CN201601646U - Parallel operation control circuit of generator - Google Patents
Parallel operation control circuit of generator Download PDFInfo
- Publication number
- CN201601646U CN201601646U CN2010201204963U CN201020120496U CN201601646U CN 201601646 U CN201601646 U CN 201601646U CN 2010201204963 U CN2010201204963 U CN 2010201204963U CN 201020120496 U CN201020120496 U CN 201020120496U CN 201601646 U CN201601646 U CN 201601646U
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- generator
- circuit
- parallel operation
- control circuit
- operation control
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- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model discloses a parallel operation control circuit of a generator. The parallel operation control circuit comprises a node weighting circuit formed by the mutual parallel connection of two or more generator directional circuits. After parallel connection, the output end of the generator directional circuit is connected to a node of the node weighting circuit to form a current input end of the node, while a current output end thereof is connected to a total load and forms a loop with the node weighting circuit. The control circuit is simple, high in reliability, rather lower in cost, and stable in output and is not influenced by environment and field.
Description
Technical field
The utility model relates to electrical generator fields, relates in particular to a kind of parallel operation control circuit of electric generator.
Background technology
When the generator powering load, bearing power may appear much larger than single generator power, and cause generator power not enough, can't drive the situation of load.In this case, common solution is with many generating sets powering load altogether, is referred to as " generator parallel operation ".In the prior art, the condition of generator parallel operation is relatively stricter, and for the DC generator parallel operation, the output voltage of every generator must be identical; For the alternating current generator parallel operation, the output voltage that must satisfy every generator equates with frequency, phase place is identical.Fig. 1 and Fig. 2 show a kind of control circuit block diagram of DC generator parallel operation and alternating current generator parallel operation respectively.As shown in Figure 1, in DC generator, many generator parallel operation are the output voltages that come two above generators of balance by the electric current (magnetic field intensity) of control " excitation winding ", each generator voltage is equated, its control circuit is as a reference or each other with reference to (this needs more complicated control circuit) with generating voltage wherein; As shown in Figure 2, in alternating current generator, the parallel operation of many generators must be provided with circuit such as frequency, phase place, output control at its output, and its circuit is more complicated.
Thereby, be that direct current or alternating current generator parallel operation exist all that auxiliary device is many, circuit is complicated, the cost height, reliability is low, causes exporting problem of unstable.
The utility model content
Technical problem to be solved in the utility model is: a kind of parallel operation control circuit of electric generator is provided, and this circuit is simple, reliability is high, output is stable, can reduce cost significantly, and is not subjected to the environment site influence.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of parallel operation control circuit of electric generator, described parallel operation control circuit includes by two or more generator directional circuit node weighting circuit that forms parallel with one another, the output of the generator directional circuit after the described parallel connection is connected in a node of this node weighting circuit, form the current input terminal of this node, and its current output terminal is connected to total load, and forms the loop with described node weighting circuit.
The beneficial effects of the utility model are:
Embodiment of the present utility model utilizes the current node law of Kirchhoff's law to design a kind of node weighting circuit that gathers each branch current, thereby increased greatly the parallel operation control circuit reliability, reduced cost, simplified circuit, output is stable, is not subjected to the environment site influence.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Description of drawings
Fig. 1 is the circuit block diagram of existing DC generator parallel operation control circuit.
Fig. 2 is the circuit block diagram of existing alternating current generator parallel operation control circuit.
Fig. 3 is the circuit diagram of the embodiment of parallel operation control circuit of electric generator that provides of the utility model.
Fig. 4 is an equivalent circuit diagram of Kirchhoff's law.
Fig. 5 is the equivalent circuit diagram of the embodiment of parallel operation control circuit of electric generator that provides of the utility model.
Embodiment
Describe an embodiment of the parallel operation control circuit of electric generator that the utility model provides in detail below with reference to Fig. 3.Present embodiment mainly includes by two or more generator directional circuit node weighting circuit 1 that forms parallel with one another, the output of the generator directional circuit after the described parallel connection is connected in the node Q of this node weighting circuit, form the current input terminal of node Q, and its current output terminal is connected to total load R, and forms the loop with described node weighting circuit 1.
During specific implementation, described generator directional circuit include successively with generator E1 (E2 ... En) the partial pressure unit r1 of anodal series connection (r2 ... rn) and directed element 10.
During specific implementation, described bleeder mechanism be resistance less than resistance r1, the r2 of described total load R ... rn; Generator E1, E2 ... En can be the DC generator of two-wire system, also can be the alternating current generator of three-wire system or three-phase four-wire system; And the storage battery that total load R can be direct-flow current consumer, AC electric appliance or is recharged; Can AC-DC circuit or DC-AC circuit be set according to concrete needs between node weighting circuit 1 and the total load R.
When generator E1, E2 ... when En is alternating current generator, partial pressure unit r1 (r2 ... rn) and generator E1 (E2 ... En) also current rectifying and wave filtering circuit can be set as required between the output.
Describe the realization principle of present embodiment below in detail.
Being one of Kirchhoff's law and expanding and use of present embodiment.
Fig. 4 shows an equivalent electric circuit of Kirchhoff's law.Kirchhoff's law has been illustrated and has been flowed in the lumped circuit and flow out between each electric current of node and along the law of restriction relation between each section voltage in loop.The circuit of the maximum linear dimension that lumped circuit refers to circuit itself wavelength of curtage in the circuit, on the contrary then be distributed circuit.Kirchhoff's law comprises current law and voltage law.Present embodiment is based on the application of its current law.
Its current law claims node current law (KCL) again, the arbitrary node in arbitrary lumped circuit, and the algebraical sum perseverance that flows out all electric currents of (inflow) this node in a flash in office is zero.
Promptly arbitrary node is had: ∑ i=0.
According to this law, in circuit as shown in Figure 3, generator E1, E2 ... En can be the DC generator of two-wire system, also can be the alternating current generator of three-wire system or three-phase four-wire system, total load R can be that direct current or AC electric appliance (can be passed through conversions such as DC-DC, DC-AC, to adapt to the requirement of electrical appliance), also can be the storage battery that is recharged.Generator E1, E2 ... the instantaneous voltage of En be respectively E1, E2 ... En for node Q, has:
∑I＝I1+I2+…+In。
Node weighting circuit 1 each voltages at nodes equates or approximately equal that promptly E1 approximates E2 ... approximate En.A condition is arranged here, is exactly that total load R resistance is very little, i.e. load is very heavy, and bearing power is much larger than the power of single generator.Such as load is 2 kilowatts, and the separate unit generator is 1 kilowatt, at this moment, if, then be with not dynamic load with a generator, because: i1=E1/R, electric current are very big, and E1 is forced to drag down; If, just can drive load with two generators.Many parallel operation can be analogized in view of the above.If the gross power of the power of total load R after many parallel operation, as 5 generator parallel operation, be that power after its parallel operation is 5 kilowatts, and total load R has only 1 kilowatt, then divide the consumed power of every generator equally and have only 0.2 kilowatt, 1/5 the when electric current of dividing every generator equally has only separate unit to drive.It should be noted that not to be that every many also generator loading power will be twice, in fact, bearing power is constant, and what changed is to drive more powerful load.
The effect of directed element 10 is that the electric current of its place branch road is flowed out towards a direction, and during specific implementation, it can adopt diode or controlled circuit.
Fig. 5 shows the weighting circuit of the equivalence of present embodiment, wherein q1, q2 ... qn is the electromotive force from each generator.
The parallel operation control circuit of electric generator of present embodiment compared with prior art, do not need alternator output voltage, frequency, phase place etc. strictly to equate, thereby simplified circuit design widely, reduced cost, improved the reliability of circuit, make circuit output more stable, and be not subjected to the influence in environment place.
The above is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection range of the present utility model.
Claims (7)
1. parallel operation control circuit of electric generator, it is characterized in that: described parallel operation control circuit includes by two or more generator directional circuit node weighting circuit that forms parallel with one another, the output of the generator directional circuit after the described parallel connection is connected in a node of this node weighting circuit, form the current input terminal of this node, and its current output terminal is connected to total load, and forms the loop with described node weighting circuit.
2. parallel operation control circuit of electric generator as claimed in claim 1 is characterized in that: described generator directional circuit includes the partial pressure unit and the directed element of connecting with the generator positive pole successively.
3. parallel operation control circuit of electric generator as claimed in claim 2 is characterized in that: described directed element is unilateral diode or controlled circuit; Described partial pressure unit is the resistance of resistance less than described total load resistance.
4. as each described parallel operation control circuit of electric generator among the claim 1-3, it is characterized in that: described generator is DC generator or alternating current generator.
5. parallel operation control circuit of electric generator as claimed in claim 4 is characterized in that: described total load is at least a arbitrarily in direct-flow current consumer, AC electric appliance or the storage battery.
6. parallel operation control circuit of electric generator as claimed in claim 5 is characterized in that: also be provided with AC-DC circuit or DC-AC circuit between described node weighting circuit and the total load.
7. parallel operation control circuit of electric generator as claimed in claim 4 is characterized in that: also be provided with current rectifying and wave filtering circuit between described partial pressure unit and the generator output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201204963U CN201601646U (en) | 2010-01-26 | 2010-01-26 | Parallel operation control circuit of generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201204963U CN201601646U (en) | 2010-01-26 | 2010-01-26 | Parallel operation control circuit of generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201601646U true CN201601646U (en) | 2010-10-06 |
Family
ID=42812705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201204963U Expired - Fee Related CN201601646U (en) | 2010-01-26 | 2010-01-26 | Parallel operation control circuit of generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201601646U (en) |
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2010
- 2010-01-26 CN CN2010201204963U patent/CN201601646U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101006 Termination date: 20160126 |
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| EXPY | Termination of patent right or utility model |