One confusion of measured MOSFET current under SVPWM control in Simulink

One confusion of measured MOSFET current under SVPWM control in Simulink.

The simulink circuit of one half bridge is shown as below:

After running the simulation , i measured the MOSFET current within a random PWM period. A brief summary is shown as below:

Confusion 1:

For instance, when the switching state of the three-phase upper Mos changes from 111 to 110, within the beginning 1us , the current state of each mos remains basically unchanged. Why does it remain unchanged? Considering the continuation of the current, if the continuation of the current is to be carried out during this 1us, personally, it should start from the diode of Lpow side MOS of phase A.

Confusion 2:

When transitioning from state 110 to 010, after about 0.93us, the current in the LS MOS of phase A is -45.4A,it's a negative current If the continuation stage of current has been completed by now, the current in the Low side Mos of phase A should be from D to S, which should be a positive current.

Answer 1

[Sabin]

If you have inductive load, that will resist sudden changes in current. Therefore, the current can remain almost unchanged for a short period of time after a switching event.

A negative current in the LS MOSFET indicates that the current flows from S to D. This suggests that freewheeling is occurring through the body diode. The sign of the current reflects the direction determined by the load and previous switching state.