The invention provides a coordinated control method, a frequency converter, excitation equipment and a static variable frequency starting system. The static variable frequency starting system comprises the frequency converter, the excitation equipment, a monitoring system and synchronous grid-connected equipment. Coordinated control of the frequency converter and the excitation equipment can be realized, and different operation modes can be selected according to different operation conditions of the synchronous motor so that the operation mode is flexible, the operation range is wide and operation has high reliability. Before the first critical switching point of the synchronous motor, the frequency converter and the excitation equipment are independently controlled so that the interference of harmonic waves and other external clutters on the analog signals can be effectively reduced, the accuracy of excitation control can be enhanced and thus the success rate of commutation of the frequency converter in the pulse commutation phase can be enhanced. Besides, the control process is simple and clear, control is facilitated and the starting rate and the stability of the synchronous motor in the natural commutation phase can be enhanced.