Electricity: single generator systems – Generator control – With excitation winding and/or circuit control
Patent
1984-01-27
1986-04-08
Hickey, R. J.
Electricity: single generator systems
Generator control
With excitation winding and/or circuit control
320 61, 320 67, 322 2R, 322 60, H02J 714, H02P 910
Patent
active
045815720
DESCRIPTION:
BRIEF SUMMARY
CROSS REFERENCE TO OTHER APPLICATIONS
Reference is made to co-pending applications of the same inventors as the present application, namely Ser. Nos. 576,387 and 576,390.
FIELD OF TECHNOLOGY
The present invention relates to an alternating current generator for a car for charging a battery.
BACKGROUND OF TECHNOLOGY
FIG. 1 is a circuit diagram showing an embodiment of the conventional alternating current generator for a car. In the figure, the reference nuemral 1 designates an armature coil having a three phase connection for generating an alternating current output and the numeral 2 designates a field coil, these parts constituting a three phase alternating current generator. The reference numeral 3 designates a main rectifying device for rectifying the alternating current output of the armature coil 1; the numeral 4 designates an auxiliary rectifying device for rectifying the alternating current output of the armature coil 1; the numeral 5 designates a voltage controlling device which turns on and off an exciting current passing to the field coil 2; the numeral 6 designates a key-switch; the numeral 7 designates a charge lamp connected to the key-switch 6 in series; and the numeral 8 designates a battery.
The positive side of the battery 8 charged by the output of the main rectifying device 3 is connected to the voltage controlling device 5 through a serial connection of the key-switch 6, a charge lamp 7 and the field coil 2. The output of the auxiliary rectifying device 4 is, on one hand, connected to the voltage controlling device 5 and is, on the other hand, connected to the voltage controlling device 5 through the field coil 2.
The operation of the circuit constructed as above-mentioned will be described.
First of all, when the key-switch 6 is closed, an exciting current is passed to the field coil 2 through a circuit of the positive (+) side of battery 8--key-switch 6--charge lamp 7--field coil 2--voltage controlling device 5--negative (-) side of battery 8. After this, when an engine is actuated for revolution whereby the terminal voltage of the generator increases, an exciting current is supplied from the auxiliary rectifying device 4 to the field coil 2 and the generator starts to generate power as a self-excited generator.
In such alternating current generator constructed as above-mentioned, however, a part of an output current is consumed as an exciting current to cause reduction in output from the exciting current corresponding to about ten percent of the output current of the generator and to cause consumption of excessive power of the engine disadvantageously.
SUMMARY OF THE INVENTION
In the present invention, an exciting current is supplied from a power soure other than a battery so as to constitute a generator as a separately excited generator whereby for instance, ten percent increase of an output current can be obtained even though the size of the generator is the same as the conventional one.
In the present invention, a generator is miniaturized and efficiency of the generator is improved by feeding an exciting current for a field coil from a solar battery which does not require power of an engine.
Further, in the present invention, an exciting current for a field coil is obtained by a piezoelectric element for converting vibration of an engine into electrical power so that the vibration of the engine is effectively utilized to improve efficiency of a generator.
The present invention is further advantageous from the view that efficiency of a generator can be advantageously improved by utilizing waste heat discharged from an engine in effective manner, without using any power of the engine, by providing an exciting means in which excitation of a field coil is carried out by a power source for separate excitation which performs heat-electricity conversion of the waste heat discharged from the engine so that a generator is used as a separately excited generator.
BRIEF DESCRIPTION OF DRAWING
FIG. 1 is a circuit diagram of the conventional alternating current generator for a car;
REFERENCES:
patent: 1118269 (1914-11-01), Creveling
patent: 3086161 (1963-04-01), Decarbo et al.
patent: 3246232 (1966-04-01), Langston et al.
patent: 3444946 (1969-05-01), Waterbury
patent: 3559027 (1971-01-01), Arsem
patent: 4301376 (1981-11-01), Ragaly
Akio Matsumoto
Mitsuyoshi Yokota
Yoshiyuki Iwaki
Hickey R. J.
Mitsubishi Denki & Kabushiki Kaisha
LandOfFree
Alternating current generator for a car does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Alternating current generator for a car, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Alternating current generator for a car will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2068269