Square wave combining excitation starter/ electric generator control method

Abstract

The invention relates to a starter / electric generator control method, in particular to a square wave combining excitation starter / electric generator control method, and belongs to the field of automobile engine starting / electric generating. A square wave combining excitation motor system comprises a square wave combining excitation motor (1), an excitation regulating unit (2), an inverter (3), an energy storing device (4) and a single-chip microcomputer control unit (5). When an engine sends a starting request, the square wave combining excitation motor (1) enters the starting mode, a speed controlling or torque controlling method is adopted in the starting mode, and the engine is started quickly. When a vehicle is driven normally, the square wave combining excitation motor (1) enters an electricity generating mode, the inverter (3) serves as an uncontrollable rectifier bridge, a voltage outer ring and exciting current inner ring control method is adopted, the air gas field is adjusted by regulating an exciting current, and the output voltage is stabilized.

Description

technical field [0001] The invention relates to a starter / generator control method, in particular to a square wave compound excitation starter / generator control method, which can be applied to the field of automobile engine start / generator. Background technique [0002] Hybrid electric vehicles have both the advantages of low emissions of electric vehicles and the advantages of high specific energy of internal combustion engine vehicles, and have attracted more and more attention. The integrated starter / generator is a key component of hybrid electric vehicles, which can realize the functions of idle stop and quick start of the engine, so as to achieve the purpose of saving fuel consumption and reducing emissions. [0003] The existing automobile integrated starter / generator adopts a variety of motor types, each with its own advantages and disadvantages. For example: claw pole electric excitation AC motor has good mechanical strength and simple structure, but the effective m...

AI Technical Summary

Problems solved by technology

The current compound excitation motors are mostly sinusoidal electromotive force motors, and there is still room for improvement in terms of starting torque and system cost

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