CN1101071C - Uninterruption power source - Google Patents
Uninterruption power source Download PDFInfo
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- CN1101071C CN1101071C CN98122327A CN98122327A CN1101071C CN 1101071 C CN1101071 C CN 1101071C CN 98122327 A CN98122327 A CN 98122327A CN 98122327 A CN98122327 A CN 98122327A CN 1101071 C CN1101071 C CN 1101071C
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Abstract
The present invention relates to an uninterruptible power supply which can output harmonic voltage and can recover energy. The present invention is characterized in that the uninterruptible power supply comprises a battery device, a DC/DC converter, an inverter of the DC/DC converter and a relay device, wherein the battery device is used for supplying DC voltage; the DC/DC converter is used for converting the DC voltage of the battery into DC voltage in a harmonic shape; the inverter of the DC/DC converter is used for converting the DC voltage in a harmonic shape into output voltage in a harmonic shape so as to supply uninterruptible power; the relay device is used for switching electricity supply between commercial power and the uninterruptible power; an energy recovering charger can recover superfluous and unnecessary energy into the battery; consequently, the uninterruptible power supply can supply power with high quality and high efficiency.
Description
The present invention relates to a kind of uninterrupted power supply, relate in particular to and a kind ofly cell voltage is converted to the harmonic wave output voltage with simple DC-DC converter, and with the energy recuperation charger with unnecessary unnecessary energy recuperation to battery, the tool harmonic wave output of high-quality and high efficiency supply of electric power and the off-line uninterrupted power supply of recoverable energy are provided thus.
Uninterrupted power supply (ups) Unity is a kind of AC power supply, its can be when civil power be undesired moment alternating current is provided, wherein, off line formula UPS just often only directly links output with civil power by its filter when civil power, uses for the load that connects the UPS output.When civil power is undesired (overtension or low excessively etc.), a kind of UPS simple structure with reference to figure 4, UPS sees through DC-DC converter (DC/DC converter) 42 earlier with its internal cell 41 voltages and converts higher direct voltage to, utilize inverter 43 converting direct-current voltage into alternating-current voltage that this is higher to use again for load, and this alternating voltage output is a kind of square wave form, yet for inductive load (as transformer, motor), the output of this kind square wave will cause load to damage, therefore, higher UPS all wishes to provide harmonic wave output, but must can reach this purpose with extremely complicated circuit, relatively also must consume the more energy, therefore, provide the uninterrupted power supply of a kind of low power consuming and output harmonic wave, be badly in need of the problem that solves just become as simple structure how.
The object of the present invention is to provide a kind of improved uninterrupted power supply, it can simple circuit configuration form the harmonic wave output voltage, and can be with unnecessary energy recuperation, so high-quality and high efficiency electric power can be provided.
The object of the present invention is achieved like this:
A kind of uninterrupted power supply is characterized in that it comprises:
One cell apparatus is with the supply direct voltage;
One DC-DC converter, its input is connected with battery, is converted to the direct voltage of a harmonic wave shape with the direct voltage with battery;
One inverter, its input and DC-DC converter are converted to the direct voltage of the harmonic wave shape of its output the output voltage of one harmonic forms;
One relay-set, its output is connected with inverter with civil power respectively, selects electric power to be provided by civil power or inverter output to switch;
One microcontroller, its output is connected with inverter, in order to control the voltage change action of described inverter;
One energy recuperation charger, this energy recuperation charger is connected between relay-set output and the cell apparatus, and controlled by the reference signal of microcontroller output and the ratio of DC-DC converter reset voltage, whether decision reclaims electric power to cell apparatus.
In above-mentioned uninterrupted power supply, wherein, described DC to DC converter comprises:
One direct current/dc controller, it generates pwm control signal according to the direct voltage by this harmonic wave shape of harmonic reference voltage that this microcontroller generated and feedback; And
One direct current/direct current transformation and switch, it is converted to the direct voltage of a harmonic wave shape by this pwm control signal control with the direct voltage with battery.
In above-mentioned uninterrupted power supply, wherein, described DC-DC controller is an adjustment pulse width modulation device, ratio according to the feedback voltage of the reference voltage of microcontroller output and DC-DC converter output produces two groups of PWM controlling signal, action with control DC-DC transformation and switch, wherein one group of PWM controlling signal output is to be connected to the energy recuperation charger, to control its action.
In above-mentioned uninterrupted power supply, wherein, described energy recuperation charger comprises:
One charging is switched and transformer, its be optionally with civil power to this cell apparatus power supply, and the excess energy of the supply of electric power of will not cutting off the power supply is recycled to this cell apparatus, and
One charge controller, it is controlled by the direct voltage of this harmonic wave shape, this harmonic reference voltage and this PWM controlling signal, switches the work of carrying out energy recuperation with transformer to control this charging when the undesired rising of the direct voltage of this harmonic wave shape and this PWM controlling signal do not exist.
In above-mentioned uninterrupted power supply, wherein, described charge controller comprises:
One error amplifier is in order to the relatively direct voltage of this harmonic wave shape and the size of this harmonic reference voltage;
One direct current/DC PWM detector is in order to survey the existence of this pwm control signal; And
One charging PWM controller, its result of detection according to the comparative result of this error amplifier and this DC-DC PWM detector control that this charging is switched and the work of transformer.
Uninterrupted power supply of the present invention with owing to adopted above-mentioned technical scheme, make it compared with the prior art have tangible advantage and good effect.By above technical scheme as can be known, uninterrupted power supply of the present invention can provide the harmonic wave output voltage with simple circuit configuration, and can be with unnecessary unnecessary energy recuperation, thereby high-quality and high efficiency electric power can be provided.
By the description of a following embodiment to uninterrupted power supply of the present invention, can further specify purpose of the present invention, specific structural features and advantage in conjunction with its accompanying drawing.Wherein, accompanying drawing is:
Fig. 1 is the structure block diagram according to the uninterrupted power supply of the present invention's proposition.
Fig. 2 is the structure block diagram according to energy recuperation charger in the uninterrupted power supply of the present invention's proposition.
Fig. 3 is the electrical schematic diagram according to the uninterrupted power supply of the present invention's proposition.
Fig. 4 is the structure block diagram of prior art uninterrupted power supply.
As shown in Figure 1, uninterrupted power supply of the present invention mainly comprises: members such as DC-DC converter 11, energy recuperation charger 12, inverter 13, microcontroller 14, input filter 15, relay 16 and battery 17.Wherein, this input filter 15 be at civil power just often to civil power filtering again through relay 16 output powers.This relay 16 also can switch the source of supply of electric power when civil power is undesired.
For suitable electric power is provided when civil power is undesired, this DC-DC converter 11 is the dc voltages that the voltage transitions of battery 17 become a harmonic wave shape, so, this inverter 13 can be directly switch into output with the dc voltage of this harmonic forms, and make load end obtain a harmonic wave output, finish and no longer need to see through complicated circuit, for reaching this purpose, this microcontroller 14 need be sent the reference signal of a harmonic wave, so that following this reference signal, DC-DC converter 11 its output is adjusted into the dc voltage of harmonic wave shape for inverter 13 uses, and this DC-DC converter 11 is made of one direct current/dc controller 111 and one direct current/direct current transformation and switch 112, this DC-DC controller 111 can be one and adjusts with pulse width modulation device (regulating pulse width modulator), it generates two pulse width modulation signal (PWM1 according to the reference signal of microcontroller 14 and the feedback voltage of DC-DC transformation and switch 112, PWM2), control DC-DC transformation and switch 112 with this, to generate required harmonic wave output.
Again for making UPS keep charged state and when powering, reclaiming unnecessary excess energy, this energy recuperation charger 12 just often becomes the AC voltage transitions of output the charging voltage of battery at civil power, and when civil power when undesired and UPS utilizes the output of internal cell 17 switching energies, this energy recuperation charger 12 can provide the function of energy recuperation, its working method is referring again to Fig. 1, when the load of UPS is inductive load, because the dephased problem of output voltage and electric current, output current can recharge the output of DC-DC converter 11 when causing some, cause this output voltage to raise, even this moment, this DC-DC controller 111 did not have output pwm signal, also can cause this voltage to raise and no longer as a harmonic voltage, therefore undesirable energy recuperation that energy recuperation charger 12 at the moment must be unnecessary with this is to battery 17, offer DC-DC converter 11 again and use, to promote whole efficient.And this energy recuperation charger 12 mainly is to be switched with transformer 122 by a charge controller 121 and a charging to be constituted, this charge controller 121 is the feedback voltage of reference signal, DC-DC transformation and switch 112 according to microcontroller 14 and the pwm signal of DC-DC controller 111, controls this charging and switches with transformer 122 unnecessary energy recuperation to battery 17.Yet, be not sometimes all can carry out the action of energy recuperation, the condition of its activation must be: (1) output has energy to recharge, and causes the DC-DC output voltage to rise; When (2) DC-DC converter 11 does not have pwm signal.Therefore, in order to survey this two condition, please refer to the block diagram of the charge controller 121 of Fig. 2, it includes an error amplifier 1211 and one direct current/DC PWM detector 1212 is finished aforesaid detection operations.This error amplifier 1211 compares the output voltage of DC-DC converter 11 and the harmonic reference signal of microcontroller 14, when the undesired rising of output voltage, error amplifier 1211 outputs become big and force a charging PWM controller 1213 work to carry out energy recuperation.This DC-DC PWM detector 1212 is then surveyed the pwm signal of DC-DC converter 11, when generating, pwm signal represents that this DC to DC converter 11 working, at this moment, activation (ENA) signal of this DC-DC PWM detector 1212 outputs is the charging action that this charging of start PWM controller 1213 cuts out this charging switching and transformer 122; Increase and add error amplifier 1211 outputs when no pwm signal generates, represent the current energy that recharges that has, this activation (ENA) this moment signal just this charging of start PWM controller 1213 switches and transformer 122 work this charging, reclaims excess energy.
Again about line construction of the present invention aspect, this microcontroller 14, input filter 15, relay 16 and battery 17 etc. are existing element, no longer describe in detail, and this inverter 13 can be made of switching transistor, this DC-DC converter 11 can be any circuit that can do the direct current conversion and switch, for example flyback (Flyback) or push-pull type (Push-pull) circuit structure, this energy recuperation charger 12 then can be and anyly alternating current can be changed into galvanic circuit, for example flyback (Flyback) or buck (Buck) circuit structure, what Fig. 3 showed is an example of line construction of the present invention, wherein, this inverter 13 is made of four groups of MOS transistor of being controlled by microcontroller 14, this direct current stream/direct current transducer 11 is circuit structures of a push-pull type (Push-pull), and this energy recuperation charger 12 then is the circuit structure of a flyback (Flyback).
Claims (5)
1. uninterrupted power supply is characterized in that it comprises:
One cell apparatus is with the supply direct voltage;
One DC-DC converter, its input is connected with battery, is converted to the direct voltage of a harmonic wave shape with the direct voltage with battery;
One inverter, its input and DC-DC converter are converted to the direct voltage of the harmonic wave shape of its output the output voltage of one harmonic forms;
One relay-set, its output is connected with inverter with civil power respectively, selects electric power to be provided by civil power or inverter output to switch;
One microcontroller, its output is connected with inverter, in order to control the voltage change action of described inverter;
One energy recuperation charger, this energy recuperation charger is connected between relay-set output and the cell apparatus, and controlled by the reference signal of microcontroller output and the ratio of DC-DC converter reset voltage, whether decision reclaims electric power to cell apparatus.
2. uninterrupted power supply according to claim 1 is characterized in that: described DC to DC converter comprises:
One direct current/dc controller, it generates pwm control signal according to the direct voltage by this harmonic wave shape of harmonic reference voltage that this microcontroller generated and feedback; And
One direct current/direct current transformation and switch, it is converted to the direct voltage of a harmonic wave shape by this pwm control signal control with the direct voltage with battery.
3. uninterrupted power supply according to claim 1 and 2, it is characterized in that: described DC-DC controller is an adjustment pulse width modulation device, ratio according to the feedback voltage of the reference voltage of microcontroller output and DC-DC converter output produces two groups of PWM controlling signal, action with control DC-DC transformation and switch, wherein one group of PWM controlling signal output is to be connected to the energy recuperation charger, to control its action.
4. uninterrupted power supply according to claim 1 is characterized in that: described energy recuperation charger comprises:
One charging is switched and transformer, its be optionally with civil power to this cell apparatus power supply, and the excess energy of the supply of electric power of will not cutting off the power supply is recycled to this cell apparatus, and
One charge controller, it is controlled by the direct voltage of this harmonic wave shape, this harmonic reference voltage and this PWM controlling signal, switches the work of carrying out energy recuperation with transformer to control this charging when the undesired rising of the direct voltage of this harmonic wave shape and this PWM controlling signal do not exist.
5. uninterrupted power supply according to claim 4 is characterized in that: described charge controller comprises:
One error amplifier is in order to the relatively direct voltage of this harmonic wave shape and the size of this harmonic reference voltage;
One direct current/DC PWM detector is in order to survey the existence of this pwm control signal; And
One charging PWM controller, its result of detection according to the comparative result of this error amplifier and this DC-DC PWM detector control that this charging is switched and the work of transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98122327A CN1101071C (en) | 1998-11-12 | 1998-11-12 | Uninterruption power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98122327A CN1101071C (en) | 1998-11-12 | 1998-11-12 | Uninterruption power source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1254215A CN1254215A (en) | 2000-05-24 |
| CN1101071C true CN1101071C (en) | 2003-02-05 |
Family
ID=5227734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98122327A Expired - Lifetime CN1101071C (en) | 1998-11-12 | 1998-11-12 | Uninterruption power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1101071C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100394667C (en) * | 2003-07-30 | 2008-06-11 | 飞瑞股份有限公司 | Uninterrupted power source module parallel control method and system thereof |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100373741C (en) * | 2005-02-02 | 2008-03-05 | 中国科学院上海微系统与信息技术研究所 | Protection system, construction method and use for beam source furnace power-off or misoperation |
| CN101521394B (en) * | 2008-02-28 | 2012-11-14 | 德观电子(上海)有限公司 | Online uninterrupted power supply |
| CN101521392A (en) * | 2008-02-28 | 2009-09-02 | 德观电子(上海)有限公司 | Off-line uninterrupted power supply device |
| CN103001313B (en) * | 2011-09-08 | 2015-07-22 | 联正电子(深圳)有限公司 | Off-line uninterrupted power system |
| CN103269545A (en) * | 2013-05-17 | 2013-08-28 | M2M株式会社 | Two-wire type self-latching relay control device used for LED lamp and driving method thereof |
-
1998
- 1998-11-12 CN CN98122327A patent/CN1101071C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100394667C (en) * | 2003-07-30 | 2008-06-11 | 飞瑞股份有限公司 | Uninterrupted power source module parallel control method and system thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1254215A (en) | 2000-05-24 |
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| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: EATON PHOENIXTEC MMPL CO., LTD. Free format text: FORMER OWNER: FEIRUI CO., LTD. Effective date: 20121121 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121121 Address after: Taiwan, Tainan, China 588 Zhongshan Road District Ren District No. 3 Patentee after: Eaton, flying fox, Limited by Share Ltd Address before: Taiwan, China Patentee before: Feirui Co., Ltd. |
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| CX01 | Expiry of patent term | ||
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Granted publication date: 20030205 |