Electric starting device and method

Abstract

The invention relates to the technical field of generator control, and provides an electric starting device capable of promoting an engine generator to be normally started without additionally increasing starting current, the electric starting device comprises an engine, a power generation part and a control part, and the control part comprises a control unit used for conducting a motor to enable a crankshaft to rotate forwards or conducting the motor to enable the crankshaft to rotate backwards; the storage unit is preset with the specified time of forward rotation of the motor and the fixed step number of reverse rotation of the crankshaft; the judging unit is used for obtaining the rotating speed after the crankshaft rotates forwards and judging whether starting succeeds or not according to the rotating speed within preset specified time, and if yes, the generator is started; and when the judgment unit judges that the starting is unsuccessful, the control unit is further used for controlling the motor crankshaft to rotate forwards after controlling the motor crankshaft to rotate reversely for a fixed step number, the judgment unit obtains the rotating speed of the motor again and judges whether the starting is successful or not, and the current starting cycle is stopped until the starting is judged to be successful.

Description

Technical field [0001] The present invention involves the field of generator control technology, which is specifically a electric startup device and method. Background technique [0002] With the increasing maturity of generator frequency conversion technology, the market popularization of frequency conversion generators has also become higher and higher. As a consistent function of improving the convenience of users, electric startups have become more and more demand. [0003] Traditional product electric startup uses a start -up motor scheme. Because the generator of the frequency conversion generator is permanent magnet motor, the actual role of starting the motor can actually be played during the startup stage. At present, an application for startup control is used to use a startup device. The wider; but due to the impact of the engine's own characteristics, the rotating torque required in the compression stroke is far greater than the torque required for other strokes, such ...

AI Technical Summary

Problems solved by technology

[0005] However, when the initial position of the engine is close to the compression top dead center position, especially in the structure without a sensor for detecting the crankshaft angle, the crankshaft rotates forward after the power is turned on. Because there is no moment of inertia to support, there may be a stall, and it is impossible to rush through the maximum The top dead center of the torque, as the current value rises sharply, the components may be damaged

However, in the existing known patent documents, when starting, the first current is first passed through to make the crankshaft reverse, and after a predetermined time, the second current larger than the first current is turned on again to make the crankshaft rotate forward. solution; because the first current value for driving the engine to reverse will vary with the difference of the engine, the same electric starter module cannot be compatible with all engine generator products, which also brings great confusion to the designer for design matching

Moreover, the scheme adopted in the patent No. CN201910092232.7, when the engine is initially at the top dead center position, there will be hidden dangers that both forward and reverse rotation cannot pass, resulting in the engine not being able to start normally and affecting the user's starting experience

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