%=== X Y Z calculation=== X = sqrt(3)*Vbeta*Tpwm/Udc; Y = Tpwm/Udc*(3/2*Valpha+sqrt(3)/2*Vbeta); Z = Tpwm/Udc*(-3/2*Valpha+sqrt(3)/2*Vbeta); %===Duty ratio calculation=== switch (sector) case 1 T1 = Z; T2 = Y; case 2 T1 = Y; T2 = -X; case 3 T...
Time Calculation 模块 mosfet transter time 模块 PWM output 模块 当合成电压矢量的角度为45°时,进行仿真计算,得到以下结果: 仿真结果 其他5个扇区的脉宽调制模块可以以相同方法得到: 模块示例 SVPWM模块中根据扇形判断模块得到扇区ID,再根据各个扇区的脉宽调制模块得到mosfet开关工作的时间: SVPWM模块 通过仿真得到脉...
4.2开关逻辑的实现如下图所示 functionpwm=fcn(Fs,Mag,ang,Sec,Vdc,clk)% Time synchronization with thesimulink clock.t=clk;% Vdc at workspace% General expression for the calculation of T1, T2 and T0.T1=(sqrt(3)*(Mag/Vdc))*sin(Sec*pi/3-ang)/Fs; T2=(sqrt(3)*(Mag/Vdc))*sin(ang -...
(On-time calculation) 扇区A的矢量组合,如下图所示: 由上图,我们可以总结出每个区域最邻近的三个作用矢量表,如下表所示: 这里,我们以区域(2)为例,计算各矢量导通时间Ta,Tb和Tc。 将上式中的实部与虚部分别表示列式,得到如下两个等式: 最后得到区域(2)中各矢量导通时间Ta,Tb和Tc,如下所示: 同理可以计算...
function [sys,x0,str,ts] = func_N_calculation(t,x,u,flag) %A=0;B=0; %C=0;N=0; global A B C N; switch flag, case 0, [sys,x0,str,ts]=mdlInitializeSizes; case 1, sys=[]; case 2, sys=[]; case 3, sys=mdlOutputs(t,x,u,A,B,C,N); ...
It fits for all over-modulation area and unites over-modulation calculation formulas with linear-modulation ones. In addition,it can keep proportionality between reference voltage and output fundamental phase voltage magnitude,provide maximum DC voltage utilization and maintain low output voltage total ...
Beijing 100044 ,China Abstract :After analyzing space vector pulse width modulation (SVPWM)principle and its natural over- modulation characteristic , it proposes a new over-modulation algorithm according to SVPWM implementation on DSP which reduces calculation effort while providing high control ...
function[sys,x0,str,ts] = func_N_calculation(t,x,u,flag) %A=0;B=0; %C=0;N=0; globalA B C N; switchflag, case0, [sys,x0,str,ts]=mdlInitializeSizes; case1, sys=[]; case2, sys=[]; case3, sys=mdlOutputs(t,x,u,A,B,C,N); ...
the thesis analyzes the working princigIles of traditional flux sinusoidal PWM control technique in detail.And the modulation wave functions are deduced.To simplify the calculation,an optimized simpler method is used to realize the digital algorithm.At the same time,the method of realization in over...
sinMapData < 0) SetInputB(false, true); else SetInputB(true, true); } void TB67H450Base::SetTwoCoilsCurrent(uint16_t _currentA_3300mAIn12Bits, uint16_t _currentB_3300mAIn12Bits) { /* * After SetFocCurrentVector calculation a 12bits value was mapped to 0~3300mA. * And due to ...