CN201219210Y

CN201219210Y - Uninterrupted power supply control system of AC generator

Info

Publication number: CN201219210Y
Application number: CNU2008200887532U
Authority: CN
Inventors: 金剑杭
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-06-13
Filing date: 2008-06-13
Publication date: 2009-04-08
Anticipated expiration: 2018-06-13

Abstract

The utility model discloses an alternator uninterrupted power supply control system, including with a generator start-up and control module (1), a rectifier (2) and an inverter (3) connected to a main control module (5), wherein, the inverter (3) is also connected to the rectifier (2) and the output filter module (4); the control system also includes a battery control module (6), which is, respectively, connected to the main control module (5) and the inverter (3); and the output filter module (4) is connected to the main control module (5). By use of the alternator uninterrupted power supply control system, the utility model can achieve uninterrupted power supply to the loads.

Description

A kind of alternating current generator uninterrupted power supply control system

Technical field

The utility model relates to a kind of alternating current generator uninterrupted power supply control system.

Background technology

Along with the development of social economy, technology and the popularization and application of computer, people have proposed more and more stricter requirement to the quality of power supply; For example computer or other sensitiveness equipment, require electric power system to the power supply of load have continuously, performance reliably.At present, the effect of known (bavin, vapour) oily alternating current generator is at mains failure or there be not in the environment of civil power and can providing alternating current for load; It is according to the Faradic electricity magnetic induction principle, does a kind of device of cutting magnetic line movement and then generation electric energy in alternating magnetic fields by coil.

Fig. 1 has shown a kind of internal structure schematic diagram of existing digital alternating current generator control system, and it is started by generator and control module 1, rectifier 2, inverter 3, output filtration module 4 and main control module 5 are formed.In the real work, the generator startup all links to each other with alternating current generator with control module 1, rectifier 2; Output filtration module 4 links to each other with load, and also the while links to each other with AC power as civil power in load.When cutting off the power supply as the AC power of civil power, under the order of main control module 5, generator startup and control module 1 are opened the output voltage of alternating current generator and control alternating current generator, make the voltage of alternating current generator output after the rectification of rectifier 2 is handled, can reach 380V ± 20V, so just represent that alternating current generator starts successfully.After main control module 5 learns that from the output of rectifier 2 alternating current generator starts successfully, control rectifier 2 with the voltage of above-mentioned 380V ± 20V successively through the inversion of inverter 3 (inverter 3 is subjected to main control module 5 controls) handle and the Filtering Processing of output filtration module 4 after, the alternating current that becomes 220V ± 2% uses for load.

Owing to there is not storage battery to give inverter 3 power supplies, when the civil power outage, in the process that alternating current generator starts, its power supply to load is interrupted.The function that alternating current generator on the therefore present market does not interrupt electric zero.

In the market, generally want to utilize generating set to become the alternating current generator uninterruptible power system, what at first expect is exactly to buy a uninterrupted power supply, and this uninterrupted power supply is followed the tracks of the civil power phase place under the civil power normal condition, simultaneously storage battery is charged; When the civil power power down or when unusual, the direct current of being stored by storage battery converts alternating current continuation powering load to by inverter on one side, automatically start alternating current generator on one side, after generator starts successfully, just, guarantee the uninterrupted of power supply by the generator powering load.Above method no doubt can be formed the alternating current generator uninterrupted power supply, but the cost of system increases greatly, and causes the waste of resource.This is itself to have had inverter because alternating current generator is inner, therefore when needs are formed the alternating current generator uninterruptible power system, need not to buy separately again uninterrupted power supply, as long as can finish relevant function to the internal structure transformation of alternating current generator.

If so existing digital alternating current generator control system is transformed, the direct current that utilizes its inner inverter to be implemented in the following storage battery of civil power powering-off state converts alternating current to and uses for load; Just can save cost of investment greatly, and need not to buy separately uninterrupted power supply, can avoid the overlapping investment and the wasting of resources.

The utility model content

The technical problems to be solved in the utility model provides a kind of alternating current generator uninterrupted power supply control system, uses this control system can realize uninterrupted power supply to load.

In order to solve the problems of the technologies described above, the utility model provides a kind of alternating current generator uninterrupted power supply control system, comprise respectively and the startup of main control module generator coupled and control module, rectifier and inverter that inverter also links to each other with the output filtration module with rectifier respectively; Control system also comprises the storage battery control module, and the storage battery control module links to each other with inverter with main control module respectively; The output filtration module links to each other with main control module.

Improvement as the utility model alternating current generator uninterrupted power supply control system: control system also comprises input filtration module and power factor correction module, and power factor correction module links to each other with main control module with input filtration module, storage battery control module, inverter respectively.

Further improvement as the utility model alternating current generator uninterrupted power supply control system: control system also comprises the input voltage detection module, and the input voltage detection module links to each other with main control module with the input filtration module respectively.

Alternating current generator uninterrupted power supply control system of the present utility model, it is the improvement of on the basis of existing digital alternating current generator control system, being done, it can make full use of the various components and parts of digital alternating current generator control system inside, has particularly rationally utilized inverter.Use alternating current generator uninterrupted power supply control system of the present utility model, just can realize uninterrupted power supply load; Overlap uninterrupted power supply and need not on the basis of digital alternating current generator, to dispose in addition again one; Therefore can reduce input cost, can also conveniently change storage battery.Alternating current generator uninterrupted power supply control system of the present utility model can realize civil power is carried out the function of voltage stabilizing, frequency stabilization, output zero switching, thereby not only can provide pure sinusoidal ac to load, can also realize the uninterrupted function to electric.

Description of drawings

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

Fig. 1 is the internal structure schematic diagram of existing digital alternating current generator control system;

Fig. 2 is the internal structure schematic diagram of alternating current generator uninterrupted power supply control system of the present utility model;

Fig. 3 is the actual user mode schematic diagram of Fig. 2.

Embodiment

Fig. 2 has provided a kind of alternating current generator uninterrupted power supply control system of the present utility model, comprises generator startup and control module 1, rectifier 2, inverter 3, output filtration module 4, main control module 5, storage battery control module 6, input filtration module 7, power factor correction module 8 and input voltage detection module 9.

Main control module 5 links to each other with input voltage detection module 9 with control module 1, rectifier 2, inverter 3, output filtration module 4, storage battery control module 6, power factor correction module 8 with the generator startup respectively.Input filtration module 7, power factor correction module 8, inverter 3 and output filtration module 4 link to each other successively.

Storage battery control module 6 links to each other with power factor correction module 8 with inverter 3 respectively.Input filtration module 7 links to each other with input voltage detection module 9.Rectifier 2 links to each other with inverter 3.

During a kind of alternating current generator uninterrupted power supply control system real work of the present utility model, as shown in Figure 3: mains supply 11 links to each other with input filtration module 7, storage battery control module 6 links to each other with storage battery 12, the generator startup all links to each other with alternating current generator 13 with control module 1, rectifier 2, and output filtration module 4 links to each other with load 14.

Its course of work is specific as follows:

The voltage of process 1, mains supply 11 outputs enters input filtration module 7 and carries out filtering, with the filtering noise jamming.

Main control module 5 detects the voltage swing after the above-mentioned Filtering Processing at any time by input voltage detection module 9, input voltage detection module 9 pairs of voltages have carried out the conversion of analog quantity to digital quantity, then this digital quantity and the voltage normal value that is stored in the input voltage detection module 9 self are compared.If the civil power of being imported with regard to expression in range of normal value is normal; If the minimum value less than this scope just illustrates that civil power is abnormal, promptly is in off-position.Input voltage detection module 9 is sent to main control module 5 with testing result.

Process 2, when civil power just often, voltage after input filtration module 7 Filtering Processing continues ingoing power factor correcting module 8, power factor correction module 8 voltage to input under the manipulation of main control module 5 control carries out modulation treatment, with the factor that improves input power with carry out boosting; Thereby the frequency that makes alternating current is modulated into the pulse-width control signal of 20KHz from 50Hz, and the voltage after rectification rises to DC360V.

High-frequency DC after boosting becomes alternating current by main control module 5 controls inverter 3 down with dc inverter on the one hand, and further after the Filtering Processing by output filtration module 4, the alternating current of exporting AC220V ± 2% at last is for load 14 uses then; Thereby by storage battery control module 6 storage battery 12 is charged on the other hand.

Main control module 5 is by exporting the size that filtration module 4 detects output voltage, and this output voltage is as the feedback voltage that inverter 3 is controlled then; According to the size of input voltage and feedback voltage, main control module 5 utilization loop control theories carry out pulse width modulation to inverter 3, i.e. PWM control; The final output voltage of inverter 3 that guarantees is at AC220V ± 2%.

Process 3, when civil power is undesired, when promptly being in off-position; By 12 discharges of storage battery control module 6 order storage batterys, the inverter 3 that storage battery control module 6 is delivered to the direct current of emitting in the storage battery 12 under main control module 5 controls carries out inversion to main control module 5, and dc inverter is become alternating current on one side; Further by after the Filtering Processing of exporting filtration module 4, the alternating current of exporting AC220V ± 2% at last uses for load 14 then.

Meanwhile, main control module 5 also orders generator startup and control module 1 to start the output voltage of alternating current generator 13 and control alternating current generator 13; The voltage of alternating current generator 13 outputs enters rectifier 2 and carries out rectification.When the direct voltage after rectifier 2 rectifications＜360V, the also not success of startup of alternating current generator 13 is described; Main control module 5 continues by 12 discharges of storage battery control module 6 order storage batterys, thereby gives load 14 power supplies.When the direct voltage after rectifier 2 rectifications 〉=360V, the startup success of alternating current generator 13 is described; After main control module 5 learns that from the output of rectifier 2 alternating current generator 13 starts successfully, control rectifier 2 with above-mentioned voltage successively through the inversion of inverter 3 handle and the Filtering Processing of output filtration module 4 after, the alternating current that becomes 220V ± 2% is for load 14 uses.In case inverter 3 has been accepted the output voltage of rectifier 2, under the control of storage battery control module 6, storage battery 12 stops discharge.

After alternating current generator 13 started, under the control of generator startup and 1 pair of alternating current generator 13 of control module, the output dc voltage that can guarantee rectifier 2 was 380V ± 20V.

Process 4 city power recovery in case normal (detecting content with process 1), main control module 5 order generators start and control module 1 is closed alternating current generator 13, and all the other contents are with process 2.

At last, it is also to be noted that what more than enumerate only is a specific embodiment of the present utility model.Obviously, the utility model is not limited to above embodiment, and many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought protection range of the present utility model.

Claims

1, a kind of alternating current generator uninterrupted power supply control system, comprise respectively starting and control module (1), rectifier (2) and inverter (3) that described inverter (3) also links to each other with output filtration module (4) with rectifier (2) respectively with main control module (5) generator coupled; It is characterized in that: control system also comprises storage battery control module (6), and described storage battery control module (6) links to each other with inverter (3) with main control module (5) respectively; Output filtration module (4) links to each other with main control module (5).

2, alternating current generator uninterrupted power supply control system according to claim 1, it is characterized in that: control system also comprises input filtration module (7) and power factor correction module (8), and described power factor correction module (8) links to each other with main control module (5) with input filtration module (7), storage battery control module (6), inverter (3) respectively.

3, alternating current generator uninterrupted power supply control system according to claim 2, it is characterized in that: control system also comprises input voltage detection module (9), and described input voltage detection module (9) links to each other with main control module (5) with input filtration module (7) respectively.