論壇里的各位同行朋友，你們好！我在用Saber仿三相逆變電路時(shí)，出現(xiàn)直流工作點(diǎn)仿真不通過的問題，請大家?guī)兔纯磫栴}在哪里，希望不吝賜教！謝謝！

出現(xiàn)如下問題！

thm failed. Trying the gmin_ramping algorithm.

The gmin_ramping algorithm failed. Trying the static_ramping algorithm.

The static_ramping algorithm failed. Trying the den_ramping algorithm.

Automatic algorithm selection exhausted

*** ERROR "ALG_SINGULAR_JACOBIAN" *** Singular Jacobian matrix.

Some possible causes for a singular Jacobian matrix:

- Model operating outside of its intended region of operation.

- Node/subsystem with no connection to the reference (floating).

- Current loops (voltage sources/inductors in parallel).

- Missing equation and/or missing variable reference.

Potential problem variables/equations:

/iam(ide_d2an.inv_l4_1_out)