CN105939108B - Switch inductance type quasi-switch boosting DC-DC converter - Google Patents
Switch inductance type quasi-switch boosting DC-DC converter Download PDFInfo
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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
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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
- H02M3/1552—Boost converters exploiting the leakage inductance of a transformer or of an alternator as boost inductor
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Abstract
本发明提供了一种开关电感型准开关升压DC‑DC变换器电路，包括电压源，由第一电感、第二电感、第四二极管、第五二极管和第六二极管构成的开关电感单元，由第一电容、第一二极管、第一MOS管、第三二极管和开关电感单元构成的二端准开关升压单元，第二MOS管，第二电容、第二二极管，输出二极管，输出滤波电容和负载。整个电路结构简单，结合了准开关升压单元、开关电容单元和开关电感单元各自的单级升压特性，实现了输出电压增益的拓展。
The present invention provides a switched inductor quasi-switching boost DC-DC converter circuit, comprising a voltage source, a switched inductor unit consisting of a first inductor, a second inductor, a fourth diode, a fifth diode and a sixth diode, a two-terminal quasi-switching boost unit consisting of a first capacitor, a first diode, a first MOS transistor, a third diode and a switched inductor unit, a second MOS transistor, a second capacitor, a second diode, an output diode, an output filter capacitor and a load. The entire circuit structure is simple, combining the single-stage boost characteristics of the quasi-switching boost unit, the switched capacitor unit and the switched inductor unit, and realizing the expansion of the output voltage gain.
Description
技术领域technical field
本发明涉及电力电子电路技术领域，具体涉及一种开关电感型准开关升压DC-DC变换器电路。The invention relates to the technical field of power electronic circuits, in particular to a switch inductance quasi-switch step-up DC-DC converter circuit.
背景技术Background technique
在燃料电池发电、光伏发电中，由于单个太阳能电池或者单个燃料电池提供的直流电压较低，无法满足现有用电设备的用电需求，也不能满足并网的需求，往往需要将多个电池串联起来达到所需的电压。这种方法一方面大大降低了整个系统的可靠性，另一方面还需解决串联均压问题。为此，需要能够把低电压转换为高电压的高增益DC-DC变换器。近几年提出的开关升压变换器SBI由于其输出电压的变化范围小，在低电压输入高电压输出的场合，如分布式能源并网系统和燃料电池系统，传统SBI变换器变得不再适用。为了扩大传统SBI变换器的适用范围，有必要通过拓扑改进拓展其输出电压增益。In fuel cell power generation and photovoltaic power generation, due to the low DC voltage provided by a single solar cell or a single fuel cell, it cannot meet the electricity demand of existing electrical equipment, nor can it meet the needs of grid connection. It is often necessary to combine multiple batteries connected in series to achieve the desired voltage. On the one hand, this method greatly reduces the reliability of the entire system, and on the other hand, it needs to solve the problem of series voltage equalization. For this reason, a high-gain DC-DC converter capable of converting low voltage to high voltage is required. The switching boost converter SBI proposed in recent years has a small output voltage variation range. In the occasions of low voltage input and high voltage output, such as distributed energy grid-connected systems and fuel cell systems, the traditional SBI converter becomes no longer suitable. Be applicable. In order to expand the applicable range of the traditional SBI converter, it is necessary to expand its output voltage gain through topology improvement.
发明内容Contents of the invention
本发明的目的在于克服上述现有技术的不足，提供了一种开关电感型准开关升压DC-DC变换器电路，具体技术方案如下。The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a switched inductance quasi-switch boost DC-DC converter circuit, the specific technical solution is as follows.
一种开关电感型准开关升压DC-DC变换器电路，包括电压源，由第一电感，第二电感，第四二极管，第五二极管和第六二极管构成的开关电感单元，由第一电容，第一二极管，第一MOS管，第三二极管和开关电感单元构成的 二端准开关升压单元，第二MOS管，第二电容，第二二极管，输出二极管，输出滤波电容和负载构成。A switched inductance type quasi-switching step-up DC-DC converter circuit, including a voltage source, a switched inductance composed of a first inductance, a second inductance, a fourth diode, a fifth diode and a sixth diode unit, a two-terminal quasi-switch boost unit composed of a first capacitor, a first diode, a first MOS tube, a third diode and a switch inductance unit, a second MOS tube, a second capacitor, and a second diode Tube, output diode, output filter capacitor and load constitute.
上述的一种开关电感型准开关升压DC-DC变换器电路中，所述电压源的正极分别与第一电容的负极和第三二极管的阳极连接；所述第一电容的正极分别与第一二极管的阴极、第一MOS管的漏极和输出二极管的阳极连接；所述第一MOS管的源极分别与第三二极管的阴极、第一电感的一端和第四二极管的阳极连接；所述第四二极管的阴极分别与第五二极管的阴极和第二电感的一端连接；所述第一电感的另一端分别与第五二极管的阳极和第六二极管的阳极连接；所述第一二极管的阳极分别与第二电感的另一端、第二MOS管的漏极、第二电容的正极和第六二极管的阴极连接；所述第二电容的负极分别与第二二极管的阳极、输出滤波电容的负极和负载的一端连接；所述输出二极管的阴极分别与输出滤波电容的正极和负载的另一端连接；所述电压源的负极分别与第二MOS管的源极、第二二极管的阴极连接。In the above-mentioned switched inductance type quasi-switching step-up DC-DC converter circuit, the positive poles of the voltage source are respectively connected to the negative poles of the first capacitor and the anodes of the third diodes; the positive poles of the first capacitors are respectively It is connected to the cathode of the first diode, the drain of the first MOS transistor and the anode of the output diode; the source of the first MOS transistor is respectively connected to the cathode of the third diode, one end of the first inductor and the fourth The anode of the diode is connected; the cathode of the fourth diode is respectively connected with the cathode of the fifth diode and one end of the second inductance; the other end of the first inductance is respectively connected with the anode of the fifth diode connected to the anode of the sixth diode; the anode of the first diode is respectively connected to the other end of the second inductance, the drain of the second MOS transistor, the anode of the second capacitor and the cathode of the sixth diode The negative pole of the second capacitor is connected to the anode of the second diode, the negative pole of the output filter capacitor and one end of the load respectively; the cathode of the output diode is connected to the positive pole of the output filter capacitor and the other end of the load respectively; The negative electrode of the voltage source is respectively connected with the source electrode of the second MOS transistor and the cathode electrode of the second diode.
与现有技术相比，本发明电路具有如下优点和技术效果：本发明整个电路结构简单，控制方便，输出电压增益更高；本发明电路利用准开关升压单元的单级升降压特性以及开关电感和开关电容并行充电串联放电的特性，从而升高了输出电压，实现了准开关升压变换器输出电压增益的拓展。Compared with the prior art, the circuit of the present invention has the following advantages and technical effects: the entire circuit of the present invention is simple in structure, convenient to control, and has higher output voltage gain; The switching inductor and the switching capacitor are charged in parallel and discharged in series, thereby increasing the output voltage and realizing the expansion of the output voltage gain of the quasi-switching boost converter.
附图说明Description of drawings
图1是本发明具体实施方式中的一种开关电感型准开关升压DC-DC变换器电路。Fig. 1 is a switching inductance type quasi-switching step-up DC-DC converter circuit in a specific embodiment of the present invention.
图2a、图2b分别是图1所示一种开关电感型准开关升压DC-DC变换器电路在其第一MOS管和第二MOS管同时导通和同时关断时段的等效电路图。Fig. 2a and Fig. 2b are the equivalent circuit diagrams of a switching inductance quasi-switching step-up DC-DC converter circuit shown in Fig. 1 when the first MOS transistor and the second MOS transistor are turned on and turned off at the same time.
图3为本发明电路的增益曲线与Boost变换器、开关电容Boost变换器、传统Z源DC-DC变换器和新型准Z源DC-DC变换器的增益曲线比较图。Fig. 3 is a graph comparing gain curves of the circuit of the present invention with Boost converters, switched capacitor Boost converters, traditional Z-source DC-DC converters and novel quasi-Z source DC-DC converters.
具体实施方式Detailed ways
以上内容已经对本发明的技术方案作了详细说明，以下结合附图对本发明的具体实施作进一步描述。The technical solution of the present invention has been described in detail above, and the specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.
参考图1，本发明所述的一种开关电感型准开关升压DC-DC变换器电路，包括电压源，由第一电感，第二电感，第四二极管，第五二极管和第六二极管构成的开关电感单元，由第一电容，第一二极管，第一MOS管，第三二极管和开关电感单元构成的二端准开关升压单元，第二MOS管，第二电容，第二二极管，输出二极管Do，输出滤波电容和负载RL。当第一MOS管S1和第二MOS管S2同时导通时，所述第一二极管D1、第二二极管D2、第三二极管D3和第五二极管D5均关断，第四二极管D4、第六二极管D6导通；所述电压源Vi与第一电容C1一起对并联的第一电感L1和第二电感L2充电储能；同时，电压源Vi、第一电容C1与第二电容C2一起对输出滤波电容Cf和负载RL供电。当第一MOS管S1和第二MOS管S2同时关断时，所述第一二极管D1、第二二极管D2、第三二极管D3和第五二极管D5均导通，第四二极管D4、第六二极管D6和输出二极管Do关断；第一电感L1和第二电感L2串联后与第一电容C1并联，形成回路；所述电压源Vi与第一电感L1和第二电感L2一起对第二 电容C2充电，形成回路；同时，输出滤波电容Cf对负载RL进行供电。整个电路结构简单，具有较高的输出电压增益。Referring to Fig. 1, a switch inductance type quasi-switch step-up DC-DC converter circuit according to the present invention includes a voltage source consisting of a first inductance, a second inductance, a fourth diode, a fifth diode and The switch inductance unit composed of the sixth diode, the two-terminal quasi-switch boost unit composed of the first capacitor, the first diode, the first MOS transistor, the third diode and the switch inductance unit, and the second MOS transistor , the second capacitor, the second diode, the output diode D o , the output filter capacitor and the load R L . When the first MOS transistor S 1 and the second MOS transistor S 2 are turned on at the same time, the first diode D 1 , the second diode D 2 , the third diode D 3 and the fifth diode Both D 5 are turned off, and the fourth diode D 4 and the sixth diode D 6 are turned on; the voltage source V i and the first capacitor C 1 are connected in parallel to the first inductance L 1 and the second inductance L 2 charging and storing energy; at the same time, the voltage source V i , the first capacitor C 1 and the second capacitor C 2 together supply power to the output filter capacitor C f and the load RL . When the first MOS transistor S 1 and the second MOS transistor S 2 are turned off at the same time, the first diode D 1 , the second diode D 2 , the third diode D 3 and the fifth diode D 5 are all turned on, the fourth diode D 4 , the sixth diode D 6 and the output diode D o are turned off; the first inductance L 1 and the second inductance L 2 are connected in parallel with the first capacitor C 1 in series, A loop is formed; the voltage source V i together with the first inductor L 1 and the second inductor L 2 charges the second capacitor C 2 to form a loop; meanwhile, the output filter capacitor C f supplies power to the load RL . The structure of the whole circuit is simple and has high output voltage gain.
本发明电路的具体连接方式如下：所述电压源的正极分别与第一电容的负极和第三二极管的阳极连接；所述第一电容的正极分别与第一二极管的阴极、第一MOS管的漏极和输出二极管的阳极连接；所述第一MOS管的源极分别与第三二极管的阴极、第一电感的一端和第四二极管的阳极连接；所述第四二极管的阴极分别与第五二极管的阴极和第二电感的一端连接；所述第一电感的另一端分别与第五二极管的阳极和第六二极管的阳极连接；所述第一二极管的阳极分别与第二电感的另一端、第二MOS管的漏极、第二电容的正极和第六二极管的阴极连接；所述第二电容的负极分别与第二二极管的阳极、输出滤波电容的负极和负载的一端连接；所述输出二极管的阴极分别与输出滤波电容的正极和负载的另一端连接；所述电压源的负极分别与第二MOS管的源极、第二二极管的阴极连接。The specific connection mode of the circuit of the present invention is as follows: the positive pole of the voltage source is connected with the negative pole of the first capacitor and the anode of the third diode respectively; The drain of a MOS transistor is connected to the anode of the output diode; the source of the first MOS transistor is respectively connected to the cathode of the third diode, one end of the first inductance and the anode of the fourth diode; The cathodes of the four diodes are respectively connected to the cathode of the fifth diode and one end of the second inductance; the other end of the first inductance is respectively connected to the anode of the fifth diode and the anode of the sixth diode; The anode of the first diode is respectively connected to the other end of the second inductor, the drain of the second MOS transistor, the positive pole of the second capacitor and the cathode of the sixth diode; the negative pole of the second capacitor is respectively connected to The anode of the second diode, the negative pole of the output filter capacitor are connected to one end of the load; the cathodes of the output diode are respectively connected to the positive pole of the output filter capacitor and the other end of the load; the negative poles of the voltage source are respectively connected to the second MOS The source of the tube and the cathode of the second diode are connected.
图2a、图2b给出了本发明电路的工作过程图。图2a、图2b分别对应的是第一MOS管S1和第二MOS管S2同时导通和同时关断时段的等效电路图。图中实线表示变换器中有电流流过的部分，虚线表示变换器中无电流流过的部分。Fig. 2a and Fig. 2b show the working process diagram of the circuit of the present invention. FIG. 2 a and FIG. 2 b respectively correspond to equivalent circuit diagrams of the periods when the first MOS transistor S 1 and the second MOS transistor S 2 are turned on and turned off at the same time. The solid line in the figure indicates the part where current flows in the converter, and the dotted line indicates the part where no current flows in the converter.
本发明的工作过程如下：Working process of the present invention is as follows:
阶段1，如图2a：第一MOS管S1和第二MOS管S2同时导通，此时第一二极管D1、第二二极管D2、第三二极管D3和第五二极管D5均关断，第四二 极管D4、第六二极管D6导通。电路形成了两个回路，分别是：电压源Vi与第一电容C1和第二电容C2一起给输出滤波电容Cf和负载RL充电，形成回路；电压源Vi与第一电容C1对并联的第一电感L1和第二电感L2进行充电储能，形成回路。Stage 1, as shown in Figure 2a: the first MOS transistor S 1 and the second MOS transistor S 2 are turned on at the same time, at this time the first diode D 1 , the second diode D 2 , the third diode D 3 and Both the fifth diode D 5 are turned off, and the fourth diode D 4 and the sixth diode D 6 are turned on. The circuit forms two loops, namely: the voltage source V i charges the output filter capacitor C f and the load R L together with the first capacitor C 1 and the second capacitor C 2 to form a loop; the voltage source V i and the first capacitor C 1 charges and stores energy to the first inductance L 1 and the second inductance L 2 connected in parallel to form a loop.
阶段2，如图2b：第一MOS管S1和第二MOS管S2同时关断，此时第一二极管D1、第二二极管D2、第三二极管D3和第五二极管D5均导通，第四二极管D4、第六二极管D6和输出二极管Do关断。电路形成了三个回路，分别是：电压源Vi与第一电感L1和第二电感L2一起给第二电容C2充电储能，形成回路；第一电感L1与第二电感L2串联后一起对第一电容C1充电，形成回路；输出滤波电容Cf给负载RL供电，形成回路。Phase 2, as shown in Figure 2b: the first MOS transistor S 1 and the second MOS transistor S 2 are turned off at the same time, at this time the first diode D 1 , the second diode D 2 , the third diode D 3 and The fifth diode D 5 is all turned on, and the fourth diode D 4 , the sixth diode D 6 and the output diode D o are turned off. The circuit forms three loops, namely: the voltage source V i together with the first inductance L 1 and the second inductance L 2 charge and store energy to the second capacitor C 2 to form a loop; the first inductance L 1 and the second inductance L 2 are connected in series to charge the first capacitor C 1 together to form a loop; the output filter capacitor C f supplies power to the load RL to form a loop.
综上情况，由于第一MOS管S1和第二MOS管S2的开关触发脉冲完全相同，设开关管S1和S2的占空比均为D，开关周期为Ts。并设定VL1和VL2分别为第一电感L1和第二电感L2两端的电压，VC1、VC2分别为第一电容C1和第二电容C2的电压，VS1为和VS2分别为第一MOS管S1和第二MOS管S2漏极与源极之间的电压。在一个开关周期Ts内，令输出电压为Vo。当变换器进入稳态工作后，得出以下的电压关系推导过程。In summary, since the switching trigger pulses of the first MOS transistor S1 and the second MOS transistor S2 are exactly the same, it is assumed that the duty ratios of the switching transistors S1 and S2 are both D, and the switching period is T s . And set V L1 and V L2 to be the voltages across the first inductance L 1 and the second inductance L 2 respectively, V C1 and V C2 to be the voltages of the first capacitor C 1 and the second capacitor C 2 respectively, and V S1 to be and V S2 is respectively the voltage between the drain and the source of the first MOS transistor S 1 and the second MOS transistor S 2 . In a switching period T s , let the output voltage be V o . When the converter enters the steady-state operation, the following voltage relationship derivation process is obtained.
工作模态1：第一MOS管S1和第二MOS管S2同时导通，对应的等效电路图2a所示，因此有如下公式：Working mode 1: the first MOS transistor S 1 and the second MOS transistor S 2 are turned on at the same time, and the corresponding equivalent circuit is shown in Figure 2a, so the following formula is given:
VL1on＝VL2on＝Vi+VC1 (1)V L1on ＝V L2on ＝V i +V C1 (1)
VO＝Vi+VC1+VC2 (2)V O =V i +V C1 +V C2 (2)
VS1＝VS2＝0 (3)V S1 =V S2 =0 (3)
MOS管S1和S2的导通时间为DTs。The conduction time of MOS transistors S 1 and S 2 is DT s .
工作模态2：第一MOS管S1和第二MOS管S2均关断，对应的等效电路如图2b所示，因此有如下公式：Working mode 2: both the first MOS transistor S 1 and the second MOS transistor S 2 are turned off, and the corresponding equivalent circuit is shown in Figure 2b, so the following formula is given:
VL1-off+VL2-off＝-VC1 (4)V L1-off +V L2-off ＝-V C1 (4)
VL1-off+VL2-off＝Vi-VC2 (5)V L1-off +V L2-off ＝V i -V C2 (5)
VS2＝VC2 (6)V S2 = V C2 (6)
VS1＝VC1 (7)V S1 = V C1 (7)
MOS管S1和S2的关断时间为(1-D)Ts。The turn-off time of the MOS transistors S 1 and S 2 is (1-D)T s .
根据以上分析，对第一电感L1和第二电感L2分别运用电感伏秒数守恒原理，联立式(1)、式(4)、式(5)可得：According to the above analysis, the principle of conservation of inductance volt-seconds is applied to the first inductance L1 and the second inductance L2 respectively, and the simultaneous formula (1), formula (4) and formula (5) can be obtained:
D(Vi+VC1)-(1-D)(VC1+VL2-off)＝0 (8)D(V i +V C1 )-(1-D)(V C1 +V L2-off )＝0 (8)
D(Vi+VC1)-(1-D)(VC1+VL1-off)＝0 (9)D(V i +V C1 )-(1-D)(V C1 +V L1-off )＝0 (9)
联立式(8)和式(9)可求得：Simultaneous formula (8) and formula (9) can be obtained:
因而，联立式(8)、式(9)和式(10)可得出第一电容C1的电压VC1、第二电容C2的电压VC2与电压源Vi之间的关系式为：Therefore, the relationship between the voltage V C1 of the first capacitor C 1 , the voltage V C2 of the second capacitor C 2 and the voltage source V i can be obtained from the simultaneous formula (8), formula (9) and formula (10) for:
则由式(2)、式(11)和式(12)，可得本发明电路的输出电压Vo表达式为：Then by formula (2), formula (11) and formula (12), the output voltage V o expression of available circuit of the present invention is:
则本发明电路的输出电压增益的表达式为：Then the expression of the output voltage gain of the circuit of the present invention is:
如图3所示为本发明电路的增益曲线与Boost变换器、开关电容Boost变换器、传统Z源DC-DC变换器和新型准Z源DC-DC变换器的增益曲线比较图，图中包括本发明电路的增益曲线，新型准Z源DC-DC变换器的增益曲线，传统Z源DC-DC变换器的增益曲线，开关电容Boost变换器的增益曲线，和Boost变换器的增益曲线。由图可知，本发明电路在占空比D不超过0.33的情况下，增益G就可以达到很大，且本发明电路的占空比D不会超过0.33。因此，相比之下，本发明电路的增益是非常高的。As shown in Figure 3, it is the gain curve comparison figure of the gain curve of the circuit of the present invention and Boost converter, switched capacitor Boost converter, traditional Z source DC-DC converter and novel quasi-Z source DC-DC converter, including The gain curve of the circuit of the present invention, the gain curve of the novel quasi-Z source DC-DC converter, the gain curve of the traditional Z source DC-DC converter, the gain curve of the switched capacitor Boost converter, and the gain curve of the Boost converter. It can be seen from the figure that the gain G of the circuit of the present invention can be very large when the duty ratio D does not exceed 0.33, and the duty ratio D of the circuit of the present invention will not exceed 0.33. Therefore, the gain of the circuit of the present invention is very high in comparison.
综上所述，本发明电路整体结构简单，控制方便，结合了准开关升压单元单级升降压的特性以及开关电感和开关电容并行充电串联放电的特性，实现了输出电压增益的进一步提升，且不存在启动冲击电流和MOS管开通瞬间的冲击电流。To sum up, the overall structure of the circuit of the present invention is simple, and the control is convenient. It combines the characteristics of the quasi-switching boost unit single-stage buck-boost and the characteristics of the switched inductor and the switched capacitor being charged in parallel and discharged in series, thereby achieving a further increase in the output voltage gain. , and there is no start-up inrush current and inrush current at the moment when the MOS tube is turned on.
上述实施例为本发明较佳的实施方式，但本发明的实施方式并不受所述实施例的限制，其他的任何未背离本发明的精神实质与原理下所作 的改变、修饰、替代、组合、简化，均应为等效的置换方式，都包含在本发明的保护范围之内。The above-mentioned embodiment is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the embodiment, and any other changes, modifications, substitutions and combinations made without departing from the spirit and principle of the present invention , simplification, all should be equivalent replacement methods, and are all included in the protection scope of the present invention.
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| CN108429454A (en) * | 2018-03-13 | 2018-08-21 | 广东工业大学 | A Two-Switch DC-DC Converter |
| CN109510462A (en) * | 2018-11-12 | 2019-03-22 | 浙江工业大学 | Step-up dc-dc converter |
| CN110829842B (en) * | 2019-11-18 | 2021-03-19 | 哈尔滨理工大学 | High-gain DC-DC converter of fuel cell for automobile |
| CN113258772B (en) * | 2021-05-11 | 2023-02-10 | 西安科技大学 | A Secondary Buck-Boost Converter Using Switched Inductor |
| CN113179015A (en) * | 2021-05-12 | 2021-07-27 | 西安石油大学 | High-gain DC-DC converter based on Z boost structure |
| CN116780898B (en) * | 2023-08-14 | 2023-11-21 | 深圳市恒运昌真空技术有限公司 | High-gain Cuk converter and control method thereof |
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