A digital generator system

Abstract

The invention discloses a digital power generator system which comprises an internal combustion engine, a power generator, a direct current bus, an inverter, a filter and an output contactor which are sequentially connected. The digital power generator system achieves control through an MCU controller, the output contactor is connected with an external load, and a machine side convertor is connected between the power generator and the direct current bus; and a full-controlled device PWM power converter is adopted as the machine side convertor, the direct current bus is connected with a unit in parallel to start a storage battery device, the MCU controller controls components of the digital power generator system through a control method according to measurement signals. By means of the digital power generator system, direct starting of the internal combustion engine is achieved, a motor starting device in the traditional technology is saved, and the size and the cost of the digital power generator system are effectively reduced; meanwhile, in the normal power generating working mode, the running efficiency of the internal combustion engine and the running power factor of the power generator can be effectively improved by controlling the power generator, the control method is simple and convenient, and implementation is easy.

Description

technical field [0001] The invention relates to the field of digital generators, in particular to a digital generator system. Background technique [0002] The digital generator drives the generator through the internal combustion engine (such as gasoline engine, diesel engine) and then through the power electronic conversion output AC that meets the load voltage requirements (including voltage amplitude, frequency, harmonic distortion rate, etc.). Due to the high frequency of generator operation and the use of digital control technology, digital generators have the advantages of small size, light weight, and flexible use. They are widely used in emergency backup power, remote or temporary power supplies, etc. [0003] However, the internal combustion engine as the prime mover has no self-starting capability, and the traditional digital generator system must use a special starter motor device to start the unit, resulting in a large digital generator system and high cost. ...

AI Technical Summary

Problems solved by technology

[0003] However, the internal combustion engine as the prime mover has no self-starting capability, and the traditional digital generator system must use a special starter motor device to start the unit, resulting in a large digital generator system and high cost

[0004] In addition, the traditional digital generator uses a semi-controlled device thyristor rectifier or an uncontrolled device diode rectifier plus a DC / DC converter to control the output DC voltage of the generator, which has low power factor, large harmonics, poor dynamic performance and the inability to realize the internal combustion engine. Disadvantages such as optimal efficiency tracking operation control

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