CN205490172U - Ultraviolet lamp drive power supply - Google Patents
Ultraviolet lamp drive power supply Download PDFInfo
- Publication number
- CN205490172U CN205490172U CN201620046593.XU CN201620046593U CN205490172U CN 205490172 U CN205490172 U CN 205490172U CN 201620046593 U CN201620046593 U CN 201620046593U CN 205490172 U CN205490172 U CN 205490172U
- Authority
- CN
- China
- Prior art keywords
- drive circuit
- circuit
- main drive
- unit
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses an ultraviolet lamp drive power supply, through setting up respectively the main drive circuit unit of being connected with alternating current power supply and ultraviolet lamp, main drive circuit unit alternaties alternating voltage and becomes to predetermine the work of rectangle square wave voltage drive ultraviolet lamp, and the main control unit passes through insulation blocking unit and main drive circuit unit connection, sets up the drive circuit 0 who is used for monitoring main drive circuit unit output current on main drive circuit unit, the main control unit controls main drive circuit unit according to the output current of the main drive circuit unit that monitor cell monitored to the rectangle square wave voltage who makes the output of main drive circuit unit is in the default within range. Thereby realized to carry out the most effectual regulation to output according to the change accurate control output voltage of main drive circuit unit output current's size, solved and adopted the higher technical problem of step up transformer drive ultraviolet lamp energy consumption among the prior art.
Description
Technical field
This utility model relates to power-supply device field, in particular to a kind of ultraviolet lamp driving power source.
Background technology
Uviol lamp belongs to gas-discharge lamp.At present, the commonly used booster transformer in market drives uviol lamp,
Particular by transformator, power-frequency voltage is increased to the startup voltage (about 600-2000V) of uviol lamp.
On the one hand, owing to the volume of booster transformer is relatively big, heating is serious, thus cause inefficiency,
Energy consumption is high.On the other hand, booster transformer is used cannot to realize the Based Intelligent Control to uviol lamp, it is impossible to
Output voltage is carried out accuracy controlling, makes uviol lamp continue in high-power lower work, further result in very
High energy consumption.
The technical problem that uviol lamp energy consumption is higher, mesh is driven for prior art uses booster transformer
Before effective solution is not yet proposed.
Utility model content
This utility model embodiment provides a kind of ultraviolet lamp driving power source, at least to solve prior art
Middle employing booster transformer drives the technical problem that uviol lamp energy consumption is higher.
According to content of the present utility model, it is provided that a kind of ultraviolet lamp driving power source, including: main driving
Circuit unit, is connected with alternating current power supply and uviol lamp respectively, for alternating voltage is transformed into default square
Shape square-wave voltage drives uviol lamp work, wherein, main drive circuit unit is provided with for monitoring master
Drive circuit unit output electric current and the monitoring means of output voltage；Main control unit, is protected by isolation
Protect unit to be connected with main drive circuit unit, for the main drive circuit list monitored according to monitoring means
Unit output electric current and output voltage to described main drive circuit unit send PWM (Chinese,
Pulse width modulation) control signal, so that the rectangle square-wave voltage of main drive circuit unit output is in
In values.
Further, main drive circuit unit includes: current rectifying and wave filtering circuit, is connected with alternating current power supply,
Wherein, alternating current power supply is three-phase alternating-current supply, and current rectifying and wave filtering circuit is for by the three of three-phase alternating-current supply
Cross streams voltage transformation is DC voltage and is filtered；(Chinese, during blood pressure lowering for BUCK circuit
Translation circuit), it is connected with current rectifying and wave filtering circuit, for by the DC voltage through current rectifying and wave filtering circuit
It is reduced to preset value；H-bridge inverter circuit, is connected with BUCK circuit and uviol lamp, for will be through
Crossing BUCK circuit and being reduced to the DC voltage conversion of preset value is that rectangle square-wave voltage exports to ultraviolet
Lamp.
Further, current rectifying and wave filtering circuit includes: current regulating circuit, is used for making current rectifying and wave filtering circuit
Output electric current be maintained in values, wherein, current regulating circuit includes: regulation inductance,
Connect with three-phase uncontrollable rectifier bridge circuit；Regulation resistance, is provided with at least one, between regulation resistance
Parallel with one another and with regulation inductance connect；Control relay, parallel with one another with regulation resistance, it is used for controlling
Switching on and off of system regulation resistance.
Further, BUCK circuit includes: switching tube circuit, is connected with current rectifying and wave filtering circuit, uses
In regulation through straight by through current rectifying and wave filtering circuit of the dutycycle of the DC voltage of current rectifying and wave filtering circuit
Stream voltage drop as little as preset value.
Further, monitoring means includes: current monitoring module, is connected with switching tube circuit, is used for
Monitoring switch pipe circuit output current value and feed back to main control unit by insulation blocking unit.
Further, H-bridge inverter circuit includes: H bridge inverter, is connected with BUCK circuit,
Wherein, H bridge inverter includes four IGBT pipe (Chinese, insulated gate bipolar transistor),
For being rectangle square-wave voltage by the DC voltage conversion being reduced to preset value through BUCK circuit；High
Frequency power transformer, is connected with H bridge inverter, the rectangle square wave after regulating the conversion of H bridge inverter
Voltage magnitude size.
Further, monitoring means also includes: voltage monitoring module, is arranged on H bridge inverter with high
Between frequency power transformer, it is used for monitoring the output voltage values of H bridge inverter and pass through insulation blocking unit anti-
It is fed to main control unit.
Further, main control unit includes: dsp controller；A/D modular converter, by every
It is connected with monitoring means from protected location, the output electric current monitored for monitoring means and output voltage
It is sent to dsp controller after carrying out A/D conversion；D/A modular converter, by insulation blocking list
First and main drive circuit unit is connected, for being carried out by the pwm control signal that dsp controller sends
Send to main drive circuit unit after conversion.
Further, main control unit also includes: data transmission interface, for carrying out even with host computer
Connect；Fault detection module, is connected with main drive circuit unit by insulation blocking unit, for basis
Preset failure model judges whether the fault that main drive circuit unit occurs belongs to preset failure.
Further, ultraviolet lamp driving power source also includes: auxiliary switching power supply, respectively with main control list
Unit and insulation blocking unit connect, for powering to main control unit and insulation blocking unit.
Application technical solutions of the utility model ultraviolet lamp driving power source, by arrange respectively with alternating current
The main drive circuit unit that source and uviol lamp connect, alternating voltage is transformed into pre-by main drive circuit unit
If rectangle square-wave voltage drives uviol lamp work, main control unit is by insulation blocking unit and main driving
Circuit unit connects, and is provided for monitoring main drive circuit unit output electricity on main drive circuit unit
Stream and the monitoring means of output voltage；The main drive circuit that main control unit monitors according to monitoring means
Output electric current and the output voltage of unit send pwm control signal to main drive circuit unit, so that
The rectangle square-wave voltage of main drive circuit unit output is in values.It is achieved thereby that root
Output voltage is accurately controlled, it is possible to output according to the change of the size of main drive circuit unit output electric current
Power carries out maximally effective regulation, solves and uses booster transformer to drive uviol lamp energy in prior art
Consume higher technical problem, reach power adjustments accurately and fast, accurately and the skill of safe and intelligent
Art effect.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by of the present utility model, constitutes the application
A part, schematic description and description of the present utility model is used for explaining this utility model, and
Do not constitute improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structured flowchart according to the optional a kind of ultraviolet lamp driving power source of this utility model embodiment；
Fig. 2 is the structural frames according to the optionally another kind of ultraviolet lamp driving power source of this utility model embodiment
Figure；
Fig. 3 is the main drive circuit list according to this utility model embodiment optional ultraviolet lamp driving power source
The circuit diagram of unit；
Fig. 4 is the current rectifying and wave filtering circuit according to this utility model embodiment optional ultraviolet lamp driving power source
Circuit diagram；
Fig. 5 is the BUCK circuit according to this utility model embodiment optional ultraviolet lamp driving power source
Circuit diagram；
Fig. 6 is the H-bridge inverter circuit according to this utility model embodiment optional ultraviolet lamp driving power source
Circuit diagram；
Fig. 7 is the structural frames according to the optionally another kind of ultraviolet lamp driving power source of this utility model embodiment
Figure；
Fig. 8 is the structural frames according to the optionally another kind of ultraviolet lamp driving power source of this utility model embodiment
Figure.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that this utility model scheme, below in conjunction with this
Accompanying drawing in utility model embodiment, the technical scheme in this utility model embodiment is carried out clear,
It is fully described by, it is clear that described embodiment is only the embodiment of this utility model part,
Rather than whole embodiments.Based on the embodiment in this utility model, those of ordinary skill in the art
The every other embodiment obtained under not making creative work premise, all should belong to this reality
By novel protected scope.
Ultraviolet lamp driving power source according to this utility model embodiment, as it is shown in figure 1, include: master drives
Dynamic circuit unit 1, main control unit 2 and insulation blocking unit 3, main drive circuit unit 1 is respectively
It is connected with alternating current power supply 4 and uviol lamp 5, for alternating voltage being transformed into default rectangle square-wave voltage
Drive uviol lamp 5 to work, wherein, main drive circuit unit 1 is provided with for monitoring main driving electricity
Road unit output electric current and the monitoring means 6 of output voltage；Main control unit 2 is by insulation blocking list
Unit 3 is connected with main drive circuit unit 1, for the main drive circuit monitored according to monitoring means 6
Output electric current and the output voltage of unit 1 send pwm control signal to main drive circuit unit 1,
So that the rectangle square-wave voltage of main drive circuit unit 1 output is in values.
Application technical solutions of the utility model ultraviolet lamp driving power source, by arrange respectively with alternating current
The main drive circuit unit 1 that source 4 and uviol lamp 5 connect, main drive circuit unit 1 is by alternating voltage
Being transformed into default rectangle square-wave voltage and drive uviol lamp work, main control unit 2 is by insulation blocking list
Unit 3 is connected with main drive circuit unit 1, is provided for monitoring master and drives on main drive circuit unit 1
Dynamic circuit unit 1 exports the monitoring means 6 of electric current and output voltage；Main control unit 2 is according to monitoring
The output electric current of the main drive circuit unit 1 that unit 6 monitors and output voltage are to main drive circuit list
Unit 1 sends pwm control signal, and the rectangle square-wave voltage making main drive circuit unit 1 export is in
In values.It is achieved thereby that export electric current and output voltage according to main drive circuit unit 1
The change of size accurately controls output voltage, and output is carried out maximally effective regulation, solves existing
Have in technology and use booster transformer to drive the technical problem that uviol lamp energy consumption is higher, reached power tune
Joint is accurately and fast, accurately and the technique effect of safe and intelligent.
When being embodied as, as shown in Figures 2 and 3, main drive circuit unit 1 includes: rectifying and wave-filtering
Circuit 11, BUCK circuit 12 and H-bridge inverter circuit 13, as shown in Figure 4, current rectifying and wave filtering circuit
11 are made up of three-phase uncontrollable rectifier bridge circuit and filter circuit, and three-phase uncontrollable rectifier bridge circuit and three intersects
Stream power supply is directly connected to, and three-phase alternating voltage is converted to DC voltage.Filter circuit is released by one
Resistance R3 and four filter capacitors C1, C2, C3 and C4 composition, it is right that four filter capacitors realize
DC voltage after three-phase uncontrollable rectifier bridge circuit rectification is filtered, and obtains about the most afterwards
The DC bus-bar voltage of 537V, bleeder resistance R3 is for entering each filter capacitor when down circuitry
Row electric discharge.In order to reduce dash current when main drive circuit unit 1 starts, prevent current break,
Damaging main drive circuit unit 1, therefore, current rectifying and wave filtering circuit 11 also includes: current regulating circuit,
Current regulating circuit includes the regulation inductance T4 after being connected on three-phase uncontrollable rectifier bridge circuit and mutually
Two regulation resistance R1 and R2, regulation inductance T4 in parallel can make through three-phase uncontrollable rectifier bridge
DC current after circuit transformations is more smooth.It is parallel with for controlling on regulation resistance R1 and R2
The relay K 1 switched on and off of regulation resistance R1 and R2, relay K 1 when power supply just starts
Disconnect, regulation resistance R1 and R2 is accessed circuit, after three-phase uncontrollable rectifier bridge circuit converts
DC current by resistance R1 and R2, four filter capacitors C1, C2, C3 and C4 are filled
Electricity, thus limit dash current when just starting, after a switch periods, relay K 1 connects
Logical, by resistance R1, R2 short circuit, the DC current after three-phase uncontrollable rectifier bridge circuit converts is straight
Connecing and be charged four filter capacitors C1, C2, C3 and C4, power supply enters normal mode of operation.
BUCK circuit 12 is connected with current rectifying and wave filtering circuit 11, and being used for will be through current rectifying and wave filtering circuit 11
DC voltage be reduced to preset value；As it is shown in figure 5, BUCK circuit is by two copper bars and rectification
Filter circuit 11 connects, and includes switching tube circuit, the two of switching tube circuit in BUCK circuit 12
Individual IGBT switching tube regulates the dutycycle of the DC voltage through current rectifying and wave filtering circuit by timesharing conducting,
Meanwhile, the effect output area through inductance T3 and storage capacitor C5, C6, C7 and C8 is 0
To the DC voltage of 537V, this utility model embodiment BUCK circuit output DC voltage is 371V.
As shown in Figure 6, H-bridge inverter circuit 13 includes: H bridge inverter and high frequency transformer T1,
H bridge inverter is made up of four high-power IGBT pipes, and two IGBT pipe compositions of the upper and lower bridge of Q2 are inverse
Become the leading-bridge of device, the lagging leg of two IGBT pipe composition inverters of the upper and lower bridge of Q3, output
End is connected with the A end of leading-bridge and the B end of lagging leg respectively, by changing four IGBT
The on off operating mode of pipe, can obtain, at the side a and b of H bridge inverter, the square that an amplitude is Vin
Shape square-wave voltage VAB, carry out transformation by high frequency transformer T1, i.e. can get output voltage VuvWith
Work in driving uviol lamp 5.Meanwhile, high frequency transformer T1 can also play the effect of electromagnetic isolation.
As it is shown in fig. 7, monitoring means 6 includes: current monitoring module 61 and voltage monitoring module 62,
As it is shown in figure 5, current monitoring module 61 is to be arranged on switching tube circuit and the electricity of BUCK circuit 12
Between sense T3, current sensor S1, current sensor S1 are for monitoring switch pipe circuit Q1 output
Current value also feeds back to main control unit 2 by insulation blocking unit 3；As shown in Figure 6, voltage prison
Surveying module 62 is to be arranged between the H bridge inverter of H-bridge inverter circuit 13 and high frequency transformer T1
Voltage sensor S2, voltage sensor S2 for monitoring the output voltage values of H bridge inverter and lead to
Crossing insulation blocking unit 3 and feed back to main control unit 2, main control unit 2 receives main drive circuit
After the output electric current of unit 1 and output voltage signal, by two in BUCK circuit 12
When IGBT switching tube sends the conducting that corresponding pwm control signal controls two IGBT switching tubes
Between thus regulate the output voltage of main drive circuit unit 1, it addition, main control unit 2 is by H
Four IGBT pipes in bridge inverter circuit 13 send corresponding pwm control signal and control four
The on off operating mode of IGBT pipe thus obtain the rectangle square-wave voltage V that amplitude is VinABDrive uviol lamp 5
Work.
As it is shown in fig. 7, main control unit 2 includes: A/D modular converter 21, D/A modulus of conversion
Block 22, data transmission interface 23, fault detection module 24 and dsp controller 25.A/D changes
Module 21 is by insulation blocking unit 3 and the current monitoring module 61 of monitoring means 6 and voltage monitoring
Module 62 connects, and current monitoring module 61 and voltage monitoring module 62 are by the voltage detected and electricity
Stream parameter carries out sampling by A/D modular converter 21 and obtains corresponding digital signal and send to DSP
Controller 25, the default value that this digital signal is given with system is subtracted each other by dsp controller 25
Obtain deviation, be calculated the physical simulation of subsequent time controlled quentity controlled variable simultaneously according to the control algolithm set
Parameter also passes through to control respectively after D/A modular converter 22 is changed two of BUCK circuit 12
The ON time of IGBT switching tube and four high-power IGBT pipes of H-bridge inverter circuit 13 logical
Disconnected state thus realize the closed loop of uviol lamp 5 input voltage is accurately controlled, reach the mesh of power adjustments
, it is prevented effectively from power wastage.
Fault detection module 24 is connected with main drive circuit unit 1 by insulation blocking unit 3, energy
Enough main drive circuit unit 1 fault data in the course of the work is acquired and is sent to DSP
Controller 25, the given default value of fault data with system is compared by dsp controller 25
I.e. can get failure cause, so that realizing fault detect.
In order to realize the data interaction with host computer, main control unit 2 also sets up data transmission interface 23
It is connected with host computer, the control algolithm data of host computer can be sent to dsp controller 25 right
Dsp controller 25 is tested, it is also possible to the main drive circuit list gathered by dsp controller 25
The fault data of unit 1 preserves, the foundation improved as system.Alternatively, data transmission interface
23 can use jtag interface.
It addition, in order to ensure main control unit 2 and the normal power supply of insulation blocking unit 3, such as Fig. 8
Shown in, the ultraviolet lamp driving power source of this utility model embodiment is additionally provided with auxiliary switching power supply 7, auxiliary
The input helping Switching Power Supply 7 is connected with current rectifying and wave filtering circuit 11, the output of auxiliary switching power supply 7
End is connected with main control unit 2 and insulation blocking unit 3 respectively, is exported by current rectifying and wave filtering circuit 11
DC voltage carry out transformation after obtain 3.3V and the 1.8V running voltage of dsp controller job demand,
And+5V needed for insulation blocking unit 3 and other chip operations ,+15V ,-15V, 24V and
28V running voltage.
Below it is only preferred implementation of the present utility model, it is noted that for the art
For those of ordinary skill, on the premise of without departing from this utility model principle, it is also possible to make some
Improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (10)
1. a ultraviolet lamp driving power source, it is characterised in that including:
Main drive circuit unit, is connected with alternating current power supply and uviol lamp respectively, for by alternating current
Buckling changes default rectangle square-wave voltage into and drives the work of described uviol lamp, wherein, described main driving
It is provided with on circuit unit for monitoring described main drive circuit unit output electric current and output voltage
Monitoring means；
Main control unit, is connected with described main drive circuit unit by insulation blocking unit, uses
In the described main drive circuit unit monitored according to described monitoring means described output electric current and
Described output voltage sends pwm control signal to described main drive circuit unit, so that described
The described rectangle square-wave voltage of main drive circuit unit output is in values.
Ultraviolet lamp driving power source the most according to claim 1, it is characterised in that described main drive circuit
Unit includes:
Current rectifying and wave filtering circuit, is connected with described alternating current power supply, and wherein, described alternating current power supply is three
Cross streams power supply, described current rectifying and wave filtering circuit is for by the three-phase alternating current of described three-phase alternating-current supply
Voltage transformation is DC voltage and is filtered；
BUCK circuit, is connected with described current rectifying and wave filtering circuit, for filtering through described rectification
The described DC voltage of wave circuit is reduced to preset value；
H-bridge inverter circuit, is connected with described BUCK circuit and described uviol lamp, for will be through
Crossing described BUCK circuit and being reduced to the described DC voltage conversion of preset value is described rectangle square wave
Voltage output is to described uviol lamp.
Ultraviolet lamp driving power source the most according to claim 2, it is characterised in that described rectifying and wave-filtering
Circuit includes: current regulating circuit, for making the output electric current of described current rectifying and wave filtering circuit keep
In values, wherein, described current regulating circuit includes:
Regulation inductance, connects with described three-phase uncontrollable rectifier bridge circuit；
Regulation resistance, be provided with at least one, between described regulation resistance parallel with one another and with institute
State regulation inductance series connection；
Control relay, parallel with one another with described regulation resistance, it is used for controlling described regulation resistance
Switch on and off.
Ultraviolet lamp driving power source the most according to claim 2, it is characterised in that described BUCK electricity
Road includes:
Switching tube circuit, is connected with described current rectifying and wave filtering circuit, for regulation through described rectification
The dutycycle of the described DC voltage of filter circuit by through described current rectifying and wave filtering circuit described directly
Stream voltage drop as little as preset value.
Ultraviolet lamp driving power source the most according to claim 4, it is characterised in that described monitoring means
Including:
Current monitoring module, is connected with described switching tube circuit, is used for monitoring described switching tube electricity
Road output current value and feed back to described main control unit by described insulation blocking unit.
Ultraviolet lamp driving power source the most according to claim 2, it is characterised in that described H bridge inversion
Circuit includes:
H bridge inverter, is connected with described BUCK circuit, wherein, and described H bridge inverter bag
Include four IGBT pipes, for will be reduced to the unidirectional current of preset value through described BUCK circuit
Buckling is changed to rectangle square-wave voltage；
High frequency transformer, is connected with described H bridge inverter, is used for regulating described H bridge inverter
Rectangle square-wave voltage amplitude size after conversion.
Ultraviolet lamp driving power source the most according to claim 6, it is characterised in that described monitoring means
Also include:
Voltage monitoring module, is arranged between described H bridge inverter and described high frequency transformer,
For monitoring the output voltage values of described H bridge inverter and being fed back by described insulation blocking unit
To described main control unit.
Ultraviolet lamp driving power source the most according to claim 1, it is characterised in that described main control list
Unit includes:
Dsp controller；
A/D modular converter, is connected with described monitoring means by insulation blocking unit, for institute
State described output electric current that monitoring means monitors and after described output voltage carries out A/D conversion
It is sent to described dsp controller；
D/A modular converter, is connected with described main drive circuit unit by insulation blocking unit,
Send to described after the pwm control signal that described dsp controller sends is changed
Main drive circuit unit.
Ultraviolet lamp driving power source the most according to claim 8, it is characterised in that described main control list
Unit also includes:
Data transmission interface, for being attached with host computer；
Fault detection module, is connected with described main drive circuit unit by insulation blocking unit,
For judging whether the fault that described main drive circuit unit occurs belongs to according to preset failure model
Preset failure.
Ultraviolet lamp driving power source the most according to claim 1, it is characterised in that described uviol lamp drives
Galvanic electricity source also includes:
Auxiliary switching power supply, is connected with described main control unit and described insulation blocking unit respectively,
For powering to described main control unit and described insulation blocking unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620046593.XU CN205490172U (en) | 2016-01-18 | 2016-01-18 | Ultraviolet lamp drive power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620046593.XU CN205490172U (en) | 2016-01-18 | 2016-01-18 | Ultraviolet lamp drive power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205490172U true CN205490172U (en) | 2016-08-17 |
Family
ID=56670117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620046593.XU Active CN205490172U (en) | 2016-01-18 | 2016-01-18 | Ultraviolet lamp drive power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205490172U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471279A (en) * | 2016-01-18 | 2016-04-06 | 烟台德和信电子技术有限公司 | Ultraviolet lamp drive power supply |
-
2016
- 2016-01-18 CN CN201620046593.XU patent/CN205490172U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471279A (en) * | 2016-01-18 | 2016-04-06 | 烟台德和信电子技术有限公司 | Ultraviolet lamp drive power supply |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104682431B (en) | Self-starting method and self-starting system of energy storage converter | |
| CN106786643B (en) | Fault current active control type current limiting system and its control method | |
| CN206195631U (en) | Efficient half -bridge resonance AC DC converter | |
| CN105514939B (en) | Electric workover rig energy storage super capacitor charge-discharge controller and control method | |
| CN104210982A (en) | Elevator brake control system and control method | |
| CN107276388A (en) | Pfc circuit and transducer air conditioning | |
| CN102005772B (en) | Network combination inversion system and control method thereof | |
| CN105356784B (en) | A kind of combining inverter with DC bus-bar voltage equilibrium function | |
| CN102820646B (en) | Device and method for controlling fault ride-through of power grid of flexible direct-current transmission system | |
| CN103036457B (en) | AC-DC converter | |
| CN107769592A (en) | A kind of both ends shape of the mouth as one speaks AC/DC current transformers based on coupling inductance | |
| CN105471279A (en) | Ultraviolet lamp drive power supply | |
| CN204012748U (en) | SPWM rectification feedback device for a kind of variable-frequency motor | |
| CN205490172U (en) | Ultraviolet lamp drive power supply | |
| CN206117270U (en) | Numerical control dynamic output machine that charges based on 6752 6754 chip | |
| CN101783514B (en) | Correction method and circuit of AC load power factor | |
| CN206908512U (en) | PFC circuit and transducer air conditioning | |
| CN101247073A (en) | Energy feedback and harmonic reactive-load compensation system suitable for multi-group commutating device | |
| CN207269200U (en) | A kind of built in bypass control topological structure based on high voltage converter | |
| CN105471241A (en) | Mechanical contactor based two-path-power-supply high-voltage frequency converter unit bypass apparatus | |
| CN103427478B (en) | A kind of power supply crossfeed system | |
| CN209626979U (en) | A kind of first and last end three-phase imbalance controlling device | |
| CN207827607U (en) | AC DC bi-directional conversion circuit and elevator automatic help operating device | |
| CN206790358U (en) | A kind of shaking platform excitation power | |
| CN105406457A (en) | Two-circuit power supply high-voltage frequency converter unit bypass device based on thyristor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181016 Address after: 264000 3 Laishan Road, Yantai, Shandong Patentee after: Yantai Krey Intelligent Control Technology Co., Ltd. Address before: 264000 3 Laishan Road, Yantai, Shandong Patentee before: YANTAI DEHEXIN ELECTRONIC TECHNOLOGY CO., LTD. |
|
| TR01 | Transfer of patent right |