CN114257078A - Totem-pole PFC inductive current synthesis circuit and equipment - Google Patents
Totem-pole PFC inductive current synthesis circuit and equipment Download PDFInfo
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- CN114257078A CN114257078A CN202111513938.XA CN202111513938A CN114257078A CN 114257078 A CN114257078 A CN 114257078A CN 202111513938 A CN202111513938 A CN 202111513938A CN 114257078 A CN114257078 A CN 114257078A
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- 230000001939 inductive effect Effects 0.000 title claims abstract description 42
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 33
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 33
- 238000001514 detection method Methods 0.000 claims abstract description 69
- 239000003990 capacitor Substances 0.000 claims description 36
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- 230000000630 rising effect Effects 0.000 claims description 16
- 230000002194 synthesizing effect Effects 0.000 claims description 12
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 9
- 229910002601 GaN Inorganic materials 0.000 claims description 8
- 230000005669 field effect Effects 0.000 claims description 7
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 7
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 claims description 2
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4233—Arrangements for improving power factor of AC input using a bridge converter comprising active switches
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The invention discloses a totem pole PFC inductive current synthesis circuit and equipment, comprising: the power circuit module and the control circuit module; the power circuit includes: the circuit comprises an alternating current power supply, an inductor, an input voltage signal unit and a totem-pole PFC circuit unit; the totem pole PFC circuit unit includes: the power supply comprises a first power switch, a second power switch, a third power switch, a fourth power switch, a first shunt resistor and a second shunt resistor; the control circuit module includes: the circuit comprises an input voltage detection unit, a first output voltage detection unit, a second output voltage detection unit and an inductive current synthesis unit. The invention completes the inductive current synthesis by connecting the shunt resistor in series between the power switch source electrode and the ground and measuring the voltage drop of the shunt resistor, and has the advantages of small volume and low cost.
Description
Technical Field
The invention relates to the technical field of power electronics, in particular to a totem-pole PFC inductive current synthesis circuit and equipment.
Background
For a power electronic converter powered by single-phase alternating-current voltage, an active Power Factor Correction (PFC) technology or a single-phase Active Power Filter (APF) technology is required to be adopted so as to inhibit the harmonic current on the network side and improve the power factor on the network side, and the requirements of IEC61000-3-2 and IEC6100-3-12 harmonic current inhibition labels are met. The power circuit comprises two bridge arms, generally, one is a GaN FET or IGBT bridge arm switched at high frequency, the other is a SiC FET or diode bridge arm switched at power frequency, and the control circuit comprises an analog control circuit or a digital control circuit. The totem pole PFC is an active power factor correction circuit, and like other PFC circuits, the voltage control of an output capacitor can adopt a PI controller, a transconductance type single-zero unipolar controller and the like, and the inductive current control can adopt follow-up control, single-period control, hysteresis control and the like. In either control scheme, the instantaneous value of the inductor current must be detected and compared with a reference current to determine the control error of the inner loop current. The inductive current of the totem pole PFC generally adopts a Hall current sensor and a linear isolation amplifier, needs an auxiliary power supply and has the problems of high cost and larger volume.
Disclosure of Invention
The invention provides a totem-pole PFC inductive current synthesis circuit and equipment aiming at the problems in the prior art, and aims to solve the problems of high cost and large volume in the prior art.
In order to solve the technical problems, the invention is realized by the following technical scheme:
according to a first aspect of the present invention, there is provided a totem-pole PFC inductor current synthesis circuit, comprising: the power circuit module and the control circuit module; wherein,
the power circuit module includes: the circuit comprises an alternating current power supply, an inductor, an input voltage signal unit and a totem-pole PFC circuit unit;
the totem pole PFC circuit unit includes: the power supply comprises a first power switch, a second power switch, a third power switch, a fourth power switch, a first shunt resistor and a second shunt resistor;
the live wire of the alternating current power supply is connected with the input end of the input voltage signal unit, and the live wire of the alternating current power supply is also connected with the first end of the inductor;
the source electrode of the first power switch is connected with the drain electrode of the second power switch, and a node between the source electrode of the first power switch and the drain electrode of the second power switch is connected with the second end of the inductor;
the source electrode of the third power switch is connected with the drain electrode of the fourth power switch, and a node between the source electrode of the third power switch and the drain electrode of the fourth power switch is connected with a zero line of the alternating current power supply;
the drain electrode of the first power switch is connected with the drain electrode of the third power switch;
the source electrode of the second power switch is connected with one end of the first shunt resistor, and the other end of the first shunt resistor is grounded;
the source electrode of the fourth power switch is connected with one end of the second shunt resistor, and the other end of the second shunt resistor is grounded;
the control circuit module includes: the device comprises an input voltage detection unit, a first output voltage detection unit, a second output voltage detection unit and an inductive current synthesis unit;
the output end of the input voltage signal unit is connected with the input end of the input voltage detection unit;
the input end of the first output voltage detection unit is connected with two ends of the first shunt resistor;
the input end of the second output voltage detection unit is connected with two ends of the second shunt resistor;
the output end of the input voltage detection unit, the output end of the first output voltage detection unit and the output end of the second output voltage detection unit are respectively connected with the input end of the inductive current synthesis unit, and the output end of the inductive current synthesis unit is configured to be capable of outputting synthesized inductive current.
Preferably, the inductor current synthesizing unit includes: the device comprises a polarity judgment unit, a U6, a rising current calculation unit, a multiplier, a first adder and a second adder; wherein,
the output end of the input voltage detection unit is connected with the input end of the polarity judgment unit;
the output end of the polarity judging unit is connected with the first input end of the multiplier;
the output end of the first output voltage detection unit is connected with the second input end of the multiplier;
the output end of the multiplier is connected with the first input end of the rising current calculating unit;
the node between the input voltage detection unit and the polarity judgment unit is also connected with the input end of the slope calculation unit;
the output end of the slope calculation unit is connected with the second input end of the rising current calculation unit;
the output end of the rising current calculating unit is connected with the first input end of the first adder;
the node between the multiplier and the rising current calculation unit is also connected with the second input end of the first adder;
the output end of the first adder is connected with the first input end of the second adder;
the output end of the second output voltage detection unit is connected with the second input end of the second adder;
the second adder is configured to be capable of outputting a resultant inductor current.
Preferably, the power circuit module further includes: a first capacitor;
the totem-pole PFC circuit unit further comprises: the second capacitor, the first resistance unit and the second resistance unit; wherein,
the first end of the first capacitor is connected with the first end of the inductor, and a node between the source electrode of the third power switch and the drain electrode of the fourth power switch is also connected with the second end of the first capacitor;
the node between the drain electrode of the first power switch and the drain electrode of the third power switch is connected with the first end of the first resistance unit, the second end of the first resistance unit is connected with the first end of the second resistance unit, and the second end of the second resistance unit is grounded.
Preferably, the totem-pole PFC circuit unit further includes: the first filtering unit and the second filtering unit; wherein,
the first end of the first shunt resistor is connected with the input end of the first output voltage detection unit through the first filtering unit;
and the first end of the second shunt resistor is connected with the input end of the second output voltage detection unit through the second filtering unit.
Preferably, the first filtering unit includes: a first filter resistor and a first filter capacitor; the second filtering unit includes: a second filter resistor and a second filter capacitor; wherein,
a first end of the first filter resistor is connected with a first end of the first shunt resistor, a second end of the first filter resistor is connected with a first end of the first filter capacitor, a node between the first filter resistor and the first filter capacitor is also connected with an input end of the first output voltage detection unit, and a second end of the first filter capacitor is grounded;
the first end of the second filter resistor is connected with the first end of the second shunt resistor, the second end of the second filter resistor is connected with the first end of the second filter capacitor, a node between the second filter resistor and the second filter capacitor is further connected with the input end of the second output voltage detection unit, and the second end of the second filter capacitor is grounded.
Preferably, the first resistance unit includes: a plurality of resistors connected in series in sequence; and/or the presence of a gas in the gas,
the second resistance unit includes: a plurality of resistors connected in series in sequence. The voltage resistance of a single resistor is limited, so that the voltage resistance can be enhanced by adopting a plurality of resistors connected in series, and the service life of the circuit is prolonged.
Preferably, the first power switch and the second power switch are gan field effect transistors.
Preferably, the third power meter switch and the fourth power switch are silicon carbide field effect transistors.
Preferably, the input voltage signal unit includes: the circuit comprises a first input resistor, a second input resistor, a third input resistor, a fourth input resistor, a first diode and a second diode; wherein,
the first end of the first input resistor is connected with a zero line of the alternating current power supply, the second end of the first input resistor is connected with the first end of the second input resistor, and the second end of the second input resistor is grounded;
the node between the first input resistor and the second input resistor is also connected with the first end of the first diode;
the first end of the third input resistor is connected with the live wire of the alternating current power supply, the second end of the third input resistor is connected with the first end of the fourth input resistor, and the other end of the fourth input resistor is grounded;
the node between the third input resistor and the fourth input resistor is also connected with the second end of the first diode;
the node between the second input resistor and the first diode is also connected with the first end of the second diode;
the node between the fourth input resistor and the first diode is also connected with the second end of the second diode;
the node of the second input resistor connected with the second diode is also connected with the first input end of the input voltage detection unit;
and the node of the third input resistor connected with the first diode is also connected with the second input end of the input voltage detection unit.
According to a second aspect of the present invention, there is provided a totem-pole PFC inductor current synthesis apparatus comprising: the totem-pole PFC inductive current synthesis circuit is described above.
Compared with the prior art, the invention has the following advantages:
according to the totem-pole PFC inductive current synthesis circuit and the totem-pole PFC inductive current synthesis equipment, the voltage drop of the two shunt resistors of the totem-pole PFC circuit is measured through the first output voltage detection unit and the second output voltage detection unit to complete synthesis or reconstruction of the inductive current, and the totem-pole PFC inductive current synthesis circuit and the totem-pole PFC inductive current synthesis equipment have the advantages of being small in size and low in cost.
Drawings
Embodiments of the invention are further described below with reference to the accompanying drawings:
fig. 1 is a schematic diagram of a totem-pole PC inductor current synthesizing circuit according to an embodiment of the present invention.
The reference numbers illustrate:
1-a power circuit module, the power circuit module,
2-a control circuit module;
u1-input voltage detection unit,
u2-first output voltage detection unit,
u3-second output voltage detection unit,
u4-a limit determination unit,
u5-a multiplier-the number of which,
u6-a slope calculation unit,
u7-a rising current calculation unit,
u8-a first adder, which,
u9 — second adder.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In one embodiment, a totem-pole PFC inductor current synthesis circuit is provided, comprising: please refer to fig. 1, which shows a power circuit module 1 and a control circuit module 2. Wherein, power circuit module 1 includes: AC power supply uiThe circuit comprises an inductor L1, an input voltage signal unit and a totem-pole PFC circuit unit; the totem pole PFC circuit unit includes: a first power switch S1, a second power switch S2, a third power switch S3, a fourth power switch S4, a first shunt resistor R8, and a second shunt resistor R10. AC power supply uiThe live line L is connected with the input end of the input voltage signal unit and the alternating current power supply uiIs also connected to a first terminal of an inductor L1. The source of the first power switch S1 is connected to the drain of the second power switch S2, and the node between the source of the first power switch S1 and the drain of the second power switch S2 is connected to the second terminal of the inductor L1. The source of the third power switch S3 is connected to the drain of the fourth power switch S4, and the node between the source of the third power switch S3 and the drain of the fourth power switch S4 is connected to the AC power uiThe zero line N. The drain of the first power switch S1 is connected to the drain of the third power switch S3; the source of the second power switch S2 is connected to the first terminal of the first shunt resistor R8, and the second terminal of the first shunt resistor R8 is grounded. The source of the fourth power switch S4 is connected to the first terminal of the second shunt resistor R10, and the second terminal of the second shunt resistor R10 is grounded. The control circuit module includes: an input voltage detection unit U1, a first output voltage detection unit U2, a second output voltage detection unit U3 and an inductive current synthesis unit; the input voltage detection unit U1 is connected to the output terminal of the input voltage signal unit to receive the input voltage signal Ui1(ii) a The first output voltage detection unit U2 is connected to two ends of the first shunt resistor R8 to receive the voltage of the first shunt resistor R8Signal U is droppedR1(ii) a The second output voltage detection unit U3 is connected to two ends of the second shunt resistor R10 to receive the voltage drop signal U of the second shunt resistor R10R2. The output ends of the input voltage detection unit U1, the first output voltage detection unit U2, and the second output voltage detection unit U3 are respectively connected to the input end of the inductor current synthesis unit, and the output end of the inductor current synthesis unit outputs the synthesized inductor current.
In one embodiment, the inductor current synthesizing unit includes: a polarity determination unit U4, a slope calculation unit U6, a rising current calculation unit U7, a multiplier U5, a first adder U8 and a second adder U9, please refer to fig. 1. Wherein, the output terminal of the input voltage detection unit U1 is connected with the input terminal of the polarity determination unit U4, and the input voltage detection unit U1 outputs the voltage signal Ui2(ii) a The output end of the polarity judgment unit U4 is connected with one input end of the multiplier U5, and the polarity judgment unit U4 outputs power frequency square waves; an output terminal of the first output voltage detection unit U2 is connected to another input terminal of the multiplier U5. The output end of the multiplier U5 is connected with one input end of the rising current calculating unit U7; the node between the input voltage detection unit U1 and the polarity judgment unit U4 is also connected with the input end of a slope calculation unit U6, and the slope calculation unit U6 is used for calculating Ui2/L1(ii) a An output terminal of the slope calculation unit U6 is connected to another input terminal of the rising current calculation unit U7. The output of the up-current calculation unit U7 is connected to an input of a first adder U8. The node between the multiplier U5 and the rising current calculation unit U7 is also connected to the other input of the first adder U8. The output end of the first adder U8 is connected with one input end of the second adder U9; an output terminal of the second output voltage detecting unit U3 is connected to another input terminal of the second adder U9. The output of the second adder is the resultant inductive current iL1’。
In the prior art, an input current, namely an inductive current detection circuit is adopted, so that the problems of isolation detection, linearity and response time are faced, and for the totem-pole PFC with high switching frequency, the problems of isolation, linearity and response time are the most important factors, and the cost is very high. The inductive current synthesis unit of the embodiment of the invention does not need to consider the isolation problem and has the advantages of high linearity, short response time and low cost.
In one embodiment, the power circuit module further comprises: a first capacitance C1; the totem pole PFC circuit unit further comprises: a second capacitor C2, a first resistor unit, and a second resistor unit, please refer to fig. 1. The first end of the first capacitor C1 is connected to the first end of the inductor L1, and the node between the source of the third power switch S3 and the drain of the fourth power switch S4 is further connected to the second end of the first capacitor C1. The node between the drain of the first power switch S1 and the drain of the third power switch S3 is connected to the first end of the first resistor unit, the second end of the first resistor unit is connected to the first end of the second resistor unit, and the second end of the second resistor unit is grounded.
In one embodiment, the totem-pole PFC circuit unit further includes: the first filtering unit and the second filtering unit; the first end of the first shunt resistor is connected with the input end of the first output voltage detection unit through the first filtering unit; the first end of the second shunt resistor is connected with the input end of the second output voltage detection unit through the second filtering unit.
In one embodiment, the first filtering unit includes: a first filter resistor R9 and a first filter capacitor C3; the second filtering unit includes: a second filter resistor R11 and a second filter capacitor C4, please refer to fig. 1. The first end of the first filter resistor R9 is connected to the first end of the first shunt resistor R8, the second end of the first filter resistor R9 is connected to the first end of the first filter capacitor C3, a node between the first filter resistor R9 and the first filter capacitor C3 is further connected to the input end of the first output voltage detection unit U2, and the second end of the first filter capacitor C3 is grounded. The first end of the second filter resistor R11 is connected to the first end of the second shunt resistor R10, the second end of the second filter resistor R11 is connected to the first end of the second filter capacitor C4, the node between the second filter resistor R11 and the second filter capacitor C4 is further connected to the input end of the second output voltage detection unit U3, and the second end of the second filter capacitor C4 is grounded. The first output voltage detection unit outputs UR81The second output voltage detection unit outputs a voltage UR101. The power circuit of the embodiment can realize the conversion from single-phase alternating-current voltage to direct-current voltage, the alternating-current voltage is converted into the direct-current voltage, the direct-current voltage is used for a load of a rear-stage direct-current power supply, the unit power factor of a network side is obtained, and harmonic current pollution to a power grid is avoided. In addition, compared with other similar single-phase AC-DC converters, the power circuit has the advantage of highest conversion efficiency.
In one embodiment, the first resistance unit includes: a plurality of resistors connected in series in sequence. Such as: two resistors R1, R2 may be included in series, see fig. 1. In different embodiments, more than two resistors connected in series in sequence may be included, and of course, only one resistor may be included.
In one embodiment, the second resistor unit may include only one resistor R3, please refer to fig. 1. In different embodiments, two or more resistors connected in series in sequence may be included.
In one embodiment, the first power switch S1 and the second power switch S2 are gallium nitride field effect transistors (GaN FETs). The first GaN FET and the second GaN FET form a high-speed GaN bridge arm, and the inductance current waveform can be improved.
In one embodiment, the third power switch S3 and the fourth power switch S4 are silicon carbide field effect transistors (SiC FETs). The first SiC FET and the second SiC FET form a power frequency chopping SiC bridge arm, and switching loss can be reduced.
In one embodiment, the input voltage signal unit includes: fig. 1 shows a first input resistor R4, a second input resistor R5, a third input resistor R6, a fourth input resistor R7, a first diode D1, and a second diode D2. Wherein, the first end of the first input resistor R1 is connected with an AC power source uiThe second end of the first input resistor R4 is connected to the first end of the second input resistor R5, and the second end of the second input resistor R5 is grounded. The node between the first input resistor R4 and the second input resistor R5 is also connected with the first end of the first diode; the first end of the third input resistor R6 is connected with an alternating current power supply uiThe second end of the third input resistor R6 is connected to the first end of the fourth input resistor R7, and the other end of the fourth input resistor R7 is grounded; third input powerThe node between the resistor R6 and the fourth input resistor R7 is also connected with the second end of the first diode D1 to form a common point P1; the node between the second input resistor R5 and the first diode D1 is also connected with the first end of a second diode D2 to form a common point N1, the node between the fourth input resistor R7 and the first diode D1 is also connected with the second end of a second diode D2, and the common point N1 and the common point P1 generate an input voltage signal ui1。
In one embodiment, the values of the symbols in the above embodiments are:
input voltage: 220Vac @50 Hz;
output voltage: 385V;
output power: hundreds of watts to 3.3 kW;
switching frequency: determined by hysteresis loop width, minimum 85kHz, maximum 350 kHz;
resistors R1, R2: 1M omega;
resistance R3: 25.8k Ω;
resistors R4, R6: 2x360k Ω;
resistors R5, R7: 220 omega;
shunt resistance R8, R10: 10m omega;
resistors R9, R11: 100 omega;
diodes D1 to D2: 1N 4148;
capacitance C1: 1.0 μ F;
capacitance C2: 3x 470. mu.F;
capacitance C3: 1 nF;
capacitance C4: 1 nF;
inductance L1: 250 muH;
GaN FET S1、S2：25A@85℃，650V；
SiC FET S3、S4：25A@85℃，650V。
the operating principle of the totem-pole PFC inductive current synthesis circuit of the embodiment is as follows:
(1) the second shunt resistor R10 flows through the complete inductive current of the positive half cycle, and the voltage of the second shunt resistor R10 is a negative value;
(2) the first shunt resistor R8 flows through the negative half-cycle falling inductive current, the voltage of the first shunt resistor R8 is a negative value, and therefore, the complete negative half-cycle falling inductive current needs to be synthesized;
in the negative half cycle of the network voltage, the first function unit inputs a detection value of a voltage instantaneous value, and after the detection value is divided by an inductance value L1, the slope of the rising inductive current of the negative half cycle can be obtained, and the waveform of the falling inductive current of the negative half cycle can be obtained by calculation under the condition that the falling inductive current of the negative half cycle is known, so that the complete inductive current of the negative half cycle is obtained;
(3) and obtaining the inductive current waveform of the whole period after obtaining the inductive current waveforms of the positive half cycle and the negative half cycle, and using the inductive current waveform of the whole period for subsequent inner loop current control and overcurrent protection.
In an embodiment, a totem-pole PFC inductor current synthesis device is further provided, which includes the totem-pole PFC inductor current synthesis circuit described in any of the above embodiments.
The inductive current of the existing totem-pole PFC generally adopts a Hall current sensor and a linear isolation amplifier, needs an auxiliary power supply and has the problems of high cost and larger volume. The totem-pole PFC inductive current synthesis in the embodiment of the invention adopts a method of serially connecting shunt resistors (R8, R10) between the source electrodes of two lower tube field effect transistors and the ground, and synthesizes or reconstructs the inductive current by measuring the voltage of the shunt resistors.
In the description herein, reference to the terms "an implementation," "an embodiment," "a specific implementation," "an example" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, and not to limit the invention. Any modifications and variations within the scope of the description, which may occur to those skilled in the art, are intended to be within the scope of the invention.
Claims (10)
1. A totem-pole PFC inductive current synthesis circuit is characterized by comprising: the power circuit module and the control circuit module; wherein,
the power circuit module includes: the circuit comprises an alternating current power supply, an inductor, an input voltage signal unit and a totem-pole PFC circuit unit;
the totem pole PFC circuit unit includes: the power supply comprises a first power switch, a second power switch, a third power switch, a fourth power switch, a first shunt resistor and a second shunt resistor;
the live wire of the alternating current power supply is connected with the input end of the input voltage signal unit, and the live wire of the alternating current power supply is also connected with the first end of the inductor;
the source electrode of the first power switch is connected with the drain electrode of the second power switch, and a node between the source electrode of the first power switch and the drain electrode of the second power switch is connected with the second end of the inductor;
the source electrode of the third power switch is connected with the drain electrode of the fourth power switch, and a node between the source electrode of the third power switch and the drain electrode of the fourth power switch is connected with a zero line of the alternating current power supply;
the drain electrode of the first power switch is connected with the drain electrode of the third power switch;
the source electrode of the second power switch is connected with the first end of the first shunt resistor, and the second end of the first shunt resistor is grounded;
the source electrode of the fourth power switch is connected with the first end of the second shunt resistor, and the second end of the second shunt resistor is grounded;
the control circuit module includes: the device comprises an input voltage detection unit, a first output voltage detection unit, a second output voltage detection unit and an inductive current synthesis unit;
the output end of the input voltage signal unit is connected with the input end of the input voltage detection unit;
the input end of the first output voltage detection unit is connected with two ends of the first shunt resistor;
the input end of the second output voltage detection unit is connected with two ends of the second shunt resistor;
the output end of the input voltage detection unit, the output end of the first output voltage detection unit and the output end of the second output voltage detection unit are respectively connected with the input end of the inductive current synthesis unit, and the output end of the inductive current synthesis unit is configured to be capable of outputting synthesized inductive current.
2. The totem-pole PFC inductor current synthesizing circuit of claim 1, wherein the inductor current synthesizing unit comprises: the device comprises a polarity judgment unit, a slope calculation unit, a rising current calculation unit, a multiplier, a first adder and a second adder; wherein,
the output end of the input voltage detection unit is connected with the input end of the polarity judgment unit;
the output end of the polarity judging unit is connected with the first input end of the multiplier;
the output end of the first output voltage detection unit is connected with the second input end of the multiplier;
the output end of the multiplier is connected with the first input end of the rising current calculating unit;
the node between the input voltage detection unit and the polarity judgment unit is also connected with the input end of the slope calculation unit;
the output end of the slope calculation unit is connected with the second input end of the rising current calculation unit;
the output end of the rising current calculating unit is connected with the first input end of the first adder;
the node between the multiplier and the rising current calculation unit is also connected with the second input end of the first adder;
the output end of the first adder is connected with the first input end of the second adder;
the output end of the second output voltage detection unit is connected with the second input end of the second adder;
the second adder is configured to be capable of outputting a resultant inductor current.
3. The totem-pole PFC inductor current synthesizing circuit of claim 2, wherein the power circuit module further comprises: a first capacitor;
the totem-pole PFC circuit unit further comprises: the second capacitor, the first resistance unit and the second resistance unit; wherein,
the first end of the first capacitor is connected with the first end of the inductor, and a node between the source electrode of the third power switch and the drain electrode of the fourth power switch is also connected with the second end of the first capacitor;
the node between the drain electrode of the first power switch and the drain electrode of the third power switch is connected with the first end of the first resistance unit, the second end of the first resistance unit is connected with the first end of the second resistance unit, and the second end of the second resistance unit is grounded.
4. The totem-pole PFC inductor current synthesizing circuit of claim 3, wherein the totem-pole PFC circuit unit further comprises: the first filtering unit and the second filtering unit; wherein,
the first end of the first shunt resistor is connected with the input end of the first output voltage detection unit through the first filtering unit;
and the first end of the second shunt resistor is connected with the input end of the second output voltage detection unit through the second filtering unit.
5. The totem-pole PFC inductor current synthesis circuit of claim 4, wherein the first filtering unit comprises: a first filter resistor and a first filter capacitor; the second filtering unit includes: a second filter resistor and a second filter capacitor; wherein,
a first end of the first filter resistor is connected with a first end of the first shunt resistor, a second end of the first filter resistor is connected with a first end of the first filter capacitor, a node between the first filter resistor and the first filter capacitor is also connected with an input end of the first output voltage detection unit, and a second end of the first filter capacitor is grounded;
the first end of the second filter resistor is connected with the first end of the second shunt resistor, the second end of the second filter resistor is connected with the first end of the second filter capacitor, a node between the second filter resistor and the second filter capacitor is further connected with the input end of the second output voltage detection unit, and the second end of the second filter capacitor is grounded.
6. The totem-pole PFC inductor current synthesizing circuit of claim 3, wherein the first resistance unit comprises: a plurality of resistors connected in series in sequence; and/or the presence of a gas in the gas,
the second resistance unit includes: a plurality of resistors connected in series in sequence.
7. The totem-pole PFC inductor current synthesizing circuit of any one of claims 1 to 6, wherein the first power switch and the second power switch are gallium nitride field effect transistors.
8. The totem-pole PFC inductor current synthesizing circuit of claim 7, wherein the third power meter switch and the fourth power switch are silicon carbide field effect transistors.
9. The totem-pole PFC inductor current synthesis circuit of any one of claims 1 to 6, wherein the input voltage signal unit comprises: the circuit comprises a first input resistor, a second input resistor, a third input resistor, a fourth input resistor, a first diode and a second diode; wherein,
the first end of the first input resistor is connected with a zero line of the alternating current power supply, the second end of the first input resistor is connected with the first end of the second input resistor, and the second end of the second input resistor is grounded;
the node between the first input resistor and the second input resistor is also connected with the first end of the first diode;
the first end of the third input resistor is connected with the live wire of the alternating current power supply, the second end of the third input resistor is connected with the first end of the fourth input resistor, and the other end of the fourth input resistor is grounded;
the node between the third input resistor and the fourth input resistor is also connected with the second end of the first diode;
the node between the second input resistor and the first diode is also connected with the first end of the second diode;
the node between the fourth input resistor and the first diode is also connected with the second end of the second diode;
the node of the second input resistor connected with the second diode is also connected with the first input end of the input voltage detection unit;
and the node of the third input resistor connected with the first diode is also connected with the second input end of the input voltage detection unit.
10. A totem-pole PFC inductor current synthesizing device, comprising: the totem-pole PFC inductor current synthesizing circuit as claimed in any one of claims 1 to 9.
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