CN106208768A - The parallel circuit of high power digital ballast AC/DC power module - Google Patents
The parallel circuit of high power digital ballast AC/DC power module Download PDFInfo
- Publication number
- CN106208768A CN106208768A CN201610556841.XA CN201610556841A CN106208768A CN 106208768 A CN106208768 A CN 106208768A CN 201610556841 A CN201610556841 A CN 201610556841A CN 106208768 A CN106208768 A CN 106208768A
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- Prior art keywords
- circuit
- power module
- output
- boost
- high power
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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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc 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 triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc 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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/23—Conversion of ac power input into dc 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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only arranged for operation in parallel
-
- 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
- H02M1/14—Arrangements for reducing ripples from dc input or output
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses the parallel circuit of a kind of high power digital ballast AC/DC power module, including: EMI low-pass filter circuit, rectification circuit, Boost circuit, simultaneous equation circuit, control circuit, zero current cross signal deteching circuit, voltage signal sampling circuit；Wherein, EMI low-pass filter circuit exports to rectification circuit and Boost circuit, zero current cross signal deteching circuit and voltage signal sampling circuit output to control circuit, control circuit totem pole output PWM drive signal is to Boost circuit, and Boost circuit boosts to the output of simultaneous equation circuit.Present invention accomplishes the power supply power demands of high power digital electric ballast, inductor design volume metal-oxide-semiconductor electric current big, single can be solved simultaneously do a series of problems such as disaster according to the AC/DC power module of different current needs parallel connection varying numbers.
Description
Technical field
The present invention relates to Basic fundamentals of power electronics circuit, especially, relate to a kind of high power digital ballast exchange and turn direct current
The parallel circuit of power module.
Background technology
The circuit used in parallel of AC/DC power module, when referring to need AC/DC power to export big electric current,
Simultaneously in parallel multiple wait voltages, etc. the electric current superposition that makes it export of internal resistance AC/DC power module meet and export electric current.
Output in AC/DC power module terminates the output of simultaneous equation circuit, and the electric current solving to export unbalanced generation pours in down a chimney existing
As.
AC/DC power circuit is divided into CCM electric current continuous, DCM electric current not to connect according to the working condition of input current
Ideotype, CRM critical conduction mode, several types.And this several types single power module work output electric current all can not meet big merit
The demand of rate.
Referring to Fig. 1, the switching frequency of existing CCM electric current continuous AC/DC power circuit is fixing, week
Phase, T was constant, and dutycycle changes along with the change of input voltage, by the electric current of PFC inductance and MOS at the half of AC line voltage distribution
In the individual cycle, any moment is all not zero, and the moment follows the variation track of voltage, and its average current AC is sine wave, and keeps
With ac input voltage same phase.Owing to its inductive current will not drop to zero, it is less that inductive drop changes little harmonic wave IIR thermal losses,
There is less electromagnetic interference, owing to the amplitude of variation of electric current is little, compare and also have less core loss.Owing to MOS conducting does not exists
The when that inductive current being zero, the reverse recovery current of diode can produce the biggest switch stress, needs with snap back extensive
Multiple diode is to reduce loss.
Referring to Fig. 2, the feature of existing DCM electric current discontinuous type AC/DC power circuit is to utilize two switches
There is dead band in the inductive current between the cycle.Need to provide the feedback detection information of a current zero-crossing point to control circuit, by
In it turns on when, electric current is zero, and the requirement to diode is relatively low.Under same average current input, DCM needs higher
Peak inductive current.Owing to its curent change amplitude is relatively big, peak value is higher, and inductance has bigger magnetic core, and I2R thermal losses is relatively
Greatly, total harmonic distortion is bigger.Major advantage is front end electromagnetic interface filter can be made to set with fixed frequency to limit maximum switching frequency
Meter is simplified.
CRM critical conduction mode input current, in critical point both continuously and discontinuously, is to need to provide one to control circuit equally
The feedback detection information of individual current zero-crossing point, CRM mode frequency is variable, and electric current is almost without power-off, and electric current reduces to metal-oxide-semiconductor when zero
Conducting, when electric current is not reaching to the parameter value set, metal-oxide-semiconductor turns off, and input current follows input voltage change.The feature of CRM
Being switching frequency change, and frequency is the highest when sine voltage zero passage, the switching frequency at sinusoidal voltage peak value is minimum, and one
Electric current in denier boost inductor drops to zero, and new switch periods the most then starts, and there is not electric current dead band.CRM lacks
Point switching frequency near sinusoidal zero passage is at a relatively high, and frequency change makes EMI ratio more serious.
Summary of the invention
Little in order to solve AC/DC power power in prior art, power device cannot meet a difficult problem for demand, this
Invention provides a kind of multiple AC/DC power wired in parallel circuit, for high power digital ballast, thus meets
The demand of great-power electronic ballast High-current output power.
For achieving the above object, the present invention provides the parallel connection of a kind of high power digital ballast AC/DC power module
Circuit, including: EMI low-pass filter circuit, rectification circuit, Boost circuit, simultaneous equation circuit, control circuit, zero current cross are believed
Number testing circuit, voltage signal sampling circuit；Wherein, the output of described EMI low-pass filter circuit is to described rectification circuit and described
Boost circuit, described zero current cross signal deteching circuit and the output of described voltage signal sampling circuit are to described control circuit, institute
Stating control circuit totem pole output PWM drive signal extremely described Boost circuit, described Boost circuit boosts to described synchronization and puts down
Weighing apparatus circuit output.
Further, described EMI low-pass filter circuit is common mode, the Conduction Interference wave filter of differential mode composition.
Further, described wave filter is pi filter.
Further, described zero current cross testing circuit synchronizes described control circuit, according to synchronizing signal output pwm signal
The conducting driving Boost metal-oxide-semiconductor makes input current can follow the tracks of the change of input voltage.
Further, described control circuit exports the driving of PWM pulse width signal for gathering voltage signal after current signal
The switch of Boost metal-oxide-semiconductor.
Further, described simultaneous equation circuit is diode one-way synchronization balanced output circuit.
Further, described voltage signal sampling circuit passes through sampled voltage signal constant output voltage.
The method have the advantages that
Present invention accomplishes the power supply power demands of high power digital electric ballast, can according to different current needs also
The AC/DC power module of connection varying number, solves inductor design volume metal-oxide-semiconductor electric current big, single simultaneously and does disaster etc.
A series of problem.
Accompanying drawing explanation
Below with reference to figure, the present invention is further detailed explanation.The accompanying drawing of the part constituting the application is used for
Thering is provided a further understanding of the present invention, the schematic description and description of the present invention is used for explaining the present invention, is not intended that
Inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is existing CCM electric current continuous electrical schematic diagram；
Fig. 2 is existing DCM electric current discontinuous type electrical schematic diagram；
Fig. 3 be the present invention a kind of for high-power in the CRM critical conduction mode parallel circuit figure of fishing gathering lamp digital ballast；
Fig. 4 is zero current cross signal deteching circuit circuit diagram of the present invention；
Fig. 5 is EMI low-pass filter circuit circuit figure of the present invention；
Fig. 6 is voltage signal sampling circuit figure of the present invention；
Fig. 7 is three CRM critical conduction mode PFC power module parallel circuit figures of the present invention；
Fig. 8 is control circuit circuit diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail.
Referring to Fig. 3, the parallel circuit for power digital ballast AC/DC power module of the present invention is applied to one
Plant the CRM critical conduction mode parallel circuit figure of high-power fishing gathering lamp digital ballast 3.This parallel circuit includes EMI low-pass filtering electricity
Road 1, rectification circuit 2, Boost circuit, simultaneous equation circuit 8, control circuit 4, zero current cross signal deteching circuit 6, voltage letter
Number sample circuit 7；Wherein, the output of described EMI low-pass filter circuit 1 is to described rectification circuit 2 and described Boost circuit, described
Zero current cross signal deteching circuit 6 and the output of described voltage signal sampling circuit 7 are to described control circuit 4, described control circuit 4
Totem pole output PWM drive signal is to described Boost circuit, and it is defeated that described Boost circuit boosts to described simultaneous equation circuit 8
Go out.
As shown in Figure 4, zero current cross testing circuit 6 synchronization control circuit 4, according to this for zero current cross signal deteching circuit 6
Synchronizing signal output pwm signal drives the conducting of Boost metal-oxide-semiconductor to make input current can follow the tracks of the change of input voltage.R is connected on
The secondary side of inductance, detects inductive current, i.e. external power flows into the electric current of load, through the 5 of C lead-edge-blanking to 4863-2
Foot.When inductive current is zero, the output switching activity of ZCD, rest-set flip-flop set 7 foot in inside is exported high level, makes Q turn on, outward
Power supply passes through bridge rectifier, makes primary side and the Q conducting of inductance, and electric current flows through inductance primary side, by electrical power storage inductance.
EMI low-pass filter circuit 1 as it is shown in figure 5, EMI low-pass filter circuit 1 be common mode, differential mode composition Conduction Interference filter
Ripple device, this EMI low-pass filtering can use pi filter.L2 is common mode inductance, and L2, for common-mode noise, is equivalent to one
The very inductance of big inductance quantity, therefore it can suppress common mode conducted noise effectively.C4, C5, common-mode noise is played the effect of bypass,
C1, C2, differential mode noise is played inhibitory action.L3 is differential mode inductance, and the introducing of differential mode inductance makes the electricity electric current that rushes of electric capacity C3 reduce,
Reach to suppress the purpose of differential mode noise.
As shown in Figure 6, voltage signal sampling circuit 7 is by sampled voltage signal constant output for voltage signal sampling circuit 7
Voltage.PFC output voltage filters the voltage amplifier of 4863-2 through RP1, RP2, RP3, RP4 dividing potential drop CP2, inputs with by 3 feet
Voltage value be multiplied in multiplier, multiplier output with by 4 feet input Q electric current compared with.Work as overtension
Time OVR can play protective effect, the output level of overvoltage protector overturns, and by rest-set flip-flop reset, turns off Q.
Simultaneous equation circuit 8 is as it is shown in fig. 7, described simultaneous equation circuit 8 is diode one-way synchronization balanced output circuit.
By front stage circuits CRM power module A to simultaneous equation circuit C1-C2 voltage filter, R1, R2 Compositional balance C1-C2 works charge and discharge
Discharge circuit after electricity and shutdown, through the electric current caching balance that D1, D2 parallel connection unilateal conduction synchronism output to C7, C8, R7, R8 forms
Circuit powering load, by front stage circuits CRM power module B to simultaneous equation circuit C3, C4, voltage filter, R3, R4 composition is flat
Discharge circuit after weighing apparatus C3, C4 work discharge and recharge and shutdown, through D3, D4 parallel connection unilateal conduction synchronism output to C9, C10, R9, R11
The current buffering balancing circuitry powering load of composition, by front stage circuits CRM power module C to simultaneous equation circuit C5, C6 electricity
Filter pressing ripple, discharge circuit after R5, R6 Compositional balance C5, C6 work discharge and recharge and shutdown, synchronize defeated through D5, D6 parallel connection unilateal conduction
Go out the current balance circuit powering load to C11, C12, R10, R12 composition, CRM power module A, CRM power module B, CRM
Power module C to simultaneous equation circuital current superposition output to load supplying, D1, D2, D3, D4, D5, D6 and C7, C8, C9,
It is uneven produced that C10, C11, C12, R7, R8, R9, R11, R10, R12 play three PFC power module output current of synchronization
Electric current pours in down a chimney phenomenon, balances the load of each AC/DC power circuit.
As shown in Figure 8, control circuit 4 exports PWM pulse width signal for gathering voltage signal after current signal to control circuit 4
Drive the switch of Boost metal-oxide-semiconductor.Control circuit 4 is CRM critical conduction mode circuit, is specifically formed power factor by 4863-2
Correcting circuit, by peripheral circuit current sampling circuit, voltage sampling circuit, zero current cross testing circuit, the signal warp that gathered
4863-2 internal arithmetic amplifier, multiplier, trigger control 7 foot output pwm signals and drive booster circuit metal-oxide-semiconductor switch, come
Realize boosting, make input current follow input voltage change so that power factor reach 1.000. due to 4863-2 power because of
Number correction circuit structure is prior art, just repeats no more.
In sum, by present invention accomplishes the power supply power demands of high power digital electric ballast, can be according to not
The AC/DC power module of same current needs parallel connection varying number, solves inductor design volume MOS big, single simultaneously
Tube current does a series of problems such as disaster.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention；Skill for this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, that is made any repaiies
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (7)
1. the parallel circuit of a high power digital ballast AC/DC power module, it is characterised in that including:
EMI low-pass filter circuit, rectification circuit, Boost circuit, simultaneous equation circuit, control circuit, zero current cross signal detection
Circuit, voltage signal sampling circuit；Wherein, the output of described EMI low-pass filter circuit is to described rectification circuit and described Boost electricity
Road, described zero current cross signal deteching circuit and the output of described voltage signal sampling circuit are to described control circuit, described control
Circuit totem pole output PWM drive signal is to described Boost circuit, and described Boost circuit boosts to described simultaneous equation circuit
Output.
The parallel circuit of high power digital ballast AC/DC power module the most according to claim 1, its feature
It is:
Described EMI low-pass filter circuit is common mode, the Conduction Interference wave filter of differential mode composition.
The parallel circuit of high power digital ballast AC/DC power module the most according to claim 2, its feature
It is:
Described wave filter is pi filter.
The parallel circuit of high power digital ballast AC/DC power module the most according to claim 1, its feature
It is:
Described zero current cross testing circuit synchronizes described control circuit, drives Boost MOS according to synchronizing signal output pwm signal
The conducting of pipe makes input current can follow the tracks of the change of input voltage.
The parallel circuit of high power digital ballast AC/DC power module the most according to claim 1, its feature
It is:
Described control circuit is to gather voltage signal to export opening of PWM pulse width signal driving Boost metal-oxide-semiconductor after current signal
Close.
The parallel circuit of high power digital ballast AC/DC power module the most according to claim 1, its feature
It is:
Described simultaneous equation circuit is diode one-way synchronization balanced output circuit.
The parallel circuit of high power digital ballast AC/DC power module the most according to claim 1, its feature
It is:
Described voltage signal sampling circuit passes through sampled voltage signal constant output voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610556841.XA CN106208768A (en) | 2016-07-13 | 2016-07-13 | The parallel circuit of high power digital ballast AC/DC power module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610556841.XA CN106208768A (en) | 2016-07-13 | 2016-07-13 | The parallel circuit of high power digital ballast AC/DC power module |
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| Publication Number | Publication Date |
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| CN106208768A true CN106208768A (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610556841.XA Pending CN106208768A (en) | 2016-07-13 | 2016-07-13 | The parallel circuit of high power digital ballast AC/DC power module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107072020A (en) * | 2017-02-06 | 2017-08-18 | 珠海美光原科技股份有限公司 | A kind of single-stage HID digital ballast circuits based on piezoelectric transformer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101682972A (en) * | 2007-05-11 | 2010-03-24 | 卢特龙电子公司 | Electronic ballast having a boost converter with an improved range of output power |
| US20110304279A1 (en) * | 2010-06-09 | 2011-12-15 | General Electric Company | Open circuit voltage clamp for electronic hid ballast |
| CN202404517U (en) * | 2011-09-16 | 2012-08-29 | 惠州市纳伟仕视听科技有限公司 | Built-in switch power supply of all-in-one computer |
| CN104066247A (en) * | 2014-06-24 | 2014-09-24 | 浙江生辉照明有限公司 | Drive circuit and dimming control method for LED lighting device |
| CN105449777A (en) * | 2015-12-30 | 2016-03-30 | 易事特集团股份有限公司 | Charging pile for charging electric vehicle |
| CN205212520U (en) * | 2015-12-24 | 2016-05-04 | 成都海讯科技实业有限公司 | Active power filter energy storage circuit |
-
2016
- 2016-07-13 CN CN201610556841.XA patent/CN106208768A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101682972A (en) * | 2007-05-11 | 2010-03-24 | 卢特龙电子公司 | Electronic ballast having a boost converter with an improved range of output power |
| US20110304279A1 (en) * | 2010-06-09 | 2011-12-15 | General Electric Company | Open circuit voltage clamp for electronic hid ballast |
| CN202404517U (en) * | 2011-09-16 | 2012-08-29 | 惠州市纳伟仕视听科技有限公司 | Built-in switch power supply of all-in-one computer |
| CN104066247A (en) * | 2014-06-24 | 2014-09-24 | 浙江生辉照明有限公司 | Drive circuit and dimming control method for LED lighting device |
| CN205212520U (en) * | 2015-12-24 | 2016-05-04 | 成都海讯科技实业有限公司 | Active power filter energy storage circuit |
| CN105449777A (en) * | 2015-12-30 | 2016-03-30 | 易事特集团股份有限公司 | Charging pile for charging electric vehicle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107072020A (en) * | 2017-02-06 | 2017-08-18 | 珠海美光原科技股份有限公司 | A kind of single-stage HID digital ballast circuits based on piezoelectric transformer |
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Application publication date: 20161207 |