Doubly salient generator voltage adjusting and controlling method

The invention relates to a doubly salient generator voltage adjusting and controlling method. The doubly salient generator voltage adjusting and controlling device comprises a doubly salient generator, an alternating current and direct current converting circuit and an excitation regulator; the alternating current and direct current converting circuit and the excitation regulator are respectively connected with the doubly salient generator electrically; the alternating current and direct current converting circuit is electrically connected with the excitation regulator. Concrete adjusting steps comprise constructing a first-order linear sliding mode surface equation S with output current and voltage deviation of the doubly salient generator and differential coefficients and integration of the output current and voltage deviation serving as independent state variables, calculating output of the sliding mode surface equation S in real time, intersecting with triangular carrier waves generated by a DSP (Digital Signal Processing) microprocessor, obtaining on-off signals of a switch tube Q2 of the excitation regulator and accordingly adjusting excitation currents and enabling the output current and voltage of the generator to be adjusted and stabilized. The doubly salient generator voltage adjusting and controlling method can overcome the disadvantage that the electricity generation performance of a generator system is reduced due to structural parameter variation after long-time operation and improves the generator dynamic response.