CN115765445B - High-gain converter and control method thereof - Google Patents
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Abstract
The invention relates to a high-gain converter and a control method thereof, wherein the converter comprises a power supply, a first boosting module, a second boosting module and an output module; the first boosting module comprises a first switch tube, a second switch tube, a first boosting unit and a second boosting unit; the first end of the first switching tube is connected with the positive electrode of the power supply and the first end of the first boosting unit, and the second end of the first switching tube is connected with the second end of the second boosting unit; the first end of the second switching tube is connected with the second end of the first boosting unit, and the second end of the second switching tube is connected with the first end of the second boosting unit and the negative electrode of the power supply; the power supply is used for charging the first boosting unit, the second boosting unit and the second boosting module, the first boosting unit and the second boosting unit are used for charging the second boosting module, and the second boosting module is used for charging the output module.
Description
Technical Field
The invention belongs to the technical field of converters, and particularly relates to a high-gain converter and a control method thereof.
Background
The direct current Boost converter plays more and more important roles in various industrial applications at home and abroad, such as a renewable power generation system, a vehicle-mounted power supply, a fuel cell and the like, the Boost converter is the most widely applied direct current Boost converter at present, the input current of the Boost converter is continuous, the structure is simple, the duty ratio of a switching tube is often improved for improving the voltage gain of the Boost converter, but the high duty ratio causes the problems of large switching loss, poor transient response and the like.
Disclosure of Invention
The invention provides a high-gain converter and a control method thereof aiming at the problems of large switching loss and the like caused by high voltage gain generated by using a high duty ratio, and the high voltage gain is obtained without using the high duty ratio.
In a first aspect, a high gain converter is provided, which includes a power supply, a first boost module, a second boost module, and an output module;
the first boosting module comprises a first switch tube, a second switch tube, a first boosting unit and a second boosting unit;
the first end of the first switching tube is connected with the positive electrode of the power supply and the first end of the first boosting unit, and the second end of the first switching tube is connected with the second end of the second boosting unit; the first end of the second switching tube is connected with the second end of the first boosting unit, and the second end of the second switching tube is connected with the first end of the second boosting unit and the negative electrode of the power supply;
the power is used for charging the first boosting unit, the second boosting unit and the second boosting module, the first boosting unit and the second boosting unit are used for charging the second boosting module, and the second boosting module is used for charging the output module.
Optionally, the first voltage boosting unit includes a first inductor, a second inductor, a first diode, a second diode, and a first capacitor;
the first end of the first inductor is the first end of the first boosting unit, and the second end of the second inductor is the second end of the first boosting unit;
the first end of the first inductor is connected with the anode of the first diode, the second end of the first inductor is connected with the second end of the first capacitor, the first end of the first capacitor is connected with the cathode of the first diode and the first end of the second inductor, the second end of the second inductor is connected with the cathode of the second diode, and the anode of the second diode is connected with the second end of the first capacitor.
Optionally, the second voltage boost unit includes a third inductor, a fourth inductor, a third diode, a fourth diode, and a second capacitor;
the first end of the fourth inductor is the first end of the second boosting unit, and the second end of the third inductor is the second end of the second boosting unit;
the first end of the fourth inductor is connected with the cathode of the fourth diode, the second end of the fourth inductor is connected with the first end of the second capacitor, the second end of the second capacitor is connected with the anode of the fourth diode and the first end of the third inductor, the second end of the third inductor is connected with the anode of the third diode, and the cathode of the third diode is connected with the first end of the second capacitor.
Optionally, a first input end of the second boost module is connected to a first end of the second switching tube, and a second input end of the second boost module is connected to a second end of the first switching tube;
and the first output end and the second output end of the second boosting module are respectively connected with the output module.
Optionally, the second boost module includes a third capacitor, a fourth capacitor, a fifth diode, and a sixth diode;
the first end of the third capacitor is a first input end of the second boosting module, and the second end of the third capacitor is a first output end of the second boosting module; the second end of the fourth capacitor is a second input end of the second boosting module, and the first end of the fourth capacitor is a second output end of the second boosting module;
the first end of the third capacitor is connected with the anode of the fifth diode, the cathode of the fifth diode is connected with the first end of the fourth capacitor, the second end of the third capacitor is connected with the anode of the sixth diode, and the second end of the fourth capacitor is connected with the cathode of the sixth diode.
Optionally, the output module includes a fifth capacitor, a seventh diode, and a load;
the anode of the seventh diode is connected with the second output end of the second boosting module, the cathode of the seventh diode is connected with the first end of the fifth capacitor, the second end of the fifth capacitor is connected with the first output end of the second boosting module, and the load is connected to the two ends of the fifth capacitor in parallel.
Optionally, the first switch tube is an MOS tube, the first end of the first switch tube is a drain of the MOS tube, the second end of the first switch tube is a source of the MOS tube, and the third end of the first switch tube is a gate of the MOS tube.
Optionally, the second switch tube is an MOS tube, the first end of the second switch tube is a drain of the MOS tube, the second end of the second switch tube is a source of the MOS tube, and the third end of the second switch tube is a gate of the MOS tube.
Optionally, the voltage gain ratio of the converter is M = (7+D)/(1-D), and D is the duty ratio of the first switching tube.
In a second aspect, a method for controlling a high gain converter according to an aspect is provided, comprising the steps of:
generating a first control signal and a second control signal, wherein the frequency and the phase of the first control signal and the second control signal are the same;
transmitting the first control signal to a third end of the first switch tube, and controlling the on-off of the first switch tube;
and transmitting the second control signal to a third end of the second switching tube, and controlling the on-off of the second switching tube.
Optionally, the duty ratios of the first control signal and the second control signal are the same, and the converter has two working modes in one working period, where the two working modes include a first working mode and a second working mode;
a first working mode: the first switch tube, the second switch tube, the first diode, the second diode, the third diode, the fourth diode and the seventh diode are conducted, and the power supply charges the first inductor, the second inductor, the third inductor, the fourth inductor, the first capacitor and the second capacitor; the power supply, the third capacitor and the fourth capacitor provide energy for the load;
the second working mode is as follows: the first switch tube and the second switch tube are turned off, and the power supply, the first inductor, the second inductor, the third inductor, the fourth inductor, the first capacitor and the second capacitor charge the third capacitor and the fourth capacitor; the fifth capacitor provides energy to the load.
Has the advantages that: the power supply charges the first boosting module, the power supply and the first boosting module charge the second boosting module, the power supply and the second boosting module provide energy for a load, and the high boosting ratio of the converter is realized by utilizing the charge and discharge of the first boosting module and the second boosting module.
Drawings
The invention is described in further detail below with reference to the figures and specific embodiments.
Fig. 1 is a block diagram of a high-gain converter according to this embodiment.
Fig. 2 is a schematic diagram of an overall structure of a high-gain converter according to this embodiment.
Fig. 3 is an equivalent circuit diagram of the high-gain converter provided in this embodiment in the first operating mode.
Fig. 4 is an equivalent circuit diagram of the high-gain converter in the second operating mode according to the present embodiment.
Fig. 5 is a waveform diagram of the main operation of a high-gain converter provided in this embodiment.
Fig. 6 is a second diagram of the main operating waveforms of a high-gain converter provided in this embodiment.
Reference numerals:
10. a first boost module; 101. a first boosting unit; 102. a second boosting unit; 20. a second boost module; 30. an output module;
s1, a first switch tube; s2, a second switching tube;
l1, a first inductor; l2 and a second inductor; l3, a third inductor; l4, a fourth inductor;
d1, a first diode; d2, a second diode; d3, a third diode; d4, a fourth diode; d5, a fifth diode; d6, a sixth diode; d7, a seventh diode;
c1, a first capacitor; c2, a second capacitor; c3, a third capacitor; c4, a fourth capacitor; c5, a fifth capacitor;
vin, a power supply; r, load.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
As shown in fig. 1, the present embodiment provides a high gain converter, which includes a power source Vin, a first boost module 10, a second boost module 20, and an output module 30.
The first boost module 10 includes two switching tubes and two boost units, which are respectively a first boost unit 101, a second boost unit 102, a first switching tube S1 and a second switching tube S2; in this embodiment, the first voltage boosting unit 101 and the second voltage boosting unit 102 have the same structure and are symmetrically disposed.
Specifically, as shown in fig. 2, the first voltage boosting unit 101 includes a first inductor L1, a second inductor L2, a first diode D1, a second diode D2, and a first capacitor C1; the first end of the first inductor L1 is connected with the anode of the first diode D1, the second end of the first inductor L1 is connected with the second end of the first capacitor C1, the first end of the first capacitor C1 is connected with the cathode of the first diode D1 and the first end of the second inductor L2, the second end of the second inductor L2 is connected with the cathode of the second diode D2, and the anode of the second diode D2 is connected with the second end of the first capacitor C1. The first end of the first inductor L1 is a first end of the first voltage boosting unit 101, and the second end of the second inductor L2 is a second end of the first voltage boosting unit 101.
Specifically, the second boosting unit 102 includes a third inductor L3, a fourth inductor L4, a third diode D3, a fourth diode D4, and a second capacitor C2; a first end of the fourth inductor L4 is connected to a cathode of the fourth diode D4, a second end of the fourth inductor L4 is connected to a first end of the second capacitor C2, a second end of the second capacitor C2 is connected to an anode of the fourth diode D4 and a first end of the third inductor L3, a second end of the third inductor L3 is connected to an anode of the third diode D3, and a cathode of the third diode D3 is connected to a first end of the second capacitor C2. A first end of the fourth inductor L4 is a first end of the second voltage boosting unit 102, and a second end of the third inductor L3 is a second end of the second voltage boosting unit 102.
The positive pole of the power Vin is connected with the first end of the first switch tube S1 and the first end of the first voltage boosting unit 101, the negative pole of the power Vin is connected with the second end of the second switch tube S2 and the first end of the second voltage boosting unit 102, the second end of the first switch tube S1 is connected with the second end of the second voltage boosting unit 102, and the first end of the second switch tube S2 is connected with the second end of the first voltage boosting unit 101.
Specifically, the second boost module 20 includes a third capacitor C3, a fourth capacitor C4, a fifth diode D5, and a sixth diode D6; the first end of the third capacitor C3 is connected to the anode of the fifth diode D5, the cathode of the fifth diode D5 is connected to the first end of the fourth capacitor C4, the second end of the third capacitor C3 is connected to the anode of the sixth diode D6, and the second end of the fourth capacitor C4 is connected to the cathode of the sixth diode D6.
A first end of the third capacitor C3 is a first input end of the second boost module 20, and the first input end of the second boost module 20 is connected with a first end of the second switching tube S2; a second end of the fourth capacitor C4 is a second input end of the second boost module 20, and a second input end of the second boost module 20 is connected to a second end of the first switch tube S1; the second end of the third capacitor C3 is the first output end of the second boost module 20, the first end of the fourth capacitor C4 is the second output end of the second boost module 20, and the first output end and the second output end of the second boost module 20 are respectively connected with the output module 30.
Specifically, the output module 30 includes a fifth capacitor C5, a seventh diode D7, and a load R; an anode of the seventh diode D7 is connected to the second output terminal of the second boost module 20, a cathode of the seventh diode D7 is connected to the first end of the fifth capacitor C5, the second end of the fifth capacitor C5 is connected to the first output terminal of the second boost module 20, and the load R is connected in parallel to both ends of the fifth capacitor C5.
In this embodiment, the first switch tube S1 is an MOS tube, a first end of the first switch tube S1 is a drain of the MOS tube, a second end of the first switch tube S1 is a source of the MOS tube, and a third end of the first switch tube S1 is a gate of the MOS tube. The second switch tube S2 is an MOS tube, the first end of the second switch tube S2 is a drain electrode of the MOS tube, the second end of the second switch tube S2 is a source electrode of the MOS tube, and the third end of the second switch tube is a grid electrode of the MOS tube.
Respectively transmitting control signals to a third end of the first switching tube S1 and a third end of the second switching tube S2, so that the first switching tube S1 and the second switching tube S2 are simultaneously turned on and then turned off in a working period, and the converter has two working modes in the working period, wherein the two working modes comprise a first working mode and a second working mode;
a first working mode: as shown in fig. 3, the first switch tube S1, the second switch tube S2, the first diode D1, the second diode D2, the third diode D3, the fourth diode D4 and the seventh diode D7 are turned on, the power source Vin charges the first inductor L1, the second inductor L2, the third inductor L3, the fourth inductor L4, the first capacitor C1 and the second capacitor C2, and the currents of the first inductor L1, the second inductor L2, the third inductor L3, the fourth inductor L4, the first capacitor C1 and the second capacitor C2 increase linearly; the power source Vin, the third capacitor C3 and the fourth capacitor C4 provide energy to the load R.
The second working mode is as follows: as shown in fig. 4, the first switch tube S1 and the second switch tube S2 are turned off, the power source Vin, the first inductor L1, the second inductor L2, the third inductor L3, the fourth inductor L4, the first capacitor C1 and the second capacitor C2 charge the third capacitor C3 and the fourth capacitor C4, and the currents of the first inductor L1, the second inductor L2, the third inductor L3 and the fourth inductor L4 are reduced; the fifth capacitor C5 supplies energy to the load R.
In the first working mode, the power source Vin charges the first voltage boosting unit 101 and the second voltage boosting unit 102 in the first module, and the power source Vin and the second voltage boosting module 20 charge the output module 30 at the same time; in the second operation mode, the power source Vin and the first voltage boosting module 10 charge the second voltage boosting module 20, and the fifth capacitor C5 in the output module 30 charges the load R. In this embodiment, the power source Vin charges the first voltage boosting module 10, the power source Vin and the first voltage boosting module 10 charge the second voltage boosting module 20, the power source Vin and the second voltage boosting module 20 provide energy for the load R, and the high voltage boosting ratio of the converter is realized by using the alternating charging and discharging of the first voltage boosting module 10 and the second voltage boosting module 20.
The calculation process of the gain ratio of the input voltage to the output voltage of the converter provided by this embodiment is as follows:
from the first mode of operation, the following relationship can be obtained:
in the formula (I), the compound is shown in the specification,V L1 is the voltage of the first inductor L1,V L2 is the voltage of the second inductor L2,V L3 is the voltage of the third inductor L3,V L4 is the voltage of the fourth inductor L4,V in is the voltage of the power supply Vin,V o is the voltage of the load R and is,V C1 is the voltage of the first capacitor C1,V C2 is the voltage of the second capacitor C2,V C3 is the voltage of the third capacitor C3,V C4 is the voltage of the fourth capacitor C4.
From the second mode of operation, the following relationship can be obtained:
in the formula (I), the compound is shown in the specification,V L is the voltage of the inductors L1, L2, L3, L4.
The principle of volt-second balance of inductance is utilized to obtain:
in the formula (I), the compound is shown in the specification,Dthe duty cycle of the switching tubes S1, S2,T S is the duty cycle of the converter; in this embodiment, the duty ratio of the first switch tube S1 is the same as that of the second switch tube S2.
The gain ratio M of the input voltage to the output voltage of the converter provided by the present embodiment can be obtained according to the above formula:
the gain ratio of the converter provided by the embodiment is obviously higher than that of the conventional converter, and the switching stress of the first switching tube S1 and the second switching tube S2 is low.
When the first switching tube S1 and the second switching tube S2 are in an off state, the voltage drop of the first switching tube S1 obtained in the second working mode is:
further calculations may yield:
in the formula (I), the compound is shown in the specification,V S1 is the voltage drop of the first switching tube S1,V S2 the voltage drop of the second switching tube S2 is the same as that of the first switching tube S1 due to the symmetrical structure of the converter, and the voltage stress of the first switching tube S1 and the second switching tube S2 is low in the converter provided by this embodiment.
Example 2
A method of controlling a high gain converter, comprising the steps of:
generating a first control signal and a second control signal, transmitting the first control signal to a third end of the first switching tube S1, and controlling the on-off of the first switching tube S1; and transmitting the second control signal to a third end of the second switch tube S2, and controlling the on-off of the second switch tube S2.
The first control signal and the second control signal have the same frequency, phase and duty ratio, so that the first switching tube S1 and the second switching tube S2 are switched on or off simultaneously, the converter has two working modes in one working period, and the two working modes comprise a first working mode and a second working mode; in this embodiment, the duty ratio of the first switch tube S1 and the second switch tube S2 is less than 0.5.
A first mode of operation: as shown in fig. 3, the first switch tube S1, the second switch tube S2, the first diode D1, the second diode D2, the third diode D3, the fourth diode D4 and the seventh diode D7 are turned on, the power source Vin charges the first inductor L1, the second inductor L2, the third inductor L3, the fourth inductor L4, the first capacitor C1 and the second capacitor C2, and the currents of the first inductor L1, the second inductor L2, the third inductor L3, the fourth inductor L4, the first capacitor C1 and the second capacitor C2 increase linearly; the power source Vin, the third capacitor C3 and the fourth capacitor C4 provide energy for the load R;
the second working mode is as follows: as shown in fig. 4, the first switch tube S1 and the second switch tube S2 are turned off, the power source Vin, the first inductor L1, the second inductor L2, the third inductor L3, the fourth inductor L4, the first capacitor C1 and the second capacitor C2 charge the third capacitor C3 and the fourth capacitor C4, and the currents of the first inductor L1, the second inductor L2, the third inductor L3 and the fourth inductor L4 are reduced; the fifth capacitor C5 supplies energy to the load R.
The main working waveform diagrams of the variators are shown in figures 5 and 6,V g1-2 is the grid voltage of the switching tubes S1 and S2;V g1-2 in thatDTThe high level is set for the time period,Dis the duty ratio of the switching tubes S1 and S2,Tis the duty cycle of the converter;i L1-4 the currents of the inductors L1, L2, L3 and L4;V L1-4 the voltages of the inductors L1, L2, L3 and L4;V C1-2 is the voltage of the capacitors C1, C2;V C3-4 the voltages of the capacitors C3, C4;V D1-4 is the voltage of the diodes D1, D2, D3, D4; the voltage of the diodes D1, D2, D3, D4 at the turn-off isV O /(7+D)，V O Is the voltage of the load R;V D5-6 the voltage of the diodes D5 and D6, and the voltage of the diodes D5 and D6 at the cut-off state is 4 ×V O /(7+D)；V S1-2 Is the voltage drop of the switching tubes S1, S2.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (4)
1. A high-gain converter is characterized by comprising a power supply, a first boosting module, a second boosting module and an output module;
the first boosting module comprises a first switch tube, a second switch tube, a first boosting unit and a second boosting unit;
the first end of the first switch tube is connected with the positive pole of the power supply and the first end of the first boosting unit, and the second end of the first switch tube is connected with the second end of the second boosting unit; the first end of the second switching tube is connected with the second end of the first boosting unit, and the second end of the second switching tube is connected with the first end of the second boosting unit and the negative electrode of the power supply;
the power supply is used for charging the first boosting unit, the second boosting unit and the second boosting module, the first boosting unit and the second boosting unit are used for charging the second boosting module, and the second boosting module is used for charging the output module;
the first boosting unit comprises a first inductor, a second inductor, a first diode, a second diode and a first capacitor;
the first end of the first inductor is the first end of the first boosting unit, and the second end of the second inductor is the second end of the first boosting unit;
the first end of the first inductor is connected with the anode of the first diode, the second end of the first inductor is connected with the second end of the first capacitor, the first end of the first capacitor is connected with the cathode of the first diode and the first end of the second inductor, the second end of the second inductor is connected with the cathode of the second diode, and the anode of the second diode is connected with the second end of the first capacitor;
the second boosting unit comprises a third inductor, a fourth inductor, a third diode, a fourth diode and a second capacitor;
the first end of the fourth inductor is the first end of the second boosting unit, and the second end of the third inductor is the second end of the second boosting unit;
the first end of the fourth inductor is connected with the cathode of the fourth diode, the second end of the fourth inductor is connected with the first end of the second capacitor, the second end of the second capacitor is connected with the anode of the fourth diode and the first end of the third inductor, the second end of the third inductor is connected with the anode of the third diode, and the cathode of the third diode is connected with the first end of the second capacitor;
the first input end of the second boosting module is connected with the first end of the second switch tube, and the second input end of the second boosting module is connected with the second end of the first switch tube;
a first output end and a second output end of the second boosting module are respectively connected with the output module;
the second boosting module comprises a third capacitor, a fourth capacitor, a fifth diode and a sixth diode;
the first end of the third capacitor is a first input end of the second boosting module, and the second end of the third capacitor is a first output end of the second boosting module; the second end of the fourth capacitor is a second input end of the second boosting module, and the first end of the fourth capacitor is a second output end of the second boosting module;
the first end of the third capacitor is connected with the anode of a fifth diode, the cathode of the fifth diode is connected with the first end of a fourth capacitor, the second end of the third capacitor is connected with the anode of a sixth diode, and the second end of the fourth capacitor is connected with the cathode of the sixth diode;
the output module comprises a fifth capacitor, a seventh diode and a load;
the anode of the seventh diode is connected with the second output end of the second boosting module, the cathode of the seventh diode is connected with the first end of the fifth capacitor, the second end of the fifth capacitor is connected with the first output end of the second boosting module, and the load is connected to the two ends of the fifth capacitor in parallel;
respectively transmitting control signals to a third end of the first switching tube and a third end of the second switching tube, so that the first switching tube and the second switching tube are simultaneously switched on and then switched off in a working period, the duty ratio of the first switching tube and the second switching tube is less than 0.5, and the converter has two working modes in the working period, wherein the two working modes comprise a first working mode and a second working mode;
a first working mode: the first switch tube, the second switch tube, the first diode, the second diode, the third diode, the fourth diode and the seventh diode are conducted, the power supply charges the first inductor, the second inductor, the third inductor, the fourth inductor, the first capacitor and the second capacitor, and the currents of the first inductor, the second inductor, the third inductor, the fourth inductor, the first capacitor and the second capacitor linearly rise; the power supply, the third capacitor and the fourth capacitor provide energy for the load;
the second working mode is as follows: the first switch tube and the second switch tube are turned off, the power supply, the first inductor, the second inductor, the third inductor, the fourth inductor, the first capacitor and the second capacitor charge the third capacitor and the fourth capacitor, and the currents of the first inductor, the second inductor, the third inductor and the fourth inductor are reduced; the fifth capacitor supplies energy to the load;
the voltage gain ratio of the converter is M = (7+D)/(1-D), and D is the duty ratio of the first switching tube.
2. The high-gain converter according to claim 1, wherein the first switch transistor is an MOS transistor, the first terminal of the first switch transistor is a drain of the MOS transistor, the second terminal of the first switch transistor is a source of the MOS transistor, and the third terminal of the first switch transistor is a gate of the MOS transistor.
3. The high-gain converter according to claim 2, wherein the second switch transistor is an MOS transistor, the first terminal of the second switch transistor is a drain of the MOS transistor, the second terminal of the second switch transistor is a source of the MOS transistor, and the third terminal of the second switch transistor is a gate of the MOS transistor.
4. A method for controlling a high gain converter according to claim 3, comprising the steps of:
generating a first control signal and a second control signal, wherein the frequency and the phase of the first control signal and the second control signal are the same;
transmitting the first control signal to a third end of the first switch tube, and controlling the on-off of the first switch tube;
transmitting a second control signal to a third end of the second switching tube, and controlling the on-off of the second switching tube;
the duty ratios of the first control signal and the second control signal are the same, the duty ratios of the first switching tube and the second switching tube are less than 0.5, and the converter has two working modes in one working period, wherein the two working modes comprise a first working mode and a second working mode;
a first mode of operation: the first switch tube, the second switch tube, the first diode, the second diode, the third diode, the fourth diode and the seventh diode are conducted, and the power supply charges the first inductor, the second inductor, the third inductor, the fourth inductor, the first capacitor and the second capacitor; the power supply, the third capacitor and the fourth capacitor provide energy for the load;
and a second working mode: the first switch tube and the second switch tube are turned off, and the power supply, the first inductor, the second inductor, the third inductor, the fourth inductor, the first capacitor and the second capacitor charge the third capacitor and the fourth capacitor; the fifth capacitor supplies energy to the load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310027139.4A CN115765445B (en) | 2023-01-09 | 2023-01-09 | High-gain converter and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310027139.4A CN115765445B (en) | 2023-01-09 | 2023-01-09 | High-gain converter and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
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| CN116155102B (en) * | 2023-04-20 | 2023-07-25 | 深圳市恒运昌真空技术有限公司 | High-gain converter |
| CN116191884B (en) * | 2023-04-26 | 2023-07-21 | 深圳市恒运昌真空技术有限公司 | Boost-buck bidirectional converter |
| CN116505771B (en) * | 2023-04-28 | 2024-02-02 | 深圳市恒运昌真空技术股份有限公司 | Coulomb force adsorption high-voltage circuit with multiple working modes |
| CN116232062B (en) * | 2023-05-09 | 2023-07-25 | 深圳市恒运昌真空技术有限公司 | High-voltage gain converter based on coupling inductance |
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| CN205407589U (en) * | 2016-03-10 | 2016-07-27 | 兰州交通大学 | High voltage gain's DCDC booster converter circuit |
| CN107733221B (en) * | 2017-10-30 | 2020-07-28 | 西安交通大学 | Multi-unit coupling inductance switch capacitor network high-gain direct current converter |
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Address after: 518102 Room 101, 201, 301, Building B, Functional Support Area, Taohuayuan Zhichuang Town, Tiegang Community, Xixiang Street, Baoan District, Shenzhen, Guangdong Province Patentee after: Shenzhen Hengyunchang Vacuum Technology Co.,Ltd. Address before: Room 101, 201, 301, Building B, Functional Supporting Area, Taohuayuan Zhichuang Town, Tiegang Community, Xixiang Street, Baoan District, Shenzhen, Guangdong 518100 Patentee before: SHENZHEN HENGYUNCHANG VACUUM TECHNOLOGY CO.,LTD. |