Speed regulating and inverting controller for generating set

Abstract

The invention discloses a speed regulating and inverting controller for a generating set. The controller comprises two main parts, namely, an engine speed regulating control circuit and a generator outputting and inverting control circuit. The engine speed regulating control circuit comprises rotating speed signal detection and speed regulating driving which are connected with a PICS18F series microprocessor respectively, the generator outputting and inverting control circuit comprises a direct current bus constant voltage circuit and an SPWM inverting circuit, the input end of the direct current bus constant voltage circuit is connected with the generator, the direct current output end is connected with the inverting main circuit of the SPWM inverting circuit, and the SPWM inverting circuit is connected with I/O of the PICS18F series microprocessor, thus forming a control circuit driven by an inverter. The controller realizes the stability and energy-saving running of the generating set and can ensure that the quality of the output power frequency alternating current reaches G3 grade demands regulated in GB/T2820.

Description

technical field [0001] The invention relates to the control field of internal combustion generating sets, in particular to a speed-regulating inverter controller for an inverter generating set adopting a non-sinusoidal generator. Background technique [0002] In recent years, with the use of high-frequency rare earth permanent magnet generators in the field of small internal combustion generator sets, the matching applications of inverter controllers and generator sets have gradually increased. Existing inverters mostly use dedicated integrated chips or analog circuits to realize the synthesis of SPWM waveforms. Either the sine degree of the output voltage waveform is poor, the power quality is not high, or the precision of the voltage feedback loop is not enough, and the short-circuit protection is not sensitive enough. The interference ability is poor and there are problems such as temperature drift. The technical route adopted by most inverters for generator sets is tran...

AI Technical Summary

Problems solved by technology

Existing inverters mostly use special integrated chips or analog circuits to realize the synthesis of SPWM waveforms. Either the sine degree of the output voltage waveform is poor, the power quality is not high, or the precision of the voltage feedback loop is not enough, and the short-circuit protection is not sensitive enough. Poor interference ability and problems such as temperature drift

The technical route adopted by most inverters for generator sets is transformed from the technology used in traditional inverter power supplies, and there is no special design for the specific characteristics of generator sets, such as linking the load size with the engine speed to design a more energy-saving , low-noise products, etc.

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