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1. Principle of SVPWM
Space vector modulation index is limited to (√3)/2 but there is way to extend this limit with the over-modulation. This technique is required when the modulation index (the length of the reference space vector Us) exceeds the edges of the hexagon
1.1. Linear mode
In the linear area, V'cmd can keep both the amplitude and angle of Vcmd, then V'cmd=T'1*V1+T'2*V2 with T'1=T1 and T'2=T2
1.2. The detail OVM mode 1
1.3. The detail OVM mode 2
1.4. Example: F4 three shunt with Shinano motor at 4000rpm
