Parallel circuit for AC power generator

Abstract

The invention relates to a parallel circuit for an AC power generator, and the parallel circuit comprises a main power generator, a slave power generator, two parallel control modules, and an inverter bridge, wherein the parallel control modules are used for controlling the power supply of the two power generators through the adjustment of a reference voltage and a proportionality coefficient of proportional links. Each parallel control module comprises a diode power module, a comparison unit, the proportional links, a PWM generator, an IGBT switching tube, a capacitor C1, and a diode. The output ends of the two power generators are respectively connected with the input ends of the corresponding parallel control modules. The output ends of the parallel control modules of the two power generators are connected to one common branch current bus. Finally, a steady alternating current is outputted through the inverter bridge. The parallel control modules of the two power generators are the same, and there is not line between the parallel control modules of the two power generators. The parallel control modules of the two power generators are connected to the same DC bus. The parallel circuit can solve the problems that a conventional power generator is large in parallel ring current, is complex in operation and is not balanced in power distribution.

Description

technical field [0001] The invention relates to an alternator parallel circuit, in particular to a novel vehicle-mounted alternator parallel circuit. Background technique [0002] With the continuous development of society, the demand for special vehicles such as ambulance and emergency satellite communication is increasing day by day. With the continuous progress of science and technology, more and more high-power equipment is applied to these special vehicles. Can not meet the actual power demand. Although diesel generator sets can meet the needs of users for high power, they are bulky at the same power level and have serious noise pollution, so they are not suitable for some specific workplaces. However, the existing generator parallel technology is all parallel connection on the output side of the generator. This kind of parallel connection must require that the output voltage amplitude, frequency, phase and phase sequence of the two generators are completely consistent...

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is: to overcome the deficiencies in the prior art, a new vehicle-mounted alternator parallel circuit is designed, in the case of no diesel generator set, two alternators are connected in parallel on the side of the DC bus, It not only solves the problem of circulating current and complex control caused by traditional parallel connection, but also provides users with high-power, reliable and stable AC power.

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