WO1999022439A1 - Dispositif d'alimentation en energie electrique d'un ozoneur - Google Patents
Dispositif d'alimentation en energie electrique d'un ozoneur Download PDFInfo
- Publication number
- WO1999022439A1 WO1999022439A1 PCT/FR1998/002290 FR9802290W WO9922439A1 WO 1999022439 A1 WO1999022439 A1 WO 1999022439A1 FR 9802290 W FR9802290 W FR 9802290W WO 9922439 A1 WO9922439 A1 WO 9922439A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ozonator
- frequency
- load
- dual
- power
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/10—Preparation of ozone
- C01B13/11—Preparation of ozone by electric discharge
- C01B13/115—Preparation of ozone by electric discharge characterised by the electrical circuits producing the electrical discharge
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/505—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/515—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M7/523—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with LC-resonance circuit in the main circuit
- H02M7/5233—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with LC-resonance circuit in the main circuit the commutation elements being in a push-pull arrangement
- H02M7/5236—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with LC-resonance circuit in the main circuit the commutation elements being in a push-pull arrangement in a series push-pull arrangement
Definitions
- the present invention relates to a device for supplying electrical energy to an ozonizer for frequencies from 400 Hz to several tens of KHz.
- the presently known industrial ozonizers comprise two electrodes separated by a dielectric and a discharge space in which a dry gas containing oxygen circulates. If a voltage high enough to reach the gas disruptive point is applied to the terminals of these electrodes, there is an emanation between them. The corona dissociates oxygen in the discharge space and thus forms a gas containing an ozone concentration depending on the power applied and the gas flow rate.
- two different types of devices for supplying these ozonizers are two different types of devices for supplying these ozonizers.
- Supply devices include a frequency converter making it possible to increase the supply frequency of 1 ozonator relative to the network frequency and to improve the production of ozone.
- These converters are constituted by inverters of the parallel or series type, to which is connected either a resonant load of the LC type or a non-resonant load, uncompensated and with forced switching, much less expensive than the LC loads but having a power factor deplorable.
- An arrangement of a series type inverter is described in French Patent No. 39,770 (FR 1,544,857) having the title "Electric power system for ozonator".
- the improvement in the performance of ozone generators and more particularly their capacity to economically produce ozone at high concentration leads to increasingly capacitive charges inducing a significant reduction in the power factor of the charge seen from the source of power. These conditions require the use of load compensation in order to optimize the dimensioning of the power source.
- improving the performance of ozone generating components leads to rec h ercher an increase in the power applied by unit f ace (power density) which requires for a given ⁇ configura tion (formula Manley) to increase the power of ensity of an increase in the frequency or increased sex ⁇ mentation of tension.
- the object of the invention is to create a device making it possible to design, at the lowest cost, a supply for an industrial ozonator operating stably at frequencies between 400 Hz and high frequencies which can reach several tens of KHz.
- the invention relates to a feeding device into electrical energy of an ozonizer, characterized in that it comprises a neck supply source ⁇ rant continuously, the terminals of which are connected an inverter bridge series dual coupled to a resonant load composed of a high voltage inductor in series with the ozonator.
- Fig.l shows a diagram of a series load composed of a choke and an ozonator illustrating the load used according to the invention
- Fig.2 and 3 show curves of the evolution of 1 impedance as a function of the frequency and of the applied current illustrating the principle of operation of the device according to the invention
- FIGS. 4A and 4B respectively represent a diagram of a dual thyristor entering into the constitution of the device according to the invention and its characteristics d 'impedance
- Fig.5 shows a block diagram of dual series inverter supply device according to the invention.
- the resonant circuit of the charge of an ozonator is composed of a high voltage reactor designated by the reference 1 and of an ozonator made up of two capacitors, respectively Cd 2 and Cg 3, representing one, Cd 2, a dielectric and the other, Cg 3, a discharge space filled with a volume of gas, and a zener diode 4 symbolizing the disruptive voltage Eo of the gas.
- the inductor 1 and the ozonator 2,3,4 are coupled in series.
- the self plays a double role. On the one hand, it compensates for the reactive energy of the circuit, and on the other hand, it raises the voltage on the ozonator to the desired power level.
- the assembly oscillates at a resonance frequency F 0 .
- the main characteristics of the ozone generator are to have a capacitor 3 of variable capacity Cg according to the applied voltage and therefore the resulting power.
- the frequency being a function of this capacity, the frequency of the circuit is naturally variable as a function of the power. It is shown in Fig. 2.
- This graph shows the evolution of the frequency as a function of the active power applied to the ozonator.
- the main difficulty with this type of circuit is the fall in the resonant frequency F 0 as a function of active power. Indeed, at low power, the frequency is higher than at high power.
- Fig.3 shows the evolution of the impedance as a function of the oscillation frequency of the circuit.
- the natural state rel of the circuit breaks down, depending on the nature of the load as follows:
- the ozonator therefore has a non-linear and highly variable impedance as a function of the oscillation frequency of the circuit. It also presents a risk of short circuit which, in the case of a conventional series thyristor type inverter, keeps the thyristors of the inverter bridge in conduction.
- a power device of the dual thyristor type is used according to the invention, which makes it possible, on the one hand, to maintain the operating frequency of the ozonator at a value greater than the resonance frequency of the load. and, on the other hand, to block the dual thyristors in the event of a short circuit.
- a dual thyristor consists of a switching member designated by the reference 5 which may be a biocable thyristor, or even a bipolar transistor such as an IGBT or field effect and , placed in antiparallel, a switching diode designated by reference 6.
- the dual thyristor is a switching device which has the characteristic of being closed or conductive in its natural state, of being controllable on opening and then of closing naturally by reversing the voltage across its terminals.
- the characteristic of current impedance as a function of the voltage shown in FIG. 4B illustrates the switching principle of this member used in the invention.
- This switch unlike the conventional thyristor, lets current flow in its natural state. It is blocked by an order sent to the trigger. The voltage rises at its terminals until the current is canceled through the switch member 5, the current can always flow in reverse in the antiparallel diode 6. Thus the current can to be behind the tension. With this type of switch, the load must be globally inductive.
- the electrical energy supply device makes it possible to supply an ozonizer designated by the reference 7 from a direct current supply source designated by reference 8.
- This DC power source can conventionally comprise a rectifier bridge of the Graetz bridge type, with thyristors, designated by the general reference 9, a smoothing inductor 10 and a set of capacitors 11.
- the series resonant circuit comprises an inductor 14 and the ozonator 7.
- four semiconductor thyristor dual technology switching members 15 controlled by electronic tripping means are connected in parallel to the terminals of the load by via a high voltage transformer 16 which has a parasitic leakage inductor 17.
- the four dual thyristors 15 operate alternately in order to obtain a voltage signal of rectangular shape.
- the charging circuit consisting alternately of the leakage choke 17 of the transformer 16 of the high-voltage choke 14 and of the ozonator 7 constitutes a globally inductive impedance and operates at a frequency higher than the resonance frequency locked by a control device (not shown) and of the conventional type.
- the inverter follows this frequency which varies according to the level of power injected (Fig. 2).
- the undu- their works in autopilot mode in which the frequency is imposed by the oscillating circuit (operation in natural mode).
- the load is therefore resistive and the phase difference between the voltage and the current on the load is very small.
- the main role of the high-voltage inductor 14 is to compensate for the low power factor of the load represented by the ozonator and at the same time has the effect of raising the voltage across the terminals of the ozonator.
- lower versions are obtained at the output of the high voltage transformer 16. These voltage levels become closer to the output voltages of the inverter. The drop in this output voltage eliminates this high voltage transformer 16 and thus achieves direct coupling between the dual series inverter and the load composed of the high voltage inductor and the ozonator.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inorganic Chemistry (AREA)
- Inverter Devices (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/331,439 US6451267B1 (en) | 1997-10-24 | 1998-10-26 | Device for powering an ozonizer |
EP98951557A EP0948836A1 (fr) | 1997-10-24 | 1998-10-26 | Dispositif d'alimentation en energie electrique d'un ozoneur |
AU97521/98A AU9752198A (en) | 1997-10-24 | 1998-10-26 | Device for powering an ozonizer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9713387A FR2770348B1 (fr) | 1997-10-24 | 1997-10-24 | Dispositif d'alimentation en energie electrique d'un ozoneur |
FR97/13387 | 1997-10-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999022439A1 true WO1999022439A1 (fr) | 1999-05-06 |
Family
ID=9512635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1998/002290 WO1999022439A1 (fr) | 1997-10-24 | 1998-10-26 | Dispositif d'alimentation en energie electrique d'un ozoneur |
Country Status (5)
Country | Link |
---|---|
US (1) | US6451267B1 (fr) |
EP (1) | EP0948836A1 (fr) |
AU (1) | AU9752198A (fr) |
FR (1) | FR2770348B1 (fr) |
WO (1) | WO1999022439A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2852223T3 (es) * | 2006-12-20 | 2021-09-13 | Primozone Production Ab | Transformador de alta tensión |
US20140008211A1 (en) * | 2012-07-06 | 2014-01-09 | Pacific Ozone Technology, Inc. | Ozone cell power supply apparatus and method |
JP2014189455A (ja) * | 2013-03-27 | 2014-10-06 | Toshiba Corp | オゾン発生装置用電源及びオゾン発生装置 |
US10110146B2 (en) * | 2014-09-30 | 2018-10-23 | Lawrence Livermore National Security, Llc | Pulse-train drive system for electrostatic generators and motors |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3507886A1 (de) * | 1985-03-06 | 1986-09-11 | E.M. Heinkel KG, 7317 Wendlingen | Schaltungsanordnung zum betreiben eines hf-ozonisators |
US4758940A (en) * | 1987-05-04 | 1988-07-19 | General Electric Company | Control circuit for insuring super-resonant operation of resonant converter |
US5135725A (en) * | 1989-08-14 | 1992-08-04 | Infilco Degremont Inc. | Ozone generator equipment and methods |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2610150B1 (fr) * | 1987-01-23 | 1989-05-12 | Trailigaz | Dispositif d'alimentation electrique pour un ozoneur |
-
1997
- 1997-10-24 FR FR9713387A patent/FR2770348B1/fr not_active Expired - Fee Related
-
1998
- 1998-10-26 AU AU97521/98A patent/AU9752198A/en not_active Abandoned
- 1998-10-26 WO PCT/FR1998/002290 patent/WO1999022439A1/fr active Application Filing
- 1998-10-26 US US09/331,439 patent/US6451267B1/en not_active Expired - Fee Related
- 1998-10-26 EP EP98951557A patent/EP0948836A1/fr not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3507886A1 (de) * | 1985-03-06 | 1986-09-11 | E.M. Heinkel KG, 7317 Wendlingen | Schaltungsanordnung zum betreiben eines hf-ozonisators |
US4758940A (en) * | 1987-05-04 | 1988-07-19 | General Electric Company | Control circuit for insuring super-resonant operation of resonant converter |
US5135725A (en) * | 1989-08-14 | 1992-08-04 | Infilco Degremont Inc. | Ozone generator equipment and methods |
Also Published As
Publication number | Publication date |
---|---|
AU9752198A (en) | 1999-05-17 |
EP0948836A1 (fr) | 1999-10-13 |
FR2770348B1 (fr) | 2000-01-21 |
FR2770348A1 (fr) | 1999-04-30 |
US6451267B1 (en) | 2002-09-17 |
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