초록 ▼

In a driving system comprising a permanent magnet type synchronous machine, an electric power converter for the synchronous machine and a driving controller for driving the electric power converter, the driving controller comprises a current command generator for generating a d-axis current command

In a driving system comprising a permanent magnet type synchronous machine, an electric power converter for the synchronous machine and a driving controller for driving the electric power converter, the driving controller comprises a current command generator for generating a d-axis current command and a q-axis current command of the synchronous machine, a d, q-axis current control uni for generating AC voltage command values Vu*, Vv* and Vw* based on the d-, q-axis currents from the synchronous machines, and a PWM control unit for generating driving signals for the electric power converter based on the AC voltage command values. A phase generator generates a phase signal from zero-cross point information of the AC voltage command values and a phase difference angle .delta. between induced voltage and terminal voltage of the synchronous machine; and a magnet temperature compensating unit generates a phase signal from zero-cross point information of the AC voltage command values and a phase difference angle .delta. of a .delta.-table storing phase difference angles .delta. between induced voltage and terminal voltage of the synchronous machine. The phase difference angle .delta. is compensated based on a magnet temperature.

대표청구항 ▼

[ What is claimed is:] [1.] A driving arrangement for a permanent magnet type synchronous machine system for propelling a vehicle, said machine system having a synchronous motor, a permanent magnet type generator and a battery as main electric power sources, and an electric power converter coupled t

[ What is claimed is:] [1.] A driving arrangement for a permanent magnet type synchronous machine system for propelling a vehicle, said machine system having a synchronous motor, a permanent magnet type generator and a battery as main electric power sources, and an electric power converter coupled to said generator and to said battery for providing electric power to drive said synchronous motor, said driving system comprising:a current command generator for generating a d-axis current command and a q-axis current command for said synchronous machine system;a d, q-axis current control unit for generating AC voltage command values Vu*, Vv* and Vw* based on the d, q-axis current commands and detected values of d, q-axis currents from said synchronous machine svstem;a PWM control unit for generating driving signals for said electric power converter based on said AC voltage command values;a phase generating unit for generating a phase signal from zero-cross point information of said AC voltage command values and a phase difference angle .delta. between induced voltage and terminal voltage of said synchronous machine; anda magnet temperature compensating unit for compensating said phase difference angle .delta. depending on magnet temperature rise of said permanent magnet type synchronous machines.