CN102629834A - High-power-factor soft-switching three-phase power-regulating power supply - Google Patents
High-power-factor soft-switching three-phase power-regulating power supply Download PDFInfo
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Abstract
The invention relates to a high-power-factor soft-switching three-phase power-regulating power supply which comprises an AB-phase high-frequency filter circuit. The AB-phase high-frequency filter circuit is connected with an AB-phase high-frequency rectifier circuit via an AB-phase rectifier circuit, an AB-phase inverter circuit and an AB-phase resonance circuit; a BC-phase high-frequency filter circuit is connected with a BC-phase high-frequency rectifier circuit via a BC-phase rectifier circuit, a BC-phase inverter circuit and a BC-phase resonance circuit; a CA-phase high-frequency filter circuit is connected with a CA-phase high-frequency rectifier circuit via a CA-phase rectifier circuit, a CA-phase inverter circuit and a CA-phase resonance circuit; a control circuit is connected with the output end of an output voltage and current detection circuit, an inverter current detection circuit and a power setting signal; and the control circuit is connected with the control ends of the AB-phase inverter circuit, the BC-phase inverter circuit and the CA-phase inverter circuit via the output end of a drive circuit. The high-power-factor soft-switching three-phase power-regulating power supply has high power factor, an inverter bridge adopts the load resonant moving power control soft-switching technology, so that the switching loss is reduced, the overall efficiency is increased, and the power supply is safe and reliable.
Description
Technical field
The present invention relates to a kind of three-phase Power Regulation power supply, the soft switch three-phase of especially a kind of High Power Factor Power Regulation power supply belongs to the technical field of Power Regulation power supply.
Background technology
Traditional three-phase Power Regulation power supply is claimed thyristor electric power adjuster again; Be mainly used in the heating power adjustment of various electric heater units (like the electric heater unit of electrothermic industry kiln, electric air drier, electrothermal oil stove, various retort, agitated reactor), realize control heating-up temperature.
The three-phase power regulating eqiupment is widely used in following field:
A, electric furnace industry: annealing furnace, drying oven, glowing furnace, sintering furnace, crucible furnace, continuous tunnel furnace, smelting furnace; Cabinet-type electric furnace, well-type electric furnace, smelting electrical furnace, rolling electric furnace, vacuum electric furnace, chassis electric furnace, quenching electric furnace; The timeliness electric furnace, bell-type electric furnace, atmosphere electric furnace, baking oven, experimental electric furnace, heat treatment; Resistance furnace, vacuum furnace, meshbeltfurnace, high temperature furnace, kiln, electric furnace;
B, plant equipment: package packing machine, injection machine, pyrocondensation machinery, extrusion machinery, food machinery, tempering equipment, plastic processing, infrared heating;
C, glass industry: glass fiber, glass ware forming, glass melts, and glass is printed, floatation glass production line, anneal slot;
D, auto industry: spraying oven dry, thermoforming;
E, energy-saving illumination: tunnel illumination, street lighting, photo illumination, light of stage;
F, chemical industry: distillation evaporation, pre-heating system, pipeline heating, petrochemical industry, temperature-compensating;
G, other industry: salt bath furnace, power frequency induction furnace, glowing furnace temperature control, heat-treatment furnace temperature control, diamond press heating; High-power magnetizing/demagnetizing apparatus, airplane power source pressure regulation, the temperature control of central air-conditioning electric heater, textile machine; Rock quartz is produced, powder metallurgy machinery, color picture tube, production equipment; Metallurgical machinery equipment, Petro-Chemical Machinery, the stepless smooth adjustment of light, fields such as the permanent power control of constant pressure and flow.
Mainly there is following problem in traditional three-phase Power Regulation power supply: power factor is low; Output low-order harmonic content is big, and the utilization ratio of power supply is not high; The mains by harmonics electric current is seriously polluted, and dynamic responding speed is slow, can't tackle the situation of load changing, and there is inductance in the electric heating load, has reactive loss.
Full control inversion voltage controller power source can be good at solving the harmonic pollution problem, but the switching tube major part is operated in the hard switching state, to the requirement of switching device than higher; Increase cost; The more important thing is has increased switching loss, has reduced power-efficient, particularly when power increases; It is more obvious that the defective of this respect highlights, and limited the high frequency development of power supply.Because the existence of power electronic device and non-linear element makes to produce a large amount of current harmonicss in the Power Operating Process, cause the power supply input power factor to reduce in addition, power grid environment is caused serious pollution.Power Regulation power supply for low pressure output needs the Industrial Frequency Transformer step-down, and the Industrial Frequency Transformer volume is big, and cost is high, the development trend of incompatible current voltage regulator High Power Factor, high efficiency, miniaturization.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the prior art; The soft switch three-phase of a kind of High Power Factor Power Regulation power supply is provided, and its circuit structure is simple, and input power factor is high; Inverter bridge adopts load resonant to shift to power control soft switch technique; Reduce switching loss, improve overall efficiency, safe and reliable.
According to technical scheme provided by the invention; The soft switch three-phase of said High Power Factor Power Regulation power supply, comprise with electrical network in AB high-frequency filter circuit, BC phase high-frequency filter circuit and the CA phase high-frequency filter circuit mutually of A single phase poaer supply, B single phase poaer supply and the corresponding connection of C single phase poaer supply;
Said AB phase high-frequency filter circuit links to each other with AB commutating phase circuit; Inverter circuit is continuous mutually with AB for the output of AB commutating phase circuit; The output of AB phase inverter circuit links to each other with AB phase resonance circuit, and AB phase resonance circuit is through AB phase high-frequency rectification circuit output A phase direct current half-sinusoid voltage U a0;
Said BC phase high-frequency filter circuit links to each other with BC commutating phase circuit; Inverter circuit is continuous mutually with BC for the output of BC commutating phase circuit; The output of BC phase inverter circuit links to each other with BC phase resonance circuit, and BC phase resonance circuit is through BC phase high-frequency rectification circuit output B phase direct current half-sinusoid voltage U b0;
Said CA phase high-frequency filter circuit links to each other with CA commutating phase circuit; Inverter circuit is continuous mutually with CA for the output of CA commutating phase circuit; Said CA phase inverter circuit links to each other with CA phase resonance circuit, and CA phase resonance circuit is through CA phase high-frequency rectification circuit output C phase direct current half-sinusoid voltage U c0;
The output of AB phase high-frequency rectification circuit, BC phase high-frequency rectification circuit and CA phase high-frequency rectification circuit all links to each other with the output voltage current detection circuit that is used to detect output voltage and output current signal; The output of said output voltage current detection circuit links to each other with control circuit; Said control circuit links to each other with the inverter current testing circuit output that is used to detect the inverter circuit output current; Said inverter current testing circuit and AB be corresponding the linking to each other of output of inverter circuit, BC phase inverter circuit and CA phase inverter circuit mutually, and control circuit also receives the level demand signal of outside input; The output of said control circuit links to each other with drive circuit, and the output of said drive circuit and the AB control end of inverter circuit, BC phase inverter circuit and CA phase inverter circuit mutually link to each other;
The detection A phase direct current half-sinusoid voltage U a0 that said output voltage current circuit obtains detection, A phase direct current half-sinusoid current i a0, B phase direct current half-sinusoid voltage U b0, B phase direct current half-sinusoid current i b0, C phase direct current half-sinusoid voltage U c0 and C phase direct current half-wave current ic0 correspondent transform are handled back input power feedback signal in control circuit, and control circuit forms power control signal according to the level demand signal of power feedback signal and reception; Inverter current detects handles back incoming frequency tracking signal in control circuit with the AB phase inverter current ia2 that detects, BC phase inverter current ib2 and CA phase inverter current ic2 correspondent transform, and control circuit is followed the tracks of the shift power control signal to the drive circuit output frequency after to said frequency-tracking signal and power control signal calculation process;
Drive circuit is according to frequency-tracking shift power control signal output corresponding driving pulse signal; To regulate the conducting state of AB phase inverter circuit, BC phase inverter circuit and CA phase inverter circuit respectively through the corresponding driving pulse signal, so that the high-frequency ac pulse voltage of AB phase inverter circuit, BC phase inverter circuit and CA phase inverter circuit output corresponding pulses width; AB phase inverter circuit, BC phase inverter circuit and CA phase inverter circuit are exported corresponding high-frequency ac pulse voltage and AB phase resonance circuit, BC phase resonance circuit and CA phase resonance circuit corresponding matching; And obtain A phase direct current half-sinusoid voltage U a0, B phase direct current half-sinusoid voltage U b0 and C phase direct current half-sinusoid voltage U c0 behind process AB phase high-frequency rectification circuit, BC phase high-frequency rectification circuit and the CA phase high-frequency rectification circuit respectively, and the corresponding phase place of A phase direct current half-sinusoid current i a0, B phase direct current half-sinusoid current i b0 and C phase direct current half-sinusoid current i c0 is consistent with A single phase poaer supply, B single phase poaer supply and the corresponding phase place of C single phase poaer supply respectively.
Said AB phase resonance circuit links to each other through AB phase transformer power matching circuit between high-frequency rectification circuit with AB mutually; High-frequency rectification circuit is continuous through BC phase transformer power matching circuit mutually with BC for BC phase resonance circuit, and high-frequency rectification circuit is continuous through CA phase transformer power matching circuit mutually with CA for CA phase resonance circuit.
Said inverter current testing circuit comprises an AB phase output current transducer, a BC phase output current transducer and a CA phase output current transducer; The output of a said AB phase output current transducer links to each other with AB phase current/voltage conversion circuit; The output of the one BC phase output current transducer links to each other with BC phase current/voltage conversion circuit, and the output of a CA phase output current transducer links to each other with CA phase current/voltage conversion circuit; The output negative pole end of AB phase current/voltage conversion circuit links to each other with the output cathode end of BC phase current/voltage conversion circuit; The output negative pole end of BC phase current/voltage conversion circuit links to each other with the output cathode end of CA phase current/voltage conversion circuit; The output cathode end of AB phase current/voltage conversion circuit and the output negative pole end of CA phase current/voltage conversion circuit all with control circuit in shaping pulse zero passage comparison circuit link to each other; The output of said shaping pulse zero passage comparison circuit links to each other with the phase-locked loop frequency tracking circuit, and the output of said phase-locked loop frequency tracking circuit links to each other with phase-shift control circuit;
Said output voltage current detection circuit comprises AB phase output voltage sensor, BC phase output voltage sensor, CA phase output voltage sensor, the 2nd AB phase output current transducer, the 2nd BC phase output current transducer and the 2nd CA phase output current transducer; The output of said AB phase output voltage sensor, BC phase output voltage sensor and CA phase output voltage sensor all links to each other with first adder; The output of the 2nd AB phase output current transducer, the 2nd BC phase output current transducer and the 2nd CA phase output current transducer all links to each other with second adder; First adder links to each other with mlultiplying circuit with the output of second adder, to pass through mlultiplying circuit power output feedback signal Ur;
The power feedback signal Ur of said mlultiplying circuit output compares with level demand signal through the comparator in the control circuit; The output of said comparator links to each other with pi regulator; Said pi regulator links to each other with the shift power control circuit; Said shift power control circuit links to each other with pulse distributor; AB in said pulse distributor and drive circuit inverter bridge drive circuit, BC phase inverter bridge drive circuit and CA phase inverter bridge drive circuit mutually links to each other; AB phase inverter bridge drive circuit, BC phase inverter bridge drive circuit and CA phase inverter bridge drive circuit respectively with AB mutually the control end of inverter circuit, BC phase inverter circuit and CA phase inverter circuit link to each other so that the high-frequency ac pulse voltage of AB phase inverter circuit, BC phase inverter circuit and CA phase inverter circuit output corresponding pulses width.
Said AB phase high-frequency filter circuit comprises the first input filter inductance and first filter capacitor, and said AB commutating phase circuit comprises first single-phase rectification bridge; The two ends of said first filter capacitor link to each other with first input end, second input of first single-phase rectification bridge respectively; The first input end of first single-phase rectification bridge also links to each other with the A single phase poaer supply through the first input filter inductance, and second input of first single-phase rectification bridge links to each other with the B single phase poaer supply;
First output of first single-phase rectification bridge and the AB drain electrode end of first switching tube in the inverter circuit and the drain electrode end of the 3rd switching tube mutually link to each other, and second output of first single-phase rectification bridge links to each other with the source terminal of the source terminal of second switch pipe and the 4th switching tube; The drain electrode end of first switching tube links to each other through the first high frequency absorption electric capacity with the source terminal of second switch pipe, and the drain electrode end of the 3rd switching tube links to each other through the second high frequency absorption electric capacity with the source terminal of the 4th switching tube; The source terminal of first switching tube links to each other with the anode tap of first diode, the drain electrode end of second switch pipe and the cathode terminal of second diode; The cathode terminal of first diode links to each other with the drain electrode end of first switching tube; The anode tap of second diode links to each other with the source terminal of second switch pipe, and the cathode terminal of second diode links to each other with the drain electrode end of second switch pipe; The source terminal of the 3rd switching tube links to each other with the anode tap of the 3rd diode, the drain electrode end of the 4th switching tube and the cathode terminal of the 4th diode; The cathode terminal of the 3rd diode links to each other with the drain electrode end of the 3rd switching tube; The anode tap of the 4th diode links to each other with the source terminal of the 4th switching tube; The cathode terminal of the 4th diode links to each other with the drain electrode end of the 4th switching tube, and first switching tube, second switch pipe, the 3rd switching tube and the 4th control end of switching tube link to each other with the output of drive circuit; The two ends of first diode are parallel with first junction capacitance, and the two ends of second diode are parallel with second junction capacitance, and the two ends of the 3rd diode are parallel with the 3rd junction capacitance, and the two ends of the 4th diode are parallel with the 4th junction capacitance;
The anode tap of the source terminal of the 3rd switching tube and the 3rd diode links to each other with an end of first resonant inductance in the AB phase resonance circuit; High-frequency rectification circuit is continuous mutually with AB for the other end of first resonant inductance, and AB phase high-frequency rectification circuit links to each other with the source terminal of first switching tube and the drain electrode end of second switch pipe through first resonant capacitance and the AB phase output current transducer in the AB phase resonance circuit.
Said AB phase high-frequency circuit comprises the 5th diode, the 6th diode, the 7th diode and the 8th diode; The anode tap of the 5th diode links to each other with the cathode terminal of the 6th diode; The anode tap of the 6th diode links to each other with the anode tap of the 8th diode; The cathode terminal of the 8th diode links to each other with the anode tap of the 7th diode, and the cathode terminal of the cathode terminal of the 7th diode and the 5th diode interconnects; The cathode terminal of the anode tap of the 5th diode and the 6th diode links to each other with first resonant inductance, and the cathode terminal of the anode tap of the 7th diode and the 8th diode links to each other with first resonant capacitance.
When said AB phase resonance circuit and AB link to each other through AB phase transformer power matching circuit between high-frequency rectification circuit mutually; Said AB phase transformer power matching circuit comprises first high frequency transformer; The two ends of the first side winding of said first high frequency transformer link to each other with first resonant inductance and first resonant capacitance respectively; The anode tap of the 9th diode in the high-frequency rectification circuit and the anode tap of the tenth diode link to each other mutually with AB respectively at the two ends of the secondary side winding of first high frequency transformer; The cathode terminal of the cathode terminal of the tenth diode and the 9th diode interconnects, and the output current transducer is continuous mutually with the 2nd AB for the cathode terminal of the 9th diode; The centre cap of the first high frequency transformer secondary side winding is exported A direct current half-sinusoid voltage U a0 mutually with the cathode terminal of the 9th diode.
Said BC high-frequency filter circuit comprises the second input filter inductance and second filter capacitor; Said BC commutating phase circuit comprises second single-phase rectification bridge, and the two ends of said second filter capacitor link to each other with first input end, second input of second single-phase rectification bridge respectively; The first input end of second single-phase rectification bridge also links to each other with the B single phase poaer supply through the second input filter inductance, and second input of second single-phase rectification bridge links to each other with the C single phase poaer supply;
First output of second single-phase rectification bridge and the BC drain electrode end of the 5th switching tube in the inverter circuit and the drain electrode end of the 7th switching tube mutually link to each other, and second output of second single-phase rectification bridge links to each other with the source terminal of the source terminal of the 6th switching tube and the 8th switching tube; The drain electrode end of the 5th switching tube links to each other through the 3rd high frequency absorption electric capacity with the source terminal of the 6th switching tube, and the drain electrode end of the 7th switching tube links to each other through the 4th high frequency absorption electric capacity with the source terminal of the 8th switching tube; The source terminal of the 5th switching tube links to each other with the drain electrode end of the anode tap of the 11 diode, the 6th switching tube and the cathode terminal of the 12 diode; The cathode terminal of the 11 diode links to each other with the drain electrode end of the 5th switching tube; The anode tap of the 12 diode links to each other with the source terminal of the 6th switching tube, and the cathode terminal of the 12 diode links to each other with the drain electrode end of the 6th switching tube; The source terminal of the 7th switching tube links to each other with the drain electrode end of the anode tap of the 13 diode, the 8th switching tube and the cathode terminal of the 14 diode; The cathode terminal of the 13 diode links to each other with the drain electrode end of the 7th switching tube; The anode tap of the 14 diode links to each other with the source terminal of the 8th switching tube; The cathode terminal of the 14 diode links to each other with the drain electrode end of the 8th switching tube, and the control end of the 5th switching tube, the 6th switching tube, the 7th switching tube and the 8th switching tube links to each other with the output of drive circuit; The two ends of said the 11 diode are parallel with the 5th junction capacitance, and the two ends of the 12 diode are parallel with the 6th junction capacitance, and the two ends of the 13 diode are parallel with the 7th junction capacitance, and the two ends of the 14 diode are parallel with the 8th junction capacitance;
The source terminal of the 7th switching tube and the anode tap of the 13 diode link to each other with an end of second resonant inductance in the BC phase resonance circuit; High-frequency rectification circuit is continuous mutually with BC for the other end of second resonant inductance, and BC phase high-frequency rectification circuit links to each other with the source terminal of the 5th switching tube and the drain electrode end of the 6th switching tube through second resonant capacitance and the BC phase output current transducer in the BC phase resonance circuit.
Said BC phase resonance circuit links to each other through BC phase transformer power matching circuit between high-frequency rectification circuit with BC mutually; Said BC phase transformer power matching circuit comprises second high frequency transformer; The two ends of the first side winding of said second high frequency transformer link to each other with second resonant inductance and second resonant capacitance respectively; The two ends of the secondary side winding of second high frequency transformer respectively with BC mutually the anode tap of the 19 diode in the high-frequency rectification circuit and the anode tap of the 20 diode link to each other, the cathode terminal of the 20 diode and the cathode terminal of the 19 diode interconnect; The output current transducer is continuous mutually with the 2nd BC for the cathode terminal of the 19 diode, and the centre cap of the second high frequency transformer secondary side winding is exported B direct current half-sinusoid voltage U b0 mutually with the cathode terminal of the 19 diode.
Said CA phase High frequency filter comprises the 3rd input filter inductance and the 3rd filter capacitor, and CA commutating phase circuit comprises the 3rd single-phase rectification bridge, and the two ends of said the 3rd filter capacitor link to each other with first input end, second input of the 3rd single-phase rectification bridge respectively; The first input end of the 3rd single-phase rectification bridge also links to each other with the C single phase poaer supply through the 3rd input filter inductance, and second input of the 3rd single-phase rectification bridge links to each other with the A single phase poaer supply;
First output of the 3rd single-phase rectification bridge and the CA drain electrode end of the 9th switching tube in the inverter circuit and the drain electrode end of the 11 switching tube mutually link to each other, and second output of the 3rd single-phase rectification bridge links to each other with the source terminal that the source terminal of the tenth switching tube and twelvemo are closed pipe; The drain electrode end of the 9th switching tube links to each other through the 5th high frequency absorption electric capacity with the source terminal of the tenth switching tube, and the drain electrode end of the 11 switching tube links to each other through the 6th high frequency absorption electric capacity with the source terminal that twelvemo is closed pipe; The source terminal of the 9th switching tube links to each other with the drain electrode end of the anode tap of the 21 diode, the tenth switching tube and the cathode terminal of the 22 diode; The cathode terminal of the 21 diode links to each other with the drain electrode end of the 9th switching tube; The anode tap of the 22 diode links to each other with the source terminal of the tenth switching tube, and the cathode terminal of the 22 diode links to each other with the drain electrode end of the tenth switching tube; The source terminal of the 11 switching tube closes the drain electrode end of pipe with the anode tap of the 23 diode, twelvemo and the cathode terminal of the 24 diode links to each other; The cathode terminal of the 23 diode links to each other with the drain electrode end of the 11 switching tube; The anode tap of the 24 diode links to each other with the source terminal that twelvemo is closed pipe; The cathode terminal of the 24 diode links to each other with the drain electrode end that twelvemo is closed pipe, and the control end that the 9th switching tube, the tenth switching tube, the 7th switching tube and twelvemo are closed pipe links to each other with the output of drive circuit; The two ends of the 21 diode are parallel with the 9th junction capacitance, and the two ends of the 22 diode are parallel with the tenth junction capacitance, and the two ends of the 23 diode are parallel with the 11 junction capacitance, and the two ends of the 24 diode are parallel with the 12 junction capacitance;
The source terminal of the 11 switching tube and the anode tap of the 23 diode link to each other with an end of the 3rd resonant inductance in the CA phase resonance circuit; High-frequency rectification circuit is continuous mutually with CA for the other end of the 3rd resonant inductance, and CA phase high-frequency rectification circuit links to each other with the source terminal of the 9th switching tube and the drain electrode end of the tenth switching tube through the 3rd resonant capacitance and the CA phase output current transducer in the CA phase resonance circuit.
Said CA phase resonance circuit links to each other through CA phase transformer power matching circuit between high-frequency rectification circuit with CA mutually; Said CA phase transformer power matching circuit comprises the 3rd high frequency transformer; The two ends of the first side winding of said the 3rd high frequency transformer link to each other with the 3rd resonant inductance and the 3rd resonant capacitance respectively; The two ends of the secondary side winding of the 3rd high frequency transformer respectively with CA mutually the anode tap of the 29 diode in the high-frequency rectification circuit and the anode tap of the 30 utmost point pipe link to each other, the cathode terminal of the 30 utmost point pipe and the cathode terminal of the 29 diode interconnect; The output current transducer is continuous mutually with the 2nd CA for the cathode terminal of the 29 diode, and the centre cap of the 3rd high frequency transformer secondary side winding is exported C direct current half-sinusoid voltage U c0 mutually with the cathode terminal of the 29 diode.
Advantage of the present invention: utilize the input of phase line voltage; After to the phase line voltage commutation, link to each other with inverter circuit, resonant circuit and high-frequency rectification circuit; Between phase line voltage commutation and inverter circuit, need not be connected, improve the input power factor of three phase network through big filter capacitor; Control circuit is according to the set value of the power and the drive circuit corresponding matching of outside input; Make the high-frequency pulse voltage that the inverter circuit output pulse width is adjustable; Output direct current half-sinusoid voltage behind said high-frequency pulse voltage and resonant circuit corresponding matching and the process high-frequency rectification; And the phase place of said direct current half-sinusoid voltage and the phase place of single-phase input line voltage are consistent; Make whole three-phase Power Regulation power supply with respect to three phase network, be the resistance load, output power factor is 1 for three phase network, improves the delivery efficiency of three phase network; Circuit structure is simple, and input power factor is high, and inverter bridge adopts load resonant shift power control soft switch technique, reduces switching loss, improves overall efficiency, and is safe and reliable.
Description of drawings
Fig. 1 is the soft switch three-phase of a High Power Factor of the present invention Power Regulation power supply architecture block diagram.
Fig. 2 is the soft switch three-phase of a High Power Factor of the present invention Power Regulation electric power main circuit schematic diagram.
When Fig. 3 did not add transformer for the present invention, AB phase high-frequency rectification circuit adopted full-bridge diode rectification schematic diagram.
When Fig. 4 did not add transformer for the present invention, AB phase high-frequency rectification circuit adopted full-bridge diode rectification schematic diagram.
When Fig. 5 did not add transformer for the present invention, AB phase high-frequency rectification circuit adopted full-bridge diode rectification schematic diagram.
Fig. 6 is the equivalent schematic diagram of inverter circuit of the present invention, resonant circuit, high-frequency rectification circuit.
Fig. 7 is the fundamental diagram that the present invention is directed to the equivalent schematic diagram of Fig. 6.
Fig. 8 is the structured flowchart that output voltage current detection circuit of the present invention, inverter current testing circuit, control circuit and drive circuit cooperate.
Fig. 9 during for phase shifting angle of the present invention zero AB import the each point waveform of power-frequency voltage half period translation circuit mutually.
Figure 10 during for 90 ° of phase shifting angles of the present invention AB import the each point waveform of power-frequency voltage half period translation circuit mutually.
Figure 11 during for phase shifting angle of the present invention zero AB import the each point waveform of power-frequency voltage one-period translation circuit mutually.
Embodiment
Below in conjunction with concrete accompanying drawing and embodiment the present invention is described further.
As shown in Figure 1: in order to improve input power factor; Reduce the complexity of Power Regulation power supply, the present invention includes with electrical network in AB high-frequency filter circuit, BC phase high-frequency filter circuit and the CA phase high-frequency filter circuit mutually of A single phase poaer supply Ua, B single phase poaer supply Ub and the corresponding connection of C single phase poaer supply Uc; It is characterized in that:
Said AB phase high-frequency filter circuit links to each other with AB commutating phase circuit; Inverter circuit is continuous mutually with AB for the output of AB commutating phase circuit; The output of AB phase inverter circuit links to each other with AB phase resonance circuit, and AB phase resonance circuit is through AB phase high-frequency rectification circuit output A phase direct current half-sinusoid voltage U a0;
Said BC phase high-frequency filter circuit links to each other with BC commutating phase circuit; Inverter circuit is continuous mutually with BC for the output of BC commutating phase circuit; The output of BC phase inverter circuit links to each other with BC phase resonance circuit, and BC phase resonance circuit is through BC phase high-frequency rectification circuit output B phase direct current half-sinusoid voltage U b0;
Said CA phase high-frequency filter circuit links to each other with CA commutating phase circuit; Inverter circuit is continuous mutually with CA for the output of CA commutating phase circuit; Said CA phase inverter circuit links to each other with CA phase resonance circuit, and CA phase resonance circuit is through CA phase high-frequency rectification circuit output C phase direct current half-sinusoid voltage U c0;
The output of AB phase high-frequency rectification circuit, BC phase high-frequency rectification circuit and CA phase high-frequency rectification circuit all links to each other with the output voltage current detection circuit that is used to detect output voltage and output current signal; The output of said output voltage current detection circuit links to each other with control circuit; Said control circuit links to each other with the inverter current testing circuit output that is used to detect the inverter circuit output current; Said inverter current testing circuit and AB be corresponding the linking to each other of output of inverter circuit, BC phase inverter circuit and CA phase inverter circuit mutually, and control circuit also receives the level demand signal of outside input; The output of said control circuit links to each other with drive circuit, and the output of said drive circuit and the AB control end of inverter circuit, BC phase inverter circuit and CA phase inverter circuit mutually link to each other;
The detection A phase direct current half-sinusoid voltage U a0 that said output voltage current circuit obtains detection, A phase direct current half-sinusoid current i a0, B phase direct current half-sinusoid voltage U b0, B phase direct current half-sinusoid current i b0, C phase direct current half-sinusoid voltage U c0 and C phase direct current half-wave current ic0 correspondent transform are handled back input power feedback signal in control circuit, and control circuit forms power control signal according to the level demand signal of power feedback signal and reception; Inverter current detects handles back incoming frequency tracking signal in control circuit with the AB phase inverter current ia2 that detects, BC phase inverter current ib2 and CA phase inverter current ic2 correspondent transform, and control circuit is followed the tracks of the shift power control signal to the drive circuit output frequency after to said frequency-tracking signal and power control signal calculation process;
Drive circuit is according to frequency-tracking shift power control signal output corresponding driving pulse signal; To regulate the conducting state of AB phase inverter circuit, BC phase inverter circuit and CA phase inverter circuit respectively through the corresponding driving pulse signal, so that the high-frequency ac pulse voltage of AB phase inverter circuit, BC phase inverter circuit and CA phase inverter circuit output corresponding pulses width; AB phase inverter circuit, BC phase inverter circuit and CA phase inverter circuit are exported corresponding high-frequency ac pulse voltage and AB phase resonance circuit, BC phase resonance circuit and CA phase resonance circuit corresponding matching; And obtain A phase direct current half-sinusoid voltage U a0, B phase direct current half-sinusoid voltage U b0 and C phase direct current half-sinusoid voltage U c0 behind process AB phase high-frequency rectification circuit, BC phase high-frequency rectification circuit and the CA phase high-frequency rectification circuit respectively, and the corresponding phase place of A phase direct current half-sinusoid current i a0, B phase direct current half-sinusoid current i b0 and C phase direct current half-sinusoid current i c0 is consistent with A single phase poaer supply, B single phase poaer supply and the corresponding phase place of C single phase poaer supply respectively.
As shown in Figure 8: in order to make AB phase inverter circuit, BC phase inverter circuit and CA phase inverter circuit export the high-frequency ac pulse voltage of required width, said inverter current testing circuit comprises an AB phase output current transducer LAa1, a BC phase output current transducer LAb1 and a CA phase output current transducer LAc1; The one AB phase output current transducer LAa1 is serially connected in the AB phase resonance circuit; The output of the one AB phase output current transducer LAa1 links to each other with AB phase current/voltage conversion circuit; The one BC phase output current transducer LAb1 is serially connected in the BC phase resonance circuit; The output of the one BC phase output current transducer Lab1 links to each other with BC phase current/voltage conversion circuit; The one CA phase output current transducer LAc1 is serially connected in the CA phase resonance circuit, and the output of a CA phase output current transducer LAc1 links to each other with CA phase current/voltage conversion circuit; The output negative pole end of AB phase current/voltage conversion circuit links to each other with the output cathode end of BC phase current/voltage conversion circuit; The output negative pole end of BC phase current/voltage conversion circuit links to each other with the output cathode end of CA phase current/voltage conversion circuit; The output cathode end of AB phase current/voltage conversion circuit and the output negative pole end of CA phase current/voltage conversion circuit all with control circuit in shaping pulse zero passage comparison circuit link to each other; Resonance current ia2, ib2 and the ic2 that AB phase current/voltage conversion circuit, BC phase current/voltage conversion circuit and CA phase current/voltage conversion circuit obtain sampling converts corresponding AC signal into; And three AC signals are carried out the addition of same frequency same-phase, and in the input pulse shaping zero passage comparison circuit; The output of said shaping pulse zero passage comparison circuit links to each other with the phase-locked loop frequency tracking circuit, and the output of said phase-locked loop frequency tracking circuit links to each other with phase-shift control circuit.Shaping pulse zero passage comparison circuit output square-wave signal P1, output frequency was followed the tracks of square-wave signal P2 when said square-wave signal P1 passed through the phase-locked loop frequency tracking circuit.
Said output voltage current detection circuit comprises AB phase output voltage sensor LVa, BC phase output voltage sensor LVb, CA phase output voltage sensor LVc, the 2nd AB phase output current transducer LAa2, the 2nd BC phase output current transducer LAb2 and the 2nd CA phase output current transducer LAc2; The output of said AB phase output voltage sensor LVa, BC phase output voltage sensor LVb and CA phase output voltage sensor LVc all links to each other with first adder, detects mean value by first adder output three-phase voltage; The output of the 2nd AB phase output current transducer LAa2, the 2nd BC phase output current transducer LAb2 and the 2nd CA phase output current transducer LAc2 all links to each other with second adder, by second adder output three-phase current detection mean value; First adder links to each other with mlultiplying circuit with the output of second adder, to pass through mlultiplying circuit power output feedback signal Ur; The current value that said the 2nd AB phase output current transducer LAa2, the 2nd BC phase output current transducer LAb2 and the 2nd CA phase output current transducer LAc2 produce when detecting the current value that obtains for Power Regulation power drives load of the present invention carries out power control and regulates the power factor of power supply with respect to electrical network through the respective electrical flow valuve.
The power feedback signal Ur of said mlultiplying circuit output compares with level demand signal through the comparator in the control circuit, and is usually during the comparator comparison that power feedback signal Ur and level demand signal is poor, in the said difference input pi regulator.The output of said comparator links to each other with pi regulator; Pi regulator power output control signal Uk; Said pi regulator links to each other with the shift power control circuit, the shift power control circuit according to the power control signal Uk calculation process of the frequency-tracking square-wave signal P2 of phase-locked loop frequency tracking circuit input and pi regulator input after pulse distributor is followed the tracks of the shift power control signal to the drive circuit output frequency; Particularly, the shift power control circuit is to pulse distributor output pwm pulse signal P3.
AB in said pulse distributor and drive circuit inverter bridge drive circuit, BC phase inverter bridge drive circuit and CA phase inverter bridge drive circuit mutually links to each other; AB phase inverter bridge drive circuit, BC phase inverter bridge drive circuit and CA phase inverter bridge drive circuit respectively with AB mutually the control end of inverter circuit, BC phase inverter circuit and CA phase inverter circuit link to each other so that the high-frequency ac pulse voltage of AB phase inverter circuit, BC phase inverter circuit and CA phase inverter circuit output corresponding pulses width.Wherein, AB phase inverter bridge drive circuit output AB phase drive pulse signal Ga1, Ga2, Ga3 and Ga4, said drive pulse signal Ga1, Ga2, Ga3 and Ga4 respectively with AB mutually in the inverter circuit gate terminal of switching tube corresponding continuous; BC phase inverter bridge drive circuit output BC phase drive pulse signal Gb1, Gb2, Gb3 and Gb4, said drive pulse signal Gb1, Gb2, Gb3 and Gb4 respectively with BC mutually in the inverter circuit gate terminal of switching tube corresponding continuous; CA phase inverter bridge drive circuit output CA phase drive pulse signal Gc1, Gc2, Gc3 and Gc4; The gate terminal of switching tube is corresponding in the inverter circuit mutually links to each other with CA respectively for said drive pulse signal Gc1, Gc2, Gc3 and Gc4; With the switching tube in the difference drive inverse circuit, the realization inverter circuit is exported the high-frequency pulse voltage of required width.
AB phase current/voltage conversion circuit, BC phase current/voltage conversion circuit and CA phase current/voltage conversion circuit are and adopt conventional current/voltage-converted circuit; Shaping pulse zero passage comparison circuit, phase-locked loop frequency tracking circuit, phase-shift control circuit, countdown circuit, AB phase inverter bridge drive circuit, BC phase inverter bridge drive circuit and CA phase inverter bridge drive circuit also all adopt conventional circuit, and its corresponding principle and course of work no longer are detailed here.
As shown in Figure 1: when need of load transformer isolation or step-down; Said AB phase resonance circuit links to each other through AB phase transformer power matching circuit between high-frequency rectification circuit with AB mutually; High-frequency rectification circuit is continuous through BC phase transformer power matching circuit mutually with BC for BC phase resonance circuit, and high-frequency rectification circuit is continuous through CA phase transformer power matching circuit mutually with CA for CA phase resonance circuit.
As shown in Figure 2: said AB phase high-frequency filter circuit comprises the first input filter inductance Lia and the first filter capacitor Cia, and said AB commutating phase circuit comprises the first single-phase rectification bridge BG1a; The two ends of the said first filter capacitor Cia link to each other with first input end, second input of the first single-phase rectification bridge BG1a respectively; The first input end of the first single-phase rectification bridge BG1a also links to each other with A single phase poaer supply Ua through the first input filter inductance Lia, and second input of the first single-phase rectification bridge BG1a links to each other with B single phase poaer supply Ub;
First output of the first single-phase rectification bridge BG1a and the AB drain electrode end of the first switching tube VT1a in the inverter circuit and the drain electrode end of the 3rd switching tube VT3a mutually link to each other, and second output of the first single-phase rectification bridge BG1a links to each other with the source terminal of second switch pipe VT2a and the source terminal of the 4th switching tube VT4a; The drain electrode end of the first switching tube VT1a links to each other through the first high frequency absorption capacitor C 1a with the source terminal of second switch pipe VT2a, and the drain electrode end of the 3rd switching tube VT3a links to each other through the second high frequency absorption capacitor C 2a with the source terminal of the 4th switching tube VT4a; The source terminal of the first switching tube VT1a links to each other with the anode tap of the first diode VD1a, the drain electrode end of second switch pipe VT2a and the cathode terminal of the second diode VD2a; The cathode terminal of the first diode VD1a links to each other with the drain electrode end of the first switching tube VT1a; The anode tap of the second diode VD2a links to each other with the source terminal of second switch pipe VT2a, and the cathode terminal of the second diode VD2a links to each other with the drain electrode end of second switch pipe VT2a; The source terminal of the 3rd switching tube VT3a links to each other with the anode tap of the 3rd diode VD3a, the drain electrode end of the 4th switching tube VT4a and the cathode terminal of the 4th diode VD4a; The cathode terminal of the 3rd diode VD3a links to each other with the drain electrode end of the 3rd switching tube VD3a; The anode tap of the 4th diode VD4a links to each other with the source terminal of the 4th switching tube VT4a; The cathode terminal of the 4th diode VD4a links to each other with the drain electrode end of the 4th switching tube VT4a, and the control end of the first switching tube VT1a, second switch pipe VT2a, the 3rd switching tube VT3a and the 4th switching tube VT4a links to each other with the output of drive circuit; The two ends of the first diode VD1a are parallel with the first junction capacitance CTa1; The two ends of the second diode VD2a are parallel with the second junction capacitance CTa2; The two ends of the 3rd diode VD3a are parallel with the 3rd junction capacitance CTa3, and the two ends of the 4th diode VD4a are parallel with the 4th junction capacitance CTa4;
The anode tap of the source terminal of the 3rd switching tube VT3a and the 3rd diode VD3a links to each other with the end of the first resonant inductance L1a in the AB phase resonance circuit; High-frequency rectification circuit is continuous mutually with AB for the other end of the first resonant inductance L1a, and AB phase high-frequency rectification circuit links to each other with the source terminal of the first switching tube VT1a and the drain electrode end of second switch pipe VT2a through the first resonant capacitance C3a and the AB phase output current transducer LAa1 in the AB phase resonance circuit.Inverter current ia2 in the time of detecting AB phase inverter circuit and AB phase resonance circuit formation loop through an AB phase output current transducer LAa1.
When said AB phase resonance circuit and AB link to each other through AB phase transformer power matching circuit between high-frequency rectification circuit mutually; Said AB phase transformer power matching circuit comprises the first high frequency transformer Ta; The two ends of the first side winding of the said first high frequency transformer Ta link to each other with the first resonant inductance L1a and the first resonant capacitance C3a respectively, and detect AB phase inverter current ia2 through the first resonant capacitance C3a and an AB phase output current transducer LAa1; The two ends of the secondary side winding of the first high frequency transformer Ta respectively with AB mutually the anode tap of the 9th diode D5a in the high-frequency rectification circuit and the anode tap of the tenth diode D6a link to each other, the cathode terminal of the cathode terminal of the tenth diode D6a and the 9th diode D5a interconnects; Output current transducer LAa2 is continuous mutually with the 2nd AB for the cathode terminal of the 9th diode D5a, and the centre cap of the first high frequency transformer Ta secondary side winding is exported A direct current half-sinusoid voltage U a0 mutually with the cathode terminal of the 9th diode D5a; Simultaneously, the end of formation A phase direct current half-sinusoid voltage U a0 is provided with AB phase output voltage sensor LVa.Can measure A phase direct current half-sinusoid voltage ia0 through the 2nd AB phase output current transducer LAa2, obtain A phase direct current half-sinusoid voltage U a0 through AB phase output voltage sensor LVa energy measurement.
It is as shown in Figure 3: when said AB phase resonance circuit directly links to each other between high-frequency rectification circuit with AB mutually; Said AB phase high-frequency circuit comprises the 5th diode D1a, the 6th diode D2a, the 7th diode D3a and the 8th diode D4a; The anode tap of the 5th diode D1a links to each other with the cathode terminal of the 6th diode D2a; The anode tap of the 6th diode D2a links to each other with the anode tap of the 8th diode D4a; The cathode terminal of the 8th diode D4a links to each other with the anode tap of the 7th diode D3a, and the cathode terminal of the cathode terminal of the 7th diode D3a and the 5th diode D1a interconnects; The cathode terminal of the anode tap of the 5th diode D1a and the 6th diode D2a links to each other with the first resonant inductance L1a, and the cathode terminal of the anode tap of the 7th diode D3a and the 8th diode D4a links to each other with the first resonant capacitance C3a.In order to measure AB phase inverter current ia2, A phase direct current half-sinusoid voltage U a0 and A phase direct current half-sinusoid current i a0; Also need an AB phase output current transducer LAa1, AB phase output voltage sensor LVa and the 2nd AB phase output current transducer LAa2 be serially connected in the corresponding position of rectifier bridge, no longer detail here.
Said BC high-frequency filter circuit comprises the second input filter inductance Lib and the second filter capacitor Cib; Said BC commutating phase circuit comprises the second single-phase rectification bridge BG1b, and the two ends of the said second filter capacitor Cib link to each other with first input end, second input of the second single-phase rectification bridge BG1b respectively; The first input end of the second single-phase rectification bridge BG1b also links to each other with B single phase poaer supply Ub through the second input filter inductance Lib, and second input of the second single-phase rectification bridge BG1b links to each other with C single phase poaer supply Uc;
First output of the second single-phase rectification bridge BG1b and the BC drain electrode end of the 5th switching tube VT1b in the inverter circuit and the drain electrode end of the 7th switching tube VT3b mutually link to each other, and second output of the second single-phase rectification bridge BG1b links to each other with the source terminal of the source terminal of the 6th switching tube VT2b and the 8th switching tube VT4b; The drain electrode end of the 5th switching tube VT1b links to each other through the 3rd high frequency absorption capacitor C 1b with the source terminal of the 6th switching tube VT2b, and the drain electrode end of the 7th switching tube VT3b links to each other through the 4th high frequency absorption capacitor C 2b with the source terminal of the 8th switching tube VT4b; The source terminal of the 5th switching tube VT1b links to each other with the drain electrode end of the anode tap of the 11 diode VD1b, the 6th switching tube VT2b and the cathode terminal of the 12 diode VD2b; The cathode terminal of the 11 diode VD1b links to each other with the drain electrode end of the 5th switching tube VT1b; The anode tap of the 12 diode VD2b links to each other with the source terminal of the 6th switching tube VT2b, and the cathode terminal of the 12 diode VD2b links to each other with the drain electrode end of the 6th switching tube VT2b; The source terminal of the 7th switching tube VT3b links to each other with the drain electrode end of the anode tap of the 13 diode VD3b, the 8th switching tube VT4b and the cathode terminal of the 14 diode VD4b; The cathode terminal of the 13 diode VD3b links to each other with the drain electrode end of the 7th switching tube VD3b; The anode tap of the 14 diode VD4b links to each other with the source terminal of the 8th switching tube VT4b; The cathode terminal of the 14 diode VD4b links to each other with the drain electrode end of the 8th switching tube VT4b, and the control end of the 5th switching tube VT1b, the 6th switching tube VT2b, the 7th switching tube VT3b and the 8th switching tube VT4b links to each other with the output of drive circuit; The two ends of said the 11 diode VD1b are parallel with the 5th junction capacitance CTb1; The two ends of the 12 diode VD2b are parallel with the 6th junction capacitance CTb2; The two ends of the 13 diode VD3b are parallel with the 7th junction capacitance CTb3, and the two ends of the 14 diode VD4b are parallel with the 8th junction capacitance CTb4;
The source terminal of the 7th switching tube VT3b and the anode tap of the 13 diode VD3b link to each other with the end of the second resonant inductance L1b in the BC phase resonance circuit; High-frequency rectification circuit is continuous mutually with BC for the other end of the second resonant inductance L1b, and BC phase high-frequency rectification circuit links to each other with the source terminal of the 5th switching tube VT1b and the drain electrode end of the 6th switching tube VT2b through the second resonant capacitance C3b and the BC phase output current transducer LAb1 in the BC phase resonance circuit.
Said BC phase resonance circuit links to each other through BC phase transformer power matching circuit between high-frequency rectification circuit with BC mutually; Said BC phase transformer power matching circuit comprises the second high frequency transformer Tb; The two ends of the first side winding of the said second high frequency transformer Tb link to each other with the second resonant inductance L1b and the second resonant capacitance C3b respectively; The two ends of the secondary side winding of the second high frequency transformer Tb respectively with BC mutually the anode tap of the 19 diode D5b in the high-frequency rectification circuit and the anode tap of the 20 diode D6b link to each other, the cathode terminal of the 20 diode D6b and the cathode terminal of the 19 diode D5b interconnect; Output current transducer LAb2 is continuous mutually with the 2nd BC for the cathode terminal of the 19 diode D5b, and the centre cap of the second high frequency transformer Tb secondary side winding is exported B direct current half-sinusoid voltage U b0 mutually with the cathode terminal of the 19 diode D5b.
As shown in Figure 4: when BC phase resonance circuit when high-frequency rectification circuit directly connects mutually with BC; Said BC phase high-frequency rectification circuit comprises the 15 diode D1b, the 16 diode D2b, the 17 diode D3b and the 18 diode D4b; The anode tap of the 15 diode D1b links to each other with the cathode terminal of the 16 diode D2b; The anode tap of the 16 diode D2b links to each other with the anode tap of the 18 diode D4b; The cathode terminal of the 18 diode D4b links to each other with the anode tap of the 17 diode D3b, and the cathode terminal of the 17 diode D3b and the cathode terminal of the 15 diode D1b be downlink connection mutually.The corresponding connection with the cathode terminal of the 16 diode D2b of the anode tap of the 15 diode D1b back links to each other with the second resonant inductance L1b, and the corresponding connection with the cathode terminal of the 18 diode D4b of the anode tap of the 17 diode D3b back links to each other with the second resonant capacitance C3b; Between the anode tap of the cathode terminal of the 17 diode D3b and the 18 diode D4b, to form B direct current half-sinusoid voltage U b0 mutually.In order to measure BC phase inverter current ib2, B phase direct current half-sinusoid voltage U b0 and B phase direct current half-sinusoid current i b0; Also need a BC phase output current transducer LAb1, BC phase output voltage sensor LVb and the 2nd BC phase output current transducer LAb2 be serially connected in the corresponding position of rectifier bridge, no longer detail here.
Said CA phase High frequency filter comprises the 3rd input filter inductance Lic and the 3rd filter capacitor Cic; CA commutating phase circuit comprises the 3rd single-phase rectification bridge BG1c, and the two ends of said the 3rd filter capacitor Cic link to each other with first input end, second input of the 3rd single-phase rectification bridge BG1c respectively; The first input end of the 3rd single-phase rectification bridge BG1c also links to each other with C single phase poaer supply Uc through the 3rd input filter inductance Lic, and second input of the 3rd single-phase rectification bridge BG1c links to each other with A single phase poaer supply Ua;
First output of the 3rd single-phase rectification bridge BG1c and the CA drain electrode end of the 9th switching tube VT1c in the inverter circuit and the drain electrode end of the 11 switching tube VT3c mutually link to each other, and second output of the 3rd single-phase rectification bridge BG1c links to each other with the source terminal that the source terminal of the tenth switching tube VT2c and twelvemo are closed pipe VT4c; The drain electrode end of the 9th switching tube VT1c links to each other through the 5th high frequency absorption capacitor C 1c with the source terminal of the tenth switching tube VT2c, and the drain electrode end of the 11 switching tube VT3c links to each other through the 6th high frequency absorption capacitor C 2c with the source terminal that twelvemo is closed pipe VT4c; The source terminal of the 9th switching tube VT1c links to each other with the drain electrode end of the anode tap of the 21 diode VD1c, the tenth switching tube VT2c and the cathode terminal of the 22 diode VD2c; The cathode terminal of the 21 diode VD1c links to each other with the drain electrode end of the 9th switching tube VT1c; The anode tap of the 22 diode VD2c links to each other with the source terminal of the tenth switching tube VT2c, and the cathode terminal of the 22 diode VD2c links to each other with the drain electrode end of the tenth switching tube VT2c; The source terminal of the 11 switching tube VT3c closes the drain electrode end of pipe VT4c with the anode tap of the 23 diode VD3c, twelvemo and the cathode terminal of the 24 diode VD4c links to each other; The cathode terminal of the 23 diode VD3c links to each other with the drain electrode end of the 11 switching tube VT3c; The anode tap of the 24 diode VD4c links to each other with the source terminal that twelvemo is closed pipe VT4c; The cathode terminal of the 24 diode VD4c links to each other with the drain electrode end that twelvemo is closed pipe VT4c, and the control end that the 9th switching tube VT1c, the tenth switching tube VT2c, the 7th switching tube VT3b and twelvemo are closed pipe VT4c links to each other with the output of drive circuit; The two ends of the 21 diode VD1c are parallel with the 9th junction capacitance CTc1; The two ends of the 22 diode VD2c are parallel with the tenth junction capacitance CTc2; The two ends of the 23 diode VD3c are parallel with the 11 junction capacitance CTc3, and the two ends of the 24 diode VD4c are parallel with the 12 junction capacitance CTc4;
The source terminal of the 11 switching tube VT3c and the anode tap of the 23 diode VD3c link to each other with the end of the 3rd resonant inductance L1c in the CA phase resonance circuit; High-frequency rectification circuit is continuous mutually with CA for the other end of the 3rd resonant inductance L1c, and CA phase high-frequency rectification circuit links to each other with the source terminal of the 9th switching tube VT1c and the drain electrode end of the tenth switching tube VT2c through the 3rd a resonant capacitance C3c and the CA phase output current transducer LAc1 in the CA phase resonance circuit.
Said CA phase resonance circuit links to each other through CA phase transformer power matching circuit between high-frequency rectification circuit with CA mutually; Said CA phase transformer power matching circuit comprises the 3rd high frequency transformer Tc; The two ends of the first side winding of said the 3rd high frequency transformer Tc link to each other with the 3rd resonant inductance L1c and the 3rd resonant capacitance C3c respectively; The two ends of the secondary side winding of the 3rd high frequency transformer Tc respectively with CA mutually the anode tap of the 29 diode D5c in the high-frequency rectification circuit and the anode tap of the 30 utmost point pipe D6c link to each other, the cathode terminal of the 30 utmost point pipe D6c and the cathode terminal of the 29 diode D5c interconnect; Output current transducer LAc2 is continuous mutually with the 2nd CA for the cathode terminal of the 29 diode D5c, and the centre cap of the 3rd high frequency transformer Tc secondary side winding is exported C direct current half-sinusoid voltage U c0 mutually with the cathode terminal of the 29 diode D5c.
As shown in Figure 5: when CA phase resonance circuit when high-frequency rectification circuit directly connects mutually with CA, said CA phase high-frequency rectification circuit comprises the 25 diode D1c, the 26 diode D2c, the 27 diode D3c, the 28 diode D4c; The anode tap of the 25 diode D1c links to each other with the cathode terminal of the 26 diode D2c; The anode tap of the 26 diode D2c links to each other with the anode tap of the 28 diode D4c; The cathode terminal of the 28 diode D4c links to each other with the anode tap of the 27 diode D3c, corresponding the interconnecting of cathode terminal of the cathode terminal of the 27 diode D3c and the 25 diode D1c.The corresponding connection with the cathode terminal of the 26 diode D2c of the anode tap of the 25 diode D1c back links to each other with the 3rd resonant inductance L1c, and the corresponding connection with the cathode terminal of the 28 diode D4c of the anode tap of the 27 diode D3c back links to each other with the 3rd resonant capacitance C3c.Form C direct current half-sinusoid voltage U c0 mutually between the cathode terminal of the 27 diode D3c and the anode tap of the 28 diode D4c.In order to measure CA phase inverter current ic2, C phase direct current half-sinusoid voltage U c0 and B phase direct current half-sinusoid current i c0; Also need a CA phase output current transducer LAc1, CA phase output voltage sensor LVc and the 2nd CA phase output current transducer LAc2 be serially connected in the corresponding position of rectifier bridge, no longer detail here.
As shown in Figure 6: the equivalent schematic diagram during for inverter circuit of the present invention and resonant circuit corresponding matching.R0 is a load equivalent resistance, comprises load equivalent resistance, BC phase load equivalent resistance and the CA phase load equivalent resistance of AB phase.VT1 representes the first switching tube VT1a of AB phase inverter circuit, the 5th switching tube VT1b of BC phase inverter circuit and the 6th switching tube VT1c of CA phase inverter circuit; VT2 representes the second switch pipe VT2a of AB phase inverter circuit, the 6th switching tube VT2b of BC phase inverter circuit and the tenth switching tube VT2c of CA phase inverter circuit; The situation of VT3 and VT4 and top expression is similar.L1 representes the first resonant inductance L1a, the second resonant inductance L2a and the 3rd resonant inductance L3a, and C3 representes the first resonant capacitance C3a, the second resonant capacitance C3b and the 3rd resonant capacitance C3c.The represented content of CT1, CT2, CT3, CT4, C1, C2, VD1, VD2, VD3 and VD4 can be with reference to the corresponding expression content among the figure 2.When inverter circuit is exported the high-frequency ac pulse voltage of required pulse width; Resonant inductance L1, resonant capacitance C3 in the resonant circuit produce resonance under the effect of high-frequency ac pulse voltage; Thereby make the output current of resonant circuit be interchange sinusoidal attitude, obtain corresponding direct current half-sinusoid voltage through behind the high-frequency rectification circuit again; When linking to each other with load, the phase place of said direct current half-sinusoid electric current and the voltage-phase of unidirectional power supply are consistent, thereby make whole three-phase Power Regulation power supply for electrical network, be resistive load, and power factor is 1.
As shown in Figure 7: as to be the sketch map of analyzing according to the equivalent schematic diagram of Fig. 6.Wherein, G1, G2, G3 and G4 are respectively the gate terminal of switching tube VT1, switching tube VT2, switching tube VT3 and switching tube VT4; The below is that G1, G2, G3 and G4 are at t0～t8 driving voltage constantly; U2 is the magnitude of voltage of inverter circuit output, and i2 is the voltage of the inverter circuit output current value during with resonant circuit formation loop.T0 constantly; Because the gate terminal G1 of switching tube VT1 loads high level; And the gate terminal G2 of switching tube VT2 is a low level, so switching tube VT1 driving, but does not have conducting (not conducting of switching tube VT1; Be that at this moment resonance current is through the inverse parallel diode VD1 conducting of switching tube VT1 because resonance current is negative).In the t0-t1 stage, switching tube VT1 still is in driving condition, and switching tube VT3 also is in driving condition, and form circulation through switching tube VT3, resonant inductance L1, load equivalent resistance R 0, resonant capacitance C3, switching tube VT1 diode connected in parallel VD1 this moment; T1 constantly; When switching tube VT3 gate terminal voltage becomes low level; Switching tube VT3 turn-offs; The junction capacitance CT3 that links to each other with switching tube VT3 charges from no-voltage, guarantees said switching tube VT3 no-voltage shutoff (no-voltage is turn-offed the voltage that is meant switching tube both sides when switching tube turn-offs and kept a period of time near no-voltage); In the t2 moment, the gate terminal G4 of switching tube VT4 is a high level, and switching tube VT4 is at zero current passing; The t2-t3 stage, switching tube VT1 and switching tube VT4 work; In the t3 moment, because the gate terminal G1 of switching tube VT1 is a low level, switching tube VT1 turn-offs, and the junction capacitance CT1 that links to each other with switching tube VT1 charges from no-voltage, guarantees said switching tube VT1 no-voltage shutoff; In the t4 moment, the gate terminal G2 of switching tube VT2 is a high level, and switching tube VT2 drives, but does not have conducting; In the t4-t5 stage, form circulation through switching tube VT2 diode connected in parallel VD2, resonant inductance L1, load equivalent resistance R 0, resonant capacitance C3, switching tube VT4; T5 constantly, by just becoming negative zero crossing, switching tube VT4 is at zero-current switching at the inversion alternating current, charges and the junction capacitance CT3 discharge of switching tube VT3 from no-voltage with the junction capacitance CT4 of said switching tube VT4; The t6 moment, the conducting of switching tube VT3 zero-voltage zero-current; The t6-t7 stage, switching tube VT2 and switching tube VT3 work; In the t7 moment, switching tube VT2 turn-offs and the junction capacitance of switching tube VT2 is charged from no-voltage, guarantees said switching tube VT2 no-voltage shutoff; In the t8 moment, switching tube VT1 drives, but does not have conducting, and one-period finishes; Thereby realize soft switch control to switching tube in the inverter circuit.From the description in this cycle, explained that switching tube of the present invention is operated in zero current or no-voltage conducting and off state, realize soft switch, reduce switching loss and the high frequency radio in space is disturbed.What the high-low level what state of said G1, G2, G3 and G4 was confirmed is determined that by frequency-tracking phase-locked loop and phase-shift control circuit the phase angle between A single-phase voltage Ua, B single-phase voltage Ub and the C single-phase voltage Uc differs 120 degree; In working control, drive circuit is exported the corresponding driving pulse respectively.
AB imported the each point waveform of power-frequency voltage half period translation circuit mutually when Fig. 9 was a phase shifting angle zero.AB imported the each point waveform of power-frequency voltage half period translation circuit mutually when Figure 10 was 90 ° of phase shifting angles.AB imported the each point waveform of power-frequency voltage one-period translation circuit mutually when Figure 11 was a phase shifting angle zero.Said phase shifting angle for according to power given value and the comparison of Feedback of Power value after the angle value that pi regulator and phase-shift control circuit calculate, can confirm that according to phase shifting angle Φ inverter circuit exports the high-frequency pulse voltage of respective pulses width.
Like Fig. 1～shown in Figure 11: during work, high-frequency filter circuit and CA phase high-frequency filter circuit link to each other mutually with AB high-frequency filter circuit, BC respectively with A single phase poaer supply Ua, B single phase poaer supply Ub and C single phase poaer supply Uc.AB phase high-frequency rectification circuit, BC phase high-frequency rectification circuit and CA phase high-frequency rectification circuit link to each other with load respectively.The inverter current testing circuit detects corresponding inverter current value, and AB phase inverter current/voltage conversion circuit, BC phase inverter current/voltage conversion circuit and CA phase inverter current/voltage conversion circuit form the frequency-tracking signal after treatment; AB phase output voltage sensor LVa, BC phase output voltage sensor LVb, CA phase output voltage sensor LVc, the 2nd AB phase output current transducer LAa2, the 2nd BC phase output current transducer LAb2 and the 2nd CA phase output current transducer LAc2 in the output current voltage detecting circuit with correspondent voltage, current signal conversion process after the power output feedback signal, said power feedback signal and level demand signal form power control signal behind comparator comparison, pi regulator; Frequency-tracking signal and power control signal are imported in the phase-shift control circuit simultaneously; Follow the tracks of the shift power control signal to the drive circuit output frequency; Drive circuit is according to said frequency-tracking shift power control signal output drive pulse signal; Said drive pulse signal is regulated the conducting state of AB phase inverter circuit, BC phase inverter circuit and CA phase inverter circuit respectively, so that the high-frequency ac pulse voltage of AB phase inverter circuit, BC phase inverter circuit and CA phase inverter circuit output corresponding pulses width; AB phase inverter circuit, BC phase inverter circuit and CA phase inverter circuit are exported corresponding high-frequency ac pulse voltage and AB phase resonance circuit, BC phase resonance circuit and CA phase resonance circuit corresponding matching; And obtain A phase direct current half-sinusoid voltage U a0, B phase direct current half-sinusoid voltage U b0 and C phase direct current half-sinusoid voltage U c0 behind process AB phase high-frequency rectification circuit, BC phase high-frequency rectification circuit and the CA phase high-frequency rectification circuit respectively, and the corresponding phase place of A phase direct current half-sinusoid current i a0, B phase direct current half-sinusoid current i b0 and C phase direct current half-sinusoid current i c0 is consistent with A single phase poaer supply, B single phase poaer supply and the corresponding phase place of C single phase poaer supply respectively.When the corresponding phase place of A phase direct current half-sinusoid current i a0, B phase direct current half-sinusoid current i b0 and C phase direct current half-sinusoid current i c0 is consistent with A single phase poaer supply, B single phase poaer supply and the corresponding phase place of C single phase poaer supply respectively; Whole three-phase Power Regulation power supply is the resistance load with respect to three phase network; Output power factor is 1 for three phase network, improves the delivery efficiency of three phase network.
The present invention utilizes the input of phase line voltage; After to the phase line voltage commutation, link to each other with inverter circuit, resonant circuit and high-frequency rectification circuit; Between phase line voltage commutation and inverter circuit, need not be connected, improve the input power factor of three phase network through big filter capacitor; Control circuit is according to the set value of the power and the drive circuit corresponding matching of outside input; Make the high-frequency pulse voltage that the inverter circuit output pulse width is adjustable; Output direct current half-sinusoid voltage behind said high-frequency pulse voltage and resonant circuit corresponding matching and the process high-frequency rectification; And the phase place of said direct current half-sinusoid voltage and the phase place of single-phase input line voltage are consistent; Make whole three-phase Power Regulation power supply with respect to three phase network, be the resistance load, output power factor is 1 for three phase network, improves the delivery efficiency of three phase network; Circuit structure is simple, and input power factor is high, and inverter bridge adopts load resonant shift power control soft switch technique, reduces switching loss, improves overall efficiency, and is safe and reliable.
Claims (10)
1. the soft switch three-phase of High Power Factor Power Regulation power supply, comprise with electrical network in AB high-frequency filter circuit, BC phase high-frequency filter circuit and the CA phase high-frequency filter circuit mutually of A single phase poaer supply (Ua), B single phase poaer supply (Ub) and the corresponding connection of C single phase poaer supply (Uc); It is characterized in that:
Said AB phase high-frequency filter circuit links to each other with AB commutating phase circuit; Inverter circuit is continuous mutually with AB for the output of AB commutating phase circuit; The output of AB phase inverter circuit links to each other with AB phase resonance circuit, and AB phase resonance circuit is through AB phase high-frequency rectification circuit output A phase direct current half-sinusoid voltage U a0;
Said BC phase high-frequency filter circuit links to each other with BC commutating phase circuit; Inverter circuit is continuous mutually with BC for the output of BC commutating phase circuit; The output of BC phase inverter circuit links to each other with BC phase resonance circuit, and BC phase resonance circuit is through BC phase high-frequency rectification circuit output B phase direct current half-sinusoid voltage U b0;
Said CA phase high-frequency filter circuit links to each other with CA commutating phase circuit; Inverter circuit is continuous mutually with CA for the output of CA commutating phase circuit; Said CA phase inverter circuit links to each other with CA phase resonance circuit, and CA phase resonance circuit is through CA phase high-frequency rectification circuit output C phase direct current half-sinusoid voltage U c0;
The output of AB phase high-frequency rectification circuit, BC phase high-frequency rectification circuit and CA phase high-frequency rectification circuit all links to each other with the output voltage current detection circuit that is used to detect output voltage and output current signal; The output of said output voltage current detection circuit links to each other with control circuit; Said control circuit links to each other with the inverter current testing circuit output that is used to detect the inverter circuit output current; Said inverter current testing circuit and AB be corresponding the linking to each other of output of inverter circuit, BC phase inverter circuit and CA phase inverter circuit mutually, and control circuit also receives the level demand signal of outside input; The output of said control circuit links to each other with drive circuit, and the output of said drive circuit and the AB control end of inverter circuit, BC phase inverter circuit and CA phase inverter circuit mutually link to each other;
The detection A phase direct current half-sinusoid voltage U a0 that said output voltage current circuit obtains detection, A phase direct current half-sinusoid current i a0, B phase direct current half-sinusoid voltage U b0, B phase direct current half-sinusoid current i b0, C phase direct current half-sinusoid voltage U c0 and C phase direct current half-wave current ic0 correspondent transform are handled back input power feedback signal in control circuit, and control circuit forms power control signal according to the level demand signal of power feedback signal and reception; Inverter current detects handles back incoming frequency tracking signal in control circuit with the AB phase inverter current ia2 that detects, BC phase inverter current ib2 and CA phase inverter current ic2 correspondent transform, and control circuit is followed the tracks of the shift power control signal to the drive circuit output frequency after to said frequency-tracking signal and power control signal calculation process;
Drive circuit is according to frequency-tracking shift power control signal output corresponding driving pulse signal; To regulate the conducting state of AB phase inverter circuit, BC phase inverter circuit and CA phase inverter circuit respectively through the corresponding driving pulse signal, so that the high-frequency ac pulse voltage of AB phase inverter circuit, BC phase inverter circuit and CA phase inverter circuit output corresponding pulses width; AB phase inverter circuit, BC phase inverter circuit and CA phase inverter circuit are exported corresponding high-frequency ac pulse voltage and AB phase resonance circuit, BC phase resonance circuit and CA phase resonance circuit corresponding matching; And obtain A phase direct current half-sinusoid voltage U a0, B phase direct current half-sinusoid voltage U b0 and C phase direct current half-sinusoid voltage U c0 behind process AB phase high-frequency rectification circuit, BC phase high-frequency rectification circuit and the CA phase high-frequency rectification circuit respectively, and the corresponding phase place of A phase direct current half-sinusoid current i a0, B phase direct current half-sinusoid current i b0 and C phase direct current half-sinusoid current i c0 is consistent with A single phase poaer supply, B single phase poaer supply and the corresponding phase place of C single phase poaer supply respectively.
2. the soft switch three-phase of High Power Factor according to claim 1 Power Regulation power supply; It is characterized in that: said AB phase resonance circuit links to each other through AB phase transformer power matching circuit between high-frequency rectification circuit with AB mutually; High-frequency rectification circuit is continuous through BC phase transformer power matching circuit mutually with BC for BC phase resonance circuit, and high-frequency rectification circuit is continuous through CA phase transformer power matching circuit mutually with CA for CA phase resonance circuit.
3. the soft switch three-phase of High Power Factor according to claim 1 Power Regulation power supply is characterized in that: said inverter current testing circuit comprises an AB phase output current transducer (LAa1), a BC phase output current transducer (LAb1) and a CA phase output current transducer (LAc1); The output of a said AB phase output current transducer (LAa1) links to each other with AB phase current/voltage conversion circuit; The output of the one BC phase output current transducer (Lab1) links to each other with BC phase current/voltage conversion circuit, and the output of a CA phase output current transducer (LAc1) links to each other with CA phase current/voltage conversion circuit; The output negative pole end of AB phase current/voltage conversion circuit links to each other with the output cathode end of BC phase current/voltage conversion circuit; The output negative pole end of BC phase current/voltage conversion circuit links to each other with the output cathode end of CA phase current/voltage conversion circuit; The output cathode end of AB phase current/voltage conversion circuit and the output negative pole end of CA phase current/voltage conversion circuit all with control circuit in shaping pulse zero passage comparison circuit link to each other; The output of said shaping pulse zero passage comparison circuit links to each other with the phase-locked loop frequency tracking circuit, and the output of said phase-locked loop frequency tracking circuit links to each other with phase-shift control circuit;
Said output voltage current detection circuit comprises AB phase output voltage sensor (LVa), BC phase output voltage sensor (LVb), CA phase output voltage sensor (LVc), the 2nd AB phase output current transducer (LAa2), the 2nd BC phase output current transducer (LAb2) and the 2nd CA phase output current transducer (LAc2); The output of said AB phase output voltage sensor (LVa), BC phase output voltage sensor (LVb) and CA phase output voltage sensor (LVc) all links to each other with first adder; The output of the 2nd AB phase output current transducer (LAa2), the 2nd BC phase output current transducer (LAb2) and the 2nd CA phase output current transducer (LAc2) all links to each other with second adder; First adder links to each other with mlultiplying circuit with the output of second adder, to pass through mlultiplying circuit power output feedback signal Ur;
The power feedback signal Ur of said mlultiplying circuit output compares with level demand signal through the comparator in the control circuit; The output of said comparator links to each other with pi regulator; Said pi regulator links to each other with the shift power control circuit; Said shift power control circuit links to each other with pulse distributor; AB in said pulse distributor and drive circuit inverter bridge drive circuit, BC phase inverter bridge drive circuit and CA phase inverter bridge drive circuit mutually links to each other; AB phase inverter bridge drive circuit, BC phase inverter bridge drive circuit and CA phase inverter bridge drive circuit respectively with AB mutually the control end of inverter circuit, BC phase inverter circuit and CA phase inverter circuit link to each other so that the high-frequency ac pulse voltage of AB phase inverter circuit, BC phase inverter circuit and CA phase inverter circuit output corresponding pulses width.
4. the soft switch three-phase of High Power Factor according to claim 1 Power Regulation power supply; It is characterized in that: said AB phase high-frequency filter circuit comprises first input filter inductance (Lia) and first filter capacitor (Cia), and said AB commutating phase circuit comprises first single-phase rectification bridge (BG1a); The two ends of said first filter capacitor (Cia) link to each other with first input end, second input of first single-phase rectification bridge (BG1a) respectively; The first input end of first single-phase rectification bridge (BG1a) also links to each other with A single phase poaer supply (Ua) through the first input filter inductance (Lia), and second input of first single-phase rectification bridge (BG1a) links to each other with B single phase poaer supply (Ub);
First output of first single-phase rectification bridge (BG1a) and the AB drain electrode end of first switching tube (VT1a) in the inverter circuit and the drain electrode end of the 3rd switching tube (VT3a) mutually link to each other, and second output of first single-phase rectification bridge (BG1a) links to each other with the source terminal of second switch pipe (VT2a) and the source terminal of the 4th switching tube (VT4a); The drain electrode end of first switching tube (VT1a) links to each other through the first high frequency absorption electric capacity (C1a) with the source terminal of second switch pipe (VT2a), and the drain electrode end of the 3rd switching tube (VT3a) links to each other through the second high frequency absorption electric capacity (C2a) with the source terminal of the 4th switching tube (VT4a); The source terminal of first switching tube (VT1a) links to each other with the drain electrode end of the anode tap of first diode (VD1a), second switch pipe (VT2a) and the cathode terminal of second diode (VD2a); The cathode terminal of first diode (VD1a) links to each other with the drain electrode end of first switching tube (VT1a); The anode tap of second diode (VD2a) links to each other with the source terminal of second switch pipe (VT2a), and the cathode terminal of second diode (VD2a) links to each other with the drain electrode end of second switch pipe (VT2a); The source terminal of the 3rd switching tube (VT3a) links to each other with the drain electrode end of the anode tap of the 3rd diode (VD3a), the 4th switching tube (VT4a) and the cathode terminal of the 4th diode (VD4a); The cathode terminal of the 3rd diode (VD3a) links to each other with the drain electrode end of the 3rd switching tube (VD3a); The anode tap of the 4th diode (VD4a) links to each other with the source terminal of the 4th switching tube (VT4a); The cathode terminal of the 4th diode (VD4a) links to each other with the drain electrode end of the 4th switching tube (VT4a), and the control end of first switching tube (VT1a), second switch pipe (VT2a), the 3rd switching tube (VT3a) and the 4th switching tube (VT4a) links to each other with the output of drive circuit; The two ends of first diode (VD1a) are parallel with first junction capacitance (CTa1); The two ends of second diode (VD2a) are parallel with second junction capacitance (CTa2); The two ends of the 3rd diode (VD3a) are parallel with the 3rd junction capacitance (CTa3), and the two ends of the 4th diode (VD4a) are parallel with the 4th junction capacitance (CTa4);
The anode tap of the source terminal of the 3rd switching tube (VT3a) and the 3rd diode (VD3a) links to each other with an end of first resonant inductance (L1a) in the AB phase resonance circuit; High-frequency rectification circuit is continuous mutually with AB for the other end of first resonant inductance (L1a), and AB phase high-frequency rectification circuit links to each other with the source terminal of first switching tube (VT1a) and the drain electrode end of second switch pipe (VT2a) through first resonant capacitance (C3a) and the AB phase output current transducer (LAa1) in the AB phase resonance circuit.
5. the soft switch three-phase of High Power Factor according to claim 4 Power Regulation power supply, it is characterized in that: said AB phase high-frequency circuit comprises the 5th diode (D1a), the 6th diode (D2a), the 7th diode (D3a) and the 8th diode (D4a); The anode tap of the 5th diode (D1a) links to each other with the cathode terminal of the 6th diode (D2a); The anode tap of the 6th diode (D2a) links to each other with the anode tap of the 8th diode (D4a); The cathode terminal of the 8th diode (D4a) links to each other with the anode tap of the 7th diode (D3a), and the cathode terminal of the cathode terminal of the 7th diode (D3a) and the 5th diode (D1a) interconnects; The cathode terminal of the anode tap of the 5th diode (D1a) and the 6th diode (D2a) links to each other with first resonant inductance (L1a), and the cathode terminal of the anode tap of the 7th diode (D3a) and the 8th diode (D4a) links to each other with first resonant capacitance (C3a).
6. the soft switch three-phase of High Power Factor according to claim 4 Power Regulation power supply is characterized in that: when said AB phase resonance circuit and AB link to each other through AB phase transformer power matching circuit between high-frequency rectification circuit mutually; Said AB phase transformer power matching circuit comprises first high frequency transformer (Ta); The two ends of the first side winding of said first high frequency transformer (Ta) link to each other with first resonant inductance (L1a) and first resonant capacitance (C3a) respectively; The anode tap of the 9th diode (D5a) in the high-frequency rectification circuit and the anode tap of the tenth diode (D6a) link to each other mutually with AB respectively at the two ends of the secondary side winding of first high frequency transformer (Ta); The cathode terminal of the cathode terminal of the tenth diode (D6a) and the 9th diode (D5a) interconnects, and output current transducer (LAa2) is continuous mutually with the 2nd AB for the cathode terminal of the 9th diode (D5a); The centre cap of first high frequency transformer (Ta) secondary side winding is exported A direct current half-sinusoid voltage U a0 mutually with the cathode terminal of the 9th diode (D5a).
7. the soft switch three-phase of High Power Factor according to claim 1 Power Regulation power supply is characterized in that: said BC high-frequency filter circuit comprises second input filter inductance (Lib) and second filter capacitor (Cib); Said BC commutating phase circuit comprises second single-phase rectification bridge (BG1b), and the two ends of said second filter capacitor (Cib) link to each other with first input end, second input of second single-phase rectification bridge (BG1b) respectively; The first input end of second single-phase rectification bridge (BG1b) also links to each other with B single phase poaer supply (Ub) through the second input filter inductance (Lib), and second input of second single-phase rectification bridge (BG1b) links to each other with C single phase poaer supply (Uc);
First output of second single-phase rectification bridge (BG1b) and the BC drain electrode end of the 5th switching tube (VT1b) in the inverter circuit and the drain electrode end of the 7th switching tube (VT3b) mutually link to each other, and second output of second single-phase rectification bridge (BG1b) links to each other with the source terminal of the 6th switching tube (VT2b) and the source terminal of the 8th switching tube (VT4b); The drain electrode end of the 5th switching tube (VT1b) links to each other through the 3rd high frequency absorption electric capacity (C1b) with the source terminal of the 6th switching tube (VT2b), and the drain electrode end of the 7th switching tube (VT3b) links to each other through the 4th high frequency absorption electric capacity (C2b) with the source terminal of the 8th switching tube (VT4b); The source terminal of the 5th switching tube (VT1b) links to each other with the drain electrode end of the anode tap of the 11 diode (VD1b), the 6th switching tube (VT2b) and the cathode terminal of the 12 diode (VD2b); The cathode terminal of the 11 diode (VD1b) links to each other with the drain electrode end of the 5th switching tube (VT1b); The anode tap of the 12 diode (VD2b) links to each other with the source terminal of the 6th switching tube (VT2b), and the cathode terminal of the 12 diode (VD2b) links to each other with the drain electrode end of the 6th switching tube (VT2b); The source terminal of the 7th switching tube (VT3b) links to each other with the drain electrode end of the anode tap of the 13 diode (VD3b), the 8th switching tube (VT4b) and the cathode terminal of the 14 diode (VD4b); The cathode terminal of the 13 diode (VD3b) links to each other with the drain electrode end of the 7th switching tube (VD3b); The anode tap of the 14 diode (VD4b) links to each other with the source terminal of the 8th switching tube (VT4b); The cathode terminal of the 14 diode (VD4b) links to each other with the drain electrode end of the 8th switching tube (VT4b), and the control end of the 5th switching tube (VT1b), the 6th switching tube (VT2b), the 7th switching tube (VT3b) and the 8th switching tube (VT4b) links to each other with the output of drive circuit; The two ends of said the 11 diode (VD1b) are parallel with the 5th junction capacitance (CTb1); The two ends of the 12 diode (VD2b) are parallel with the 6th junction capacitance (CTb2); The two ends of the 13 diode (VD3b) are parallel with the 7th junction capacitance (CTb3), and the two ends of the 14 diode (VD4b) are parallel with the 8th junction capacitance (CTb4);
The source terminal of the 7th switching tube (VT3b) and the anode tap of the 13 diode (VD3b) link to each other with an end of second resonant inductance (L1b) in the BC phase resonance circuit; High-frequency rectification circuit is continuous mutually with BC for the other end of second resonant inductance (L1b), and BC phase high-frequency rectification circuit links to each other with the source terminal of the 5th switching tube (VT1b) and the drain electrode end of the 6th switching tube (VT2b) through second resonant capacitance (C3b) and the BC phase output current transducer (LAb1) in the BC phase resonance circuit.
8. the soft switch three-phase of High Power Factor according to claim 7 Power Regulation power supply is characterized in that: said BC phase resonance circuit links to each other through BC phase transformer power matching circuit between high-frequency rectification circuit with BC mutually; Said BC phase transformer power matching circuit comprises second high frequency transformer (Tb); The two ends of the first side winding of said second high frequency transformer (Tb) link to each other with second resonant inductance (L1b) and second resonant capacitance (C3b) respectively; The two ends of the secondary side winding of second high frequency transformer (Tb) respectively with BC mutually the anode tap of the 19 diode (D5b) in the high-frequency rectification circuit and the anode tap of the 20 diode (D6b) link to each other, the cathode terminal of the 20 diode (D6b) and the cathode terminal of the 19 diode (D5b) interconnect; Output current transducer (LAb2) is continuous mutually with the 2nd BC for the cathode terminal of the 19 diode (D5b), and the centre cap of second high frequency transformer (Tb) secondary side winding is exported B direct current half-sinusoid voltage U b0 mutually with the cathode terminal of the 19 diode (D5b).
9. the soft switch three-phase of High Power Factor according to claim 1 Power Regulation power supply; It is characterized in that: said CA phase High frequency filter comprises the 3rd input filter inductance (Lic) and the 3rd filter capacitor (Cic); CA commutating phase circuit comprises the 3rd single-phase rectification bridge (BG1c), and the two ends of said the 3rd filter capacitor (Cic) link to each other with first input end, second input of the 3rd single-phase rectification bridge (BG1c) respectively; The first input end of the 3rd single-phase rectification bridge (BG1c) also links to each other with C single phase poaer supply (Uc) through the 3rd input filter inductance (Lic), and second input of the 3rd single-phase rectification bridge (BG1c) links to each other with A single phase poaer supply (Ua);
First output of the 3rd single-phase rectification bridge (BG1c) and the CA drain electrode end of the 9th switching tube (VT1c) in the inverter circuit and the drain electrode end of the 11 switching tube (VT3c) mutually link to each other, and the source terminal of second output of the 3rd single-phase rectification bridge (BG1c) and the tenth switching tube (VT2c) and twelvemo are closed the source terminal of managing (VT4c) and linked to each other; The drain electrode end of the 9th switching tube (VT1c) links to each other through the 5th high frequency absorption electric capacity (C1c) with the source terminal of the tenth switching tube (VT2c), and the drain electrode end of the 11 switching tube (VT3c) links to each other through the 6th high frequency absorption electric capacity (C2c) with the source terminal that twelvemo is closed pipe (VT4c); The source terminal of the 9th switching tube (VT1c) links to each other with the drain electrode end of the anode tap of the 21 diode (VD1c), the tenth switching tube (VT2c) and the cathode terminal of the 22 diode (VD2c); The cathode terminal of the 21 diode (VD1c) links to each other with the drain electrode end of the 9th switching tube (VT1c); The anode tap of the 22 diode (VD2c) links to each other with the source terminal of the tenth switching tube (VT2c), and the cathode terminal of the 22 diode (VD2c) links to each other with the drain electrode end of the tenth switching tube (VT2c); The source terminal of the 11 switching tube (VT3c) closes the drain electrode end of pipe (VT4c) with the anode tap of the 23 diode (VD3c), twelvemo and the cathode terminal of the 24 diode (VD4c) links to each other; The cathode terminal of the 23 diode (VD3c) links to each other with the drain electrode end of the 11 switching tube (VT3c); The anode tap of the 24 diode (VD4c) links to each other with the source terminal that twelvemo is closed pipe (VT4c); The cathode terminal of the 24 diode (VD4c) links to each other with the drain electrode end that twelvemo is closed pipe (VT4c), and the control end that the 9th switching tube (VT1c), the tenth switching tube (VT2c), the 7th switching tube (VT3b) and twelvemo are closed pipe (VT4c) links to each other with the output of drive circuit; The two ends of the 21 diode (VD1c) are parallel with the 9th junction capacitance (CTc1); The two ends of the 22 diode (VD2c) are parallel with the tenth junction capacitance (CTc2); The two ends of the 23 diode (VD3c) are parallel with the 11 junction capacitance (CTc3), and the two ends of the 24 diode (VD4c) are parallel with the 12 junction capacitance (CTc4);
The source terminal of the 11 switching tube (VT3c) and the anode tap of the 23 diode (VD3c) link to each other with an end of the 3rd resonant inductance (L1c) in the CA phase resonance circuit; High-frequency rectification circuit is continuous mutually with CA for the other end of the 3rd resonant inductance (L1c), and CA phase high-frequency rectification circuit links to each other with the source terminal of the 9th switching tube (VT1c) and the drain electrode end of the tenth switching tube (VT2c) through the 3rd resonant capacitance (C3c) and the CA phase output current transducer (LAc1) in the CA phase resonance circuit.
10. the soft switch three-phase of High Power Factor according to claim 9 Power Regulation power supply is characterized in that: said CA phase resonance circuit links to each other through CA phase transformer power matching circuit between high-frequency rectification circuit with CA mutually; Said CA phase transformer power matching circuit comprises the 3rd high frequency transformer (Tc); The two ends of the first side winding of said the 3rd high frequency transformer (Tc) link to each other with the 3rd resonant inductance (L1c) and the 3rd resonant capacitance (C3c) respectively; The two ends of the secondary side winding of the 3rd high frequency transformer (Tc) respectively with CA mutually the anode tap of the 29 diode (D5c) in the high-frequency rectification circuit and the anode tap of the 30 utmost point pipe (D6c) link to each other, the cathode terminal of the 30 utmost point pipe (D6c) and the cathode terminal of the 29 diode (D5c) interconnect; Output current transducer (LAc2) is continuous mutually with the 2nd CA for the cathode terminal of the 29 diode (D5c), and the centre cap of the 3rd high frequency transformer (Tc) secondary side winding is exported C direct current half-sinusoid voltage U c0 mutually with the cathode terminal of the 29 diode (D5c).
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| CN113726174A (en) * | 2021-07-29 | 2021-11-30 | 矽力杰半导体技术(杭州)有限公司 | Control circuit and resonant converter using same |
| CN113972843A (en) * | 2021-10-25 | 2022-01-25 | 珠海格力电器股份有限公司 | Frequency tracking control method and device and power supply |
| CN117118252A (en) * | 2023-10-24 | 2023-11-24 | 湖南汇鑫电力成套设备有限公司 | LCC resonant magnetron sputtering power supply |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108667318A (en) * | 2018-07-03 | 2018-10-16 | 深圳市英可瑞科技股份有限公司 | A kind of rectification circuit and its control method |
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| CN113726174A (en) * | 2021-07-29 | 2021-11-30 | 矽力杰半导体技术(杭州)有限公司 | Control circuit and resonant converter using same |
| CN113726174B (en) * | 2021-07-29 | 2024-03-22 | 矽力杰半导体技术(杭州)有限公司 | Control circuit and resonant converter using same |
| CN113972843A (en) * | 2021-10-25 | 2022-01-25 | 珠海格力电器股份有限公司 | Frequency tracking control method and device and power supply |
| CN113972843B (en) * | 2021-10-25 | 2023-10-10 | 珠海格力电器股份有限公司 | Frequency tracking control method, device and power supply |
| CN117118252A (en) * | 2023-10-24 | 2023-11-24 | 湖南汇鑫电力成套设备有限公司 | LCC resonant magnetron sputtering power supply |
| CN117118252B (en) * | 2023-10-24 | 2024-01-16 | 湖南汇鑫电力成套设备有限公司 | LCC resonant magnetron sputtering power supply |
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