CN103151927A - High-power DC voltage converter - Google Patents
High-power DC voltage converter Download PDFInfo
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- CN103151927A CN103151927A CN2012105991251A CN201210599125A CN103151927A CN 103151927 A CN103151927 A CN 103151927A CN 2012105991251 A CN2012105991251 A CN 2012105991251A CN 201210599125 A CN201210599125 A CN 201210599125A CN 103151927 A CN103151927 A CN 103151927A
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- electric switchgear
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1584—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0032—Control circuits allowing low power mode operation, e.g. in standby mode
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1584—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
- H02M3/1586—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel switched with a phase shift, i.e. interleaved
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Inverter Devices (AREA)
Abstract
The invention relates to an electrical switch device comprising a boost converter switch circuit. The boost converter switch circuit includes an inductor and a first switch (T1), and is used for generating an output voltage (UA) that is higher than an input voltage (UE). The electrical switch device is characterized by being equipped with a second switch (T2) which is used for guiding the inductor in the boost converter switch circuit to genrate currents (iE, iL) when the first switch (T1) is turned off.
Description
Technical field
The present invention relates to a kind of electric switchgear with booster converter switching circuit, this booster converter switching circuit has inductance and the first switch, and it is for generation of the output voltage higher than input voltage.
Background technology
This kind electric switchgear is used to low-voltage, for example approximately the variable battery voltage of 200V rises to the 500V standard motor voltage that the three-phase alternating current CD-ROM drive motor in electric automobile can be used.Disclose in the German translation of patent application DE11 2,005 003041 T5 and be used for to this kind booster converter switching circuit of electric automobile for induced current.Use booster converter herein, it can also can not only transfer to motor from battery with electric current as buck converter, but also can reverse transfer.Combine boost-and the switching circuit of buck converter basically formed by an inductance and two transistors with parallel diode.Switching circuit is as booster converter or work depends on how to control two transistors as buck converter.Depending on motor is in motor and is in motor operation or is in generator operation (for example when electric automobile is braked), and this switching circuit not only can uprise voltage, but also can be with the voltage step-down.The problem of this kind booster converter switching circuit is in principle, in the situation that power output is high, produces very large loss power when the transistor of booster converter switching circuit is connected, and this makes needs corresponding bothersome ground cold switch circuit.
German patent application DE10 2,006 005 853 A1 include the switching process of loss problem.Wherein described the switch power electronic installation spare that input voltage is converted to output voltage, it comprises an inductance and a plurality of switch.In order to reduce the switching loss in the parts of switch networking, at least one in described switch only is transformed in no-voltage situation in a state.At this, use alternatively switch networking parts when boosting inverter or decompression transformation.The switching circuit of describing in this application comprises a plurality of switches and capacitor, and this makes it correspondingly more expensive.
US Patent No. 8,026 discloses the circuit of controlling electric drive when on-position in 681B2.
Summary of the invention
Task of the present invention is to propose a kind of switching device with the booster converter switching circuit, and it has the least possible electric component and switching device also is being defined as minimum with switching loss during for high maximum power output.
According to the present invention, this task is solved by claim 1.Favourable execution mode of the present invention is drawn by dependent claims and accompanying drawing.The present invention is particularly suited for for electric automobile, can make switching loss minimum at this, thereby in order to makes current source stand under load and improve the working range of electric automobile necessarily.In these external such vehicles, especially the space requirement due to the power electric device that occurs with battery pack or fuel cell form is large, therefore for power electric device existence space seldom, thereby make the cramped construction of required power electronic installation, however, though described power electric device still can reliably working and also can not reach thermoae limit under large current conditions.Electric switchgear of the present invention is based on traditional booster converter switching circuit, and it is with the first diode on an inductance, one first switch and a through-flow direction and an energy storage capacitor.The shortcoming of this kind booster converter is, can produce very large switching loss when connecting the first switch, and this can significantly damage the efficient of electric switchgear.Particularly high pressure-and during high-power applications, for example it is such with the necessary situation of the electric automobile of 100KW motor for driving, and large switching loss can occur.Therefore design according to the present invention is as follows, and a second switch that is used for guiding induced current when the first switch turn-offs is set in the booster converter switching circuit.In this way and method, by the corresponding control for two switches, can make the switching loss of the first switch drop to minimum.Arrange in addition as followsly with advantageous manner, that is, give diode and the capacitor of the first switch in parallel ground configuration one on the cut-off direction, configure in parallel diode on a through-flow direction for second switch.By this kind electric switchgear, not only can reduce the switching loss of the first switch, also can reduce the turn-off power loss of the first switch.Reduce in the following way the switching loss of the first switch with the capacitor of the first switch in parallel, that is, the voltage rising speed in the first switch obviously reduces, and the electric current fall off rate is constant.Thus, by the capacitance design of the capacitor that arranges with the first switch in parallel, can control and greatly reduce turn-off power loss.In order effectively to reduce the switching loss of the first switch, capacitor discharges as far as possible fully during the first switch connection.This special size that can pass through the inductance of booster converter designs and realizes by means of the controlled handoff procedure of second switch.Suitable dimension design by above-mentioned electrical structure and case and for the control of two switches can obviously reduce the turn-off power loss of booster converter and connect loss, is reduced to minimum and efficient is obviously improved thereby produce heat is produced.
As follows with the advantageous manner design in addition, so control electric switchgear, the first switch is turned off first constantly, the diode that is arranged in parallel with second switch is in the second conducting constantly, second switch is connected constantly the 3rd, and second switch is turned off the 4th constantly, and the first switch is switched on the 5th constantly, wherein, this whole switching process periodically repeats.Utilize switch circulation of the present invention loss power can be reduced to minimum, this is that this first switch always can be converted because when the first switch only need guide little electric current.The first switch is connected when switching process begins and stored energy is realized in the inductance of booster converter switching circuit.Electric current linear growth in inductance thus.In first moment, the first switch turn-offs, and wherein, produces minimum turn-off power loss based on the electric capacity that is arranged in parallel.This electric capacity prevents from must connecting high voltage at the first switch blocking interval, because the electric capacity that it can be arranged in parallel guiding.In second moment, the diode current flow on the conducting direction of second switch, the energy in inductance is delivered to the output of circuit.In this way, the electric current in inductance descends, and preferably constantly reaches 0 value the 3rd.Second constantly and the 3rd constantly between, the second diode that is arranged in parallel with second switch is connected and from the 3rd electric current of receiving inductance device constantly losslessly, this electric current from the 3rd constantly to flow in the other direction.The 4th constantly, second switch is turned off and the making with the capacitor discharge of the first switch in parallel setting and after this transforming to and additional the first diode that is arranged in parallel of the first switch as the electric current of negative sense now of inductance take the minimum turn-off loss.In the 5th moment, induced current reaches 0 value again, and in the 5th moment, the first switch of connecting constantly in the 4th moment and the 5th is used to guide the induced current of increase from the 5th moment losslessly, makes thus switch periods start anew.In this way and method, switching loss can be restricted to minimum.
Design is as follows in another preferred structure scheme of the present invention, and namely structure has the power electric device of a plurality of electric switchgears that are arranged in parallel.If the power that sends is in wider fluctuation, this kind of a plurality of electric switchgears of the present invention electric switchgear in parallel will make efficient higher.Especially for electric automobile, be in lower-speed state and be in fast state and compare the power that need to obviously reduce.Can raise the efficiency in the following manner in this large-scale situation of power stage, namely, be connected in parallel a plurality of electric switchgears and only use or a small amount of electric switchgear in the low-power situation, and the electric switchgear that preferred use all is connected in parallel during high power.The quantity of the electric switchgear that therefore, effectively connects depends on the electrical power that customer is required.The strategy that turns on and off of electric switchgear is stored in logical circuit at this, and described logical circuit is controlled turning on and off of the required electric switchgear that develops.
As follows according to design in another organization plan of the present invention, namely, in the situation that power stage is very little, described power stage self makes a unique electric switchgear fully loaded, improves the first switch in electric switchgear and the switching frequency of second switch.If power stage is so little, make even all full loads no longer of a unique electric switchgear, be significant according to organization plan of the present invention.Minimum in order to make in the loss of this appearance, can change switching frequency according to the load condition of the switch in the electric switchgear that changes unique remainder in this case.Power is lower, and switching frequency is higher.In this way and method, can reduce the inner loop electric current that is produced by inductance in the booster converter switching circuit and reduce thus to reduce switching loss when little load.
As follows with the advantageous manner design in addition, that is, electric switchgear is always spent divided by electric switchgear quantity phase shift ground operation with 360.The above-mentioned symmetrical phase shift of the electric switchgear that is connected in parallel produces extra high efficient.As follows in this additional designs, that is, phase shift changes and is adjusted to 360 degree divided by remaining electric switchgear quantity when electric switchgear turn-offs.Even that when one or more electric switchgears turn-off, remaining electric switchgear still can symmetrical phase shift ground work in this way with method is guaranteed.Required phase shift conducts interviews in this can be stored in a form according to required electric switchgear and according to the electric switchgear of working.Can also calculate in real time current required phase shift according to just in time required effective electric switchgear by computer.Can reduce by this measure power electric device of the present invention the input and output capacitor current fluctuation and can reduce loss equally thus.
Description of drawings
Next illustrate in greater detail and describe the present invention according to a plurality of accompanying drawings.Diagram:
Fig. 1 is according to the booster converter switching circuit of background technology,
Fig. 2 is according to background technology, power electric device that have a plurality of booster converters that are arranged in parallel,
The change curve of the induced current of power electric device in Fig. 3 Fig. 2,
Fig. 4 electric switchgear with the switching loss that reduces of the present invention,
The turn off process of the first switch in Fig. 5 Fig. 4,
Fig. 6 is electric current and the change in voltage curve when the high-power output according to the electric switchgear of Fig. 4,
Fig. 7 is according to electric current and the change in voltage curve of electric switchgear when low-power is exported of Fig. 4,
Fig. 8 is according to power electric device of the present invention, and it has a plurality of that be arranged in parallel, electric switchgears of the present invention of switching loss with reduction and the inverter that is used for controlling electric drive motor that connects at output, and
The impact of the variation of Fig. 9 switching frequency on induced current.
Embodiment
Figure 1 illustrates the booster converter switching circuit, it is by relatively low input voltage U
EGenerate higher output voltage U
ADescribed booster converter switching circuit is become by inductance, diode and the energy storage capacitor of coil form substantially.Can be with described inductance swinging earth by means of bipolar transistor, MOSFET or IGBT.When switch opens, inductance attempts to keep electric current.Voltage raises thus, until it surpasses the output voltage U on capacitor
AAnd till diode current flow.After this flow unchangeably and charge to capacitor at the first moment electric current.This moment inductance field weakening, its energy is passed to capacitor and may be connected in the load in downstream.The problem of this kind circuit is, transistor must be connected under load, and this will cause corresponding switching loss.
Fig. 2 shows the power electric device with the booster converter that is connected in parallel in Fig. 1, compares with the circuit in Fig. 1, and it can be with the less larger power of loss conversion.The advantage of the power electric device in Fig. 2 is, input current i
EObviously gently and input thus-and the loss of output capacitor can minimize.For this reason, figure 3 illustrates the change curve of input current, wherein, input current i
EBe resultant current, it comprises little ripple, and is electric current in single inductance at the induced current shown in lower area.Phase shift parallel circuits by three booster converters in Fig. 2 is clearly shown that and induced current i
ERelevant mild operation.
Fig. 4 show switching loss with reduction according to improved booster converter of the present invention.Booster converter according to the present invention substantially also comprises inductance except input capacitor and output capacitor, with the first switch T of IGBT or mosfet transistor form
1With same second switch T with IGBT or mosfet transistor form
2The first switch T
1Have with Fig. 1 in the essentially identical task of switch.Second switch T
2Be used for switching loss is minimized.In addition, second switch T
2Be included in the additional diode D that is connected in parallel on through-flow direction
2One stepup transformer diode D
1The cut-off direction on the first switch T
1Be connected in parallel and a capacitor C additionally
1With the first switch T
1Be connected in parallel.But alternatively, this single capacitor can be become by two minutes capacitors, and its mode is, first minute capacitor and diode D
1Parallel connection, second minute capacitor and diode D
2Be arranged in parallel, referring to Fig. 8.Capacitor has reduced the first switch T in the following way
1Turn-off power loss, i.e. the first switch T
1On voltage rising speed obviously reduce, and the electric current decrease speed is constant.Figure 5 illustrates the transistorized voltage U of booster converter during turn off process
TCurrent i with the booster converter capacitor
TChange curve.Arrow on the capacitor C direction should represent it is how can be by the capacitance impact of capacitor that voltage raises.What voltage raise makes gently by the booster converter transistor T
1On voltage U
TAnd current i
TThe switching loss that causes reduces.By for capacitance C
1Corresponding adjustment, make the first switch T
1On turn-off power loss greatly reduce.
In order to reduce the first switch T
1The connection loss, the capacitor C of booster converter
1At the first switch T
1Discharge as far as possible fully during connection.By the inductance of appropriate size and by means of the second electronic switch T
2Realize this discharge.In order to make switching loss minimum, the circuit in Fig. 4 is worked as follows.At first connect the first switch T
1, the energy that is stored in inductance makes induced current i
LLinear increasing.Referring to Fig. 5, at the first moment t
1, the first switch T
1Turn-off, wherein, by the capacitor C that is connected in parallel
1Make turn-off power loss minimum.At the second moment t
2, additional diode D
2Conduction, and carry out the energy release to customer of inductance, make thus induced current i
LReduce and at the 3rd t constantly
3Reach 0 value.At the second moment t
2With the 3rd moment t
3Between, second switch T
2Connect losslessly.So second switch T
2Receive induced current i
L, it is from the 3rd moment t
3Rise in the opposite direction and flow.At the 4th moment t
4, second switch T
2With minimum turn-off power loss turn-off and this moment negative sense induced current i
LMake the capacitor C that is connected in parallel on booster converter
1Discharge and then be transformed into booster converter diode D
1After this at the 5th moment t
5, induced current i
LReach 0 value.The 5th moment t
5, at the 4th moment t
4With the 5th moment t
5Between the first switch T of connecting losslessly
1Receive induced current i
LAnd whole switch circulation can restart.
Induced current i when for this reason, figure 6 illustrates electric switchgear according to the present invention at Fig. 4 with the aforementioned switches periodic duty
LThe curent change curve and the gate voltage U on the first switch
GS1, the gate voltage U on second switch
GS2Gate voltage U with the booster converter diode
DS1The change in voltage curve.During high load capacity, the circuit with high-output power produces the switching loss of less.
Figure 7 illustrates according to the electric switchgear of the present invention of Fig. 4 power output duration of work with obvious reduction, induced current i
LThe curent change curve and the U on the first switch
GS1, the U on second switch
GS2U with the booster converter diode
DS1The change in voltage curve.When power output reduces, produce circular current within switching circuit, it causes extra loss and has reduced thus the efficient of electric switchgear in Fig. 4.
Based on this reason, the electric switchgear of Fig. 4 has been carried out following improvement, make it multiplely in parallel with power electric device as shown in Figure 8.Therefore, the power electric device in Fig. 8 comprises at least three electric switchgears in the Fig. 4 that is connected in parallel, and wherein, inverter INV is connected to output voltage U
AOn, it provides energy for electric drive motor M.This electric drive motor M can be the electric drive motor in electric automobile for example.The quantity of the electric switchgear that is connected in parallel depends on maximum electrical power and the output power range connected.Output power range is larger, and more electric switchgears that is connected in parallel are significant.In this way and method, can cover larger power bracket with high efficient.
At this, according to the power of need output, only there is the electric switchgear of so most amounts initiatively to connect, make efficient reach the induced current i of the electric switchgear of optimal value and connection
LConsistent with the change curve in Fig. 6.The switching strategy according to desired power output of electric switchgear is stored in logical circuit, and described logical circuit turns on and off respective branch.
However, what can also realize is that required power reduces on degree ground like this, makes unique electric switchgear be fully loaded with self no longer including meaning.In this case, the first switch T in Last electric switchgear
1With second switch T
2Switching frequency can change according to load condition, thereby in order to make circular current minimum.At this, the further reduction of power demand causes switching frequency to rise.Figure 9 illustrates frequency shift to induced current i
LImpact.In addition, also show U on the first switch
GS1, the U on second switch
GS2U with the booster converter diode
DS1The change in voltage curve.
When whole electric switchgears all were used, the phase shift between each electric switchgear should be defined as φ=360 divided by the quantity of required electric switchgear.When reducing due to power demand when closing power-down switching device, logical circuit recomputates phase shift with turn-offing to synchronize, and is that φ=360 are divided by the quantity of the residual electricity switching device of connection now thereby make phase shift.By what symmetrical phase shift guaranteed be, the electric current line degree in input capacitor and output capacitor is minimum.In this way with method limitation loss effectively.
The Reference numeral table
U
EInput voltage
U
AOutput voltage
i
EInduced current
i
LInduced current
T
1The booster converter transistor
T
2Extra transistor
D
2Additional diode
D
1The booster converter diode
C
1The booster converter capacitor
i
TElectric current in the booster converter transistor
U
TVoltage on the booster converter transistor
U
GS1Change in voltage curve on the booster converter transistor
U
GS2Change in voltage curve on extra transistor
U
DS1Change in voltage curve on the booster converter diode
t
1The transistorized shutoff of booster converter constantly
t
2The additional diode conducting
t
3Induced current flows through extra transistor
t
4Extra transistor is turn-offed
t
5Induced current flows through the booster converter transistor
The INV inverter
The M electric drive motor
The t time.
Claims (10)
1. electric switchgear, it comprises the booster converter switching circuit, described booster converter switching circuit has inductance and the first switch (T
1), described electric switchgear is for generation of than input voltage (U
E) high output voltage (UA
), it is characterized in that, second switch (T is set
2), be used for as described the first switch (T
1) guide the induced current (i in described booster converter switching circuit when turn-offing
E, i
L).
2. electric switchgear according to claim 1, is characterized in that, one first diode (D
1) ending on direction and a capacitor (C
1) and described the first switch (T
1) parallel connection, and one second diode (D
2) on through-flow direction with described second switch (T
2) parallel connection.
3. electric switchgear according to claim 2, is characterized in that, described electric switchgear is controlled like this, makes at the first moment (t
1), described the first switch (T
1) turn-off, at the second moment (t
2), with described second switch (T
2) described the second diode (D of being arranged in parallel
2) conducting, at the 3rd moment (t
3), described second switch (T
2) connect, at the 4th moment (t
4), described second switch (T
2) turn-off, at the 5th moment (t
2), described the first switch (T
1) connect, wherein, whole switching process periodically repeats.
4. power electric device, it has the described electric switchgear of any one in a plurality of according to claim 1 to 3, and described electric switchgear is arranged in parallel.
5. power electric device according to claim 4, is characterized in that, only connected for the required electric switchgear of power stage by the power of described switching device output according to need.
6. according to claim 4 or 5 power electric device, it is characterized in that: in the situation that power stage is very little, described power stage even makes a unique electric switchgear all can not be fully loaded with, and improves described the first switch (T in described electric switchgear
1) and described second switch (T
2) switching frequency.
7. the described power electric device of any one according to claim 4 to 6, is characterized in that, described electric switchgear is corresponding to 360 ° of quantity phase shift ground operations divided by described electric switchgear.
8. power electric device according to claim 7, is characterized in that, when an electric switchgear turn-offed, phase shift changed and is adjusted to 360 ° divided by the quantity of the residual electricity switching device of still working.
9. according to the power electric device of any one in aforementioned claim, it is characterized in that, be used for controlling described switch (T
1, T
2) and the switching strategy of the on off state of single electric switchgear control by microprocessor and/or FPGA.
10. according to the power electric device of any one in aforementioned claim, it is characterized in that, an inverter (INV) is connected on the output of described power electric device, is used for controlling the electric drive motor of the motor vehicle with electric drive (M).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011118334.9 | 2011-11-11 | ||
| DE102011118334 | 2011-11-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103151927A true CN103151927A (en) | 2013-06-12 |
| CN103151927B CN103151927B (en) | 2017-07-14 |
Family
ID=48145229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210599125.1A Expired - Fee Related CN103151927B (en) | 2011-11-11 | 2012-11-09 | High-power DC voltage converter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103151927B (en) |
| DE (1) | DE102012020620A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107070359A (en) * | 2017-03-22 | 2017-08-18 | 上海三菱电机·上菱空调机电器有限公司 | A kind of inverter air conditioner PAM loop control schemes |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013001564A1 (en) | 2012-02-29 | 2013-08-29 | Heidelberger Druckmaschinen Ag | Electrical circuit device for controlling electric drive motor mounted in motor car, calculates and switches appropriate number of upstream parallel power converters based on detected expected load |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080094861A1 (en) * | 2006-10-18 | 2008-04-24 | Texas Instruments Incorporated | Predictive duty ratio generating circuit and method for synchronous boost converters operating in PFM mode |
| US20090322293A1 (en) * | 2008-06-30 | 2009-12-31 | Infineon Technologies Austria Ag | Switching converter including a rectifier element with nonlinear capacitance |
| CN101753014A (en) * | 2008-12-11 | 2010-06-23 | 全汉企业股份有限公司 | Phase-shifting control method of a boost converter and implementing circuit |
| CN102035407A (en) * | 2009-09-30 | 2011-04-27 | 雅达电子国际有限公司 | Ac-dc switching power converters with frequency variation in response to load changes |
| CN201937495U (en) * | 2009-04-23 | 2011-08-17 | Abb研究有限公司 | Boost converter component and solar power station |
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| JP4839780B2 (en) | 2004-12-28 | 2011-12-21 | トヨタ自動車株式会社 | Motor control device and vehicle |
| DE102006005853A1 (en) | 2006-02-09 | 2007-08-23 | Robert Bosch Gmbh | Switching power supply with adaptive and lossless switching operations |
| US8026681B2 (en) | 2006-12-22 | 2011-09-27 | Heidelberger Druckmaschinen Ag | Safe electric braking device for printing presses and method of electrically braking an electric drive in a machine processing printing material |
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2012
- 2012-10-19 DE DE102012020620A patent/DE102012020620A1/en not_active Withdrawn
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080094861A1 (en) * | 2006-10-18 | 2008-04-24 | Texas Instruments Incorporated | Predictive duty ratio generating circuit and method for synchronous boost converters operating in PFM mode |
| US20090322293A1 (en) * | 2008-06-30 | 2009-12-31 | Infineon Technologies Austria Ag | Switching converter including a rectifier element with nonlinear capacitance |
| CN101753014A (en) * | 2008-12-11 | 2010-06-23 | 全汉企业股份有限公司 | Phase-shifting control method of a boost converter and implementing circuit |
| CN201937495U (en) * | 2009-04-23 | 2011-08-17 | Abb研究有限公司 | Boost converter component and solar power station |
| CN102035407A (en) * | 2009-09-30 | 2011-04-27 | 雅达电子国际有限公司 | Ac-dc switching power converters with frequency variation in response to load changes |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107070359A (en) * | 2017-03-22 | 2017-08-18 | 上海三菱电机·上菱空调机电器有限公司 | A kind of inverter air conditioner PAM loop control schemes |
| CN107070359B (en) * | 2017-03-22 | 2019-07-09 | 上海三菱电机·上菱空调机电器有限公司 | A kind of inverter air conditioner PAM loop control scheme |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102012020620A1 (en) | 2013-05-16 |
| CN103151927B (en) | 2017-07-14 |
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