CN108322060A - A kind of digital program controlled AC power based on PWM controller - Google Patents
A kind of digital program controlled AC power based on PWM controller Download PDFInfo
- Publication number
- CN108322060A CN108322060A CN201711488147.XA CN201711488147A CN108322060A CN 108322060 A CN108322060 A CN 108322060A CN 201711488147 A CN201711488147 A CN 201711488147A CN 108322060 A CN108322060 A CN 108322060A
- Authority
- CN
- China
- Prior art keywords
- switching tube
- driving chip
- diode
- switch pipe
- pins
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/34—Snubber circuits
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/34—Snubber circuits
- H02M1/344—Active dissipative snubbers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The digital program controlled AC power based on PWM controller that the invention discloses a kind of, including the electromagnetic interface filter being sequentially connected, uncontrollable rectifier device, DC filter, switching tube and alternating current filter, the alternating voltage of input is after electromagnetic interface filter filters out high-frequency interferencing signal, it is changed into DC voltage through uncontrollable rectifier device and DC filter, DC voltage is after switching tube is changed into alternating current, through alternating current filter output AC voltage, the output end of alternating current filter sampled ultramagnifier successively, PWM controller and driver for isolating are connected with switching tube, switching tube is also associated with buffer circuit, buffer circuit is for making the switching tube of switching tube be operated in safety operation area.The present invention can be adjusted output voltage, and switching tube can be made to be operated in safety operation area, reduce the switching loss and electromagnetic interference of device, ensure that AC power is safely and reliably powered.
Description
Technical field
The present invention relates to power electronic equipment field more particularly to a kind of digital program controlled AC powers based on PWM.
Background technology
In recent years, with the extensive use of all kinds of power electronic equipments, lead to the harmonic pollution getting worse in power grid, electricity
Energy quality also declines therewith, and in contrast, since various high and new technology equipments constantly come into operation, user wants power quality
Ask higher and higher, it is desirable to obtain the electric energy supply of the slight harmonic pollution even voltage stabilization of no-harmonic wave pollution.In addition, real
All kinds of engineering projects in border require there are difference the design parameter of power supply, and the power parameter required by same occasion may also
Difference, common AC power are all output fixing signals, and timely Parameter adjustable is also very limited, cannot meet load requirement.This
Outside, the switching tube in AC power will produce take advantage of a situation surge voltage and surge current, to cause in the moment for being closed or disconnecting
The loss of device and electromagnetic interference influence the normal use of AC power to cause the breakdown of component.
Invention content
The digital program controlled AC power based on PWM that the purpose of the present invention is to provide a kind of can carry out output voltage
Adjustment, and switching tube can be made to be operated in safety operation area, the switching loss and electromagnetic interference of device are reduced, ensures alternating current
Source safely and reliably powers.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of digital program controlled AC power based on PWM controller, including the electromagnetic interface filter, uncontrollable rectifier device, straight that is sequentially connected
Filter, switching tube and alternating current filter are flowed, the electromagnetic interface filter is used to carry out low-pass filtering to the alternating voltage of input, will
High-frequency interferencing signal barrier is fallen, and frequency signal when permission equipment being made to work normally enters equipment, and uncontrollable rectifier device will be for that will hand over
Stream voltage commutation is DC voltage, and DC filter is used for smooth voltage or electric current input switch pipe, and switching tube is used for will
Direct current becomes alternating current, and alternating current filter is for being filtered alternating voltage, and the alternating voltage of input is through electromagnetic interface filter mistake
After filtering high-frequency interferencing signal, it is changed into DC voltage through uncontrollable rectifier device and DC filter, DC voltage turns through switching tube
After becoming alternating current, through alternating current filter output AC voltage, the output end of alternating current filter sampled ultramagnifier, PWM successively
Controller and driver for isolating are connected with switching tube, and the switching tube is also associated with buffer circuit, and buffer circuit is for making switch
The switching tube of pipe is operated in safety operation area.
Preferably, the driver for isolating includes photoelectrical coupler and driving chip, the input terminal of the photoelectrical coupler
It is connected with the output end of PWM controller through the first potentiometer, the first output end of photoelectrical coupler is through first resistor and driving core
7 pins of piece are connected, and the second output terminal of photoelectrical coupler is connected with 1 pin of driving chip, and 1 pin of driving chip also passes through
Second potentiometer is grounded, and 2 pins of driving chip are connected through second resistance and the second capacitance with 3 pins of driving chip successively,
The second resistance is also connected through the first diode with 13 pins of driving chip with the common end of the second capacitance, driving chip
13 pins are connected through third capacitance with 11 pins of driving chip, and 13 pins of driving chip are also successively through the first diode and
Four capacitances are connected with 5 pins of driving chip, and the 5 pins ground connection of driving chip, 4 pins of the driving chip are through third current potential
Device is connected with 3 pins of driving chip, and 12 pins of driving chip are connected through the second diode with the gate pole of first switch pipe, the
Two diode both ends are parallel with 3rd resistor, and the gate pole of first switch pipe is connected through the 4th resistance with 11 pins of driving chip,
The gate pole of first switch pipe is also connected through third diode and the 4th diode with 11 pins of driving chip successively, and described first
The collector of switching tube connects positive pole, and the emitting stage of first switch pipe is connected with 11 pins of driving chip, the driving
1 pin of chip is connected with the collector of second switch pipe, the emitting stage ground connection of second switch pipe, the gate pole warp of second switch pipe
5th diode is connected with 6 pins of driving chip, and the 5th diode both ends are parallel with the 5th resistance, the gate pole of second switch pipe
Also through the 6th resistance eutral grounding, the 6th resistance both ends are parallel with the series circuit being made of the 6th diode and the 7th diode.
Preferably, the 4th diode and the 7th diode are all made of zener diode, the first switch pipe and
Two switching tubes are all made of IGBT.
Preferably, the buffer circuit includes power supply, first switch pipe, second switch pipe, third switching tube and the 4th opens
The collector of Guan Guan, first switch pipe connect positive pole, and the emitting stage of first switch pipe is negative through second switch pipe connection power supply
Pole, the collector of first switch pipe is also successively through the 8th diode and the 5th capacitance connection power cathode, the 8th diode both ends
It is parallel with the 7th resistance, the emitting stage of the first switch pipe hair through the first inductance and the 7th capacitance and third switching tube successively
It penetrates grade to be connected, the 7th capacitance both ends are parallel with the 9th resistance, and the emitting stage of the third switching tube connects electricity through the 4th switching tube
Source cathode, the collector of third switching tube connect positive pole, the collector of third switching tube also successively through the 9th diode and
Four or six capacitance connection power cathodes, the 9th diode both ends are parallel with the 8th resistance.
Preferably, the sampling feedback device includes Hall voltage current sensor and sampling resistor.
Preferably, the driving chip uses IR21844S driving chips
The present invention utilizes PWM controller to generate pwm signal, warp by the output voltage and output current of acquisition alternating current filter
The conducting of driver for isolating driving switch pipe and closure, to adjust the size and frequency of output voltage；Driver for isolating uses
Photoelectrical coupler, making weak control circuit and strong electrical control circuit, there is no the connections on circuit, to realize to PWM controller
Protection；The thermal stress of switching tube and electric stress can be limited in safety operation area by buffer circuit, reduce the wave of switching tube
Voltage and surge current are gushed, the switching loss and electromagnetic interference of device is reduced, avoids the breakdown of device, improve the reliable of circuit
Property.
Description of the drawings
Fig. 1 is the principle of the present invention block diagram；
Fig. 2 is the circuit diagram of driver for isolating of the present invention；
Fig. 3 is the circuit diagram of buffer circuit of the present invention.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described embodiment
Only section Example of the invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Other all embodiments that art personnel are obtained without making creative work belong to the protection model of the present invention
It encloses.
As shown in Figure 1 to Figure 3, a kind of digital program controlled AC power based on PWM controller of the present invention, including according to
Secondary connected electromagnetic interface filter, uncontrollable rectifier device, DC filter, switching tube and alternating current filter, electromagnetic interface filter are used for defeated
The alternating voltage entered carries out low-pass filtering, high-frequency interferencing signal barrier is fallen, frequency signal when permission equipment being made to work normally
Into equipment, uncontrollable rectifier device is used to ac voltage rectifier be DC voltage, DC filter be used for smooth voltage or
Electric current input switch pipe, switching tube are used to direct current becoming alternating current, and alternating current filter is used to be filtered alternating voltage,
The alternating voltage of input is changed into after electromagnetic interface filter filters out high-frequency interferencing signal through uncontrollable rectifier device and DC filter
DC voltage, DC voltage is after switching tube is changed into alternating current, through alternating current filter output AC voltage, alternating current filter
Sampled ultramagnifier, PWM controller and driver for isolating are connected output end with switching tube successively, and sampling feedback device includes Hall electricity
Piezoelectricity flow sensor and sampling resistor, sampling feedback device are used to acquire the output voltage of alternating current filter, are adjusted through PWM controller
The duty ratio of output waveform, to adjust the size and frequency of output voltage, switching tube is also associated with buffer circuit, buffer circuit
For making the switching tube of switching tube be operated in safety operation area.
Driver for isolating includes photoelectrical coupler OSC1 and driving chip IC1, and in the present embodiment, driving chip IC1 is adopted
With IR21844S driving chip IC1, the input terminal of photoelectrical coupler OSC1 is through the output of the first potentiometer RP1 and PWM controller
End is connected, and the first output end of photoelectrical coupler OSC1 is connected through first resistor R1 with 7 pins of driving chip IC1, photoelectricity coupling
The second output terminal of clutch OSC1 is connected with 1 pin of driving chip IC1, and 1 pin of driving chip IC1 is also through the second potentiometer
RP2 is grounded, the 3 pin phases of 2 pins of driving chip IC1 successively through second resistance R2 and the second capacitance C2 and driving chip IC1
Even, second resistance R2 is also connected through the first diode D1 with 13 pins of driving chip IC1 with the common end of the second capacitance C2, drives
13 pins of dynamic chip IC 1 are connected through third capacitance C3 with 11 pins of driving chip IC1, and 13 pins of driving chip IC1 are also
It is connected successively with 5 pins of driving chip IC1 through the first diode D1 and the 4th capacitance C4,5 pins of driving chip IC1 connect
4 pins on ground, driving chip IC1 are connected through third potentiometer RP3 with 3 pins of driving chip IC1, and the 12 of driving chip IC1
Pin is connected through the second diode D2 with the gate pole of first switch pipe Q1, and the second both ends diode D2 are parallel with 3rd resistor R3,
The gate pole of first switch pipe Q1 is connected through the 4th resistance R4 with 11 pins of driving chip IC1, and the gate pole of first switch pipe Q1 is also
It is connected successively with 11 pins of driving chip IC1 through third diode D3 and the 4th diode D4, the current collection of first switch pipe Q1
Pole connects positive pole VCC, and the emitting stage of first switch pipe Q1 is connected with 11 pins of driving chip IC1, driving chip IC1's
1 pin is connected with the collector of second switch pipe Q2, the emitting stage ground connection of second switch pipe Q2, the gate pole warp of second switch pipe Q2
5th diode D5 is connected with 6 pins of driving chip IC1, and the 5th both ends diode D5 are parallel with the 5th resistance R5, and second opens
The gate pole of pipe Q2 is closed also through the 6th resistance R6 ground connection, the 6th both ends resistance R6 are parallel with by the 6th diode D6 and the 7th diode
The series circuit of D7 compositions, in the present embodiment, the 4th diode D4 and the 7th diode D7 are all made of zener diode, and first
Switching tube Q1 and second switch pipe Q2 are all made of IGBT.
The pwm signal that PWM controller generates is sent to driving chip IC1 after photoelectrical coupler OSC1 isolation so that weak
There is no the connections on circuit for electric control circuit and forceful electric power circuit, to realize the guarantor to driving chip IC1 and PWM controller
Shield, the first potentiometer EP1 is used to adjust the input Tu Fu of photoelectrical coupler OSC1 input terminals, to meet photoelectrical coupler OSC1 institutes
The input current needed, the second potentiometer RP2 is used to adjust the input signal amplitude of driving chip IC1, to meet driving chip
The normal work requirement of IC1, the 4th diode D4 and the 7th diode D7 are used to control gate pole-emitter voltage of switching tube, rise
To the purpose of protection IGBT and driving chip IC1.
Buffer circuit includes power supply U1, first switch pipe Q1, second switch pipe Q2, third switching tube Q3 and the 4th switching tube
The collector connection power supply U1 anodes of Q4, first switch pipe Q1, the emitting stage of first switch pipe Q1 is through the Q2 connections of second switch pipe
The collector of power supply U1 cathode, first switch pipe Q1 is also negative through the 8th diode D8 and the 5th capacitance C5 connection power supplys U1 successively
Pole, the 8th both ends diode D8 are parallel with the 7th resistance R7, and the emitting stage of first switch pipe Q1 is successively through the first inductance L1 and
Seven capacitance C7 are connected with the emitting stage of third switching tube Q3, and the 7th both ends capacitance C7 are parallel with the 9th resistance R9, third switching tube
For the emitting stage of Q3 through the 4th switching tube Q4 connection power supply U1 cathode, the collector connection power supply U1 of third switching tube Q3 is positive, the
The collector of three switching tube Q3 is also successively through the 9th diode D9 and four or six capacitance C6 connection power supply U1 cathode, the 9th diode D9
Both ends are parallel with the 8th resistance R8.
After switching tube pipeline section, the energy in the first inductance L1 passes through D9 pairs the 5th of the 8th resistance D8 and the 9th resistance respectively
Capacitance C5 and the 6th capacitance C6 chargings, until the terminal voltage of the 5th capacitance C5 and the 6th both ends capacitance C6 reach direct current supply voltage
Value；When switching tube is connected, the 5th capacitance C5 and the 6th capacitance C6 are respectively through the 7th resistance R7 and the 8th resistance R8 electric discharges, energy
By the 7th resistance R7 and the 8th resistance R8 consumption, if without buffer circuit, the energy in inductance will be switched on and off pipe consumption completely, because
This, buffer circuit alleviates the burden of switching tube.
The present invention can be adjusted output voltage, and switching tube can be made to be operated in safety operation area, reduce device
The switching loss and electromagnetic interference of part ensure that AC power is safely and reliably powered.
Claims (6)
1. a kind of digital program controlled AC power based on PWM controller, it is characterised in that：Including be sequentially connected electromagnetic interface filter,
Uncontrollable rectifier device, DC filter, switching tube and alternating current filter, the electromagnetic interface filter be used for the alternating voltage of input into
Row low-pass filtering falls high-frequency interferencing signal barrier, and frequency signal when permission equipment being made to work normally enters equipment, does not control whole
Device is flowed to be used to ac voltage rectifier be DC voltage, DC filter is used for smooth voltage or electric current input switch pipe,
Switching tube is used to direct current becoming alternating current, and alternating current filter is for being filtered alternating voltage, the alternating voltage of input
After electromagnetic interface filter filters out high-frequency interferencing signal, it is changed into DC voltage, direct current through uncontrollable rectifier device and DC filter
Pressure is after switching tube is changed into alternating current, and through alternating current filter output AC voltage, the output end of alternating current filter is successively through adopting
Sample ultramagnifier, PWM controller and driver for isolating are connected with switching tube, and the switching tube is also associated with buffer circuit, buffering electricity
Road is for making the switching tube of switching tube be operated in safety operation area.
2. a kind of digital program controlled AC power based on PWM controller as described in claim 1, it is characterised in that：It is described every
Include photoelectrical coupler and driving chip from driver, the input terminal of the photoelectrical coupler is controlled through the first potentiometer and PWM
The output end of device is connected, and the first output end of photoelectrical coupler is connected through first resistor with 7 pins of driving chip, photoelectric coupling
The second output terminal of device is connected with 1 pin of driving chip, and 1 pin of driving chip is also grounded through the second potentiometer, drives core
2 pins of piece are connected through second resistance and the second capacitance with 3 pins of driving chip successively, the second resistance and the second capacitance
Common end be also connected with 13 pins of driving chip through the first diode, 13 pins of driving chip are through third capacitance and driving
11 pins of chip are connected, 13 pins of driving chip 5 drawing also successively through the first diode and the 4th capacitance and driving chip
Foot is connected, the 5 pins ground connection of driving chip, 3 pin phases of 4 pins through third potentiometer with driving chip of the driving chip
Even, 12 pins of driving chip are connected through the second diode with the gate pole of first switch pipe, and the second diode both ends are parallel with the
The gate pole of three resistance, first switch pipe is connected through the 4th resistance with 11 pins of driving chip, the gate pole of first switch pipe also according to
It is secondary to be connected with 11 pins of driving chip through third diode and the 4th diode, the collector connection electricity of the first switch pipe
Source anode, the emitting stage of first switch pipe are connected with 11 pins of driving chip, 1 pin and second switch of the driving chip
The collector of pipe is connected, and the emitting stage ground connection of second switch pipe, the gate pole of second switch pipe is through the 5th diode and driving chip
6 pins be connected, the 5th diode both ends are parallel with the 5th resistance, and the gate pole of second switch pipe is also through the 6th resistance eutral grounding, the
Six resistance both ends are parallel with the series circuit being made of the 6th diode and the 7th diode.
3. a kind of digital program controlled AC power based on PWM controller as claimed in claim 2, it is characterised in that：Described
Four diodes and the 7th diode are all made of zener diode, and the first switch pipe and second switch pipe are all made of IGBT.
4. a kind of digital program controlled AC power based on PWM controller as claimed in claim 3, it is characterised in that：It is described slow
It includes power supply, first switch pipe, second switch pipe, third switching tube and the 4th switching tube, the current collection of first switch pipe to rush circuit
Pole connects positive pole, and the emitting stage of first switch pipe connects power cathode, the collector of first switch pipe through second switch pipe
Also successively through the 8th diode and the 5th capacitance connection power cathode, the 8th diode both ends are parallel with the 7th resistance, and described
The emitting stage of one switching tube is connected through the first inductance and the 7th capacitance with the emitting stage of third switching tube successively, the 7th capacitance both ends
It is parallel with the 9th resistance, the emitting stage of the third switching tube connects power cathode, the collection of third switching tube through the 4th switching tube
Electrode connects positive pole, the collector of third switching tube also successively through the 9th diode and four or six capacitance connection power cathodes,
9th diode both ends are parallel with the 8th resistance.
5. a kind of digital program controlled AC power based on PWM controller as claimed in claim 4, it is characterised in that：It is described to adopt
Sample ultramagnifier includes Hall voltage current sensor and sampling resistor.
6. a kind of digital program controlled AC power based on PWM controller as claimed in claim 5, it is characterised in that：The drive
Dynamic chip uses IR21844S driving chips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711488147.XA CN108322060A (en) | 2017-12-29 | 2017-12-29 | A kind of digital program controlled AC power based on PWM controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711488147.XA CN108322060A (en) | 2017-12-29 | 2017-12-29 | A kind of digital program controlled AC power based on PWM controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108322060A true CN108322060A (en) | 2018-07-24 |
Family
ID=62893706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711488147.XA Withdrawn CN108322060A (en) | 2017-12-29 | 2017-12-29 | A kind of digital program controlled AC power based on PWM controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108322060A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108880204A (en) * | 2018-09-03 | 2018-11-23 | 顺德职业技术学院 | Chaotic frequency modulation digital switch power control circuit based on FPGA |
| CN109193918A (en) * | 2018-09-12 | 2019-01-11 | 苏州汇川联合动力系统有限公司 | Backup battery, drive control device and electric car |
| CN109264316A (en) * | 2018-10-29 | 2019-01-25 | 安徽中科光电色选机械有限公司 | A kind of more vibrator control devices of color selector |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2251856Y (en) * | 1995-11-23 | 1997-04-09 | 韦小贵 | Small-sized large power switch inverter medium, high frequency magnetic induction heating apparatus |
| CN101777839A (en) * | 2009-01-08 | 2010-07-14 | 中国电子为华实业发展有限公司 | Switch power supply device applying piezoelectric transformer |
| CN102281010A (en) * | 2010-06-12 | 2011-12-14 | 成都熊谷加世电器有限公司 | High-power single-loop contravariance soft switching arc welding power supply |
| CN102983747A (en) * | 2012-12-04 | 2013-03-20 | 大连海事大学 | Full-bridge combined soft switching DC (direct-current) converter |
| CN103973153A (en) * | 2013-02-05 | 2014-08-06 | 新疆大学 | High-power numerical control pulse frequency modulation power supply of electric arc cutting machine tool |
| CN204190628U (en) * | 2014-10-15 | 2015-03-04 | 国家电网公司 | A kind of variable-frequency resonance power source being applied to alternating-current voltage resistance test device |
| CN104822217A (en) * | 2015-05-05 | 2015-08-05 | 浙江开元光电照明科技有限公司 | Electrodeless fluorescent lamp dimming method controlling duty ratio by double-frequency square wave pulse signal generator |
| CN204597786U (en) * | 2015-05-22 | 2015-08-26 | 王太鑫 | A kind of variable frequency power supply based on IGBT |
| CN205210590U (en) * | 2015-09-24 | 2016-05-04 | 中国航天科技集团公司烽火机械厂 | Fault tolerant system is closed to electric steering engine dual supply |
| CN107064938A (en) * | 2016-11-28 | 2017-08-18 | 中国船舶重工集团公司第七0研究所 | A kind of low-power consumption sonar altimeter |
| CN107276424A (en) * | 2017-07-07 | 2017-10-20 | 佛山领新信息科技有限公司 | A kind of variable-frequency power sources control system |
-
2017
- 2017-12-29 CN CN201711488147.XA patent/CN108322060A/en not_active Withdrawn
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2251856Y (en) * | 1995-11-23 | 1997-04-09 | 韦小贵 | Small-sized large power switch inverter medium, high frequency magnetic induction heating apparatus |
| CN101777839A (en) * | 2009-01-08 | 2010-07-14 | 中国电子为华实业发展有限公司 | Switch power supply device applying piezoelectric transformer |
| CN102281010A (en) * | 2010-06-12 | 2011-12-14 | 成都熊谷加世电器有限公司 | High-power single-loop contravariance soft switching arc welding power supply |
| CN102983747A (en) * | 2012-12-04 | 2013-03-20 | 大连海事大学 | Full-bridge combined soft switching DC (direct-current) converter |
| CN103973153A (en) * | 2013-02-05 | 2014-08-06 | 新疆大学 | High-power numerical control pulse frequency modulation power supply of electric arc cutting machine tool |
| CN204190628U (en) * | 2014-10-15 | 2015-03-04 | 国家电网公司 | A kind of variable-frequency resonance power source being applied to alternating-current voltage resistance test device |
| CN104822217A (en) * | 2015-05-05 | 2015-08-05 | 浙江开元光电照明科技有限公司 | Electrodeless fluorescent lamp dimming method controlling duty ratio by double-frequency square wave pulse signal generator |
| CN204597786U (en) * | 2015-05-22 | 2015-08-26 | 王太鑫 | A kind of variable frequency power supply based on IGBT |
| CN205210590U (en) * | 2015-09-24 | 2016-05-04 | 中国航天科技集团公司烽火机械厂 | Fault tolerant system is closed to electric steering engine dual supply |
| CN107064938A (en) * | 2016-11-28 | 2017-08-18 | 中国船舶重工集团公司第七0研究所 | A kind of low-power consumption sonar altimeter |
| CN107276424A (en) * | 2017-07-07 | 2017-10-20 | 佛山领新信息科技有限公司 | A kind of variable-frequency power sources control system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108880204A (en) * | 2018-09-03 | 2018-11-23 | 顺德职业技术学院 | Chaotic frequency modulation digital switch power control circuit based on FPGA |
| CN109193918A (en) * | 2018-09-12 | 2019-01-11 | 苏州汇川联合动力系统有限公司 | Backup battery, drive control device and electric car |
| CN109264316A (en) * | 2018-10-29 | 2019-01-25 | 安徽中科光电色选机械有限公司 | A kind of more vibrator control devices of color selector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102946199B (en) | DC-isolation buck converter and busbar voltage testing circuit thereof | |
| CN107124163B (en) | Composite mode solid-state pulse source | |
| CN102628889A (en) | Voltage sampling circuit | |
| CN203840210U (en) | AC inverter circuit | |
| CN105703614A (en) | Anti-reverse-connection and anti-backward-flow protective circuit | |
| CN108322060A (en) | A kind of digital program controlled AC power based on PWM controller | |
| CN103580461B (en) | A kind of power supply exports discharge circuit | |
| CN203086345U (en) | Power converting device | |
| CN102510222A (en) | High voltage switch power supply circuit having power factor correcting function | |
| CN105636273A (en) | LED driving circuit compatible with electronic rectifier and mains supply | |
| CN102833902B (en) | Booster type constant current driver circuit for LED | |
| CN108880393A (en) | Interleaved PFC control circuit and motor-drive circuit | |
| CN104967326A (en) | Single-line constant-current to constant-voltage electric energy conversion circuit | |
| CN202334313U (en) | High-voltage switch power supply circuit with power-factor correction function | |
| CN109568788A (en) | A kind of output power adjusting circuit and frequency spectrograph | |
| CN104218535A (en) | An active PFC over-current protection circuit | |
| CN108809197A (en) | Interleaved PFC control circuit and motor-drive circuit | |
| CN106887904A (en) | A kind of wireless electric energy transmission device with overvoltage protection | |
| CN205491311U (en) | LED drive circuit of compatible electronic rectifier and commercial power | |
| CN202889180U (en) | AC (Alternating Current) and DC (Direct Current) input self-adaptive circuit | |
| CN106911255A (en) | A kind of power supply adaptor | |
| CN107634669A (en) | The power circuit and its control method of position-sensor-free permagnetic synchronous motor | |
| CN207819747U (en) | A kind of three level IGBT drive circuit devices | |
| CN209198534U (en) | A kind of zero cross detection circuit and device | |
| CN207732657U (en) | A kind of safety-type Switching Power Supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180724 |