by transient high voltage produced by DC link inductance generated by open-circuit fault and to monitor the DC link current value. That is,if the DC link current is below the limit,the system protectively shuts off. The actual system is realized by using Xilinx FPGA board to build a close-loop control,which is based on the equiva-lent model of CSI’s AC side under rotor reference frame. The measured stator current THD value and power factor reached a good result.
