Abstract:The generator voltage regulator is an indispensable part of maintaining the normal operation of the diesel unit, and it plays an important role in the safe and stable operation of the unit. At present, there are mainly two types of transistor-based analog voltage regulators and microprocessor-based digital voltage regulators. In view of the advantages that the digital voltage regulator has unmatched by the traditional analog voltage regulator, this paper designs a digital voltage regulator based on the TMS320F28335 chip for a certain type of vehicle diesel generator. The input and output interface circuit of the digital voltage regulator is designed, including the analog conditioning circuit, the digital conditioning circuit, the excitation main circuit and the excitation driving circuit, etc., to fabricate the power board. The DSP minimum system with TMS320F28335 as the core is adopted as the core controller, and the composite PID control algorithm is adopted by means of voltage and excitation current double loop adjustment. Set up a system experiment platform to test the regulator to meet the expected functional requirements.
