CN110022060A - A kind of hybrid modulation method and its implementation - Google Patents
A kind of hybrid modulation method and its implementation Download PDFInfo
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- CN110022060A CN110022060A CN201910202761.8A CN201910202761A CN110022060A CN 110022060 A CN110022060 A CN 110022060A CN 201910202761 A CN201910202761 A CN 201910202761A CN 110022060 A CN110022060 A CN 110022060A
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Classifications
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- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators
-
- 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
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The present invention relates to a kind of hybrid modulation method, this method are as follows: predetermined pulse width limits value；When required pulse width be greater than or equal to pulse width when, the switching frequency of fixed pulse signal, change pulse signal pulsewidth by way of modulated pulse signal duty ratio；When required pulse width be less than pulse width when, the pulsewidth of fixed pulse signal, change pulse signal switching frequency by way of modulated pulse signal duty ratio.The present invention also provides a kind of implementation methods of above-mentioned hybrid modulation method.The present invention solve the problems, such as in system that input quantity and output quantity are close or be lightly loaded equal duty ratio compared with it is small when switching loss accounting it is big, so as to greatly improve system effectiveness.
Description
Technical field
The invention belongs to power electronics, field of power supplies, and in particular to a kind of hybrid modulation method and the mixing debugging side
The implementation method of method.
Background technique
The control of power supply generallys use pulse width modulation at present.This mode can be convenient by modulation duty cycle
Control input or output quantity (including voltage, electric current, power etc.).But the method disadvantage is that switching frequency is fixed, and works as input
When amount and output quantity be very close and load very little, pulse width is also very small, and big portion's loss all concentrates on switch damage at this time
Consumption, so that improving transfer efficiency under above-mentioned operating condition becomes extremely difficult.
Summary of the invention
The smaller Shi Kaiguan of equal duty ratio is approached or is lightly loaded the object of the present invention is to provide a kind of solution input quantity and output quantity
The big disadvantage of accounting is lost, improves the hybrid modulation method of system effectiveness.
In order to achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of hybrid modulation method, for the duty ratio of modulated pulse signal, the hybrid modulation method are as follows: predetermined pulse width
Limits value；When required pulse width is greater than or equal to the pulse width, pass through opening for the fixation pulse signal
Close frequency, the mode for the pulsewidth for changing the pulse signal modulates the duty ratio of the pulse signal；When required pulse width is small
When the pulse width, pass through the pulsewidth of the fixation pulse signal, the switching frequency of the change pulse signal
Mode modulate the duty ratio of the pulse signal.
When required pulse width is greater than or equal to the pulse width, the pulsewidth of the pulse signal is equal to institute
Required pulse width is stated, the switch periods of the pulse signal are equal to most short switch periods；Described in being less than when required pulse width
When pulse width, the pulsewidth of the pulse signal is equal to the pulse width, is limited according to the pulse width
Value processed and required duty ratio calculate the switch periods of the pulse signal.
The present invention also provides a kind of implementation method of above-mentioned hybrid modulation method, the implementation methods are as follows: setting variate-value,
Compared with switch periods fiducial value corresponding with the switch periods of the pulse signal, pulsewidth corresponding with the required pulse width
Value and the corresponding minimum pulse width limits value of the pulse width, maximum switch corresponding with the most short switch periods
Periodic quantity；
The variate-value is linearly increasing, and the clearing when the variate-value increases to the switch periods fiducial value then proceedes to line
Property increase；
When the pulsewidth fiducial value is greater than or equal to the minimum pulse width limits value, pulse width is enabled to compare given value equal to institute
Pulsewidth fiducial value is stated, then during the variate-value is linearly increasing, the switch periods fiducial value is equal to the maximum and opens
Periodic quantity is closed, high level/low level is exported when the pulse width compares given value less than the variate-value, when the pulse
Low level/high level is exported when width compares given value more than or equal to the variate-value, to form the pulse signal；
When the pulsewidth fiducial value is less than the minimum pulse width limits value, pulse width is enabled to compare given value equal to the minimum
Pulsewidth limits value, the then during variate-value is linearly increasing, according to the minimum pulse width limits value and required duty ratio
The current desired switch periods fiducial value is obtained, then during the variate-value is linearly increasing, when the pulse is wide
High level/low level is exported when degree compares given value less than the variate-value, when the pulse width compare given value be greater than or
Low level/high level is exported when equal to the variate-value, to form the pulse signal.
Due to the above technical solutions, the present invention has the following advantages over the prior art: the present invention solves is
In system input quantity and output quantity it is close or be lightly loaded equal duty ratio it is smaller when the big problem of switching loss accounting, so as to mention significantly
High system effectiveness.
Detailed description of the invention
Attached drawing 1 is waveform diagram involved in hybrid modulation method and its implementation of the invention.
Specific embodiment
The invention will be further described for embodiment shown in reference to the accompanying drawing.
Embodiment one: a kind of hybrid modulation method for pulse signal duty ratio needed for modulating system, the hybrid modulation
Method are as follows: predetermined pulse width limits value；When required pulse width is greater than or equal to pulse width, pass through fixed arteries and veins
Rush signal switching frequency, change pulse signal pulsewidth mode modulated pulse signal duty ratio；When required pulse width
When less than pulse width, the pulsewidth of fixed pulse signal, change pulse signal switching frequency by way of modulate
The duty ratio of pulse signal.
Specifically, when required pulse width PW is long more than or equal to any time that pulse width X(X is greater than 0
Degree) when, the pulsewidth of pulse signal is equal to required pulse width PW, and the switch periods of pulse signal are equal to most short switch periods T1.
When required pulse width PW is less than pulse width X, the pulsewidth of pulse signal is equal to pulse width X, according to
Pulse width X and required duty ratio calculate the switch periods of pulse signal.
Such as: most short switch periods T1 is set as 20 microseconds, pulse width X is set as 2 microseconds, if this clock pulse
Rushing width PW demand is 4 microseconds, then the duty ratio of pulse signal is equal to PW/T1=4/20=0.2 at this time.If pulse at this time is wide again
Degree PW demand is 1 microsecond, and the duty ratio of demand is equal to 1/20=0.05, because pulse width PW demand is less than required pulse at this time
Width PX, so it is 2 delicate that the pulsewidth of fixed pulse signal, which is equal to X,.But duty ratio at this time is calculated by most short switch periods T1 and is
0.1 is not the 0.05 of demand, and 0.05 duty ratio obtains the switch of demand by increasing cycle T time span in order to obtain
Cycle T 2, T2 be equal to T1/PW*X=20/1*2=40, so when switch periods T give the microsecond of T2=40, the pulsewidth of pulse signal
It is given as 2 microseconds, duty ratio D=PW/T2=2/40=0.05.From the above analysis, in the case where X is fixed, PW demand is smaller,
Its switch periods T is longer, and switching frequency is also lower.Because switching loss is directly proportional to switching frequency, at light load can
Enough increase substantially transfer efficiency.
Referring to figure 1, the implementation method of above-mentioned hybrid modulation method are as follows: setting variate-value (can be voltage, count
The counting etc. of device) and the corresponding switch periods fiducial value of switch periods of pulse signal, pulsewidth corresponding with required pulse width
Fiducial value and the corresponding minimum pulse width limits value of pulse width, maximum switch periods corresponding with most short switch periods
Value.
Variate-value is linearly increasing, and the clearing when variate-value increases to switch periods fiducial value then proceedes to linearly increasing.
When pulsewidth fiducial value is greater than or equal to minimum pulse width limits value, pulse width is enabled to compare given value equal to peak pulse duration
Compared with value, then during variate-value is linearly increasing, switch periods fiducial value is equal to maximum switch periods value, works as pulse width ratio
High level/low level is exported when being less than variate-value compared with given value, when pulse width compares given value more than or equal to variate-value
Low level/high level is exported, to form pulse signal.
When pulsewidth fiducial value is less than minimum pulse width limits value, enables pulse width compare given value and limited equal to minimum pulse width
Value obtains current desired open according to minimum pulse width limits value and required duty ratio then during variate-value is linearly increasing
Close period fiducial value, then during variate-value is linearly increasing, the output when pulse width compares given value less than variate-value
High level/low level exports low level/high level when pulse width compares given value more than or equal to variate-value, thus shape
At pulse signal.
The technical program solves power supply is close with output in input, and underloading equal duty ratio hour switching loss accounting is big etc.
Disadvantage substantially increases power supply overall conversion efficiency.Applied to MPPT(maximal power tracing in photovoltaic DC-to-AC converter)
In Boost, highest transfer efficiency improves 0.3 percentage point under the operating conditions such as underloading.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (3)
1. a kind of hybrid modulation method, the duty ratio for modulated pulse signal, it is characterised in that: the hybrid modulation method
Are as follows: predetermined pulse width limits value；When required pulse width is greater than or equal to the pulse width, pass through fixed institute
The mode of the switching frequency, the pulsewidth for changing the pulse signal of stating pulse signal modulates the duty ratio of the pulse signal；When
When required pulse width is less than the pulse width, by the pulsewidth of the fixation pulse signal, change the pulse
The mode of the switching frequency of signal modulates the duty ratio of the pulse signal.
2. hybrid modulation method according to claim 1, it is characterised in that: described in being greater than or equal to when required pulse width
When pulse width, the pulsewidth of the pulse signal is equal to the required pulse width, the switch week of the pulse signal
Phase is equal to most short switch periods；When required pulse width is less than the pulse width, the pulsewidth of the pulse signal
Equal to the pulse width, opening for the pulse signal is calculated according to the pulse width and required duty ratio
Close the period.
3. a kind of implementation method of hybrid modulation method as claimed in claim 2, it is characterised in that: the implementation method are as follows:
Variate-value, switch periods fiducial value corresponding with the switch periods of the pulse signal and the required pulse width pair are set
Pulsewidth fiducial value, minimum pulse width limits value corresponding with the pulse width and the most short switch periods pair answered
The maximum switch periods value answered；
The variate-value is linearly increasing, and the clearing when the variate-value increases to the switch periods fiducial value then proceedes to line
Property increase；
When the pulsewidth fiducial value is greater than or equal to the minimum pulse width limits value, pulse width is enabled to compare given value equal to institute
Pulsewidth fiducial value is stated, then during the variate-value is linearly increasing, the switch periods fiducial value is equal to the maximum and opens
Periodic quantity is closed, high level/low level is exported when the pulse width compares given value less than the variate-value, when the pulse
Low level/high level is exported when width compares given value more than or equal to the variate-value, to form the pulse signal；
When the pulsewidth fiducial value is less than the minimum pulse width limits value, pulse width is enabled to compare given value equal to the minimum
Pulsewidth limits value, the then during variate-value is linearly increasing, according to the minimum pulse width limits value and required duty ratio
The current desired switch periods fiducial value is obtained, then during the variate-value is linearly increasing, when the pulse is wide
High level/low level is exported when degree compares given value less than the variate-value, when the pulse width compare given value be greater than or
Low level/high level is exported when equal to the variate-value, to form the pulse signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910202761.8A CN110022060B (en) | 2019-03-18 | 2019-03-18 | Mixed modulation method and implementation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910202761.8A CN110022060B (en) | 2019-03-18 | 2019-03-18 | Mixed modulation method and implementation method thereof |
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| Publication Number | Publication Date |
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| CN110022060A true CN110022060A (en) | 2019-07-16 |
| CN110022060B CN110022060B (en) | 2021-05-18 |
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| CN201910202761.8A Active CN110022060B (en) | 2019-03-18 | 2019-03-18 | Mixed modulation method and implementation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112564520A (en) * | 2019-09-24 | 2021-03-26 | 联合汽车电子有限公司 | PWM signal modulation method and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003219637A (en) * | 2002-01-22 | 2003-07-31 | Tohoku Pioneer Corp | Dc-dc converter circuit |
| US20060033483A1 (en) * | 2004-08-11 | 2006-02-16 | Niko Semiconductor Co., Ltd. | Auto-switching converter with PWM and PFM selection |
| TW201105016A (en) * | 2009-07-31 | 2011-02-01 | Orise Technology Co Ltd | DC-DC Converter with auto-switching between PWM and PFM |
| CN103296886A (en) * | 2012-02-29 | 2013-09-11 | 上海摩晶电子科技有限公司 | DC-DC converter adopting pulse frequency and pulse width hybrid modulation |
| CN104485823A (en) * | 2014-12-19 | 2015-04-01 | 重庆邮电大学 | Impulse sequence hybrid control method for PFM/PWM switching power supply |
-
2019
- 2019-03-18 CN CN201910202761.8A patent/CN110022060B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003219637A (en) * | 2002-01-22 | 2003-07-31 | Tohoku Pioneer Corp | Dc-dc converter circuit |
| US20060033483A1 (en) * | 2004-08-11 | 2006-02-16 | Niko Semiconductor Co., Ltd. | Auto-switching converter with PWM and PFM selection |
| TW201105016A (en) * | 2009-07-31 | 2011-02-01 | Orise Technology Co Ltd | DC-DC Converter with auto-switching between PWM and PFM |
| CN103296886A (en) * | 2012-02-29 | 2013-09-11 | 上海摩晶电子科技有限公司 | DC-DC converter adopting pulse frequency and pulse width hybrid modulation |
| CN104485823A (en) * | 2014-12-19 | 2015-04-01 | 重庆邮电大学 | Impulse sequence hybrid control method for PFM/PWM switching power supply |
Non-Patent Citations (1)
| Title |
|---|
| 殷沐林: "开关变换器的几种调制方式比较", 《黑龙江科技信息》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112564520A (en) * | 2019-09-24 | 2021-03-26 | 联合汽车电子有限公司 | PWM signal modulation method and system |
| CN112564520B (en) * | 2019-09-24 | 2022-06-28 | 联合汽车电子有限公司 | PWM signal modulation method and system |
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| Publication number | Publication date |
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| CN110022060B (en) | 2021-05-18 |
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Effective date of registration: 20200206 Address after: No. 90 Zijin Road, Suzhou High-tech Zone, Jiangsu Province, 215011 Applicant after: JIANGSU GOODWE POWER SUPPLY TECHNOLOGY CO., LTD. Applicant after: Goodway Power Technology (Guangde) Co., Ltd. Address before: 215163 Jiangsu city of Suzhou province high tech Zone of Kunlun Road No. 189 (city of science and Technology) Applicant before: JIANGSU GOODWE POWER SUPPLY TECHNOLOGY CO., LTD. Applicant before: Jiangsu Goodway Power Supply Technology Co., Ltd. Shenzhen Branch Applicant before: Goodway Power Technology (Guangde) Co., Ltd. |
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Address after: 215000 No. 90, Zijin Road, high tech Zone, Suzhou, Jiangsu Patentee after: Goodway Technology Co.,Ltd. Patentee after: Goodway Power Technology (Guangde) Co., Ltd Address before: No. 90, Zijin Road, high tech Zone, Suzhou City, Jiangsu Province, 215011 Patentee before: JIANGSU GOODWE POWER SUPPLY TECHNOLOGY Co.,Ltd. Patentee before: Goodway Power Technology (Guangde) Co., Ltd |