TW202046637A - High voltage gain step-up - Google Patents

Abstract

Embodiments disclose a high voltage gain step-up converter for receiving an input voltage and converting it into a voltage output to a load. The high voltage gain step-up converter includes a first inductance, a second inductance, a third inductance, a first diode, a second diode, a third diode, a fourth diode, a fifth diode, a first capacitor, a second capacitor, a third capacitor, a switch, an output diode and an output capacitor. By turning on and off the switch in accordance with the desired state of the diodes, the first inductance, the second inductance, the third inductance, the first capacitor, the second capacitor and the third capacitor are connected in series or in parallel to storage or release the energy of the input voltage via the output diode, and the output capacitor stores or releases the energy.

Description

High-power boost power conversion device

The present invention relates to a high-power boost power conversion device, in particular to a high-power boost power conversion device that utilizes multiple inductors and multiple capacitor switching techniques to achieve high-power boost conversion efficiency.

Referring to the first figure, it is a conventional step-up power conversion device that receives an input voltage V _in and converts it into an output voltage V _{o to} provide to a load R. The step-up power conversion device includes a first inductor L ₀₁ , a The second inductor L ₀₂ , a first diode D ₀₁ , a second diode D ₀₂ , a third diode D ₀₃ , a fourth diode D ₀₄ , a switch S ₀₁ , and an output Capacitance C ₀₁ .

The first inductor L ₀₁ has a first inductor first end L _01a electrically connected to the positive terminal of the input voltage V _in , and a first inductor second end L _01b , and the second inductor L ₀₂ has a second inductor A first terminal L _02a and a second inductor second terminal L _02b . The first diode D ₀₁ has a first diode anode D _01a electrically connected to the first inductor second terminal L _01b , and a first A diode cathode D _01b , the second diode D ₀₂ has a second diode anode D _02a electrically connected to the second end L _01b of the first inductor, and electrically connected to the first end L of the second inductor _02a , a second diode cathode D _02b , the third diode D ₀₃ has a third diode anode D _03a electrically connected to the positive terminal of the input voltage V _in , and electrically connected to the second inductor a fourth diode D the anode a cathode of the third diode D L _02a end _03B of the fourth diode D ₀₄ is electrically connected with the cathode of the first diode D of _{04A 01B,} and a fourth A diode cathode D _04b , the switch S ₀₁ has a switch first terminal S _01a electrically connected to the first diode D ₀₁ cathode D _01b , and a switch second terminal electrically connected to the negative terminal of the input voltage V _in end of the S _01b, the output capacitor C ₀₁ is electrically connected between the cathode of the fourth diode D _04b and the negative terminal of the input voltage V _in, the output of the load R connected in parallel with the capacitor C _01.

The voltage gain ratio of the conventional step-up power conversion device is (1+D)/(1-D), where D is a duty cycle of the switch S ₀₁ , and D is between 0 and 1. However, the voltage gain ratio of the step-up power conversion device still has room for further improvement.

Therefore, the object of the present invention is to provide a high-power boost power conversion device with high-power boost.

Therefore, the high-power boost power conversion device of the present invention receives an input voltage and converts the input voltage into an output voltage to a load, and the high-power boost power conversion device includes a first inductor, a second inductor, and a third inductor. Inductance, a first diode, a second diode, a third diode, a fourth diode, a fifth diode, a first capacitor, a second capacitor, and a third Capacitors, a switch, an output diode, and an output capacitor.

The first inductor has a first inductor first end electrically connected to the positive pole of the input voltage, and a first inductor second end, the second inductor has a second inductor first end, and a second inductor second Terminal, the third inductor has a first terminal of a third inductor, and a second terminal of a third inductor, the first diode has a first diode anode electrically connected to the second terminal of the first inductor, and electrical A first diode cathode connected to the second end of the third inductor, the second diode having a second diode anode electrically connected to the positive electrode of the input voltage, and electrically connected to the first end of the second inductor A second diode cathode, the third diode having a third diode anode electrically connected to the second end of the second inductor, and a third diode cathode electrically connected to the second end of the third inductor, The fourth diode has a fourth diode anode electrically connected to the positive electrode of the input voltage, and a fourth diode cathode electrically connected to the first end of the third inductor, and the fifth diode has electrical A fifth diode anode connected to the positive pole of the input voltage and a fifth diode cathode, the first capacitor has a first capacitor first end electrically connected to the second end of the first inductor, and electrically connected to the A first capacitor second terminal at the first terminal of the second inductor, the second capacitor having a second capacitor first terminal electrically connected to the second terminal of the second inductor, and a first capacitor electrically connected to the first terminal of the third inductor The second terminal of two capacitors, the third capacitor having a first terminal of a third capacitor electrically connected to the second terminal of the third inductor, and a second terminal of a third capacitor electrically connected to the cathode of the fifth diode, the switch has A first terminal of a switch electrically connected to the cathode of the first diode and a second terminal of a switch electrically connected to the negative electrode of the input voltage, and controlled to switch between a conducting state and a non-conducting state, the output diode The body has an output diode anode electrically connected to the second end of the third capacitor, and an output diode cathode. The output capacitor has an output capacitor first end electrically connected to the output diode cathode, and is electrically connected to the The second terminal of an output capacitor at the second terminal of the switch, the cross voltage of the output capacitor is the output voltage, and the load is connected in parallel with the output capacitor to receive the output voltage.

Further, when the switch is in the on state, the energy of the input voltage passes through the first diode, the second diode, the third diode, the fourth diode, and the fifth diode. And the switch is transmitted to the first inductor, the second inductor, the third inductor, the first capacitor, the second capacitor, and the third capacitor, the first inductor, the second inductor, and the third inductor , The first capacitor, the second capacitor, and the third capacitor are connected in parallel with the input voltage and store the energy of the input voltage, and the output capacitor releases energy to provide the output voltage to the load. When the switch is off In the on state, the input voltage is connected in series with the first inductor, the first capacitor, the second inductor, the second capacitor, the third inductor, and the third capacitor, and the stored voltage is released through the output diode Energy is provided to the output capacitor and the load.

Further, the voltage gain ratio of the output voltage to the input voltage is (4-D)/(1-D), where D is a duty cycle for the switch to switch between the conducting state and the non-conducting state, and D is between Between 0 and 1.

Further, the inductance values of the first inductor, the second inductor, and the third inductor are the same.

Further, the capacitance values of the first capacitor, the second capacitor, and the third capacitor are the same.

Further, the high-power boost power conversion device further includes a control unit that outputs a pulse wave modulation signal, and the switch receives the pulse wave modulation signal and is controlled by the pulse wave modulation signal to switch to the on state and Between non-conductive state.

Further, the switch is an N-type metal oxide semiconductor field effect transistor.

According to the above technical features, the following effects can be achieved:

1. By switching the switch to match whether the first diode to the fifth diode are turned on, the first inductor, the second inductor, the third inductor, the first capacitor, and the second The capacitor, and the third capacitor are connected in parallel or in series, to store or release the energy of the input voltage through the output diode, and the output capacitor to store or release the energy, so that the high boost power conversion device of the present invention is When boosting, it has a high-fold boost voltage gain, where the voltage gain is (4-D)/(1-D), and D is the duty cycle of the switch.

2. The high-power boosting power conversion device of the present invention can achieve high-boosting voltage gain only by using the switch, so it has low-cost efficiency.

Based on the above technical features, the main effects of the high-power boost power conversion device of the present invention will be clearly presented in the following embodiments.

Referring to the second figure, an embodiment of the high-power step-up power conversion device of the present invention is suitable for receiving an input voltage V _in and converting the input voltage V _in into an output voltage _Vo to a load R. The input voltage V _in is A direct current voltage, the output voltage _Vo is also a direct current voltage. The high-power boost power conversion device includes a first inductor L ₁ , a second inductor L ₂ , a third inductor L ₃ , a first diode D ₁ , a second diode D ₂ , and a third A diode D ₃ , a fourth diode D ₄ , a fifth diode D ₅ , a first capacitor C ₁ , a second capacitor C ₂ , a third capacitor C ₃ , a switch S ₁ , An output diode D _o , an output capacitor C _o , and a control unit 1.

The first inductor L ₁ has a first inductor first end L _1a electrically connected to the positive electrode of the input voltage V _in , and a first inductor second end L _1b . The second inductor L ₂ has a second inductor first end L _2a and a second inductor second end L _2b . The third inductor L ₃ has a third inductor first end L _3a and a third inductor second end L _3b . Wherein, the inductance values of the first inductor L ₁ , the second inductor L ₂ , and the third inductor L ₃ are the same.

The first diode D ₁ having a first inductor electrically connected to the second end of a L _1b of the first diode anode D _1a, and electrically connected to the second end of the third inductor L _3b is a cathode D _1b. The second diode D ₂ has electrically connected to the positive input voltage V _in to an anode of the second diode D _2a, and is electrically connected to a first end of the second inductor L _2a is a second cathode diode D _2b . The third diode D ₃ has a third diode anode D _3a electrically connected to the second end L _2b of the second inductor, and a third diode electrically connected to the second end L _3b of the third inductor Cathode D _3b . The fourth diode is electrically connected to the D _{input. 4} having a voltage V _in a positive electrode of the anode of the fourth diode D _4a, and electrically connected to the first end of the third inductor L _3a is a cathode of the fourth diode D _4b . A fifth diode D _5a anode of the fifth diode D ₅ is connected electrically with the input voltage V _in the positive electrode, and a cathode of the fifth diode D _5b thereof.

The first capacitor C ₁ has a first capacitor first terminal C _1a electrically connected to the second terminal L _1b of the first inductor, and a first capacitor second terminal C electrically connected to the first terminal L _2a of the second inductor _1b . The second capacitor C ₂ has a second capacitor first terminal C _2a electrically connected to the second terminal L _2b of the second inductor, and a second capacitor second terminal C electrically connected to the third inductor first terminal L _{3a 2b} . The third capacitor C ₃ has a third capacitor first terminal C _3a electrically connected to the third inductor second terminal L _3b , and a third capacitor second terminal C electrically connected to the fifth diode cathode D _{5b 3b} . Wherein, the capacitance values of the first capacitor C ₁ , the second capacitor C ₂ , and the third capacitor C ₃ are the same.

The switch S ₁ is an N-type metal oxide semiconductor field effect transistor, and has a switch first terminal S _1a electrically connected to the first diode cathode D _1b , and electrically connected to the negative electrode of the input voltage V _in A second terminal S _{1b of} a switch is controlled to switch between a conducting state and a non-conducting state. The first terminal S _1a of the switch is a drain, and the second terminal S _1b of the switch is a source.

The output diode D _o having a third capacitor electrically connected to the second output terminal of a C _3b anode of the diode D _oa, and a cathode of the output diode D _ob. The output capacitor C _o having a cathode electrically connected to the output of two D _ob first terminal of an output capacitor C _OA, and a second switch electrically connected to the terminal S of a second terminal of the output capacitor C _{ob 1b} of the electrode body, the output capacitor C The cross voltage of _o is the output voltage V _o , and the load R is connected in parallel with the output capacitor C _o to receive the output voltage V _o .

The control unit 1 outputs a pulse wave modulation signal, and the switch S ₁ receives the pulse wave modulation signal and is controlled by the pulse wave modulation signal to switch between a conducting state and a non-conducting state. The switching sequence diagram of the switch S ₁ will be further explained in two stages below.

See FIG. Third, the operation timing chart of the present embodiment, wherein the parameter representative of a control voltage V _GS1 of the pulse modulation signal whether the switch S ₁ is turned on, the switch S is ₁ gate - source signal, the parameters v _L1 , v _L2 , and v _L3 represent the voltages of the first inductor L ₁ , the second inductor L ₂ , and the third inductor L ₃ respectively, and the parameters i _L1 , i _L2 , and i _L3 represent the voltages flowing through the first inductor L 1 The currents of the inductor L ₁ , the second inductor L ₂ , and the third inductor L _3. The parameters v _S1 and v _D5 represent the voltage across the switch S ₁ and the fifth diode D ₅ , and the parameters v _D1 , v _D4 represents the cross pressure of the first diode D ₁ and the fourth diode D ₄ , and the parameters v _D2 and v _D3 represent the second diode D ₂ and the third diode D _{3 respectively} The parameter v _D0 represents the cross voltage of the output diode D _o , the parameter T _S represents the cycle time of the pulse wave modulation signal, and the parameter D is that the switch S _{1 is} switched between the conducting state and the non-conducting state a duty, and D is between 0 and 1, T _S parameter S for switching of a _switching cycle.

Refer to the fourth and fifth figures, which are the circuit diagrams of this embodiment in the second stage of operation, in which the conductive components are represented by solid lines, and the non-conductive components are represented by dashed lines.

The first stage (time: t ₀ -t ₁ ):

See FIG third and fourth diagram, wherein the gate switch S ₁ - v _GS1 source signal is greater than zero, the switch S ₁ is turned on state, the first diode D _1, the second diode D _2. The third diode D ₃ , the fourth diode D ₄ , and the fifth diode D ₅ are conductive, and the output diode D _o is non-conductive.

The current path of the first stage is shown by the arrow in the fourth figure. The energy of the input voltage V _in passes through the first diode D ₁ , the second diode D ₂ , the third diode D ₃ , the fourth diode D ₄ , and the fifth diode D ₅ and the switch S _{1 are} transmitted to the first inductor L ₁ , the second inductor L ₂ , the third inductor L ₃ , the first capacitor C ₁ , the second capacitor C ₂ , and the third capacitor C ₃ , the first inductor L ₁ , the second inductor L ₂ , the third inductor L ₃ , the first capacitor C ₁ , the second capacitor C ₂ , and the third capacitor C _{3 are} all related to the input voltage V _in parallel and storing the energy of the input voltage V _in. Since the inductance values of the first inductance L ₁ , the second inductance L ₂ , and the third inductance L ₃ are the same, they cross the first inductance L ₁ , the second inductance L ₂ , and the third inductance respectively. The voltage value of the inductor L ₃ is equal to the input voltage V _in , and the current flowing through the first inductor L ₁ , the second inductor L ₂ , and the third inductor L ₃ increases linearly. Moreover, the capacitance values of the first capacitor C ₁ , the second capacitor C ₂ , and the third capacitor C ₃ are the same, so they cross the first capacitor C ₁ , the second capacitor C ₂ , and the third capacitor respectively. The voltage value of the capacitor C ₃ is equal to the input voltage V _in . The first diode D ₁ , the second diode D ₂ , the third diode D ₃ , the fourth diode D ₄ , the fifth diode D ₅ and the switch S ₁ are Turned on, the first diode D ₁ , the second diode D ₂ , the third diode D ₃ , the fourth diode D ₄ , the fifth diode D ₅ and the switch The cross pressure of S ₁ is zero. The output capacitor C _o releases energy to provide the output voltage _Vo to the load R. The output diode D _o is non-conductive, the voltage stress of this output diode D _o is equal to the input voltage minus the output voltage. When the time is t ₁ and the switch S ₁ is controlled to switch to a non-conductive state, the first stage ends.

The second stage (time: t ₁ -t ₂ ):

See FIG third and fifth FIG, wherein the gate switch S ₁ - v _GS1 source signal is equal to zero, the switch S ₁ is non-conducting state, the first diode D _1, the second diode D _2. The third diode D ₃ , the fourth diode D ₄ , and the fifth diode D ₅ are non-conducting, and the output diode D _o is conducting. When the time is t ₂ and the switch S ₁ is controlled to switch to the on state again, the second phase ends, and the first phase is returned to start a new cycle.

The current path of the second stage is shown by the arrow in the fifth figure. The input voltage V _{in is in series} with the first inductor L ₁ , the first capacitor C ₁ , the second inductor L ₂ , the second capacitor C ₂ , the third inductor L ₃ , and the third capacitor C ₃ , The stored energy released by the output diode D _{o is} provided to the output capacitor C _o and the load R, so that the voltage across the output capacitor C _o and the load R is the output voltage V _o , at this time, respectively The voltage values across the first inductor L ₁ , the second inductor L ₂ , and the third inductor L ₃ are all equal to (4V _in -V _o )/3, because the first inductor L ₁ and the second inductor L L ₂ and the third inductor L ₃ release energy. Therefore, the currents i _L1 , i _L2 , and i _L3 flowing through the first inductor L ₁ , the second inductor L ₂ , and the third inductor L ₃ are linear Decrease, and the capacitances of the first capacitor C ₁ , the second capacitor C ₂ , and the third capacitor C ₃ are large enough to cross the first capacitor C ₁ , the second capacitor C ₂ , and the The voltage value of the third capacitor C ₃ can be regarded as a fixed value, which is equal to the input voltage V _in . The switch S ₁ and the fifth diode D ₅ are non-conductive, and the voltage stress of the switch S ₁ and the fifth diode D ₅ is equal to the output voltage _Vo minus the input voltage V _in . The first diode D ₁ and the fourth diode D ₄ are non-conducting, then the voltage stress of the first diode D ₁ and the fourth diode D ₄ is equal to 2 (V _o -V _in )/3. The second diode D ₂ and the third diode D ₃ are non-conducting, then the voltage stress of the second diode D ₂ and the third diode D ₃ is equal to ((V _o -V _in ) / 3. the output diode D _o is turned on, the output of the zero cross voltage of diode D _o.

In the first stage and the second stage, based on the volt-second balance principle on the first inductor L ₁ , the voltage gain ratio of the output voltage V _o to the input voltage V _in can be obtained as (4-D)/(1- D).

The present invention is operated when the input voltage V _in is 24 volts and the duty cycle D is about 0.592, and the output voltage V _o is 200 volts and the full-load output power is 200 W analog waveform diagrams, as shown in Figures 6 to 11 Shown.

See FIG. Sixth, for the output voltage V _o, the voltage across the first capacitor C and the input voltage V _{in 1} analog waveform. The horizontal axis is time, the scale is 10ms/div, the vertical axis is voltage, the scale is 50V/div. Wherein, the voltage across the first capacitor C ₁ is 24 volts. From this figure, it can be verified that the present invention can boost a low DC voltage into a high DC voltage, and indeed can provide a high-fold boost effect.

Refer to the seventh figure, which shows the analog waveforms of the cross voltage v _{L1 of} the first inductor L ₁ and the gate-source signal v _GS1 of the switch S ₁ . The horizontal axis is time, the scale is 20μs/div, the vertical axis is voltage, and the scale is v _L1 : 20V/div. Wherein, when the switch S ₁ is in the on state, the voltage across the first inductor L ₁ is v _L1 =V _in =24 volts. When the switch S ₁ is in a non-conducting state, the voltage across the first inductor L ₁ v _L1 =(4V _in -V _o )/3=-34.7 volts.

Referring to the eighth figure, it is a simulated waveform of the currents i _L1 , i _L2 , and i _L3 flowing through the first inductor L ₁ , the second inductor L ₂ , and the third inductor L ₃ . The horizontal axis is time, the scale is 20μs/div, the vertical axis is current, the scale is 5A/div. It can be seen from this figure that when the switch S ₁ is in the conducting state and the non-conducting state, the first inductor L ₁ , the second inductor L ₂ , and the third inductor L ₃ operate in continuous conduction mode.

Refer to the ninth figure, which is the simulated waveform of the cross voltage of the switch S _{1 and} the cross voltage of the first diode D ₁ . The horizontal axis is time, the scale is 20μs/div, the vertical axis is voltage, and the scale is 100V/div. Wherein, when the switch S ₁ is in a non-conducting state, the voltage stress of the switch S ₁ is (V _o -V _in )=176 volts, and the first diode D ₁ is in a non-conducting state, the first diode The voltage stress of the body D ₁ is 2(V _o -V _in )/3=117 volts.

Refer to the tenth figure, which is a simulated waveform of the cross pressure of the second diode D _{2 and} the cross pressure of the fourth diode D ₄ . The horizontal axis is time, the scale is 20μs/div, the vertical axis is voltage, and the scale is 100V/div. Wherein, when the second diode D ₂ is in a non-conducting state, the voltage stress of the second diode D ₂ is (V _o -V _in )/3=58 volts, and the fourth diode D ₄ In the non-conducting state, the voltage stress of the fourth diode D ₄ is 2(V _o -V _in )/3=117 volts.

Refer to Figure 11, which shows the analog waveforms of the cross voltage of the fifth diode D _{5 and} the cross voltage of the output diode D _o . The horizontal axis is time, the scale is 20μs/div, the vertical axis is voltage, and the scale is 100V/div. Wherein, when the fifth diode D ₅ is in a non-conducting state, the voltage stress of the fifth diode D ₅ is (V _o -V _in )=176 volts, and the output diode D _o is in a conducting state ; When the output diode D _o is in a non-conducting state, the voltage stress of the output diode D _o is (V _o -V _in )=176 volts, and the fifth diode D ₅ is in a conducting state. From the above analog waveform display, it is verified that the operation mode of the present invention is consistent with the aforementioned analysis.

In summary, the above embodiment has the following advantages:

1. By switching of the switch S ₁ , according to whether the first diode D ₁ to the fifth diode D ₅ are turned on, the first inductor L ₁ , the second inductor L ₂ , and the third The inductor L ₃ , the first capacitor C ₁ , the second capacitor C ₂ , and the third capacitor C ₃ are connected in parallel or in series to store or release the energy of the input voltage V _in through the output diode D _o , And the output capacitor C _o store or release energy, so that the high-power boost power conversion device of the present invention has a high-boost voltage gain when boosting, wherein the voltage gain is (4-D)/(1-D) ), D for the duty cycle of switch S _1.

2. The high-power boost power conversion device of the present invention only needs to use the switch S ₁ to achieve a high-power boost voltage gain, so it has a low-cost effect.

Based on the description of the above-mentioned embodiments, when one can fully understand the operation and use of the present invention and the effects of the present invention, the above-mentioned embodiments are only preferred embodiments of the present invention, and the implementation of the present invention cannot be limited by this. The scope, that is, simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the description of the invention, are all within the scope of the present invention.

(V _in ): Input voltage (V _o ): Output voltage (R): Load (L ₁ ): First inductor (L _1a ): First end of first inductor (L _1b ): Second end of first inductor ( L ₂ ): second inductance (L _2a ): first end of second inductance (L _2b ): second end of second inductance (L ₃ ): third inductance (L _3a ): first end of third inductance (L _3b ): the second end of the third inductor (D ₁ ): the first diode (D _1a ): the anode of the first diode (D _1b ): the cathode of the first diode (D ₂ ): the second diode Body (D _2a ): Second diode anode (D _2b ): Second diode cathode (D ₃ ): Third diode (D _3a ): Third diode anode (D _3b ): No. Triode Cathode (D ₄ ): Fourth Diode (D _4a ): Fourth Diode Anode (D _4b ): Fourth Diode Cathode (D ₅ ): Fifth Diode (D _5a ): Fifth diode anode (D _5b ): Fifth diode cathode (C ₁ ): First capacitor (C _1a ): First end of first capacitor (C _1b ): Second end of first capacitor ( C ₂ ): second capacitor (C _2a ): first end of second capacitor (C _2b ): second end of second capacitor (C ₃ ): third capacitor (C _3a ): first end of third capacitor (C _3b ): the second end of the third capacitor (S ₁ ): the switch (S _1a ): the first end of the switch (S _1b ): the second end of the switch (D _o ): the output diode (D _0a ): the output diode Body anode (D _0b ): output diode cathode (C _o ): output capacitor (C _oa ): output capacitor first end (C _ob ): output capacitor second end (1): control unit

[The first figure] is a circuit diagram illustrating a conventional step-up power conversion device.

[Second Figure] is a circuit diagram illustrating an embodiment of the high-power boost power conversion device of the present invention.

[Third Figure] is an operation timing diagram illustrating the operation timing of this embodiment.

[Fourth Figure] is a circuit diagram illustrating that this embodiment operates in a first stage.

[Fifth Figure] is a circuit diagram illustrating that this embodiment operates in a second stage.

[Figure 6] is an analog waveform diagram illustrating that the embodiment operates when an input voltage is 24V, an output voltage is 200V, and a full-load output power is 200W, the output voltage, the input voltage and a first capacitor The analog waveform of the cross pressure.

[The seventh figure] is an analog waveform diagram illustrating the analog waveform of the cross voltage of a first inductor and the gate-source signal of a switch in this embodiment.

[Eighth Figure] is a simulation waveform diagram illustrating the simulation waveforms of currents flowing through a first inductor, a second inductor, and a third inductor in this embodiment.

[Figure 9] is an analog waveform diagram illustrating the analog waveform of the cross voltage of the switch and a first diode of this embodiment.

[Figure 10] is a simulation waveform diagram illustrating the simulation waveforms of the cross voltage of a second diode and a fourth diode of this embodiment.

[Figure 11] is a simulation waveform diagram illustrating the simulation waveforms of the cross voltage of a fifth diode and an output diode of this embodiment.

(V _in ): Input voltage

(V _o ): output voltage

(R): Load

(L ₁ ): the first inductance

(L _1a ): the first end of the first inductor

(L _1b ): The second end of the first inductor

(L ₂ ): second inductance

(L _2a ): the first end of the second inductor

(L _2b ): The second end of the second inductor

(L ₃ ): third inductance

(L _3a ): the first end of the third inductor

(L _3b ): The second end of the third inductor

(D ₁ ): The first diode

(D _1a ): First diode anode

(D _1b ): First diode cathode

(D ₂ ): The second diode

(D _2a ): The second diode anode

(D _2b ): second diode cathode

(D ₃ ): The third diode

(D _3a ): The third diode anode

(D _3b ): The third diode cathode

(D ₄ ): The fourth diode

(D _4a ): Fourth diode anode

(D _4b ): Fourth diode cathode

(D ₅ ): Fifth diode

(D _5a ): The fifth diode anode

(D _5b ): Fifth diode cathode

(C ₁ ): The first capacitor

(C _1a ): The first end of the first capacitor

(C _1b ): The second end of the first capacitor

(C ₂ ): second capacitor

(C _2a ): The first end of the second capacitor

(C _2b ): The second end of the second capacitor

(C ₃ ): third capacitor

(C _3a ): The first end of the third capacitor

(C _3b ): The second end of the third capacitor

(S ₁ ): switch

(S _1a ): Switch the first end

(S _1b ): The second end of the switch

(D _o ): output diode

(D _0a ): Output diode anode

(D _0b ): Output diode cathode

(C _o ): Output capacitance

(C _oa ): the first end of the output capacitor

(C _ob ): The second end of the output capacitor

(1): Control unit

Claims (7)

A high-power boost power conversion device that receives an input voltage and converts the input voltage into an output voltage to a load, and the high-power boost power conversion device includes: A first inductor having a first inductor first end electrically connected to the positive electrode of the input voltage, and a first inductor second end; A second inductor having a first end of a second inductor and a second end of a second inductor; A third inductor having a first end of a third inductor and a second end of a third inductor; A first diode having a first diode anode electrically connected to the second end of the first inductor, and a first diode cathode electrically connected to the second end of the third inductor; A second diode having a second diode anode electrically connected to the positive electrode of the input voltage, and a second diode cathode electrically connected to the first end of the second inductor; A third diode having a third diode anode electrically connected to the second end of the second inductor, and a third diode cathode electrically connected to the second end of the third inductor; A fourth diode, having a fourth diode anode electrically connected to the positive electrode of the input voltage, and a fourth diode cathode electrically connected to the first end of the third inductor; A fifth diode, having a fifth diode anode electrically connected to the positive electrode of the input voltage, and a fifth diode cathode; A first capacitor having a first capacitor first end electrically connected to the second end of the first inductor, and a first capacitor second end electrically connected to the first end of the second inductor; A second capacitor having a first end of a second capacitor electrically connected to the second end of the second inductor, and a second end of a second capacitor electrically connected to the first end of the third inductor; A third capacitor having a first end of a third capacitor electrically connected to the second end of the third inductor, and a second end of a third capacitor electrically connected to the cathode of the fifth diode; A switch having a first end of the switch electrically connected to the cathode of the first diode, and a second end of the switch electrically connected to the negative electrode of the input voltage, and controlled to switch between a conducting state and a non-conducting state; An output diode, having an output diode anode electrically connected to the second end of the third capacitor, and an output diode cathode; and An output capacitor having a first end of an output capacitor electrically connected to the cathode of the output diode, and a second end of an output capacitor electrically connected to the second end of the switch, the cross voltage of the output capacitor is the output voltage, and the load is connected in parallel The output capacitor is used to receive the output voltage. For the high-power boost power conversion device described in item 1 of the scope of patent application, wherein when the switch is in the on state, the energy of the input voltage passes through the first diode, the second diode, and the third diode. The diode, the fourth diode, the fifth diode, and the switch are transmitted to the first inductor, the second inductor, the third inductor, the first capacitor, the second capacitor, and the first inductor Three capacitors, the first inductor, the second inductor, the third inductor, the first capacitor, the second capacitor, and the third capacitor are all connected in parallel with the input voltage and store the energy of the input voltage, and the output The capacitor releases energy to provide the output voltage to the load. When the switch is in the non-conducting state, the input voltage and the first inductor, the first capacitor, the second inductor, the second capacitor, and the third inductor, And the third capacitor are connected in series, and the stored energy is released through the output diode to provide the output capacitor and the load. For the high-power step-up power conversion device described in item 1 of the scope of patent application, wherein the voltage gain ratio of the output voltage to the input voltage is (4-D)/(1-D), where D is the switch A duty cycle between the conducting state and the non-conducting state, and D is between 0 and 1. In the high-power boost power conversion device described in item 1 of the scope of patent application, the inductance values of the first inductor, the second inductor, and the third inductor are the same. In the high-power step-up power conversion device described in claim 1, wherein the capacitance values of the first capacitor, the second capacitor, and the third capacitor are the same. The high-power boost power conversion device described in item 1 of the scope of patent application further includes a control unit that outputs a pulse wave modulation signal, and the switch receives the pulse wave modulation signal and is affected by the pulse wave modulation signal. The signal is controlled to switch between the conducting state and the non-conducting state. In the high-power boost power conversion device described in item 1 of the scope of patent application, the switch is an N-type metal oxide semiconductor field effect transistor.

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