CN109980933A - A kind of Boost circuit magnetic core direct current biasing coefficient calculation method - Google Patents

A kind of Boost circuit magnetic core direct current biasing coefficient calculation method Download PDF

Info

Publication number
CN109980933A
CN109980933A CN201910287013.4A CN201910287013A CN109980933A CN 109980933 A CN109980933 A CN 109980933A CN 201910287013 A CN201910287013 A CN 201910287013A CN 109980933 A CN109980933 A CN 109980933A
Authority
CN
China
Prior art keywords
direct current
boost
current biasing
magnetic core
calculation method
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.)
Granted
Application number
CN201910287013.4A
Other languages
Chinese (zh)
Other versions
CN109980933B (en
Inventor
田家良
王奔
崔林威
周岩
张宇飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Post and Telecommunication University
Nanjing University of Posts and Telecommunications
Original Assignee
Nanjing Post and Telecommunication University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanjing Post and Telecommunication University filed Critical Nanjing Post and Telecommunication University
Priority to CN201910287013.4A priority Critical patent/CN109980933B/en
Publication of CN109980933A publication Critical patent/CN109980933A/en
Application granted granted Critical
Publication of CN109980933B publication Critical patent/CN109980933B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • 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
    • H02M3/158—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 including plural semiconductor devices as final control devices for a single load

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Evolutionary Computation (AREA)
  • Geometry (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The invention discloses a kind of Boost circuit magnetic core direct current biasing coefficient calculation methods, under the conditions of change in magnetic flux density amount in duty ratio D=0.5, by analyzing the working principle of Boost circuit, direct current biasing index variation rule of the magnetic core when Boost duty ratio changes is calculated.It is an advantage of the invention that clear physics conception, calculating process is simple, and direct current biasing coefficient magnitude of core material under the conditions of different duty in Boost outputting inductance can be effectively predicted.

Description

A kind of Boost circuit magnetic core direct current biasing coefficient calculation method
Technical field
The present invention relates to a kind of Boost circuit magnetic core direct current biasing coefficient calculation methods, especially different duty condition The calculation method of lower direct current biasing coefficient.
Background technique
As the working frequency of inductor and transformer is higher and higher, ferrite loss becomes the main limit of its engineering design Factor processed.The operating conditions such as magnetic flux density, frequency, duty ratio, temperature, driving voltage and D.C. magnetic biasing all can be to magnetic element Power loss generates direct influence, therefore the modeling of core loss is extremely difficult.
In the practical application of core loss prediction, that generally use is the Si Tanmaici (SE) based on fitting experimental data Equation.Classical SE equation different frequency and when magnetic flux density under the conditions of sinusoidal excitation by three Coefficient Fitting core materials Loss value, have the advantages that parameter it is few, using simple.But since fitting SE data need the sinusoidal magnetic flux in zero direct current biasing close It is collected under the conditions of degree excitation, therefore it is only effective under the excitation of only AC flux density.But magnetic in most switch converters Property the excitation born of element be the rectangular wave of change in duty cycle, and DC current may be carried.Exist to solve SE equation The problem of, many scholars propose that such as MSE, GSE, iGSE, RGSE Si Tanmaici equation correction model analyze nonsinusoidal excitation item Core loss under part.In addition, SE equation only embodies the feature of frequency, change in magnetic flux density rate is not accounted for, so it only has Accurately loss estimation could be provided in the sinusoidal situation in certain magnetic flux density, frequency and temperature range.Therefore, for reality The loss value of magnetic element under the complex working conditions of border, SE prediction equation can not reach requirement.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the above technological deficiencies, and it is inclined to provide a kind of Boost circuit magnetic core direct current Coefficient calculation method is set, under the conditions of change in magnetic flux density amount in duty ratio D=0.5, passes through analysis Boost circuit Working principle, calculate direct current biasing index variation rule of the magnetic core when Boost duty ratio changes, calculating process letter It is single, it is big that direct current biasing coefficient of core material under the conditions of different duty in Boost outputting inductance can be effectively predicted It is small.
In order to achieve the above object of the invention, a kind of the technical solution adopted by the present invention are as follows: Boost circuit magnetic core direct current biasing Coefficient calculation method utilizes duty ratio D under conditions of determining the working frequency and change in magnetic flux density amount of Boost =0.5 descends sinusoidal lossy data to predict direct current biasing index variation when different duty, the specific steps are as follows:
(1) duty cycle range that magnetic core work is determined according to input voltage, output voltage calculates Boost and is accounting for Change in magnetic flux density amount B when sky is than being 0.5pp；
(2) according to Boost in D=0.5 identified frequency f and change in magnetic flux density amount Bpp, according to Boost The working principle of converter calculates the direct current biasing coefficient under the conditions of different duty, obtains Boost in different duties Than lower direct current biasing index variation rule.
Further, in the step (1), Boost duty ratio D are as follows:
Wherein, VIFor input voltage, VOFor output voltage.
Further, in the step (1), Boost change in magnetic flux density amount BppAre as follows:
Wherein, T is period, VOFor output voltage, N is coil turn, AeFor core cross section product.
Further, in the step (2), direct current biasing coefficient B of the Boost under different dutyDCAre as follows:
Further, the magnetic core is ferrite soft magnetic magnetic core.
The invention has the benefit that for the core loss under the conditions of traditional unpredictable direct current biasing of magnetic loss model The problems such as, Physical Mechanism and Boost the circuit work that calculation method combination core loss provided by the invention generates are special Sign, using the factor of analyzing influence direct current biasing, obtains direct current of Buck inverter power inductance under the conditions of different duty Coefficient calculation method is biased, clear physics conception, calculating process is simple, and magnetic in Boost outputting inductance can be effectively predicted Direct current biasing coefficient magnitude of core material under the conditions of different duty.
Detailed description of the invention
Fig. 1 is the schematic diagram of Boost variator.
Fig. 2 is Boost control sequential figure.
Fig. 3 is Boost with change in duty cycle direct current biasing index variation profiles.
Specific embodiment
In order that the present invention can be more clearly and readily understood, following will be combined with the drawings in the embodiments of the present invention, Technical scheme in the embodiment of the invention is clearly and completely described.
Boost variator as shown in Figure 1 works in ccm mode, when Q1 conducting, flux change amount are as follows:
When Q1 cut-off, flux change amount are as follows:
The curent change of core inductance is as shown in Fig. 2, Iav.inFor the average current in inductance, when there are direct current biasing, Direct current biasing factor expression are as follows:
If when D=0.5, direct current biasing coefficient BDC=1.
As shown in figure 3, direct current biasing coefficient increases with duty ratio and is increased rapidly in Boost.
In conclusion the magnetic that we sufficiently combine the real work feature of Boost and core material loss to generate Stagnant loss and eddy-current loss physical substance, can easily predict Boost under direct current biasing by reasonably simplification Magnetic loss size under the conditions of different duty.
The present invention and its embodiments have been described above, this description is no restricted, shown in the drawings Only one of embodiments of the present invention, actual structure is not limited to this.All in all if the ordinary skill of this field Personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution phase As frame mode and embodiment, be within the scope of protection of the invention.

Claims (5)

1. a kind of Boost circuit magnetic core direct current biasing coefficient calculation method, it is characterised in that: in the work for determining Boost Under conditions of working frequency and change in magnetic flux density amount, different duty is predicted using lossy data sinusoidal under duty ratio D=0.5 When direct current biasing index variation, the specific steps are as follows:
(1) duty cycle range that magnetic core work is determined according to input voltage, output voltage calculates Boost in duty ratio Change in magnetic flux density amount B when being 0.5pp；
(2) according to Boost in D=0.5 identified frequency f and change in magnetic flux density amount Bpp, converted according to Boost The working principle of device calculates the direct current biasing coefficient under the conditions of different duty, obtains Boost under different duty Direct current biasing index variation rule.
2. a kind of Boost circuit magnetic core direct current biasing coefficient calculation method according to claim 1, it is characterised in that: institute It states in step (1), Boost duty ratio D are as follows:
Wherein, VIFor input voltage, VOFor output voltage.
3. a kind of Boost circuit magnetic core direct current biasing coefficient calculation method according to claim 1, it is characterised in that: institute It states in step (1), Boost change in magnetic flux density amount BppAre as follows:
Wherein, T is period, VOFor output voltage, N is coil turn, AeFor core cross section product.
4. a kind of Boost circuit magnetic core direct current biasing coefficient calculation method according to claim 1, it is characterised in that: institute It states in step (2), direct current biasing coefficient B of the Boost under different dutyDCAre as follows:
5. a kind of Boost circuit magnetic core direct current biasing coefficient calculation method according to claim 1, it is characterised in that: institute Stating magnetic core is ferrite soft magnetic magnetic core.
CN201910287013.4A 2019-04-10 2019-04-10 Boost circuit magnetic core direct current bias coefficient calculation method Active CN109980933B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910287013.4A CN109980933B (en) 2019-04-10 2019-04-10 Boost circuit magnetic core direct current bias coefficient calculation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910287013.4A CN109980933B (en) 2019-04-10 2019-04-10 Boost circuit magnetic core direct current bias coefficient calculation method

Publications (2)

Publication Number Publication Date
CN109980933A true CN109980933A (en) 2019-07-05
CN109980933B CN109980933B (en) 2020-11-10

Family

ID=67084028

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910287013.4A Active CN109980933B (en) 2019-04-10 2019-04-10 Boost circuit magnetic core direct current bias coefficient calculation method

Country Status (1)

Country Link
CN (1) CN109980933B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113094906A (en) * 2021-04-13 2021-07-09 深圳市铂科新材料股份有限公司 Method, device, equipment and medium for calculating direct current bias characteristic

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107066696A (en) * 2017-03-17 2017-08-18 南京邮电大学 Boost core loss computational methods

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107066696A (en) * 2017-03-17 2017-08-18 南京邮电大学 Boost core loss computational methods

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
YONGTAO HAN,ET.AL: "New Measurement Methods to Characterize Transformer Core Loss and Copper Loss In High Frequency Switching Mode Power Supplies", 《2004 35TH ANNUAL IEEE POWER ELECRRONICS SPECIALISFS CONFERENCE》 *
孔剑虹: "功率变换器拓扑中磁性元件磁芯损耗的理论与实验研究", 《中国博士学位论文全文数据库信息科技辑》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113094906A (en) * 2021-04-13 2021-07-09 深圳市铂科新材料股份有限公司 Method, device, equipment and medium for calculating direct current bias characteristic

Also Published As

Publication number Publication date
CN109980933B (en) 2020-11-10

Similar Documents

Publication Publication Date Title
Muhlethaler et al. Improved core-loss calculation for magnetic components employed in power electronic systems
CN107066696A (en) Boost core loss computational methods
Bouafassa et al. Unity power factor Converter based on a Fuzzy controller and Predictive Input Current
CN108460220A (en) A kind of prediction technique of the dynamic hystersis loop based on improved Jiles-Atherton models
Jacoboski et al. Closed-form solution for core loss calculation in single-phase bridgeless PFC rectifiers based on the iGSE method
CN108694270B (en) Transformer AC/DC hybrid operation excitation state-component loss mapping method
Knight et al. Integration of a first order eddy current approximation with 2D FEA for prediction of PWM harmonic losses in electrical machines
CN109980933A (en) A kind of Boost circuit magnetic core direct current biasing coefficient calculation method
Lodi et al. Behavioral models for ferrite-core inductors in switch-mode DC-DC power supplies: A survey
Ahmed et al. Pspice and simulink co-simulation for high efficiency DC-DC converter using SLPS interface software
CN108509687A (en) A kind of Flyback converters core loss computational methods
Hamimid et al. Non centered minor hysteresis loops evaluation based on exponential parameters transforms of the modified inverse Jiles–Atherton model
CN107016172A (en) Buck converter core loss computational methods
Detka et al. Modelling power losses in an inductor contained in the boost converter
CN110018353A (en) A kind of Flyback circuit magnetic core direct current biasing coefficient calculation method
Dancholvichit et al. Temperature regulation for thermoplastic micro-forming of bulk metallic glass: Robust control design using buck converter
Djekanovic et al. Thermally-compensated magnetic core loss model for time-domain simulations of electrical circuits
Koran et al. Adaptive switching frequency selection based on two-step efficiency optimization for grid-connected inverters
Kortas et al. Analytical solution of optimized energy consumption of Double Star Induction Motor operating in transient regime using a Hamilton–Jacobi–Bellman equation
Schweiner et al. Transient analysis of buck DC-DC converter switching
CN106126833A (en) A kind of novel bifurcation graphs method for drafting being applicable to Sliding mode variable structure control inverter
Frivaldsky et al. Critical component's figure of merite influence on power supply unit efficiency
Erickson et al. Steady-State Equivalent Circuit Modeling, Losses, and Efficiency
Thottuvelil et al. Application of switched-circuit simulators in power electronics design
Avilés et al. Estimation of Electromagnetic Losses Associated with the Buck Ferrite Core Inductor

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
GR01 Patent grant
GR01 Patent grant