Gasoline engine parallel rectification and voltage regulation control circuit

Abstract

A parallel rectification and voltage regulation control circuit of a gasoline engine comprises a power circuit module (1) and a control circuit module (2), wherein the output end of the power circuit module (1) is connected with the input end of the control circuit module (2), the output end of the control circuit module (2) is connected with a control end of the power circuit module (1), the power circuit module (1) comprises a first power circuit (3) and a second power circuit (4), and the output end of the first power circuit (3) and the output end of the second power circuit (4) are connected in parallel. The parallel rectification and voltage regulation control circuit has the advantages that: 1, the control circuit is wide in application range, is suitably used for a coil below 1KW and is almost suitably used for rectification requirements of all models of gasoline engines; and 2, the loop current of two silicon controlled rectifier bridges is smaller than 100mA. Therefore, the control circuit adopts an operational amplifier to compare current acquisition signals, a control signal can be rapidly turned over, and the purpose of accurately controlling the current is achieved.

Description

technical field [0001] The invention relates to the field of gasoline engine circuits, in particular to a gasoline engine parallel rectification and voltage regulation control circuit. Background technique [0002] At present, the AC power output by the single-winding coil of the gasoline engine is basically converted into DC power by using a bridge stack composed of power devices for rectification (if it is a double-winding coil, the windings will be connected in parallel before rectification). For coils with higher power, if the above-mentioned method is still used for rectification, the power of the devices constituting the bridge stack must be required to be greater. As we all know, the price of the device will increase exponentially with the increase of power, so the cost of the product will rise significantly. Another method is to use an open power supply circuit to realize DC conversion, but the cost will be higher. Theoretically, for coils with high power, the most...

AI Technical Summary

Problems solved by technology

Because a single coil is rectified, the device power required for rectification can be greatly reduced, and the cost will also be greatly reduced. It seems feasible in theory, but in practice, we cannot directly connect all rectified and regulated DC voltages in parallel to achieve total power output

Because the output voltage of different rectifier and voltage regulating circuits will always have a voltage difference, and the voltage difference will cause circulating current, which is very likely to burn the power device of the rectifier circuit, so the rectifier circuit is not allowed to run directly in parallel

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