CN117639498A - Multi-turn ratio degree of freedom Y-type coupled inductance direct current boost network converter and control method thereof - Google Patents
Multi-turn ratio degree of freedom Y-type coupled inductance direct current boost network converter and control method thereof Download PDFInfo
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- CN117639498A CN117639498A CN202311544630.0A CN202311544630A CN117639498A CN 117639498 A CN117639498 A CN 117639498A CN 202311544630 A CN202311544630 A CN 202311544630A CN 117639498 A CN117639498 A CN 117639498A
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Abstract
The invention provides a multi-turn ratio degree-of-freedom Y-type coupled inductance direct current boost network converter and a control method thereof, and belongs to the technical field of power electronic converters. The multi-turn ratio degree-of-freedom Y-type coupling inductance direct current boost network converter comprises a direct current voltage source, a Y-type coupling inductance unit, an auxiliary boost capacitor and an output unit. The Y-shaped coupling inductance unit is a coupling inductance with three windings connected in a Y-shape, and the output unit consists of a diode and a capacitor. The multi-turn ratio Y-type coupling inductance direct current boost network converter greatly improves voltage gain and realizes continuous input current.
Description
Technical Field
The invention belongs to the technical field of power electronic converters, and particularly relates to a Y-type coupling inductance direct current boost network converter with multiple turns of ratio and freedom and a control method thereof.
Background
The boost converter is widely applied to a front-stage converter of a distributed power system to realize the boost function. The traditional Boost converter circuit topology is a Boost circuit, in theory, the voltage gain of the Boost circuit increases along with the increase of the duty ratio, however, in consideration of the parasitic equivalent series impedance in the actual circuit, the actual gain of the Boost circuit does not always become larger along with the increase of the duty ratio, so that the Boost capability of the Boost circuit is very limited, the Boost circuit is not suitable for high-gain direct-current power conversion occasions, and the switching voltage is the same as the output voltage, so that a power switch with low on resistance cannot be used, and the system cost and loss are increased.
Disclosure of Invention
Aiming at the defects of the background technology, the invention provides a Y-type coupling inductance direct current boost network converter with multi-turn ratio and degree of freedom and a control method thereof.
The invention is realized by the following technical scheme, the invention provides a multi-turn ratio degree of freedom Y-type coupled inductance direct current boost network converter, which comprises: DC voltage source V in Coupled inductor winding N 1 Coupled inductor winding N 2 Coupled inductor winding N 3 Diode D 1 Power switch S, capacitor C 1 Diode D o Output capacitance C o And a load R;
DC voltage source V in Positive pole of (a) and coupled inductance winding N 1 Is connected with the positive electrode of the battery; coupling inductance winding N 1 Cathode of (a) and coupled inductor winding N 2 And N 3 Is connected with the positive electrode of the battery; coupling inductance winding N 2 Cathode and diode D of (2) 1 The anode of the power switch S is connected with the drain electrode of the power switch S; coupling inductance winding N 3 Cathode and capacitor C of (2) 1 Is connected with the cathode of the battery; diode D 1 Cathode and diode D of (2) o Positive electrode of (C) and capacitor C 1 Is connected with the positive electrode of the battery; diode D o Cathode and output capacitance C of (2) o Is connected with a load R; load R, output capacitance C o A cathode of a power switch S, a source of a power switch S and a DC voltage source V in Is connected to the cathode of the battery.
The invention also provides a control method of the multi-turn-ratio degree-of-freedom Y-type coupling inductance direct current boost network converter, which comprises the steps of gs Which controls the on-off of the power switch S, and couples the winding current i of the inductor N1 、i N2 Diode D 1 Voltage V of (2) D1 Output diode D o Voltage V of (2) Do Voltage V of power switch S S The whole working process is divided into 2 switching modes, namely a switchMode 1 and switching mode 2 are described in detail as follows:
switching mode 1, corresponding to time period [ t ] 1 ,t 2 ]At this stage, the power switch S is turned on, the DC voltage source V in Coupling the inductive winding N via the power switch S 1 And N 2 Charging, coupling inductance winding N due to magnetic induction principle 2 And N 3 Through diode D 1 Give electric capacity C 1 Charging; output diode D o Reverse bias, output capacitance C o The load resistor R is independently powered, and the switching mode 1 is ended;
switching mode 2, corresponding to time period [ t ] 2 ,t 3 ]The power switch tube S is turned off, and the diode D 1 Turn-off, DC voltage source V in Capacitance C 1 Coupled inductor winding N 1 And N 3 Through the output diode D o For load R and output capacitance C o Supplying power when coupling the current i of the inductance winding N1 When the switching mode is reduced to the lowest, the switching mode 2 is ended;
the gain expression obtained according to the above-described mode control is:
wherein D is the on duty ratio of the power switch S, and the working range is (0, 1).
The invention has the beneficial effects that:
the multi-turn ratio degree-of-freedom Y-type coupled inductance direct current boost network converter and the control method thereof provided by the invention reduce the system cost and the system loss, and realize continuous input current and common ground performance when obtaining high voltage gain.
Drawings
FIG. 1 is a diagram of a multi-turn ratio degree of freedom Y-type coupled inductor DC boost network converter;
FIG. 2 is a main waveform diagram of a multi-turn ratio degree of freedom Y-type coupled inductor DC boost network converter;
FIG. 3 is an equivalent circuit diagram of two switching modes of the converter; wherein (a) is an equivalent circuit diagram of a switching mode 1 of the multi-turn ratio degree-of-freedom Y-type coupling inductance direct current boost network converter; (b) An equivalent circuit diagram of a switching mode 2 of the multi-turn ratio degree-of-freedom Y-type coupling inductance direct current boost network converter;
FIG. 4 shows the voltage V in =80v, output voltage V o Experimental waveform at=200v.
The reference numerals in the figures illustrate: v (V) in Is a direct-current voltage source, S is a power switch, D 1 Is a voltage-multiplying diode C 1 Is a voltage-multiplying capacitor D o For the output diode, C o For output capacitance, R is load, N 1 、N 2 、N 3 Three windings for coupling inductance.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the present invention proposes a multi-turn ratio degree of freedom Y-type coupled inductor dc boost network converter, the converter comprising: DC voltage source V in Coupled inductor winding N 1 Coupled inductor winding N 2 Coupled inductor winding N 3 Diode D 1 Power switch S, capacitor C 1 Diode D o Output capacitance C o And a load R;
DC voltage source V in Positive pole of (a) and coupled inductance winding N 1 Is connected with the positive electrode of the battery; coupling inductance winding N 1 Cathode of (a) and coupled inductor winding N 2 And N 3 Is connected with the positive electrode of the battery; coupling inductance winding N 2 Cathode and diode D of (2) 1 The anode of the power switch S is connected with the drain electrode of the power switch S; coupling inductance winding N 3 Cathode and capacitor C of (2) 1 Is connected with the cathode of the battery; diode D 1 Cathode and diode of (a)D o Positive electrode of (C) and capacitor C 1 Is connected with the positive electrode of the battery; diode D o Cathode and output capacitance C of (2) o Is connected with a load R; load R, output capacitance C o A cathode of a power switch S, a source of a power switch S and a DC voltage source V in Is connected to the cathode of the battery. The converter achieves continuous input current and common-ground performance while achieving high voltage gain.
The invention also provides a control method of the multi-turn-ratio degree-of-freedom Y-type coupling inductance direct current boost network converter, which comprises the steps of gs Which controls the on-off of the power switch S, and couples the winding current i of the inductor N1 、i N2 Diode D 1 Voltage V of (2) D1 Output diode D o Voltage V of (2) Do Voltage V of power switch S S The waveforms are shown in fig. 2, and the whole working process is divided into 2 switching modes, namely a switching mode 1 and a switching mode 2, which are specifically described as follows:
switching mode 1, corresponding to time period [ t ] in FIG. 2 1 ,t 2 ]The equivalent circuit is shown in FIG. 3 (a), at which stage the power switch S is turned on, the DC voltage source V in Coupling the inductive winding N via the power switch S 1 And N 2 Charging, coupling inductance winding N due to magnetic induction principle 2 And N 3 Through diode D 1 Give electric capacity C 1 Charging; output diode D o Reverse bias, output capacitance C o The load resistor R is independently powered, and the switching mode 1 is ended;
switching mode 2, corresponding to time period [ t ] in FIG. 2 2 ,t 3 ]As shown in fig. 3 (b), the equivalent circuit is that the power switch tube S is turned off and the diode D 1 Turn-off, DC voltage source V in Capacitance C 1 Coupled inductor winding N 1 And N 3 Through the output diode D o For load R and output capacitance C o Supplying power when coupling the current i of the inductance winding N1 When the switching mode is reduced to the lowest, the switching mode 2 is ended;
the gain expression obtained according to the above-described mode control is:
wherein D is the on duty ratio of the power switch S, and the working range is (0, 1).
The following data through specific experiments illustrate the beneficial effects of the structure of the invention:
as shown in fig. 4, the input voltage V in =80v, output voltage V o =200v, turn ratio N 1 :N 2 :N 3 The on duty ratio d=0.2, the load r=200Ω, =1:1:3. FIG. 4 (a) shows the output capacitance C o Voltage of about 200V and capacitance C 1 The voltage is 80V. FIG. 4 (b) shows an output diode D o Voltage peak of about 200V, diode D 1 The voltage peak is about 100V. Fig. 4 (c) shows the voltage of the power switch S as 100V and the input current. As can be seen from the figure, the input current is continuous and has a higher output voltage gain.
Claims (2)
1. A multi-turn ratio degree of freedom Y-type coupled inductive dc boost network converter, the converter comprising: DC voltage source V in Coupled inductor winding N 1 Coupled inductor winding N 2 Coupled inductor winding N 3 Diode D 1 Power switch S, capacitor C 1 Diode D o Output capacitance C o And a load R;
DC voltage source V in Positive pole of (a) and coupled inductance winding N 1 Is connected with the positive electrode of the battery; coupling inductance winding N 1 Cathode of (a) and coupled inductor winding N 2 And N 3 Is connected with the positive electrode of the battery; coupling inductance winding N 2 Cathode and diode D of (2) 1 The anode of the power switch S is connected with the drain electrode of the power switch S; coupling inductance winding N 3 Cathode and capacitor C of (2) 1 Is connected with the cathode of the battery; diode D 1 Cathode and diode D of (2) o Positive electrode of (C) and capacitor C 1 Is connected with the positive electrode of the battery; diode D o Cathode and output capacitance C of (2) o Is connected with a load R; load(s)R, output capacitance C o A cathode of a power switch S, a source of a power switch S and a DC voltage source V in Is connected to the cathode of the battery.
2. The control method of the multi-turn ratio degree-of-freedom Y-type coupled inductor direct current boost network converter of claim 1, wherein: the control signal V of the multi-turn ratio degree-of-freedom Y-type coupling inductance direct current boost network converter gs Which controls the on-off of the power switch S, and couples the winding current i of the inductor N1 、i N2 Diode D 1 Voltage V of (2) D1 Output diode D o Voltage V of (2) Do Voltage V of power switch S S The whole working process is divided into 2 switching modes, namely a switching mode 1 and a switching mode 2, and the specific description is as follows:
switching mode 1, corresponding to time period [ t ] 1 ,t 2 ]At this stage, the power switch S is turned on, the DC voltage source V in Coupling the inductive winding N via the power switch S 1 And N 2 Charging, coupling inductance winding N due to magnetic induction principle 2 And N 3 Through diode D 1 Give electric capacity C 1 Charging; output diode D o Reverse bias, output capacitance C o The load resistor R is independently powered, and the switching mode 1 is ended;
switching mode 2, corresponding to time period [ t ] 2 ,t 3 ]The power switch tube S is turned off, and the diode D 1 Turn-off, DC voltage source V in Capacitance C 1 Coupled inductor winding N 1 And N 3 Through the output diode D o For load R and output capacitance C o Supplying power when coupling the current i of the inductance winding N1 When the switching mode is reduced to the lowest, the switching mode 2 is ended;
the gain expression obtained according to the above-described mode control is:
wherein D is the on duty ratio of the power switch S, and the working range is (0, 1).
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| CN202311544630.0A CN117639498A (en) | 2023-11-20 | 2023-11-20 | Multi-turn ratio degree of freedom Y-type coupled inductance direct current boost network converter and control method thereof |
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Citations (5)
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|---|---|---|---|---|
| JP2006121850A (en) * | 2004-10-22 | 2006-05-11 | Yuan Ze Univ | High boosting ratio converter using bidirectional magnetic circuit energy transfer of coupling inductor |
| US20060226816A1 (en) * | 2005-04-11 | 2006-10-12 | Yuan Ze University | Boost converter utilizing bi-directional magnetic energy transfer of coupling inductor |
| CN105245096A (en) * | 2015-11-24 | 2016-01-13 | 哈尔滨工业大学 | High-gain three-winding cascade boost converter |
| CN105471253A (en) * | 2015-11-24 | 2016-04-06 | 哈尔滨工业大学 | T-type coupling inductance network boost converter |
| CN115833613A (en) * | 2022-12-26 | 2023-03-21 | 四川九洲电器集团有限责任公司 | Alternating current converter for improving output gain and design method thereof |
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- 2023-11-20 CN CN202311544630.0A patent/CN117639498A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006121850A (en) * | 2004-10-22 | 2006-05-11 | Yuan Ze Univ | High boosting ratio converter using bidirectional magnetic circuit energy transfer of coupling inductor |
| US20060226816A1 (en) * | 2005-04-11 | 2006-10-12 | Yuan Ze University | Boost converter utilizing bi-directional magnetic energy transfer of coupling inductor |
| CN105245096A (en) * | 2015-11-24 | 2016-01-13 | 哈尔滨工业大学 | High-gain three-winding cascade boost converter |
| CN105471253A (en) * | 2015-11-24 | 2016-04-06 | 哈尔滨工业大学 | T-type coupling inductance network boost converter |
| CN115833613A (en) * | 2022-12-26 | 2023-03-21 | 四川九洲电器集团有限责任公司 | Alternating current converter for improving output gain and design method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 陆灏、武保东: "多种阻抗网络升压变换器拓扑结构优化研究", 安徽理工大学学报( 自然科学版), vol. 39, no. 4, 31 July 2019 (2019-07-31), pages 77 - 86 * |
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