CN104935176B - A kind of normalization Method of Phase-Shift Controlling for isolating two-way DC DC converters applied to full-bridge - Google Patents
A kind of normalization Method of Phase-Shift Controlling for isolating two-way DC DC converters applied to full-bridge Download PDFInfo
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- CN104935176B CN104935176B CN201510391177.3A CN201510391177A CN104935176B CN 104935176 B CN104935176 B CN 104935176B CN 201510391177 A CN201510391177 A CN 201510391177A CN 104935176 B CN104935176 B CN 104935176B
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Abstract
The present invention discloses a kind of normalization Method of Phase-Shift Controlling for isolating two-way DC DC converters applied to full-bridge, and the dutycycle for setting eight switching tube pulse control signals of the two-way DC DC converters of full-bridge isolation is 50%；Set the control signal of the switching tube of each bridge arm reciprocal；Using the control signal of first bridge arm upper tube of input side full-bridge topology as reference, the output voltage of converter and transimission power are adjusted by adjusting three Phaseshift controlling amounts.The present invention can effectively normalize existing Method of Phase-Shift Controlling, other Method of Phase-Shift Controlling can be equivalent to by adjusting the relation between tri- phase-shift phases of D1, D2 and D3, with highest flexibility and compatibility, the difficulty that Method of Phase-Shift Controlling is chosen and designed also simplify.
Description
Technical field
The invention belongs to power electronics control technology field, especially full-bridge isolation bidirectional DC-DC converter (to include
Half-bridge three-level, full-bridge isolation bidirectional DC-DC converter) Control System Design and manufacture.
Background technology
In recent years, as expanding economy and environmental problem highlight, new energy Semiconductor Converting Technology is developed rapidly,
Especially in direct-current micro-grid, distributed generation system, in electric automobile industry and region uninterruptible power system, in order to solve work(
Rate mobile equilibrium, the problems such as energy flexibly stores, full-bridge isolate bidirectional DC-DC converter because it has electrical isolation, power density
High, the advantages that energy energy two-way flow and module-cascade is easy, is widely applied.
In full-bridge isolation bidirectional DC-DC converter application, Phaseshift controlling is the control method of very typical case, tradition
Phaseshift controlling can complete the two-way flow of power, and control algolithm is simple.But controlled using traditional phase, converter can be present back
Flow the shortcomings such as power is excessive, switch stress is big, current stress is larger and system effectiveness is low.Isolate two-way DC- for optimization full-bridge
The control performance of DC converters, domestic and foreign scholars propose various new Method of Phase-Shift Controlling, including extension Phaseshift controlling
Method, dual Method of Phase-Shift Controlling and triple Method of Phase-Shift Controlling.
However, these numerous Method of Phase-Shift Controlling, due to control aspect restrictive condition and limitation, it is more difficult to obtain one entirely
The control performance of office's optimization, it is therefore, complete in order to make full use of the topological structure and feature of full-bridge isolation bidirectional DC-DC converter
Into the variator complex optimal controlled strategy performance, the Method of Phase-Shift Controlling that a flexibility ratio is higher, compatibility is stronger becomes urgently
Needs.
The content of the invention
In view of the disadvantage mentioned above of prior art, should the purpose of the present invention is to propose to one kind to solve above-mentioned technical problem
For the normalization Method of Phase-Shift Controlling of full-bridge isolation bidirectional DC-DC converter, by adjusting Phaseshift controlling amount D1、D2With D3's
Relation is equivalent to other Method of Phase-Shift Controlling, substantially overcomes the disadvantage mentioned above of prior art.
The present invention realizes that its goal of the invention is achieved by the steps of：
(1) full-bridge is isolated to the control signal (S of eight switching tubes of bidirectional DC-DC converter1、S2、S3、S4、S5、S6、
S7、S8) dutycycle be disposed as 50%；
(2) set the control signal of same bridge arm reciprocal, i.e. first switching tube (S of input side full-bridge topology1) control
Signal and second switching tube (S of input side full-bridge topology2) control signal it is reciprocal, the 3rd switching tube of input side full-bridge topology
(S3) control signal and the 4th switching tube (S of input side full-bridge topology4) control signal it is reciprocal, outlet side full-bridge topology
Control signal (the S of one switching tube5) and second switching tube (S of outlet side full-bridge topology6) control signal it is reciprocal, outlet side
The 3rd switching tube (S of full-bridge topology7) control signal and the 4th switching tube (S of outlet side full-bridge topology8) control signal it is mutual
Instead；
(3) first switching tube (S of input side full-bridge topology is set1) control signal and input side full-bridge topology the 3rd
Switching tube (S3) the Phaseshift controlling amount of control signal be D1, first switching tube (S of input side full-bridge topology is set1) control
Signal and outlet side full-bridge topology the first bridge arm upper tube (S5) the Phaseshift controlling amount of control signal be D2, input side full-bridge is set
First switching tube (S of topology1) control signal and second bridge arm of outlet side full-bridge topology down tube (S7) control signal
Phaseshift controlling amount is D3；
(4) by adjusting Phaseshift controlling amount D1、D2And D3Size complete full-bridge isolation bidirectional DC-DC converter
The control of output voltage and power output, by adjusting Phaseshift controlling amount D1、D2And D3Between relation be equivalent to other phases
Move control method and complete Phaseshift controlling.
Using above-mentioned technical proposal, the beneficial effects of the present invention are：
(1) by with same switching tube (S1) control signal be reference signal, all shapes of phase shifting control can be obtained
State, there is highest flexibility；
(2) by adjusting Phaseshift controlling amount D1、D2And D3Relation, existing Method of Phase-Shift Controlling can be equivalent to, had
Highest compatibility, the effect of optimization of other Phaseshift controllings can be obtained.
Brief description of the drawings
Fig. 1 is the full-bridge isolation bidirectional DC-DC converter topological structure schematic diagram of the inventive method control.
Fig. 2 normalizes the waveform diagram of Method of Phase-Shift Controlling.
The genetic map for the Method of Phase-Shift Controlling that Fig. 3 obtains according to normalization Phaseshift controlling.
Fig. 4 normalization Method of Phase-Shift Controlling is equivalent to other Method of Phase-Shift Controlling waveform diagrams.Wherein：It is three to scheme (a)
Weight Method of Phase-Shift Controlling (D1≤D2≤D3≤1)；It is triple Method of Phase-Shift Controlling (D to scheme (b)2≤D1≤D3≤1)；It is double to scheme (c)
Weight Method of Phase-Shift Controlling (D1≤D2≤D3≤1,D3-D2=D1)；It is dual Method of Phase-Shift Controlling (D to scheme (d)2≤D1≤D3≤1,
D3-D2=D1)；(e) is schemed for extension Method of Phase-Shift Controlling (D1≤D2≤D3≤1,D1=0)；(f) is schemed for extension Phaseshift controlling (D1≤
D2≤D3≤1,D3-D2=0)；It is traditional phase control method to scheme (g).
Fig. 5 normalization Method of Phase-Shift Controlling is equivalent to other Method of Phase-Shift Controlling waveform experiment schematic diagrames.Wherein：Fig. 4
(a)D1=0.0346, D2=0.0692, D3=0.1729；Fig. 4 (b) D1=0.1658, D2=0.0829, D3=0.3317；Figure
4.(c)D1=0.0508, D2=0.1016, D3=0.1524；Fig. 4 (d) D1=0.2735, D2=0.1368, D3=0.4103；
Fig. 4 (e) D1=0, D2=0.0676, D3=0.1352；Fig. 4 (f) D1=0.0676, D2=0.1352, D3=0.1352；Fig. 4
(g)D1=0, D2=0.1000, D3=0.1000.
Embodiment
Describe the embodiment of the present invention in detail with reference to technical scheme and accompanying drawing.
The topological structure of the full-bridge isolation bidirectional DC-DC converter of the present invention is as shown in Figure 1.The converter is mainly by two
Full-bridge converter forms, an auxiliary induction, two electric capacity, a high-frequency isolation transformer composition.Wherein, n becomes for transformer
Than；C1、C2Respectively mains side Support Capacitor and load-side Support Capacitor；UinFor mains side magnitude of voltage；LrTo aid in inductance value；
Uo、ioRespectively output current and load side voltage；Uab、UcdRespectively transformer primary side H bridges input voltage and secondary output electricity
Pressure value；R is converter equivalent load；Two full-bridge converters are made up of 8 switching tubes, and the driving pulse of switching tube is respectively
S1、S2、S3、S4、S5、S6、S7、S8。
Two Support Capacitor C in the system example of the present invention1And C2It is 2200 μ F, auxiliary induction L is 0.2mH, transformer
No-load voltage ratio n be 1, switch periods TsFor 0.1ms, can also design transformation device according to specific circumstances parameter.
The waveform diagram of the normalization Method of Phase-Shift Controlling for being used for full-bridge isolation bidirectional DC-DC converter of the present invention is such as
Shown in Fig. 2, it contains three Phaseshift controlling amounts, by adjusting Phaseshift controlling amount D1、D2And D3Relation can be equivalent to other
Method of Phase-Shift Controlling.The control method comprises the following steps：
(1) full-bridge is isolated to the control signal (S of eight switching tubes of bidirectional DC-DC converter1、S2、S3、S4、S5、S6、
S7、S8) dutycycle be disposed as 50%；
(2) set the control signal of same bridge arm reciprocal, i.e. first switching tube (S of input side full-bridge topology1) control
Signal and second switching tube (S of input side full-bridge topology2) control signal it is reciprocal, the 3rd switching tube of input side full-bridge topology
(S3) control signal and the 4th switching tube (S of input side full-bridge topology4) control signal it is reciprocal, outlet side full-bridge topology
Control signal (the S of one switching tube5) and second switching tube (S of outlet side full-bridge topology6) control signal it is reciprocal, outlet side
The 3rd switching tube (S of full-bridge topology7) control signal and the 4th switching tube (S of outlet side full-bridge topology8) control signal it is mutual
Instead；
(3) first switching tube (S of input side full-bridge topology is set1) control signal and input side full-bridge topology the 3rd
Switching tube (S3) the Phaseshift controlling amount of control signal be D1, first switching tube (S of input side full-bridge topology is set1) control
Signal and first switching tube (S of outlet side full-bridge topology5) the Phaseshift controlling amount of control signal be D2, input side full-bridge is set
First switching tube (S of topology1) control signal and the 3rd switching tube (S of outlet side full-bridge topology7) control signal phase shift
Controlled quentity controlled variable is D3；
(4) Phaseshift controlling amount D is limited1、D2And D3Scope to be all higher than 0 degree, less than or equal to 180 degree；
(5) D is set1、D2And D3Relation allow it to be equivalent to other Method of Phase-Shift Controlling, as shown in Figure 4：Work as D1≤D2≤
D3≤ 1 or D2≤D1≤D3When≤1, normalization Method of Phase-Shift Controlling is equivalent to triple Method of Phase-Shift Controlling, respectively such as Fig. 4
(a) and shown in Fig. 4 (b)；Work as D1≤D2≤D3≤ 1, D3-D2=D1Or D2≤D1≤D3≤ 1, D3-D2=D1When, normalize phase
Move control method and be equivalent to dual heavy Method of Phase-Shift Controlling, respectively as shown in Fig. 4 (c) and Fig. 4 (d)；Work as D1≤D2≤D3≤ 1,
D3-D2=D1Or D2≤D1≤D3≤ 1, D3-D2=D1When, normalization Method of Phase-Shift Controlling is equivalent to dual Method of Phase-Shift Controlling,
Respectively as shown in Fig. 4 (c) and Fig. 4 (d)；Work as D1≤D2≤D3≤ 1, D1=0 or D1≤D2≤D3≤ 1, D3=D2When, normalizing
Change Method of Phase-Shift Controlling to be equivalent to extend Method of Phase-Shift Controlling, respectively as shown in Fig. 4 (e) and Fig. 4 (f)；Work as D1≤D2≤D3≤
1, D1=0, D3=D2When, normalization Method of Phase-Shift Controlling is equivalent to traditional phase control method, as shown in Fig. 4 (g)；
(6) Fig. 5 is experimental result corresponding to the various Phaseshift controlling states of Fig. 4.Wherein, in Fig. 4 (a), D1=0.0346, D2
=0.0692, D3=0.1729, normalization Method of Phase-Shift Controlling is equivalent to triple Method of Phase-Shift Controlling (D1≤D2≤D3≤1)；Figure
In (4. b), D1=0.1658, D2=0.0829, D3=0.3317, normalization Method of Phase-Shift Controlling is equivalent to triple Phaseshift controllings
Method (D2≤D1≤D3≤1)；In Fig. 4 (c), D1=0.0508, D2=0.1016, D3=0.1524, normalize Phaseshift controlling side
Method is equivalent to dual Method of Phase-Shift Controlling (D1≤D2≤D3≤1)；In Fig. 4 (d), D1=0.2735, D2=0.1368, D3=
0.4103, normalization Method of Phase-Shift Controlling is equivalent to triple Method of Phase-Shift Controlling (D2≤D1≤D3≤1)；In Fig. 4 (e), D1=
0, D2=0.0676, D3=0.1352, normalization Method of Phase-Shift Controlling is equivalent to extend Method of Phase-Shift Controlling (D1=0)；Fig. 4
(f) in, D1=0.0676, D2=0.1352, D3=0.1352, normalization Method of Phase-Shift Controlling is equivalent to extend Phaseshift controlling side
Method (D2=D3)；In Fig. 4 (g), D1=0, D2=0.1000, D3=0.1000, normalization Method of Phase-Shift Controlling is equivalent to traditional phase
Move control method.
In the case where not departing from inventive concept, those skilled in the art are without departing from scope and spirit of the present invention
In the case of, a variety of obvious modifications or change on form and details carried out to it all should fall the protection in the present invention
In the range of.
Claims (2)
- A kind of 1. normalization Method of Phase-Shift Controlling applied to full-bridge isolation bidirectional DC-DC converter, it is characterised in that the control Method comprises the following steps：(1) by full-bridge isolate bidirectional DC-DC converter eight switching tubes control signal (S1, S2, S3, S4, S5, S6, S7, S8 dutycycle) is disposed as 50%；(2) set the control signal of same bridge arm reciprocal, i.e. the control signal of first switching tube (S1) of input side full-bridge topology It is reciprocal with the control signal of second switching tube (S2) of input side full-bridge topology, the 3rd switching tube (S3) of input side full-bridge topology The 4th switching tube (S4) of control signal and input side full-bridge topology control signal it is reciprocal, outlet side full-bridge topology first The control signal of switching tube (S5) and the control signal of second switching tube (S6) of outlet side full-bridge topology are reciprocal, outlet side full-bridge The control signal of the 4th switching tube (S8) of control signal and outlet side full-bridge topology of topological 3rd switching tube (S7) is reciprocal；(3) the 3rd switch of control signal and input side full-bridge topology of input side first switching tube (S1) of full-bridge topology is set The Phaseshift controlling amount for managing the control signal of (S3) is D1, sets the control signal of input side first switching tube (S1) of full-bridge topology Phaseshift controlling amount with the control signal of first switching tube (S5) of outlet side full-bridge topology is D2, sets input side full-bridge topology The phase shift control of the control signal of first switching tube (S1) and the control signal of the 3rd switching tube (S7) of outlet side full-bridge topology Amount processed is D3；(4) output that full-bridge isolates bidirectional DC-DC converter is completed by adjusting the size of Phaseshift controlling amount D1, D2 and D3 The control of voltage and power output, other phase shifts are equivalent to by adjusting the relation between Phaseshift controlling amount D1, D2 and D3 Control method completes Phaseshift controlling；Wherein：As D1≤D2≤D3≤1 or D2≤D1≤D3≤1, Phaseshift controlling side is normalized Method is equivalent to triple Method of Phase-Shift Controlling；As D1≤D2≤D3≤1, D3-D2=D1 or D2≤D1≤D3≤1, D3-D2=D1 When, normalization Method of Phase-Shift Controlling is equivalent to dual Method of Phase-Shift Controlling；As D1≤D2≤D3≤1, D1=0 or D1≤D2≤ When D3≤1, D3=D2, normalization Method of Phase-Shift Controlling is equivalent to extend Method of Phase-Shift Controlling；As D1≤D2≤D3≤1, D1= When 0, D3=D2, normalization Method of Phase-Shift Controlling is equivalent to traditional phase control method.
- 2. the normalization Method of Phase-Shift Controlling according to claim 1 applied to full-bridge isolation bidirectional DC-DC converter, its It is characterised by：Phaseshift controlling amount D1, D2 and D3 scope are limited to be all higher than 0 degree, less than or equal to 180 degree.
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| CN105356759B (en) * | 2015-12-13 | 2019-01-22 | 魏腾飞 | A kind of PWM control method of two-way full-bridge DC-DC converter |
| CN106712526B (en) * | 2017-03-10 | 2019-02-01 | 山东大学 | Consider double active bridge DC-DC converter minimum current stress control methods of dead time effect |
| CN107425729A (en) * | 2017-08-03 | 2017-12-01 | 国网江苏省电力公司南京供电公司 | It is a kind of based on soft-switching process of the current-modulation than DAB that current efficiency optimizes |
| CN107425730A (en) * | 2017-08-03 | 2017-12-01 | 国网江苏省电力公司南京供电公司 | A kind of soft-switching process of the DAB based on current efficiency optimization |
| CN108400713B (en) * | 2018-03-15 | 2020-03-20 | 西南交通大学 | Optimized power balance method of DC-DC converter in power electronic traction transformer |
| CN108847773B (en) * | 2018-06-14 | 2020-06-09 | 西南交通大学 | Multi-module power balancing method for input-series output-parallel full-bridge DC-DC converter |
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| US8780585B2 (en) * | 2010-07-31 | 2014-07-15 | Texas Instruments Incorporated | Double phase-shifting full-bridge DC-to-DC converter |
| CN103199707A (en) * | 2013-03-19 | 2013-07-10 | 北京交通大学 | Method for controlling drive pulses of DAB type bidirectional isolation DC-DC converter |
| CN103516224B (en) * | 2013-10-09 | 2015-08-19 | 清华大学 | A kind of mixing phase-shifting control method for two active full-bridge direct current converter |
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