Unit start storage battery device for digital power generator system

Abstract

The invention discloses a unit start storage battery device for a digital power generator system. When the digital power generator system is started, a control method of the unit start storage battery device comprises the following steps that S1A, the unit start storage battery device supplies power to a power generator; S2A, the power generator is controlled by a machine side convertor to drag an internal combustion engine to be started; S3A, direct voltage is increased along with increase of the rotating speed of the power generator; S4A, whether the direct voltage is higher than battery voltage of the unit start storage battery device or not is judged, if the direct voltage is higher than battery voltage of the unit start storage battery device, the step S5A is executed, and if the direct voltage is not higher than battery voltage of the unit start storage battery device, the step S1A is repeatedly executed; and S5A, the unit start storage battery device stops power supplying to the power generator. By means of the digital power generator system, direct starting of the internal combustion engine is saved, a starting motor device in the traditional technology is saved, the size and cost of the digital power generator system are effectively reduced, and the control method of the unit start storage battery device is simple, convenient and easy to achieve.

Description

technical field [0001] The invention relates to the field of digital generators, relates to a digital generator system component, in particular to a unit starting storage battery device for 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 moto...

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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