本文選題：六相同步風(fēng)力發(fā)電機(jī) + 矢量控制　； 參考：《高電壓技術(shù)》2014年11期

【摘要】：為了確定六相同步風(fēng)力發(fā)電系統(tǒng)最優(yōu)的調(diào)制策略,對(duì)參考電壓為正弦波情況下3種連續(xù)脈寬調(diào)制(PWM)策略的性能進(jìn)行了分析。對(duì)正弦脈寬調(diào)制(SPWM)、雙三相空間矢量脈寬調(diào)制(D3SVPWM)、最大四矢量六相空間矢量脈寬調(diào)制(6SVPWM)3種連續(xù)調(diào)制策略的開關(guān)電壓矢量分布與作用時(shí)間進(jìn)行分析,得到了單基波周期開關(guān)次數(shù)與最大調(diào)制比的性能對(duì)比結(jié)果;通過(guò)數(shù)值推導(dǎo)與圖論相結(jié)合的方式,對(duì)3種調(diào)制策略的電流脈動(dòng)特性進(jìn)行了對(duì)比分析。分析結(jié)果顯示,相同采樣頻率下,SPWM與D3SVPWM的開關(guān)頻率約為6SVPWM的1/2倍;D3SVPWM與6SVPWM的直流電壓利用率是SPWM的1.155倍;在2個(gè)平面等效電感比值kz1z2≤10的條件下D3SVPWM電流脈動(dòng)最小。綜合幾種性能分析結(jié)果可知,采用D3SVPWM的調(diào)制性能最優(yōu),仿真和實(shí)驗(yàn)結(jié)果也證實(shí)了分析結(jié)果的正確性。
[Abstract]:In order to determine the optimal modulation strategy of six-phase synchronous wind power system, the performance of three kinds of continuous pulse width modulation (PWM) strategies with reference voltage of sinusoidal wave is analyzed. The switching voltage distribution and operating time of three kinds of continuous modulation strategies: sinusoidal pulse width modulation (SPWM), double three-phase space vector pulse width modulation (D3SVPWM) and maximum four-vector six-phase space vector pulse width modulation (6SVPWMN) are analyzed. The results of comparison between the frequency of period switching and the maximum modulation ratio of single fundamental wave are obtained, and the current pulsation characteristics of three modulation strategies are compared and analyzed by the combination of numerical derivation and graph theory. The results show that the switching frequency of SPWM and D3SVPWM at the same sampling frequency is about 1 / 2 times of that of 6SVPWM, and the DC voltage utilization ratio of D3SVPWM and 6SVPWM is 1.155 times of that of 6SVPWM, and the current pulsation of D3SVPWM is minimum when two planar equivalent inductance ratios kz1z2 鈮，

本文編號(hào)：2028513