CN86106028A - Electrical power generator - Google Patents
Electrical power generator Download PDFInfo
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- CN86106028A CN86106028A CN 86106028 CN86106028A CN86106028A CN 86106028 A CN86106028 A CN 86106028A CN 86106028 CN86106028 CN 86106028 CN 86106028 A CN86106028 A CN 86106028A CN 86106028 A CN86106028 A CN 86106028A
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- alternating current
- output
- current generator
- generator
- capacitor
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- 239000003990 capacitor Substances 0.000 claims abstract description 38
- 238000004804 winding Methods 0.000 claims abstract description 28
- 230000000903 blocking effect Effects 0.000 claims abstract description 12
- 230000005284 excitation Effects 0.000 claims abstract description 3
- 238000003466 welding Methods 0.000 claims description 9
- 238000007600 charging Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
A kind of electrical power generator comprises: a belt-wheel-driven alternator, and it has three of delta connection output windings and a pair of rectifier is arranged respectively and each is exported winding and links; One by generator by the rectifier supplying electric current, and the voltage regulator of control supply generator excitation winding current; One voltage multiplying circuit, it comprises the first pair of series capacitor that is connected across in the generator output of rectification, first and second blocking diodes, its negative electrode all are connected to the negative pole through the generator output of rectification, are connected on second pair of series capacitor between two blocking diodes.Two of generator one output winding terminates between two pairs of series capacitors.
Description
The present invention relates to a kind of electric generator that is applicable to welding and operation electric tool.
A kind of device based on improved AC generator for vehicle has been proposed, wherein improved alternating current generator can or welding current is provided, a DC power supply perhaps is provided, perhaps provides electric current to charge and do conversion between these three kinds of situations to automobile batteries.For example the patent application NO.PCT/AU 84/00040(of Patent Cooperation Treaty (PCT) delivers with NO.WO 84/03599) a kind of power supply disclosed, wherein the output of threephase alternator is supplied to a capacitor and diode network, and this network is brought up to effective output voltage of alternating current generator can be enough to drive such as the such electric equipment of electric tool.In order to obtain desirable high output voltage (general 240 volts), adopted a complicated circuit with capacitor electrode bridge circuit, this bridge circuit has used 6 large value capacitors and 8 heavy-duty diodes.DC power supply as automobile batteries must be to this capacitor electric bridge.Except its complexity, the pattern of the existing this system in market can not be entirely satisfactory.Especially an effective high output voltage is tried hard to obtain by this system, has proposed this problem during the subminiature belt pulley of equipment in practice on alternating current generator, consequently can often damage the belt that is used for driving alternating current generator.But also find that this system can not be safely to the electric that is higher than three kilowatts, so when driving by this system, situation overheated and that other part damages in capacitance bridge, will occur such as the such high-power electric instrument of tilting grinder (angle grinder).
Electrical power generator according to the present invention comprises: one has three output windings of delta connection and the alternating current generator that the belt pulley a pair of and rectifier that each output winding links drives; A voltage regulator that is used to control alternating current generator output; With a capacitive voltage multiple circuit; To the electric current of voltage regulator supply through over commutation, the electric current of the excitation winding of alternating current generator is supplied with in voltage regulator control to alternator winding by rectifier; Voltage multiplying circuit comprises: the capacitor connected in series on the first pair of positive and negative electrode that is connected across the output of rectified alternating current generator; First blocking diode, its anode is connected to the positive pole of the output of rectified alternating current generator; Second blocking diode, its negative electrode are connected to the negative pole of rectified alternating current generator output; Second pair of capacitor connected in series that is connected between the first blocking diode negative electrode and the second blocking diode anode; Opposite two of one of alternating current generator output winding terminates between first pair and the second pair of capacitor connected in series.
Accompanying drawing is the principle sketch according to the electrical power generator of automobile engine driving of the present invention,
Consult accompanying drawing, improved AC generator for vehicle 10 has three of delta connection to export winding A, B and C.Winding A, B and C are connected to an internal rectifier device, and this device is included in 6 diode D1-D6 in the electric bridge, thereby the direct current output through over commutation of an all-wave can be provided.When the rotor R of alternating current generator was rotated with the operate as normal speed of its about per minute 7000 commentaries on classics, resulting peak value open circuit alternating voltage was approximately 60 volts on each output winding two ends.
Voltage regulator 12 is connected across on the D+ and D-two ends of rectifier unit.The rotor R of alternating current generator is supplied with in adjusted output from the DF end, be used for controlling the output of alternating current generator, 12 volts of battery pack 14 of a standard are connected across on the rectifier unit, and when switch 16 is in uppermost position among the figure, battery pack 14 is by the current charges from the over commutation of winding A, B and C, this position of switch is corresponding to the normal operation mode of the automobile that alternating current generator 10 is housed, it also has two other positions, can select to connect welding circuit 38 or connect voltage multiplying circuit 18 by these two positions.
The two ends of the output winding B of alternating current generator 10 connect respectively on the node and the node between capacitor 28 and 30 between capacitor 20 and 22.
The electrical power generator working method is as follows: supposition switch 16 is in the position shown in the figure, and automobile batteries group 14 and welding circuit 38 all disconnect, and voltage multiplying circuit 18 connects.When the rotor R of alternating current generator 10 is rotated, on each output winding A, B and C, all produce an alternating current waveform.At first consider winding A, nominally the positive half cycle of the waveform among the winding A makes capacitor 20 charge to the crest voltage of waveform by diode D3, then, " bearing " half cycle makes capacitor 22 charge to the negative peak voltage of waveform by diode D6.Because capacitor 20 and 22 is connected, so to the voltage at 20 and 22 two ends the crest voltage of the waveform of the alternating current among the winding A will be doubled in series capacitors, similarly, the alternating current waveform among the winding B make electricity cellar for storing things device 28 and 30 respectively by diode D3,24 and D6,26 charge to the positive and negative peak value of this waveform.Like this, make pair of series connect two times of crest voltage that capacitor 28 and 30 charges to this waveform by the alternating current waveform in winding B.
During first half cycle of the waveform in winding B, the voltage of the waveform among winding C and the B will be connected, this series voltage will make capacitor 28 chargings by diode 24, make effectively across the voltage of capacitor 28 2 ends and double, during the next half cycle of the waveform in winding B, capacitor 30 will be recharged by diode 26, and the voltage of its two end is doubled.Because capacitor 28 and 30 is connected, again because the voltage on each of this two capacitors is 2 times of voltage on capacitor 20 and 22, so two times of the voltage of capacitor 20 that whole voltages of the capacitor 28 of pair of series connection and 30 two ends are pair of series to be connected and 22 2 ends.This voltage will be 4 times of alternator voltage peak value.This at the high voltage of pair of series capacitor 28 and 30 upper ends because the blocking effect of diode 24 and 26 has avoided flowing back into circuit.
The actual output voltage that obtains on output 34 and 36 depends on the speed of rotor of characteristic, the especially alternating current generator of alternating current generator.Output voltage also will change according to the capacitance size that is connected in load value on output 34 and 36 and capacitor 20,22,28 and 30.
The described embodiment of evidence can provide gratifying high output voltage under than the quite low situation of prior-art devices rotor speed at its spinner velocity, and can extract quite high electric current from system and do not damage voltage multiplying circuit 18.Another advantage that described circuit is compared with prior-art devices is that two or more electrical power generator can be connected in parallel and improve the output current that obtains, and this point is impossible with the equipment of known systems.Described circuit is because other part of usefulness is less, so more more simple and economical than the circuit of prior art.
When switch 16 was in its as shown in the figure control position, the output of alternating current generator electric bridge directly connected welding circuit 38.The welding current that is obtained depends on characteristic and its spinner velocity of alternating current generator.For fear of must on the current channel of welding circuit, putting a high power switch, switch 16 can save, and second pair of blocking diode (shown in the frame of broken lines) can be connected in series between the corresponding both positive and negative polarity and voltage multiplying circuit 18 of alternating current generator output, and this can be avoided extracting too much electric current by capacitor 20 and 22 when welding.
Claims (5)
1, a kind of electrical power generator comprises: one has three output windings of delta connection and the alternating current generator that the belt pulley a pair of and rectifier that each output winding links drives; A voltage regulator that is used to control alternating current generator output; With a capacitive voltage multiplying circuit; To the electric current of voltage regulator supply through over commutation, the electric current of alternating current generator excitation winding is supplied with in voltage regulator control to the alternative electric generation winding by rectifier; It is characterized in that:
Voltage multiplying circuit comprises: first pair of capacitor connected in series, and this is connected across on the both positive and negative polarity that the alternating current generator of over commutation is exported capacitor; First blocking diode, its anode are connected in the positive pole through the alternating current generator output of rectification; With second blocking diode, its negative electrode is connected in the negative pole through the alternating current generator output of rectification; Second pair of capacitor connected in series is connected on respectively between the negative electrode and anode of first and second blocking diodes; Opposite two ends of an output winding of alternating current generator are connected in the middle of the corresponding capacitor of first and second pairs of capacitor connected in series.
2, electrical power generator according to claim 1 is characterized in that it comprises that an alternating current generator output through rectification is connected to voltage multiplying circuit, the device of welding circuit or battery resistance respectively.
3, electrical power generator according to claim 2 is characterized in that described device comprises a switch.
4,, it is characterized in that described device comprises the blocking diode that is connected between output of the alternating current generator of rectification and voltage multiplying circuit according to claim 2 or 3 described electrical power generators.
5,, it is characterized in that described alternating current generator is an automobile AC motor according to each described electrical power generator of claim 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86106028 CN86106028A (en) | 1986-09-12 | 1986-09-12 | Electrical power generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86106028 CN86106028A (en) | 1986-09-12 | 1986-09-12 | Electrical power generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86106028A true CN86106028A (en) | 1988-03-23 |
Family
ID=4803071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86106028 Withdrawn CN86106028A (en) | 1986-09-12 | 1986-09-12 | Electrical power generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86106028A (en) |
-
1986
- 1986-09-12 CN CN 86106028 patent/CN86106028A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |