CN101151791A - Bridgeless boost converter with PFC circuit - Google Patents
Bridgeless boost converter with PFC circuit Download PDFInfo
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- CN101151791A CN101151791A CNA2006800105825A CN200680010582A CN101151791A CN 101151791 A CN101151791 A CN 101151791A CN A2006800105825 A CNA2006800105825 A CN A2006800105825A CN 200680010582 A CN200680010582 A CN 200680010582A CN 101151791 A CN101151791 A CN 101151791A
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Abstract
A boost type power supply circuit for providing a DC output voltage comprising first and second semiconductor switches coupled between respective input lines and a common connection; an AC input voltage from an AC source being supplied across the input lines; first and second diodes coupled in series with respective ones of the switches; third and fourth diodes coupled across respective ones of the switches in a free-wheeling relationship with the switches; an inductance coupled in at least one of the input lines; a controller for controlling the conduction times of the switches by providing a pulse width control signal to each of the switches; wherein the controller turns on at least one of the switches during a positive half cycle of the AC voltage to allow energy storage in the inductance and turns off the at least one switch to allow the energy stored in the inductance to be supplied to an attached load through one of the first and second diodes and one of the third or fourth diodes; and the controller turns on at least one of the switches during a negative half cycle of the AC voltage to allow energy storage in the inductance and turns off at least one switch to allow the energy stored in the inductance to be supplied to the attached load through one of the first and second diodes and one of the third and fourth diodes. The controller determines an on-time and an off-time of a pulse of the pulse width modulated control signal during each half cycle of the AC voltage, the on-time and off-time of the pulse being controlled to regulate said output voltage and to provide power factor correction of said AC input voltage, based on either voltage sensing or current sensing.
Description
Related application
The application is 60/666,950 U.S. Provisional Patent Application (IR-2965PROV) and requires its priority based on the sequence number of submitting on March 31st, 2005, is hereby expressly incorporated by reference.
The application is that the sequence number of submitting on September 29th, 2004 is 10/953, the part continuity (IR-2593) of 344 U. S. application, be hereby expressly incorporated by reference, the application is 60/507 based on the sequence number of submitting on October 1st, 2003,901 U.S. Provisional Patent Application also requires its priority, is hereby expressly incorporated by reference.
Technical field
The present invention relates to the to have PFC Bridgeless boost converter of (regenerative circuit) relates in particular to the converter circuit that for example can be applicable in the air-conditioning.
Background technology
In all industrialization and emerging nation, the demand of the increase of air-conditioning system has within doors been begun to influence the energy consumption in summer by what environmental change promoted.
New statutory regulation and more the conscious consumer of energy is required the better energy effective system.Yet in cost, reliability be easy to design aspect, finding a kind of energy management circuit solution that can satisfy the standard of whole efficient and control is a major challenge to designers.
For the designers of the family market consumer goods, particularly important to the exploration of economize on electricity.The key element that complexity increases is that according to the new regulation of Europe and China, input converter and power factor are regulated same order.
Because almost all there is serious energy problem in each country, by improving the efficiency such as articles for use such as washing machine, water heater and particularly air-conditionings, government has disposed desires a large amount of plans that reduce the waste of energy resource consumption aspect.
Not only in the U.S. and Japan, and in Europe with comprise many emerging nations of the nations of China and India, indoor and residential air conditioner begins to have big breakthrough.
In the U.S., energy sector has issued multiple new efficiency standard to the typical articles for use of major part recently.In Europe and Japanese, similarly initiation has begun to carry out.
Residential air conditioner market (the about 35M in a whole world unit manufacturing) innately is a kind of " high-impact product " for the efficiency plan.
In the U.S., the final regulation of air-conditioning and heat pump was set up strict minimum efficiency standard, in onset on January 23 in 2006.By reducing the SEER (seasonal energy efficiency ratio (seer)) of air-conditioning system, can reduce the annual operating cost of 50%-75%.
For air-conditioning system, saving economically is higher usually because with other appliance application mutually ratio piston compressor to have inside more high-power.
Yet if do not adopt variable speed compressor transmission standard A C (interchange) induction or BLDC (brush DC) compressor more extensively, these are saved almost is impossible realize.Yet the electronic inverter that is used to control motor is not enough to obtain these results usually.
Because the input large value capacitor is only to the sinusoidal wave peak value charging of voltage, thereby induced current peak value, as shown in the figure 1, therefore preposition in these inverter circuits the bridge rectifier/capacitor of (and in linear and switched-mode power supply) provide very high nonlinear load to main line.
Therefore the non-sinusoidal current pulse comprises base row harmonic wave frequently, and each harmonic wave all has important interior energy.
The combined influence of these low-power factors and Harmonic Interference is multiplied by a large amount of similar systems of often operating simultaneously, has reduced the power supply network capacity, has increased the weight of energy problem in fact, causes distribution to interrupt and deficiency.Therefore, in order to operate efficiently according to domestic or international standard, the electronic motor control of the type requires input is adopted the power factor compensation circuit.
Current standard EN/IEC61000-3-2 has 4 product categories, and each all has self limit class value to harmonic current and power factor.
The EN61000-3-2 standard application is divided into category-A in all over products that reaches 16 amperes of every phases and current standard with all motor driving apparatus, and this standard is subjected to the strictest limiting value constraint.The industrial several different methods that adopted solves this problem.
The simplest solution is passive PFC topology, and wherein for example simple inductance is directly connected with main line.For the power level of aircondition within doors, this Sparta method has a lot of restrictions: the size of inductance and weight, cost and low power factor compensation performance.
Obtain more performance, unique feasible selection is exactly to adopt active PFC topology.Yet active PFC circuit is more complicated and require more multicomponent, and is improper if active PFC circuit is selected, and may influence the gross efficiency of system.
The topology of Fig. 4 is commonly used for the preconditioner to the transducer in the general AC power supplies input.Transducer can be the power electronic circuit that power supply or motor driver or other any requirements meet the power transmission line quality standard.
Use comprises the off-line bridge rectifier of diode D, is in series with inductance L and diverting switch M thereafter.The induction energy storage is released to store electricity sensor C to form adjustable low ripple voltage DC output.This circuit suitably is raised to the power level of about 2.5KW.
As seen from Figure 4, the power flow that is input to the DC load from AC comprises two diode drops in the rectifier and a pressure drop in the booster diode DB.In addition, also have and current sense resistance R pressure drop associated.
The complexity that increases at the energy management circuit design aspect has further increased challenge to engineer and producer.
The electric power that the improvement of semiconductor manufacturing and packaging technology aspect can be applied to apparatus and light industry market is at present used to help to solve these new problems.
In inverter was used, the trend that all power semiconductors is integrated into the single supply group can expand to input converter at an easy rate to be engaged in and to help to solve power adjustments.
Summary of the invention
This specification provides the example of high-performance input converter, for example driven compressor and Electric Machine Control is driven, and uses new topology also to use the iMotion packaging technology of Int Rectifier Corp simultaneously.
In multiple power factor circuit topology, disclosed no bridge topology works for some reason in the sequence number 10/953,344 (TR-2593), especially works for the driven compressor in Electric Machine Control application and the air-conditioning system.
With reference to Fig. 2 and 3, now the operation to basic topology is described according to two kinds of situations of the input voltage of main power source.
Positive half period
When ac input voltage for just, the grid of MOSFET (mos field effect transistor) M1 is upgraded to height and electric current I L from the input inductance of flowing through, energy storage.When M1 closes, the energy in the inductance is with electric current flow through D1, load and flow back to incoming trunk from the body diode of MOSFET M2 and discharge.
In the down periods, the electric current of process inductance L (exoergic this moment) flows through booster diode D1, and circuit is through the load closure.
Negative half-cycle
Open the electric current inductance L of flowing through, energy storage at negative half-cycle M2.When M2 closes, energy is with electric current flow through D2, load and flow back to main line from the body diode of M1 and discharge.
Be noted that two MOSFET can drive simultaneously, because exist body diode to make electric current recirculation in the cycle in reversed polarity.
Because the innovation of new silicon technology and advanced integrated and packaging technology, described input converter topology can be implemented like a cork.
Compare with traditional single boost switching topology pfc circuit, no bridge topology provides efficiency gains and can save cost, more precisely:
Efficiency gains
In power stream, reduce by a diode
Because with the conducting of main power source frequency and have low V
F, need not fast quick-recovery and be connected across diode on the IGBT (insulated gate bipolar transistor).
More efficient IGBT.
Cost savings
No independent input AC rectifier.
Can reduce input filter.
Because distributed thermal source is facilitated littler fin, and efficient is better.
Two IGBT with less crystalline areas (each switch half electric current).
Because less IGBT crystal total effective area, the requirement of gate driving reduces.
Consider that for these various embodiments of the present invention provides a kind of booster type power circuit that is used to provide the DC output voltage, this circuit comprises first and second semiconductor switchs that are connected between each incoming line and the public connection; To be provided at from the ac input voltage of AC power supplies on the incoming line; First and second diodes are connected with switch separately; The third and fourth diode parallel connection is connected across on separately the switch and/or with described switch afterflow separately and is connected; Inductor is connected at least one incoming line; Controller arrives each switch with the control switch conduction time by the pulse duration control signal is provided; Wherein said controller opens at least one switch in the positive half period of AC voltage so that inductive energy storage, and closes described at least one switch so that in energy of storing in the inductance in first and second diodes and the 3rd or the 4th diode offers additional load; And described controller opens at least one switch in the negative half-cycle of AC voltage so that inductive energy storage, and closes described at least one switch so that in the energy of storing in the inductance in first and second diodes and third and fourth diode offers additional load.The turn-on time and the shut-in time of the pulse of the modulated control signal of pulse duration in each half period of described controller decision AC voltage, based on voltage induced or induction by current, the turn-on time of control impuls and shut-in time are to regulate described output voltage and the power factor compensation of described ac input voltage is provided.
In conjunction with the accompanying drawings, other features and advantages of the present invention will clearer description in addition in following embodiments of the present invention.
Description of drawings
Fig. 1 is preposition structure of conventional converters and work schematic diagram;
Fig. 2 be in the sequence number 10/953,344 disclosed do not have substantially the bridge converter topologies with and work schematic diagram in positive half period;
Fig. 3 be among Fig. 2 transducer at the work schematic diagram of negative half-cycle;
Fig. 4 is the schematic diagram with traditional boost converter of PFC;
Fig. 5 is the schematic diagram according to the non-bridge PFC circuits of first embodiment of the invention;
Fig. 6 is the schematic diagram according to the non-bridge PFC circuits of second embodiment of the invention;
Fig. 7 is the schematic diagram according to the non-bridge PFC circuits of first execution mode distortion; And
Fig. 8 is the schematic diagram according to the non-bridge PFC circuits of third embodiment of the invention.
Embodiment
The circuit of Fig. 5 is placed on inductance in the AC circuit, place before the rectifier diode D1-D4, thereby D1 and D3 has the dual-use function of rectification and booster diode.Circuit after clearly improving has littler diode drop on power flow.Because circuit moves at 120Hz, in fact eliminated switching loss, and D1-D4 and Q1-Q2 be the standard speed element, their extra advantages are to have lower conduction loss than quick semiconductor.Q1 and Q2 for example can be IGBT.
The no-voltage of controller induction AC input signal is staggered and Q1 and the Q2 of IGBT produced the PWM drive signal.
The circuit transmission does not have greater than 0.99 power factor and surpasses+induction by current that/-10% characteristic curve changes.Under the DC of 280V bus voltage, in the 230VAC circuit, transmit the effect of 1KW〉greater than 98%.
The IGBT switch can very little (crystalline areas be #2), even because they are driven the half period conducting that is also only taking turns simultaneously.
In schematic diagram 6, in conventional bridge rectifier topology, the negative electrode of two diodes (D2, D4) separates, and is connected to the master of inductor now.Inefficiency difference between the circuit of Fig. 5 and Fig. 6.Yet among Fig. 6, inductor is the timing conducting when each AC line only, and load has the not conducting of when backflow, and just because of this, described inductor has the DC flux component.
Because described connection, DC backflow bus is fixed, and does not have the 120Hz switching voltage of foregoing circuit.The result is that systems radiate goes out lower EMI (electromagnetic interference).
Fig. 7 illustrate with Fig. 5 in similar transducer, construct described transducer to calculate in no bridge construction the efficient of input converter completely.Circuit is at 1200W power (typically being used for 12000btu/ hour air-conditioning system).Power IGBT switch Q1, Q2 are driven by special-purpose gate driver circuit, and this drive circuit has provides the 50KHz of input signal variable duty ratio maker.
Use the state-of-the-art silicon technology of Int Rectifier Corp can obtain optimum performance.In this case, for the rectifier part, the IGBT power switch is two IRGB20B06UPD1Warp2 series, and for minimum recovery time and minimum restoring electric current, four 8ETX06 diodes are the most suitable.Following table 1 shows the switching loss as the input converter of input line voltage and bearing power.
Table 1
| Ac input voltage | Input power | IRGB20B60PD1 | ||
| E ON | E OFF | Switching loss | ||
| 95V | 300W | 73 | 133 | 10.3W |
| 600 | 198 | 292 | 24.5 | |
| 900 | 258 | 438 | 34.8 | |
| 265V | 300W | 37 | 64 | 5.05 |
| 600 | 117 | 96 | 10.65 | |
| 900 | 171 | 147 | 15.9 | |
| 1200 | 322 | 239 | 28.05 | |
Measure input converter total losses and efficient under the following conditions: suppose that input voltage is at minimum 95V
RMSThe highest 265V
RMSBetween variable, and bus voltage constant be 400V
DCUnder the fixed switching frequency of 50KHz, test.Because test is to carry out being used to preset in the scope of switch at input voltage of bus voltage under the situation such with constant duty ratio work, therefore the total losses of report are considered to the poorest situation here.In normal the application, duty ratio (under the situation of continuous-mode operation) is variable, has significantly reduced the switching loss element.Following table 2 shows the result of acquisition.
Table 2
| Input AC voltage | Input AC electric current | Input power | Output dc voltage | Output DC electric current | Power output | Total losses | Efficient |
| V | A | W | V | A | W | W | ％ |
| 95.5 | 4.02 | 308 | 400.6 | 0.7 | 275.7 | 32.5 | 89.5 |
| 95.4 | 8.10 | 621 | 399.5 | 1.4 | 560.0 | 61.0 | 90.2 |
| 95.6 | 12.30 | 951 | 400.3 | 2.1 | 845.3 | 105.7 | 89.9 |
| 265.6 | 2.03 | 292 | 399.5 | 0.7 | 285.0 | 7.0 | 97.6 |
| 265.7 | 4.00 | 586 | 400.2 | 1.4 | 572.0 | 14.0 | 97.6 |
| 265.5 | 5.87 | 880 | 400.3 | 2.1 | 854.0 | 26.0 | 97.0 |
| 265.2 | 7.75 | 1178 | 400.9 | 2.9 | 1143 | 35.0 | 97.0 |
The test circuit of Fig. 7 is used for the loss of the light and handy bridge architecture of comparison typical case.In the PFC of reality adjuster, custom independent measurement IGBT collector current and diode bridge electric current are as the circuit of Fig. 8.
Select Warp2 series IGBT (Int Rectifier Corp) equipment to be used for this topological structure, and this equipment provides current measurement and the feedback of simplifying very much, allow for example induction by current to be connected with diode circuit placement, the continuous current outside the inductive switch element thus.
Fig. 8 shows another example of Bridgeless boost inverter circuit, comprises induction by current.The effect of PFC requires the electric current that control obtains from main line and makes it and input voltage waveform mates.In order to finish this process, electric current is sensed and feed back to the control circuit (not shown) that control signal DRIVE (driving) is provided in two terminal inductors.By between the anode node that is connected D1 and D2 and the one or more shunt resistance R3 between the emitter node of TR1 and TR2, the induction by current in this example is achieved.By using the IGBT switch to not be used in sequence number is MOSFET in 10/953,344 the file, and this arrangement is more easy, because the free-wheel diode of IGBT on different chips, is different from the body diode in the MOSFET structure.In this embodiment, conllinear COM is by the anode definition of diode D1 and D2.Output capacitance C is provided between the cathode terminal V+ of COM and booster diode D3 and D4.
Individual other additional standard has been optimised non-bridge PFC and has paid close attention to obtain improved performance.By selecting the IGBT gate drivers can reach this purpose.For effective operation, the switching loss of IGBT is minimized.
The solid gate drivers can move with the switching frequency greater than 50KHz, and the fast lifting time (when loading two IRGB20B60) and the Rg that produce less than 100nS are low to moderate 6.8ohms.This drives function and can obtain by adopting the IR4427IC driver, and described driver has the dynamic and electric current fan-out capability of expectation.The same with adjuster with all power switch circuits, layout is critical; Therefore adopting the integrated power supply module with input converter topology, induction by current and gate drivers that the possibility of simple plug and play solution is provided is to help the Electronics Engineer to face the correct option of power management issue challenge.Nowadays only with 2 IR IPM modules with regard to can integrated all functions and circuit to obtain the power management function of the typical driver that is used for air conditioning applications.
Analyzed input converter, and illustrated power loss and odds for effectiveness with active PFC circuit and no bridge topology in the high frequency operation.
These improve the benefit that produces and are shown that cause the operation of high efficiency transducer, total big or small minimizing of engine control system surpasses 50%, greatly reduced component count, and reduced system cost and research and development time.
The advanced packing of disclosed power factor power topological sum will help engineers to solve new power management challenge in the weather control application system.Thus, provide engineering challenge that the variable speed electric motors, particularly of the energy of following the power factor compensation standard-effectively drives by simple and cost effectively solves.
Although the present invention describes with reference to specific embodiment, many changes and improvements and other purposes will be easily conventionally known to one of skill in the art.Therefore, the present invention should not be limited to specific disclosure herein.
Claims (according to the modification of the 19th of treaty)
1. no bridge regenerative circuit boost converter comprises:
Boost inductor, this boost inductor have first end that is connected to first ac input end and second end that is connected to first contact, and described first contact is limited between first terminals of the anode of first diode and first switch;
Second terminals of first switch, these second terminals are connected to conllinear;
The parallel circuits of electric capacity and load end, this parallel circuits are connected between the negative electrode and described conllinear of described first diode;
The series circuit of second diode and second switch, this series circuit are connected between the negative electrode and described conllinear of described first diode;
Second ac input end, this second ac input end is connected to second contact, and described second contact is limited between the anode and second switch of described second diode;
Another boost inductor, this another boost inductor are connected between described second ac input end and described second contact; And
Control input, this control input are connected to be used to controlling first and second switches to provide power factor correction according to the power that is applied to described load end;
Described boost converter also comprises third and fourth diode, and the anode of described third and fourth diode is connected with described conllinear respectively, and the negative electrode of described third and fourth diode is connected to described first and second ac input ends respectively.
2. no bridge regenerative circuit boost converter according to claim 1, this no bridge regenerative circuit boost converter also comprise makes described control circuit, described first and second switches and the interconnected resistor network of described conllinear.
3. no bridge regenerative circuit boost converter according to claim 1, wherein each described first and second switch has a pair of main electrical scheme end, and this main electrical scheme end is connected to described conllinear respectively and is connected in described first and second contacts correspondingly a contact; Each described first and second switch also has the gate terminal that is connected to described control circuit.
4. no bridge regenerative circuit boost converter according to claim 3, this no bridge regenerative circuit boost converter also comprise makes described control circuit, described gate terminal and the interconnected resistor network of described conllinear.
5. no bridge regenerative circuit boost converter according to claim 1, this no bridge regenerative circuit boost converter also comprises the control circuit that is connected to described control input, and described control circuit is controlled described first and second switches in response to the electric current in described first and second switches.
6. no bridge regenerative circuit boost converter according to claim 1, this no bridge regenerative circuit boost converter also comprises the control circuit that is connected to described control input, and described control circuit is controlled described first and second switches in response to the output voltage at the voltage of described first and second ac input ends and load end two ends.
7. no bridge regenerative circuit boost converter according to claim 6, wherein said control circuit is responded to the no-voltage at described ac input end two ends.
8. no bridge regenerative circuit boost converter according to claim 1, wherein said first and second switches are insulated gate bipolar transistor.
9. no bridge regenerative circuit boost converter comprises:
Boost inductor, this boost inductor have first end that is connected to first ac input end and second end that is connected to first contact, and described first contact is limited between first terminals of the anode of first diode and first switch;
The parallel circuits of electric capacity and load end, described parallel circuits are connected between the negative electrode and described conllinear of described first diode;
The series circuit of second diode and second switch, this series circuit is connected to the negative electrode of described first diode;
Second ac input end, this second ac input end is connected to second contact, and described second contact is limited between first terminals of the anode of second diode and second switch;
Another boost inductor, this another boost inductor are connected between described second ac input end and described second contact; And
The control input, this control input is connected for controlling first and second switches to provide power factor correction according to the power that is applied to described load end;
Second terminals of wherein said first and second switches are connected to the induction by current line, and described induction by current line is connected to described conllinear successively via shunt resistance.
10. no bridge regenerative circuit boost converter according to claim 9, this no bridge regenerative circuit boost converter also comprises respectively third and fourth diode with described first and second switch in parallel, and the negative electrode of described third and fourth diode is connected to corresponding described first and second contacts.
11. no bridge regenerative circuit boost converter according to claim 10, the anode of wherein said third and fourth diode is connected to conllinear.
12. no bridge regenerative circuit boost converter according to claim 9, this no bridge regenerative circuit boost converter also comprises the control circuit that is connected to described control input, and described control circuit is controlled described first and second switches in response to the electric current in described first and second switches.
13. no bridge regenerative circuit boost converter according to claim 9, this no bridge regenerative circuit boost converter also comprises the control circuit that is connected to described control input, and described control circuit is controlled described first and second switches in response to the output voltage at the voltage of described first and second ac input ends and load end two ends.
14. no bridge regenerative circuit boost converter according to claim 13, wherein said control circuit is responded to the no-voltage at described ac input end two ends.
15. no bridge regenerative circuit boost converter according to claim 9, wherein said first and second switches are insulated gate bipolar transistor.
16. no bridge regenerative circuit boost converter according to claim 9, the anode of wherein said third and fourth switch is connected to described conllinear.
17. no bridge regenerative circuit boost converter according to claim 9, this no bridge regenerative circuit boost converter also comprises the control circuit that is connected to described control input, and wherein said control circuit is controlled described first and second switches in response to the voltage on the described line of induction and the described conllinear.
Claims (28)
1. no bridge regenerative circuit boost converter comprises:
Boost inductor, this boost inductor have first end that is connected to first ac input end and second end that is connected to first contact, and described first contact is limited between first terminals of the anode of first diode and first switch;
Second terminals of first switch, these second terminals are connected to conllinear;
The parallel circuits of electric capacity and load end, this parallel circuits are connected between the negative electrode and described conllinear of described first diode;
The series circuit of second diode and second switch, this series circuit are connected between the negative electrode and described conllinear of described first diode;
Second ac input end, this second ac input end is connected to second contact, and described second contact is limited between the anode and second switch of second diode; And
Control circuit, this control circuit are connected for controlling first and second switches to provide power factor correction according to the power that is applied to described load end.
2. no bridge regenerative circuit boost converter according to claim 1, wherein said first and second switches are insulated gate bipolar transistor.
3. no bridge regenerative circuit boost converter according to claim 1, this no bridge regenerative circuit boost converter also comprises another boost inductor, this another boost inductor is connected between described second ac input end and described second contact.
4. no bridge regenerative circuit boost converter according to claim 1, this no bridge regenerative circuit boost converter also comprises respectively third and fourth diode with described first and second switch in parallel, and the negative electrode of described third and fourth diode is connected to corresponding described first and second contacts.
5. no bridge regenerative circuit boost converter according to claim 4, wherein each described insulated gate bipolar transistor has a pair of main electrical scheme end, and described main electrical scheme end is connected to described conllinear respectively and is connected in described first and second contacts correspondingly a contact; Each described insulated gate bipolar transistor also has the gate terminal that is connected to described control circuit.
6. no bridge regenerative circuit boost converter according to claim 5, this no bridge regenerative circuit boost converter also comprise makes described control circuit, described gate terminal and the interconnected resistor network of described conllinear.
7. no bridge regenerative circuit boost converter according to claim 4, wherein said control circuit is controlled described first and second switches in response to the electric current in described first and second switches.
8. no bridge regenerative circuit boost converter according to claim 4, wherein said control circuit are in response to the output voltage at the voltage of described first and second ac input ends and described load end two ends and control described first and second switches.
9. no bridge regenerative circuit boost converter according to claim 8, wherein said control circuit is responded to the no-voltage at described ac input end two ends.
10. no bridge regenerative circuit boost converter according to claim 4, the anode of wherein said third and fourth diode is connected to described conllinear.
11. no bridge regenerative circuit boost converter according to claim 1, wherein said control circuit is controlled described first and second switches in response to the electric current in described first and second switches.
12. no bridge regenerative circuit boost converter according to claim 1, wherein said control circuit are in response to the output voltage at the voltage of described first and second ac input ends and described load end two ends and control described first and second switches.
13. no bridge regenerative circuit boost converter according to claim 12, wherein said control circuit is responded to the no-voltage at described ac input end two ends.
14. no bridge regenerative circuit boost converter according to claim 1, this no bridge regenerative circuit boost converter comprises also respectively and third and fourth diode of described first and second switch in parallel that the negative electrode of described third and fourth diode is connected to described first and second ac input ends respectively.
15. no bridge regenerative circuit boost converter according to claim 14, this no bridge regenerative circuit boost converter also comprises another boost inductor, and this another boost inductor is connected between described second ac input end and described second contact.
16. no bridge regenerative circuit boost converter according to claim 1, second terminals of wherein said first and second switches are connected to the line of induction, and the described line of induction is connected to described conllinear successively via shunt resistance.
17. no bridge regenerative circuit boost converter according to claim 16, the anode of wherein said third and fourth diode is connected to conllinear.
18. no bridge regenerative circuit boost converter according to claim 16, wherein said control circuit is controlled described first and second switches in response to the voltage on the described line of induction and the described conllinear.
19. a booster type power circuit that is used to provide VD comprises:
First and second semiconductor switchs, described first and second semiconductor switchs are coupling between each incoming line and the common tie point, are provided at the incoming line two ends from the AC-input voltage of AC power;
First and second diodes, described first and second diodes and switch series coupled separately;
Third and fourth diode, described third and fourth diode is connected across on separately the switch with the relation that is connected with separately switch afterflow,
Inductance, described inductance coupling high is at least one incoming line;
Controller, described controller comes the control switch ON time by providing pulse duration to control signal to each switch;
Described thus controller is opened at least one switch so that inductive energy storage at the positive half period of alternating voltage, and closes at least one switch so that the energy of storing in the inductance offers additional load through one in one in described first and second diodes and third and fourth diode; And
Described controller opens at least one switch between the negative half-cycle of alternating voltage so that inductive energy storage, and closes at least one switch so that the energy of storing in the inductance offers additional load through one in one in described first and second diodes and third and fourth diode; Wherein
Described controller imports to determine the connection and the shut-in time of the pulse of the control signal of pulse width modulation in every half period of alternating voltage based at least one, and does not need to respond to the input current from AC power;
Control the connection of described pulse and shut-in time to regulate described output voltage and the power factor correction of described AC-input voltage is provided.
20. circuit as claimed in claim 19, described circuit also comprises testing circuit, described testing circuit provides one to be input to described controller to determine the beginning of the every half period of described alternating voltage, and be illustrated in the beginning cycle very first time afterwards of described every half period wherein said turn-on time, and the described shut-in time represents that beginning second time cycle afterwards of described half period, described pulse have the pulse duration by the difference decision of described turn-on time and described shut-in time; And select described turn-on time and described shut-in time so that power factor correction to be provided.
21. circuit according to claim 20, the described testing circuit that wherein is used for the beginning of definite every half period comprises zero staggered voltage detecting circuit.
22. circuit according to claim 21 wherein comprises the output of described zero staggered voltage detecting circuit to one of them of the described input of described controller.
23. circuit according to claim 19, wherein at least one input to described controller comprises the voltage relevant with the output voltage of described circuit, regulates described output voltage by controlling described pulse duration thus in the predetermined adjustment scope.
24. circuit according to claim 23, wherein relevant with described output voltage voltage is obtained at the bleeder circuit two ends.
25. circuit according to claim 23, wherein said at least one input comprises the signal of the beginning of the every half period that is used for definite described AC-input voltage, and described controller provides the signal of the pulse width modulation with the described turn-on time that is determined and shut-in time so that the power factor correction of described AC-input voltage to be provided.
26. circuit according to claim 19, wherein said switch comprises insulated gate bipolar transistor.
27. circuit according to claim 19, described circuit also comprises output capacitance, and described output voltage is obtained at described output capacitance two ends.
28. circuit according to claim 19, wherein said inductance comprise first and second inductors that place described every incoming line.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US66695005P | 2005-03-31 | 2005-03-31 | |
| US60/666,950 | 2005-03-31 | ||
| US11/392,039 | 2006-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101151791A true CN101151791A (en) | 2008-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800105825A Pending CN101151791A (en) | 2005-03-31 | 2006-03-30 | Bridgeless boost converter with PFC circuit |
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| Country | Link |
|---|---|
| JP (1) | JP2008535460A (en) |
| CN (1) | CN101151791A (en) |
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