CN106712503A - Quasi-switch boost DC-DC converter employing switching inductor and switching capacitor - Google Patents
Quasi-switch boost DC-DC converter employing switching inductor and switching capacitor Download PDFInfo
- Publication number
- CN106712503A CN106712503A CN201710075473.1A CN201710075473A CN106712503A CN 106712503 A CN106712503 A CN 106712503A CN 201710075473 A CN201710075473 A CN 201710075473A CN 106712503 A CN106712503 A CN 106712503A
- Authority
- CN
- China
- Prior art keywords
- diode
- capacitor
- switched
- inductor
- input
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- H02M3/1557—Single ended primary inductor converters [SEPIC]
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
本发明提供一种采用开关电感和开关电容的准开关升压DC‑DC变换器，其包括输入直流电压源、开关电感单元、开关升压单元、开关电容单元、第二MOS管，第六二极管，第四电容和负载电阻；其中开关电感单元由第一电感、第二电感、第一二极管、第二二极管和第三二极管构成；开关升压单元由第一电容、第四二极管、第五二极管和第一MOS管组成；开关电容单元由第二电容、第三电容、第七二极管和第八二极管构成。整个电路结构简单，电源电流连续，输入与输出共地，结合了开关电感单元和开关电容单元并行充电串联放电的特点以及准开关升压网络的单级升降压特性，使其具有更高的输出电压增益，且电路不存在启动冲击电流和开关管开通瞬间的冲击电流。
The present invention provides a quasi-switching step-up DC-DC converter using switched inductors and switched capacitors, which includes an input DC voltage source, a switched inductor unit, a switched boost unit, a switched capacitor unit, a second MOS tube, and a sixth and second Pole tube, fourth capacitor and load resistor; wherein the switch inductance unit is composed of the first inductance, the second inductance, the first diode, the second diode and the third diode; the switch boost unit is composed of the first capacitor , the fourth diode, the fifth diode and the first MOS tube; the switched capacitor unit is composed of the second capacitor, the third capacitor, the seventh diode and the eighth diode. The whole circuit structure is simple, the power supply current is continuous, and the input and output share the same ground. It combines the characteristics of parallel charging and series discharge of the switched inductor unit and switched capacitor unit and the single-stage buck-boost characteristic of the quasi-switch boost network, making it have higher Output voltage gain, and there is no start-up inrush current and inrush current at the moment the switch tube is turned on in the circuit.
Description
技术领域technical field
本发明涉及电力电子变换器技术领域，具体涉及一种采用开关电感和开关电容的准开关升压DC-DC变换器。The invention relates to the technical field of power electronic converters, in particular to a quasi-switching step-up DC-DC converter using switched inductors and switched capacitors.
背景技术Background technique
随着现代工业技术的飞速发展，高增益DC-DC升压变换器在一些工业领域中得到了广泛的需求和应用。例如，在不间断直流电源(UPS)的后备电源中，需要将48V蓄电池电压升高到380V甚至更高；电动汽车用的高强度气体放电前照灯等需要将12V电压升高到100V稳定值；在新能源发电领域中，太阳能光伏电池板(33～43V)，燃料电池堆栈(22～48V)等输出电压都很低，需要通过一级高增益DC-DC变换器进行升压后与并网逆变器的输入电压(380V、760V)匹配进而并网发电。为此研究和开发能够把低电压转换为高电压的高增益DC-DC变换器变得越来越重要。在这其中最常用的是传统的Boost变换器，但是当要求输出电压增益很高时，就会使开关管的工作占空比接近于1，从而会导致过大的开关损耗，降低系统的整体效率。而近几年提出的Z源升压DC-DC变换器，虽然利用Z源网络实现了升压，但是其电压增益仍有很大的提升空间，此外它还存在输入输出不共地、开关电压应力高等问题。With the rapid development of modern industrial technology, high-gain DC-DC boost converters have been widely demanded and applied in some industrial fields. For example, in the backup power supply of the uninterruptible DC power supply (UPS), it is necessary to increase the voltage of the 48V battery to 380V or even higher; the high-intensity gas discharge headlights for electric vehicles need to increase the voltage of 12V to a stable value of 100V ; In the field of new energy power generation, the output voltage of solar photovoltaic panels (33-43V), fuel cell stacks (22-48V) and so on are very low, and need to be boosted and paralleled by a high-gain DC-DC converter. The input voltage (380V, 760V) of the grid inverter is matched and then grid-connected for power generation. For this reason, it is becoming more and more important to research and develop high-gain DC-DC converters that can convert low voltage to high voltage. Among them, the traditional Boost converter is the most commonly used, but when the output voltage gain is required to be very high, the duty cycle of the switching tube will be close to 1, which will cause excessive switching loss and reduce the overall power of the system. efficiency. However, the Z-source step-up DC-DC converter proposed in recent years, although the Z-source network is used to realize the boost, but its voltage gain still has a lot of room for improvement. high stress issues.
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，提出一种采用开关电感和开关电容的准开关升压DC-DC变换器。The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and propose a quasi-switching step-up DC-DC converter using switched inductors and switched capacitors.
本发明电路中具体包括输入直流电压源、开关电感单元、开关升压单元、开关电容单元、第二MOS管，第六二极管，第四电容和负载电阻；其中开关电感单元由第一电感、第二电感、第一二极管、第二二极管和第三二极管构成；开关升压单元由第一电容、第四二极管、第五二极管和第一MOS管组成；开关电容单元由第二电容、第三电容、第七二极管和第八二极管构成。The circuit of the present invention specifically includes an input DC voltage source, a switch inductance unit, a switch boost unit, a switch capacitor unit, a second MOS tube, a sixth diode, a fourth capacitor and a load resistor; wherein the switch inductance unit consists of a first inductance , the second inductor, the first diode, the second diode and the third diode; the switch boost unit is composed of the first capacitor, the fourth diode, the fifth diode and the first MOS tube ; The switched capacitor unit is composed of a second capacitor, a third capacitor, a seventh diode and an eighth diode.
本发明电路的具体连接方式为：所述输入直流电压源的一端与第一电感的一端和第一二极管的阳极连接；所述第一电感的另一端分别与第二二极管的阳极和第三二极管的阳极连接；所述第一二极管的阴极分别与第二二极管的阴极和第二电感的一端连接；所述第二电感的另一端分别与第三二极管的阴极、第一MOS管的漏极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一电容的正极、第二电容的负极、第二MOS管的漏极和第六二极管的阳极连接；所述第一电容的负极分别与第一MOS管的源极和第五二极管的阳极连接；所述第六二极管的阴极分别与第七二极管的阳极、第三电容的负极和第四电容的正极连接；所述第七二极管的阴极分别与第八二极管的阳极和第二电容的正极连接；所述第八二极管的阴极分别与第三电容的正极和负载电阻的一端连接；所述负载电阻的另一端分别与第四电容的负极、第二MOS管的源极、第五二极管的阴极和直流输入电源的负极连接。The specific connection mode of the circuit of the present invention is: one end of the input DC voltage source is connected to one end of the first inductance and the anode of the first diode; the other end of the first inductance is respectively connected to the anode of the second diode connected to the anode of the third diode; the cathode of the first diode is respectively connected to the cathode of the second diode and one end of the second inductance; the other end of the second inductance is respectively connected to the third diode The cathode of the tube, the drain of the first MOS tube are connected to the anode of the fourth diode; the cathode of the fourth diode is respectively connected to the positive pole of the first capacitor, the negative pole of the second capacitor, and the drain of the second MOS tube pole and the anode of the sixth diode are connected; the cathode of the first capacitor is respectively connected to the source of the first MOS transistor and the anode of the fifth diode; the cathode of the sixth diode is respectively connected to the seventh The anode of the diode, the negative pole of the third capacitor and the positive pole of the fourth capacitor are connected; the cathode of the seventh diode is respectively connected with the anode of the eighth diode and the positive pole of the second capacitor; The cathode of the pole tube is respectively connected with the anode of the third capacitor and one end of the load resistor; the other end of the load resistor is respectively connected with the cathode of the fourth capacitor, the source of the second MOS tube, the cathode of the fifth diode and the DC Negative connection for input power.
该变换器稳态输出时的电压增益G为：The voltage gain G of the converter at steady state output is:
其中Vo表示变换器负载侧的输出电压，Vi为输入直流电压源的输入电压，D为占空比。 Among them, V o represents the output voltage on the load side of the converter, V i is the input voltage of the input DC voltage source, and D is the duty cycle.
与现有技术相比本发明具有如下优点：结构简单，控制方便；且相比于传统的准Z源变换器(其输出电压增益为G＝1/(1-2D))和开关电感Z源升压变换器(其对应的输出电压增益为G＝(1+D)/(1-3D))，在相同的输入电压和占空比的情况下，具有更高的输出电压增益为G＝2(1+D)/(1-3D)，且电源电流连续，输入与输出之间共地，不存在电路启动冲击电流等，因此本发明电路具有很广泛的应用前景。Compared with the prior art, the present invention has the following advantages: simple structure and convenient control; Boost converter (its corresponding output voltage gain is G=(1+D)/(1-3D)), under the same input voltage and duty cycle, it has a higher output voltage gain as G= 2(1+D)/(1-3D), and the power supply current is continuous, the input and output share a common ground, and there is no circuit start-up inrush current, etc. Therefore, the circuit of the present invention has a very wide application prospect.
附图说明Description of drawings
图1是本发明实例中所述的一种采用开关电感和开关电容的准开关升压DC-DC变换器的电路图；Fig. 1 is the circuit diagram of a kind of quasi-switch step-up DC-DC converter that adopts switched inductance and switched capacitor described in the example of the present invention;
图2a、图2b是图1所示电路分别在第一MOS管和第二MOS管同时导通、第一MOS管和第二MOS管同时关断时，在一个开关周期内的主要工作模态图。Figure 2a and Figure 2b are the main working modes in one switching cycle when the first MOS tube and the second MOS tube are turned on at the same time, and the first MOS tube and the second MOS tube are turned off at the same time respectively in the circuit shown in Figure 1 picture.
图3a是本发明实例中所述变换器与开关电感Z源变换器和传统准Z源变换器的输出电压增益对比曲线图。Fig. 3a is a comparative graph of the output voltage gain of the converter described in the example of the present invention, a switched inductance Z-source converter and a traditional quasi-Z source converter.
图3b是以Vin＝10V，占空比D＝0.2为例，给出的本发明实例电路中相关变量的仿真结果图。Fig. 3b is a graph showing the simulation results of relevant variables in the example circuit of the present invention, taking Vin = 10V and duty cycle D = 0.2 as an example.
具体实施方式detailed description
以下结合实施例及附图对本发明作进一步详细的描述说明，但本发明的实施方式不限于此。需指出的是，以下若有未特别详细说明之过程或参数，均是本领域技术人员可参照现有技术理解或实现的。The present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto. It should be noted that, if there are any processes or parameters that are not specifically described in detail below, those skilled in the art can understand or implement them with reference to the prior art.
本实施例的基本拓扑结构如图1所示。为了验证方便，未特别说明的情况下电路结构中的器件均视为理想器件。一种采用开关电感和开关电容的准开关升压DC-DC变换器，其包括输入直流电压源Vin、开关电感单元、开关升压单元、开关电容单元、第二MOS管S2，第六二极管D6，第四电容C4和负载电阻RL；其中开关电感单元由第一电感L1、第二电感L2、第一二极管D1、第二二极管D2和第三二极管D3构成；开关升压单元由第一电容C1、第四二极管D4、第五二极管D5和第一MOS管S1组成；开关电容单元由第二电容C2、第三电容C3、第七二极管D7和第八二极管D8构成。The basic topology structure of this embodiment is shown in FIG. 1 . For the convenience of verification, the devices in the circuit structure are regarded as ideal devices unless otherwise specified. A quasi-switching step-up DC-DC converter using switched inductors and switched capacitors, which includes an input DC voltage source V in , a switched inductor unit, a switched boost unit, a switched capacitor unit, a second MOS transistor S 2 , and a sixth Diode D 6 , fourth capacitor C 4 and load resistor R L ; wherein the switching inductance unit consists of first inductor L 1 , second inductor L 2 , first diode D 1 , second diode D 2 and The third diode D 3 is formed; the switching boost unit is composed of the first capacitor C 1 , the fourth diode D 4 , the fifth diode D 5 and the first MOS transistor S 1 ; the switched capacitor unit is composed of the second The capacitor C 2 , the third capacitor C 3 , the seventh diode D 7 and the eighth diode D 8 constitute.
本实施例中设定第一MOS管S1和第二MOS管S2的驱动信号为VGS1、VGS2。第一电感L1电流为iL1、第二电感L2电流为iL2、第一电容C1电压为VC1、第二电容C2电压为VC2、第三电容C3电压为VC3、第四电容C4电压为VC4。并设定占空比为D，设定开关周期为Ts。In this embodiment, the driving signals of the first MOS transistor S 1 and the second MOS transistor S 2 are set as V GS1 and V GS2 . The current of the first inductor L 1 is i L1 , the current of the second inductor L 2 is i L2 , the voltage of the first capacitor C 1 is V C1 , the voltage of the second capacitor C 2 is V C2 , the voltage of the third capacitor C 3 is V C3 , The voltage of the fourth capacitor C 4 is V C4 . And set the duty ratio as D, and set the switching period as T s .
如图2a和图2b所示，图中实线表示变换器中有电流流过的部分，虚线表示变换器中没有电流流过的部分。本实例采用开关电感和开关电容的准开关升压DC-DC变换器在一个开关周期(0,Ts)内，主要有两个不同阶段的工作模态，分别描述如下：As shown in Fig. 2a and Fig. 2b, the solid line in the figure indicates the part where the current flows in the converter, and the dotted line indicates the part where the current does not flow in the converter. In this example, the quasi-switching step-up DC-DC converter using switched inductors and switched capacitors has two working modes in different stages within a switching cycle (0, T s ), which are described as follows:
工作模态1(0<t<DTs)：如图2a所示，第一MOS管S1和第二MOS管S2同时开通，第二二极管D2、第四二极管D4、第五二极管D5、第六二极管D6和第八二极管D8反向截止，第一二极管D1、第三二极管D3和第七二极管D7正向导通。则此时输入直流电压源Vin和第一电容C1一起给并联的第一电感L1和第二电感L2充电，第四电容C4通过二极管D7和第二MOS管S2给第二电容C2充电，同时第三电容C3和第四电容C4串联一起向负载电阻RL供电。Working mode 1 (0<t<DT s ): 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, the second diode D 2 and the fourth diode D 4 , the fifth diode D 5 , the sixth diode D 6 and the eighth diode D 8 reverse cutoff, the first diode D 1 , the third diode D 3 and the seventh diode D 7 forward conduction. At this time, the input DC voltage source V in and the first capacitor C 1 charge the parallel connected first inductor L 1 and the second inductor L 2 together, and the fourth capacitor C4 charges the second capacitor through the diode D 7 and the second MOS transistor S 2 The capacitor C2 is charged, and at the same time, the third capacitor C3 and the fourth capacitor C4 are connected in series to supply power to the load resistor RL .
此工作模态下，相关电气参数关系式为：In this working mode, the relevant electrical parameter relational formula is:
VL1_on＝VL2_on＝Vin+VC1 (1)V L1_on ＝V L2_on ＝V in +V C1 (1)
VC2＝VC4 (2)V C2 = V C4 (2)
Vo＝VC3+VC4 (3)V o =V C3 +V C4 (3)
其中，VL1-on，VL2_on表示第一MOS管S1和第二MOS管S2同时导通期间第一电感L1和第二电感L2两端的电压，Vo表示变换器负载侧的输出电压。Among them, V L1-on and V L2_on represent the voltage across the first inductance L 1 and the second inductance L 2 during the simultaneous conduction period of the first MOS transistor S 1 and the second MOS transistor S 2 , V o represents the voltage on the load side of the converter The output voltage.
工作模态2(DTs<t<Ts)：如图2b所示，第一MOS管S1和第二MOS管S2同时关断，则第二二极管D2、第四二极管D4、第五二极管D5、第六二极管D6和第八二极管D8导通，第一二极管D1、第三二极管D3和第七二极管D7关断。则此时输入直流电压源Vin与第一电感L1和第二电感L2串联一起向第一电容C1和第四电容C4充电，第二电容C2给第三电容C3充电。同时，输入直流电压源Vin与第一电感L1、第二电感L2和第二电容C2串联一起向负载电阻RL供电。此工作模态下，相关电气参数关系式为：Working mode 2 (DT s <t<T s ): 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, then the second diode D 2 and the fourth diode The tube D 4 , the fifth diode D 5 , the sixth diode D 6 and the eighth diode D 8 conduct, and the first diode D 1 , the third diode D 3 and the seventh diode Tube D7 is turned off. At this time, the input DC voltage source V in is connected in series with the first inductor L 1 and the second inductor L 2 to charge the first capacitor C 1 and the fourth capacitor C 4 , and the second capacitor C 2 charges the third capacitor C 3 . At the same time, the input DC voltage source V in is connected in series with the first inductor L 1 , the second inductor L 2 and the second capacitor C 2 to supply power to the load resistor RL . In this working mode, the relevant electrical parameter relational formula is:
VL1-off+VL2-off＝Vin-VC1 (4)V L1-off +V L2-off ＝V in -V C1 (4)
VC1＝VC4 (5)V C1 = V C4 (5)
VC2＝VC3 (6)V C2 = V C3 (6)
Vo＝VC2+VC1 (7)V o =V C2 +V C1 (7)
其中，VL1-off，VL2-off表示第一MOS管S1和第二MOS管S2同时关断时第一电感L1和第二电感L2两端的电压。Wherein, V L1-off and V L2-off represent voltages across the first inductor L 1 and the second inductor L 2 when the first MOS transistor S 1 and the second MOS transistor S 2 are turned off simultaneously.
根据以上分析，对第一电感L1和第二电感L2运用伏秒平衡原理，即电感电压在一个开关周期内的平均值为零，联立式(1)和(4)可得According to the above analysis, apply the volt-second balance principle to the first inductance L 1 and the second inductance L 2 , that is, the average value of the inductance voltage in one switching cycle is zero, and the simultaneous equations (1) and (4) can be obtained
则联立式(2)、(3)、(5)、(6)、(7)和(8)可求得稳态时电容电压和输出电压的表达式分别为：Then the simultaneous formulas (2), (3), (5), (6), (7) and (8) can obtain the expressions of capacitor voltage and output voltage in steady state respectively as follows:
则本发明实例所述的一种采用开关电感和开关电容的准开关升压DC-DC变换器稳态输出时的电压增益G为：Then the voltage gain G of a quasi-switch step-up DC-DC converter using switched inductance and switched capacitor described in the example of the present invention is output in steady state:
如图3a所示为本发明实例电路的输出电压增益曲线与开关电感Z源变换器和传统准Z源变换器的电压增益曲线比较图。由图可知，本发明实例电路在占空比D不超过0.33的情况下，输出电压增益G就可以达到很大，明显高于其他两种变换器的电压增益，且本发明实例电路的占空比D不会超过0.33。Fig. 3a is a graph comparing the output voltage gain curve of the example circuit of the present invention with the voltage gain curves of the switched inductance Z-source converter and the traditional quasi-Z source converter. It can be seen from the figure that the output voltage gain G of the example circuit of the present invention can reach a large value when the duty ratio D does not exceed 0.33, which is obviously higher than the voltage gains of the other two converters, and the duty ratio of the example circuit of the present invention is The ratio D will not exceed 0.33.
图3b是以Vin＝10V，占空比D＝0.2为例给出的本发明实例电路中相关变量的仿真结果图。D＝0.2时，对应的输出电压增益G＝6，第一、第二、第三、第四电容电压(VC1、VC2、VC3、VC4)＝30V，输出电压Vo＝60V。此外，图3b中还给出了第一、第二电感电流(iL1、iL2)的波形以及第一MOS管S1和第二MOS管S2的驱动信号(VGS、VGS2)的波形。Fig. 3b is a simulation result diagram of relevant variables in the example circuit of the present invention given as an example of Vin = 10V and duty cycle D = 0.2. When D=0.2, the corresponding output voltage gain is G=6, the first, second, third and fourth capacitor voltages (V C1 , V C2 , V C3 , V C4 )=30V, and the output voltage V o =60V. In addition, Figure 3b also shows the waveforms of the first and second inductor currents (i L1 , i L2 ) and the driving signals (V GS , V GS2 ) of the first MOS transistor S 1 and the second MOS transistor S 2 waveform.
综上所述，本发明实例提出的一种采用开关电感和开关电容的准开关升压DC-DC变换器，结构简单，控制方便；相比于传统的准Z源变换器和开关电感Z源变换器，在相同的输入电压和占空比的情况下，具有更高的输出电压增益，且电源电流连续，输入与输出之间共地，在电路启动瞬间不存在启动冲击电流，因此本发明电路具有很广泛的应用前景。In summary, a quasi-switching step-up DC-DC converter using switched inductors and switched capacitors proposed in the examples of the present invention has simple structure and convenient control; compared with traditional quasi-Z source converters and switched inductor Z sources The converter has a higher output voltage gain under the same input voltage and duty cycle, and the power supply current is continuous, the input and output share a common ground, and there is no start-up surge current at the moment of circuit start-up, so the present invention The circuit has a very wide application prospect.
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.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710075473.1A CN106712503A (en) | 2017-02-13 | 2017-02-13 | Quasi-switch boost DC-DC converter employing switching inductor and switching capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710075473.1A CN106712503A (en) | 2017-02-13 | 2017-02-13 | Quasi-switch boost DC-DC converter employing switching inductor and switching capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106712503A true CN106712503A (en) | 2017-05-24 |
Family
ID=58911168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710075473.1A Pending CN106712503A (en) | 2017-02-13 | 2017-02-13 | Quasi-switch boost DC-DC converter employing switching inductor and switching capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106712503A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155785A (en) * | 2018-01-04 | 2018-06-12 | 东南大学 | A kind of high booster converter of double dissymmetrical structures suitable for photovoltaic generating system |
| CN108258903A (en) * | 2018-01-04 | 2018-07-06 | 东南大学 | Transless high-gain DC-DC converter |
| CN112054707A (en) * | 2020-08-12 | 2020-12-08 | 中国科学院电工研究所 | Micro inverter applied to high-voltage thin-film photovoltaic module based on switch 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 |
| CN113258772A (en) * | 2021-05-11 | 2021-08-13 | 西安科技大学 | Secondary buck-boost converter adopting switch inductor |
| CN113951851A (en) * | 2021-11-25 | 2022-01-21 | 北京福乐云数据科技有限公司 | Photoelectric wave health multi-parameter detector and control method |
| US11316430B2 (en) | 2020-03-30 | 2022-04-26 | Qatar University | DC to DC switched inductor boost converter |
| CN114583928A (en) * | 2022-05-06 | 2022-06-03 | 成都复锦功率半导体技术发展有限公司 | Power supply boosting drive circuit based on self-oscillation |
| TWI778564B (en) * | 2021-03-31 | 2022-09-21 | 新唐科技股份有限公司 | Power converter |
| CN116111844A (en) * | 2023-04-13 | 2023-05-12 | 深圳市恒运昌真空技术有限公司 | Dual-switch converter and control method thereof |
| CN116155101A (en) * | 2023-04-19 | 2023-05-23 | 深圳市恒运昌真空技术有限公司 | High-gain converter based on coupling inductance |
| CN116169882A (en) * | 2023-04-26 | 2023-05-26 | 深圳市恒运昌真空技术有限公司 | High-gain boost converter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205847124U (en) * | 2016-06-30 | 2016-12-28 | 华南理工大学 | A Switched Inductance Hybrid Quasi-Z Source Inverter |
| CN206698111U (en) * | 2017-02-13 | 2017-12-01 | 华南理工大学 | It is a kind of using switched inductors and the quasi- boost switching DC DC converters of switching capacity |
-
2017
- 2017-02-13 CN CN201710075473.1A patent/CN106712503A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205847124U (en) * | 2016-06-30 | 2016-12-28 | 华南理工大学 | A Switched Inductance Hybrid Quasi-Z Source Inverter |
| CN206698111U (en) * | 2017-02-13 | 2017-12-01 | 华南理工大学 | It is a kind of using switched inductors and the quasi- boost switching DC DC converters of switching capacity |
Non-Patent Citations (2)
| Title |
|---|
| ANDRII CHUB等: "Improved switched-inductor quasi-switched-boost inverter with low input current ripple", 《2015 56TH INTERNATIONAL SCIENTIFIC CONFERENCE ON POWER AND ELECTRICAL ENGINEERING OF RIGA TECHNICAL UNIVERSITY (RTUCON)》 * |
| 王挺: "高增益双管升压变换器研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258903A (en) * | 2018-01-04 | 2018-07-06 | 东南大学 | Transless high-gain DC-DC converter |
| CN108155785A (en) * | 2018-01-04 | 2018-06-12 | 东南大学 | A kind of high booster converter of double dissymmetrical structures suitable for photovoltaic generating system |
| US11316430B2 (en) | 2020-03-30 | 2022-04-26 | Qatar University | DC to DC switched inductor boost converter |
| CN112054707A (en) * | 2020-08-12 | 2020-12-08 | 中国科学院电工研究所 | Micro inverter applied to high-voltage thin-film photovoltaic module based on switch inductor |
| CN115149794A (en) * | 2021-03-31 | 2022-10-04 | 新唐科技股份有限公司 | power converter |
| US11876443B2 (en) | 2021-03-31 | 2024-01-16 | Nuvoton Technology Corporation | Hybrid switched-capacitor converter |
| TWI778564B (en) * | 2021-03-31 | 2022-09-21 | 新唐科技股份有限公司 | Power converter |
| CN113258772A (en) * | 2021-05-11 | 2021-08-13 | 西安科技大学 | Secondary buck-boost converter adopting switch 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 |
| CN113951851A (en) * | 2021-11-25 | 2022-01-21 | 北京福乐云数据科技有限公司 | Photoelectric wave health multi-parameter detector and control method |
| CN114583928B (en) * | 2022-05-06 | 2022-08-05 | 成都复锦功率半导体技术发展有限公司 | Power supply boosting drive circuit based on self-oscillation |
| CN114583928A (en) * | 2022-05-06 | 2022-06-03 | 成都复锦功率半导体技术发展有限公司 | Power supply boosting drive circuit based on self-oscillation |
| CN116111844A (en) * | 2023-04-13 | 2023-05-12 | 深圳市恒运昌真空技术有限公司 | Dual-switch converter and control method thereof |
| CN116155101A (en) * | 2023-04-19 | 2023-05-23 | 深圳市恒运昌真空技术有限公司 | High-gain converter based on coupling inductance |
| CN116155101B (en) * | 2023-04-19 | 2023-06-27 | 深圳市恒运昌真空技术有限公司 | High-gain converter based on coupling inductance |
| CN116169882A (en) * | 2023-04-26 | 2023-05-26 | 深圳市恒运昌真空技术有限公司 | High-gain boost converter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206698111U (en) | It is a kind of using switched inductors and the quasi- boost switching DC DC converters of switching capacity | |
| CN106712503A (en) | Quasi-switch boost DC-DC converter employing switching inductor and switching capacitor | |
| CN105939108B (en) | Switch inductance type quasi-switch boosting DC-DC converter | |
| CN105939112B (en) | A kind of quasi- boost switching DC-DC converter of high-gain | |
| CN111464024B (en) | A Buck-Boost DC-DC Converter with High Gain Boost Capability | |
| WO2016177011A1 (en) | Ground-sharing high-gain z source boost converter | |
| CN111464023B (en) | High-gain step-up and step-down Sepic DC-DC converter | |
| CN104779790A (en) | Switched inductance quasi-Z source DC-DC converter circuit | |
| CN105939107B (en) | Mixed quasi-switch boosting DC-DC converter | |
| CN209120060U (en) | High Gain DC/DC Converter and Power System Based on Coupled Inductor | |
| CN111786555B (en) | Zero-ripple high-gain DC-DC converter based on a new boost unit | |
| CN205847093U (en) | A Current Continuous High-Gain Switching Step-Up Quasi-Z Source Converter Circuit | |
| CN204442176U (en) | A kind of switched inductors type accurate Z source DC-DC converter circuit | |
| CN105634275A (en) | Boost converter of switch inductor | |
| CN106787692A (en) | A kind of quasi- Z source converters of type switching capacity altogether | |
| CN205847091U (en) | A Switched Inductance Quasi-Switch Boost DC-DC Converter | |
| CN106849643A (en) | A kind of switching capacity type mixes quasi- Z source converters | |
| TWI625033B (en) | Interleaved direct-current boost device | |
| CN205490142U (en) | Switched inductor boost converter | |
| CN109004835A (en) | The quasi- source the Z DC-DC converter of isolated form high-gain suitable for photovoltaic power generation | |
| CN107104590A (en) | A kind of quasi- boost switching DC/DC converters based on switched inductors | |
| CN107612349A (en) | The common ground type isolation quasi- Z source converters of high-gain of fuel cell and photovoltaic generation | |
| CN206564540U (en) | A Common Ground Switched Capacitor Quasi-Z Source Converter | |
| CN205847090U (en) | A hybrid quasi-switching step-up DC-DC converter | |
| CN105978322B (en) | Switch capacitor type high-gain quasi Z source DC-DC converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |