CN1707932A - Electric power device for vehicle - Google Patents
Electric power device for vehicle Download PDFInfo
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- CN1707932A CN1707932A CN 200510076200 CN200510076200A CN1707932A CN 1707932 A CN1707932 A CN 1707932A CN 200510076200 CN200510076200 CN 200510076200 CN 200510076200 A CN200510076200 A CN 200510076200A CN 1707932 A CN1707932 A CN 1707932A
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Abstract
The invention discloses a vehicle power source device is provided with an DC/DC converter (4) having a high-frequency insulating transformer (6) that converts power from an overhead power line to DC power, and a CVCF inverter (1) that converts the DC power supplied from this DC/DC converter (4) to AC power; the AC power converted by this CVCF inverter (1) is supplied to equipment such as for on-board lighting.
Description
The cross reference of related application
The application requires the priority of the Japanese publication number of on June 8th, 2004 application for the Japanese patent application of the JP 2005-122787 of JP 2004-169330 and application on April 20th, 2005, and the full content of this patent application is included in this as a reference.
Technical field
The present invention relates to a kind of electric power device that is used for.
Background technology
In general, in rail vehicle, the main transformer changing device is installed, is used for providing alternating current (AC power) to motor, and vehicle power-supply unit, the illumination and/or the conditioner that are used in vehicle provide alternating current.
Vehicle power-supply unit with reference to a kind of routine of description of drawings.This figure is a kind of layout plan of vehicle power-supply unit of routine.
Conventional vehicle power-supply unit comprises CVCF (constant voltage constant frequency) inverter (inverter) 1, LC (inductance capacitance) filter 2, and insulating transformer (insulating transformer) 3.CVCF inverter 1 becomes the alternating current of three-phase 60Hz 440V to the power transfer from overhead power transmission line (overhead power line) (feeder line or supply lines), and described alternating current is offered LC filter 2.LC filter 2 is removed PWM (pulse-width modulation) harmonic wave by the three-phase alternating current of CVCF inverter 1 conversion, and the three-phase alternating current of low distortion is offered lighting equipment for vehicle and/or air regulator by insulating transformer 3.It is in order to prevent the lightning surge on the overhead power transmission line to be directly passed to for example vehicle-mounted lighting apparatus and to destroy described equipment that insulating transformer 3 is provided.
This vehicle power-supply unit of Gou Chenging can provide power supply to equipment such as for example vehicle-mounted lighting devices in this way, can stop simultaneously lightning surge for example directly to propagate into equipment such as vehicle-mounted lighting device.An example of this vehicle power-supply unit has disclosed in Japanese Patent Application Publication 2003-47245.
But,, use the core (core) for example be used to guarantee enough magnetic flux densities, make the unlikely magnetic saturation that core takes place under the low frequency of 60Hz for insulating transformer 3, thereby the suitable weight and volume is big of this core.For the equipment of railroad vehicle, especially need to reduce weight and volume, therefore need to be improved in this respect.
Summary of the invention
Thereby one object of the present invention is to provide a kind of new electric power device that is used for, and makes it possible to achieve reducing of size.
Above-mentioned purpose utilizes following structure of the present invention to realize.Particularly, can realize by following feature is provided: inverter is used for direct current is converted to high-frequency alternating current; High frequency transformer makes the alternating current that provides from described inverter by electric insulation whereby; The cells D C/DC converter of a plurality of small-sized integrative-structures, its unit module is a rectifier, is used for the high-frequency alternating current that provides from described high frequency transformer is converted to direct current; And the CVCF inverter, be used for the described direct current that provides from described a plurality of DC/DC converters is transformed into alternating current; The input side of wherein said a plurality of cells D C/DC converters is connected in series, and the outlet side of described a plurality of cells D C/DC converters is connected in series or is connected in parallel or contact/is connected in parallel.
In addition, above-mentioned purpose can realize by following feature is provided: have a plurality of cells D C/DC converters of high-frequency insulation transformer, wherein by means of described a plurality of cells D C/DC converters the power converter of overhead power transmission line is become direct current; And the CVCF inverter, be used for the direct current that provides from these cells D C/DC converter is transformed into alternating current.
In addition, above-mentioned purpose can realize by following feature is provided: have the DC/DC converter of high-frequency insulation transformer, be used for the power converter of overhead power transmission line is become direct current; And the CVCF inverter, be used for the direct current that is provided by described DC/DC converter is transformed into alternating current.
In addition, above-mentioned purpose can realize by a kind of vehicle power-supply unit is provided: described vehicle power-supply unit comprises: the inverter that is used for DC power supply is transformed into high-frequency ac power; High frequency transformer makes the described AC power that provides from described inverter by electric insulation whereby; The cells D C/DC converter of small-sized integrative-structure, its unit module is a rectifier, is used for the high-frequency ac power that provides from described high frequency transformer is transformed into DC power supply; The DC/AC converter is used for the described DC power supply that provides from described a plurality of cells D C/DC converters is transformed into AC power; And the unit power converter cells of a plurality of integrative-structures, its unit module is a described cells D C/DC converter and described DC/AC converter, the output of wherein said a plurality of unit power converter cells is connected in series, the operation of described a plurality of unit power converter cells excute phase difference.
Description of drawings
In conjunction with the drawings referring to following detailed description, the present invention may be better understood, thereby can easily to the present invention a complete understanding be arranged, and other advantage of the present invention as can be seen, in the accompanying drawings:
Fig. 1 is the layout plan of the vehicle power-supply unit of routine;
Fig. 2 is the layout plan according to the vehicle power-supply unit of the first embodiment of the present invention;
Fig. 3 is the layout plan of DC/DC converter shown in Figure 1;
Fig. 4 is the layout plan according to the vehicle power-supply unit of the second embodiment of the present invention;
Fig. 5 is the layout plan according to the DC/DC converter of the vehicle power-supply unit of second embodiment of the invention;
Fig. 6 is the figure of the conversion operations of expression inverter;
Fig. 7 is the layout plan according to the vehicle power-supply unit of the third embodiment of the present invention;
Fig. 8 is the layout plan according to the DC/DC converter of the vehicle power-supply unit of another improved example of the present invention;
Fig. 9 is set at layout plan under the situation on the printed circuit board (PCB) at the DC/DC converter according to the third embodiment of the present invention;
Figure 10 is the layout plan according to the unit power converter cells of the vehicle power-supply unit of the fourth embodiment of the present invention;
Figure 11 is the layout plan according to the vehicle power-supply unit of fourth embodiment of the invention;
Figure 12 is the figure according to the operation of the phase difference in the vehicle power-supply unit of the present invention;
Figure 13 is the figure according to the output voltage waveforms of the combination in the phase difference operation of the vehicle power-supply unit of fourth embodiment of the invention;
Figure 14 is the layout plan according to the cells D C/DC converter of vehicle power-supply unit of the present invention;
Figure 15 is the layout plan according to the vehicle power-supply unit of sixth embodiment of the invention;
Figure 16 is the layout plan according to the vehicle power-supply unit of seventh embodiment of the invention; And
Figure 17 is the improved example according to the vehicle power-supply unit of seventh embodiment of the invention.
Embodiment
Referring now to description of drawings one embodiment of the present of invention, in institute's drawings attached, among especially wherein Fig. 2 and Fig. 3, identical label is represented identical or corresponding parts.
(first embodiment)
Vehicle power-supply unit according to first embodiment of the invention is described with reference to the accompanying drawings.
Fig. 2 is the layout plan according to the vehicle power-supply unit of first embodiment of the invention.Fig. 3 is the layout plan according to the DC/DC converter of the vehicle power-supply unit of the first embodiment of the present invention.
Known increase along with frequency, insulating transformer 3 generally can be done to such an extent that weight is light and size is less.Thereby, in vehicle power-supply unit, as shown in Figures 2 and 3, temporarily convert overhead power transmission line to high frequency for example 50kHz by the inverter 5 in the DC/DC converter 4 according to the first embodiment of the present invention, after realizing insulation, by rectifier 7 rectifications by high frequency transformer 6.Utilize CVCF inverter 1 that the direct voltage by rectifier 7 rectifications is converted to three-phase alternating current.
Utilize the vehicle power-supply unit that constitutes in this way, can use the high-frequency insulation transformer, it can be made into little size, thereby the size of vehicle power-supply unit also can reduce.
(second embodiment)
Second embodiment according to vehicle power-supply unit of the present invention is described with reference to the accompanying drawings.Fig. 4 is the layout plan according to the vehicle power-supply unit of the second embodiment of the present invention.Fig. 5 is the layout plan according to the DC/DC converter of the vehicle power-supply unit of the second embodiment of the present invention.Fig. 6 represents the change action of inverter.In this explanation, when needs are distinguished identical parts, distinguish by means of add a subscript in the label back.
When in fact the vehicle power-supply unit according to the first embodiment of the present invention uses high-frequency insulation transformer 3 to make, discovery need be drawn out to high frequency, high pressure, high-power main circuit connection in the housing of DC/DC converter 4, if and discovery is inconsiderate to provide enough spaces between housing and wiring for the method for permanent wiring cable, then the heat that causes owing to the induction heating produces and may cause problem.For fear of the heating problem that the induction heating causes, must be in each case, for every type railroad vehicle standard, the design of carefully connecting up: this has caused for the worry that increases the device design expense.
Also find, utilize the vehicle power-supply unit according to the first embodiment of the present invention, DC/DC converter 4 need use the semiconductor element of the high voltage tolerance of the voltage that can bear overhead power transmission line; The semiconductor element of these high voltage tolerances is for example operated under the 50kHz at high switching rate, finds that therefore the heat that produces owing to switching losses is considerable, thereby solves the increase of the size of the required cooler (not shown) of this heating problem.
Promptly, when the vehicle power-supply unit as the first embodiment of the present invention uses high-frequency insulation transformer 3, finding increases owing to wiring problem makes design cost, and the cooler size that causes owing to the heating problem of semiconductor element increases, and the result makes the vehicle power-supply unit that in fact can not realize using the high-frequency insulation transformer.
In order to solve problem according to the vehicle power-supply unit of first embodiment of the invention, in vehicle power-supply unit according to the second embodiment of the present invention, DC/DC converter 4 is approximately 10kW by 4 all-in-one-piece capacity, voltage withstand capability is that the identical cells D C/DC converter 8 of 375V (comprises inverter 5, high-frequency insulation transformer 6 and rectifier 7) and CVCF inverter 1 and LC filter 2 formations.
In the vehicle power-supply unit that constitutes in this way, the positive input Pin1 of first module DC/DC converter 8a links to each other with overhead power transmission line with direct current reactor (reactor) by bow collector (pantograph).The negative input Nin1 of first module DC/DC converter 8a and the positive input Pin2 of the second cells D C/DC converter 8b link to each other.The negative input Nin2 of the second cells D C/DC converter 8b and the positive input Pin3 of the 3rd cells D C/DC converter 8c link to each other, and the negative input Nin3 of the 3rd cells D C/DC converter 8c and the positive input Pin4 of the 4th cells D C/DC converter 8d link to each other.The negative input Nin4 of the 4th cells D C/DC converter 8d links to each other with the wheel that links to each other with the minus side of overhead power transmission line.The positive output Pout1 of first module DC/DC converter 8a links to each other with the positive side of CVCF inverter 1, and the negative output Nout1 of first module DC/DC converter 8a links to each other with the positive output Pout2 of the second cells D C/DC converter 8b.The negative output Nout2 of the second cells D C/DC converter 8b links to each other with the positive output Pout3 of the 3rd cells D C/DC converter 8c, and the negative output Nout3 of the 3rd cells D C/DC converter 8c links to each other with the positive output Pout4 of the 4th cells D C/DC converter 8d.The negative defeated Nout4 of the 4th cells D C/DC converter 8d and the load of CVCF inverter 1 link to each other.The three-phase alternating current output of LC filter 2 and CVCF inverter 1 links to each other.
In the vehicle power-supply unit that constitutes in this way, 4 cells D C/DC converters 8 at first become high-frequency DC to the power conversions that provides from overhead power transmission line, provide it to CVCF inverter 1 then.CVCF inverter 1 converts the direct current that provides from cells D C/DC converter 8 to alternating current, and this alternating current is output to LC filter 2.LC filter 2 is removed the PWM harmonic wave from the three-phase alternating current by 1 conversion of CVCF inverter, the three-phase alternating current of low distortion is offered lighting equipment for vehicle and/or air regulator.
In the vehicle power-supply unit that constitutes in this way, cells D C/DC converter 8 integrally is made of as its unit module inverter 5, high-frequency insulation transformer 6 and rectifier 7.In cells D C/DC converter 8, inverter 5 becomes the overhead wire power conversions that provides from overhead power transmission line the alternating current of 50kHz high frequency.High-frequency insulation transformer 6 makes from the alternating current electric insulation of the 50kHz of inverter 5 outputs, then this power is offered rectifier 7.The alternating current of rectifier 7 rectification 50kHz is to convert thereof into direct current, so that output.
That is, when IGBT 9a conducting, also conducting of IGBT 9d, when IGBT 9a ended, IGBT 9d also ended.When IGBT 9b conducting, also conducting of IGBT 9c, when IGBT 9b ended, IGBT 9c also ended.
By means of this operation of inverter 5, from the square wave alternating-current voltage of inverter 5 output 50kHz.
In the vehicle power-supply unit that constitutes in this way, in rectifier 7, from the alternating current of the 50kHz of high-frequency insulation transformer 6 outputs by a kind of bridge architecture rectification of diode rectifier; After smmothing capacitor 11 voltages that process links to each other with output stage are level and smooth, output DC.
In the vehicle power-supply unit that constitutes in this way, from the electric power of overhead wire the input side of cells D C/DC converter 8 is and is connected in series, therefore do not need the switch element 9 (9a-9d) of cells D C/DC converter 8 to have the high pressure tolerance of the voltage that can tolerate overhead power transmission line, so can use the element of low pressure tolerance, low switch loss.Therefore, utilize vehicle power-supply unit, can reduce loss according to present embodiment.
In addition, in vehicle power-supply unit according to present embodiment, the assembled unit DC/DC converter 8 (8a-8d) by the problem of considering for example induction heating, can constitute vehicle power-supply unit with any required installed capacity or output voltage, therefore, except reducing loss, can also reduce cost.In addition, utilize vehicle power-supply unit,, can also realize reducing of size because can use high-frequency insulation transformer 6 to replace low frequency insulating transformer 3 according to present embodiment.
Thereby, utilize the vehicle power-supply unit that constitutes in this way, can realize reducing loss and size.
It should be noted that, in vehicle power-supply unit according to the second embodiment of the present invention, this embodiment is that example is illustrated with the alternating current of 50kHz, this is the frequency of the total losses minimum that obtains by experiment, therefore be best, because in the vehicle power-supply unit of this embodiment, can obtain to reduce cost, reduce loss and advantage reduced in size.Certainly select other a-c cycle, get final product so long as be higher than the alternating current of 10kHz.
(the 3rd embodiment)
Describe in detail according to the third embodiment of the present invention with reference to the accompanying drawings.Fig. 7 is the layout plan according to the vehicle power-supply unit of third embodiment of the invention.Fig. 8 is the layout plan according to the vehicle power-supply unit of another improved example of the present invention.Fig. 9 is set at layout plan under the situation on the printed circuit board (PCB) at the DC/DC converter according to the third embodiment of the present invention.Structurally identical with Fig. 2 parts are represented with identical label, and are omitted its further instruction.
In vehicle power-supply unit according to the third embodiment of the present invention, the direct current outlet side of the direct current outlet side of first module DC/DC converter 8a and the second cells D C/DC converter 8b is connected in series and constitutes first series circuit, and the direct current outlet side of the direct current outlet side of the 3rd cells D C/DC converter 8c and the 4th cells D C/DC converter 8d and second series circuit that is connected in series are connected in parallel.
In the vehicle power-supply unit that constitutes in this way, the positive output Pout1 of first module DC/DC converter 8a links to each other with the positive side of CVCF inverter 1.The negative output Nout1 of first module DC/DC converter 8a links to each other with the positive output Pout2 of the second cells D C/DC converter 8b.The negative output Nout2 of the second cells D C/DC converter 8b and the minus side of CVCF inverter 1 link to each other.The positive output Pout3 of the 3rd cells D C/DC converter 8c and the positive side of CVCF inverter 1 link to each other.The negative output Nout3 of the 3rd cells D C/DC converter 8c links to each other with the positive output Pout4 of the 4th cells D C/DC converter 8d.The negative output Nout4 of the 4th cells D C/DC converter 8d and the minus side of CVCF inverter 1 link to each other.
The vehicle power-supply unit shown in Figure 7 of Gou Chenging is to be especially favourable under the situation of 750V at overhead power transmission line voltage in this way.Consider the danger of the first series circuit possible capacity deficiency that only comprises a DC/DC converter 8a and the 2nd DC/DC converter 8b, second series circuit that is connected in parallel that comprises the 3rd DC/DC converter 8c and the 4th DC/DC converter 8d is provided.
In the vehicle power-supply unit that constitutes in this way, with respect to electric power from overhead power transmission line, the input side of cells D C/DC converter 8 is and is connected in series, and does not therefore need to make the switch element 9 (9a-9d) of cells D C/DC converter 8 have the high voltage withstand capability of the voltage that can bear overhead power transmission line: thereby can use the element of low pressure ability to bear and low switching loss.Thereby can reduce loss according to the vehicle power-supply unit of present embodiment.
In addition, in according to present embodiment of the present invention, because assembled unit DC/DC converter 8 can constitute the vehicle power-supply unit with any required installed capacity or output voltage by the problem of considering for example induction heating, therefore except reducing loss, can also reduce cost.In addition, because can use high-frequency insulation transformer 6 to replace low frequency insulating transformer 3, so the vehicle power-supply unit of present embodiment can also be realized reducing of size.
Thereby, utilize the vehicle power-supply unit that constitutes in this manner, can realize reducing cost, reduce loss and reduced in size.
Should be noted that the structure that is connected in parallel by the outlet side that adopts a DC/DC converter 8a to the four DC/DC converter 8d, can obtain identical advantage, as shown in Figure 8 by using required installed capacity and output voltage.By constitute inverter 5, high-frequency insulation transformer 6 and the rectifier 7 of DC/DC converter 8 on printed circuit board (PCB), this vehicle power-supply unit can also further reduce size, as shown in Figure 9.
(the 4th embodiment)
Describe in detail according to the fourth embodiment of the present invention with reference to the accompanying drawings.Figure 10 is the layout plan according to the unit power converter cells of the vehicle power-supply unit of fourth embodiment of the invention.Figure 11 is the layout plan according to vehicle power-supply unit of the present invention.Figure 12 is at the figure according to the operation of the phase difference in the vehicle power-supply unit of the fourth embodiment of the present invention.Figure 13 is in the oscillogram according to the output voltage of the combination of the phase difference operation of the vehicle power-supply unit of the fourth embodiment of the present invention.Structurally represent with identical label to the identical parts of Fig. 9, and omit its further instruction with Fig. 2.
According to one of typical feature of the vehicle power-supply unit of fourth embodiment of the invention be, by means of the alternating voltage output unit (device) that low distortion is provided, replacement is at the LC filter 2 of the vehicle power-supply unit use of first-Di, three embodiment, compare with first to the 3rd embodiment, further reduced size.
According to the vehicle power-supply unit of the fourth embodiment of the present invention, comprise 12 unit converters, promptly unit converter 10 is to unit converter 21.Unit converter 10 comprises cells D C/DC converter 8 and DC/DC converter 22 to unit converter 21.
In the vehicle power-supply unit that constitutes in this way, as shown in figure 11, the direct voltage of introducing from overhead power transmission line by the bow collector that is installed on the vehicle is divided into 4 equal parts, they are imported into unit converter 10, unit converter 11, unit converter 12 and unit converter 13 as input, and they are connected in series mutually.Particularly, adopt a kind of like this structure, wherein the positive input Pin1 of unit converter 10 links to each other with bow collector; Realization is from the negative connection of importing Nin1 to the positive input Pin2 of unit converter 11 of unit converter 10; Realization is from the negative connection of importing Nin2 to the positive input Pin3 of unit converter 12 of unit converter 11; Realization is from the negative connection of importing Nin3 to the positive input Pin4 of unit converter 13 of unit converter 12; And the negative input Nin4 of unit converter 13 links to each other with the wheel that links to each other with the minus side of built on stilts power supply.
Equally, unit converter 14 to 17 and unit converter 18 are connected in series respectively to 21, and the direct voltage of introducing from overhead power transmission line is divided into 4 parts, is imported into these unit converters then.
Specifically, adopt a kind of like this structure, wherein the positive input Pin5 of unit converter 14 links to each other with bow collector; Realization is from the negative connection of importing Nin5 to the positive input Pin6 of unit converter 15 of unit converter 14; Realization is from the negative connection of importing Nin6 to the positive input Pin7 of unit converter 16 of unit converter 15; Realization is from the negative connection of importing Nin7 to the positive input Pin8 of unit converter 17 of unit converter 16; And the negative input Nin8 of unit converter 17 links to each other with the wheel that links to each other with the minus side of built on stilts power supply.And adopt a kind of like this structure, wherein the positive input Pin9 of unit converter 18 links to each other with bow collector; Realization is from the negative connection of importing Nin9 to the positive input Pin10 of unit converter 19 of unit converter 18; Realization is from the negative connection of importing Nin10 to the positive input Pin11 of unit converter 20 of unit converter 19; Realization is from the negative connection of importing Nin11 to the positive input Pin12 of unit converter 21 of unit converter 20; And the negative input Nin12 of unit converter 21 links to each other with the wheel that links to each other with the minus side of built on stilts power supply.
The output stage of unit converter 10-13 is connected in series, the U phase voltage of output 60Hz; The output stage of unit converter 14-17 also is connected in series, the V phase voltage of phase deviation 120 degree of output and U phase voltage; The output stage of unit converter 18-21 also is connected in series, output W phase voltage, and it is with respect to U phase voltage phase deviation 240 degree.
In the vehicle power-supply unit that constitutes in this way, DC/AC power converter cells 22 is made of IGBT element IGBT23 to 26 (IGBT is a kind of thyristor) and direct current capacitor C.When input direct voltage, export the alternating voltage of 60Hz by means of the on-off action of IGBT23 to 26.About described switch, adopt relatively PWM of common triangular wave, it uses the comparative result of triangular wave amplitude and corresponding UVW phase voltage directive.
As shown in figure 12, triangular wave is set to the frequency of 2kHz, the feasible switching frequency that produces 2kHz: in each case, the triangular wave TR14 of the triangular wave TR13 of the DC/AC inverter of the triangular wave TR11 of the DC/AC inverter of formation unit converter 10, the triangular wave TR12 that constitutes the DC/AC inverter of unit converter 11, formation unit converter 12 and the DC/AC inverter of unit converter 13 is set to have the phase differences of 22.5 degree, as shown in figure 12.By means of the switch of the like this output voltage pulse of offset units converter 2 regularly, can utilize combination voltage to obtain to have the multilevel voltage waveform of minimum distortion, as shown in figure 13.Unit converter 14 to 17 is set up with 18 to 21 triangular wave has identical differing.
Utilize to constitute vehicle power-supply unit in this way, therefore the interchange LC filter that can eliminate in output stage is compared with first to the 3rd embodiment, can be further reduced in size.
Thereby, utilize the vehicle power-supply unit that constitutes in this way, can realize reducing cost, reducing loss and reduce size.
(the 5th embodiment)
Describe in detail according to the fifth embodiment of the present invention with reference to the accompanying drawings.Figure 14 is the layout plan according to the cells D C/DC converter of the vehicle power-supply unit of fifth embodiment of the invention.Structurally represent with identical label to the identical parts of Figure 13, and omit its further instruction with Fig. 2.
Cells D C/DC converter 41 and 12 DC/AC inverter 51A-51L (not shown) of comprising 12 outputs of single input according to the vehicle power-supply unit of fifth embodiment of the invention.
Cells D C/DC converter 41 uses inverters 6 that the part of overhead power transmission line is converted to the square wave alternating-current electricity of 50kHz, and is entered into 12 rectifier 7A, 7B-7K, 7L by high frequency transformer.Described 12 rectifier 7A, 7B-7K, 7L output is by separately the level and smooth direct voltage of filtering capacitor.Direct voltage by 12 insulation of 12 rectifiers 7 output is output to DC/AC inverter 51A-51L.DC/AC inverter unit 22 identical functions among DC/AC inverter 51A-51L execution and the 4th embodiment, and the UVW three-phase voltage of output 60Hz.
DC/AC inverter 51A-51D has the output stage separately that is connected in series, and by means of triangular wave phase difference operation mutually, can produce the minimum multilevel voltage waveform of distortion.DC/AC inverter 51E-51H is set up with 51I-51L has identical phase difference.In this way, can omit the interchange LC filter of output stage.
Utilize the vehicle power-supply unit that constitutes in this way, the interchange LC filter of eliminating output stage makes to be compared with the vehicle power-supply unit of first to the 3rd embodiment, can further reduce size.
In addition, utilize the vehicle power-supply unit that constitutes in this way, can realize reducing cost, reducing loss and reduce size.
(the 6th embodiment)
Describe in detail according to the sixth embodiment of the present invention with reference to the accompanying drawings.Figure 15 is the layout plan according to the vehicle power-supply unit of sixth embodiment of the invention.Structurally represent with identical label to the identical parts of Figure 14, and omit its further instruction with Fig. 2.
According to typically being characterised in that of the sixth embodiment of the present invention, remove outside the structural detail of the 4th embodiment, provide switch 61 (61A-61D; But, under the situation of 61B-61D, do not have attached label, so that accompanying drawing is simple and clear) and 62 (62A-62D; But, under the situation of 62B-62D, do not have attached label, so that accompanying drawing is simple and clear), they can be at the input side of unit converter 10-21 and outlet side respectively by electric short circuit.
For example, if it is inoperable to make that for a certain reason unit converter 10 becomes, then the short-circuit switch of input 61A of unit converter 10 and output short-circuit switch 62A are connected respectively, thereby produce short circuit condition, utilize other unit converter 11 then, 12-21 continues operation.In this way, can improve the continuity of system operation, and improve redundancy.
Utilize the vehicle power-supply unit that constitutes in this way, the interchange LC filter of eliminating output stage makes to be compared with the vehicle power-supply unit of first to the 3rd embodiment, can further reduce size.
In addition, utilize the vehicle power-supply unit that constitutes in this way, can realize reducing cost, reducing loss and reduce size.
(the 7th embodiment)
Describe in detail according to the seventh embodiment of the present invention with reference to the accompanying drawings.Figure 16 is the layout plan according to the vehicle power-supply unit of seventh embodiment of the invention.Figure 17 is the improved example according to the vehicle power-supply unit of seventh embodiment of the invention.Structurally represent with identical label to the identical parts of Figure 15, and omit its further instruction with Fig. 2.
Vehicle power-supply unit according to seventh embodiment of the invention comprises DC/DC converter 8 (8a-8d) and 5 grades of inverters 63 of three-phase (multi-level inverter).
The input of DC/DC converter 8a-8d is connected in series mutually, and is supplied to the direct voltage from overhead power transmission line.Equally, its output also is connected in series mutually, and the direct current input of each tie-point and 5 grades of inverters 63 links to each other.
5 grades of inverters 63 are 5 grades of inverters of a kind of known clamp type, and its switching manipulation also is known, thereby no longer explanation herein.Utilize this structure, be implemented in the insulation between overhead power transmission line and the output,, also can obtain the ac output voltage of minimum wave distortion even make and not use the LC filter.
Utilize the vehicle power-supply unit that constitutes in this way, compare with the vehicle power-supply unit of first to the 3rd embodiment, the interchange LC filter of eliminating output stage makes it possible to realize further reducing of size.
In addition, utilize the vehicle power-supply unit that constitutes in this way, can realize reducing cost, reducing loss and reduce size.
In an improved example, as shown in figure 17, it is also contemplated that a kind of structure, wherein by means of the power-supply device that provides single DC/DC converter to realize reducing cost, reduce loss and reduce size according to the vehicle power-supply unit of present embodiment.
In explanation according to the vehicle power-supply unit of first to the 7th embodiment of the present invention, the semiconductor element that is installed in the converter 5 is that example is illustrated with IGBT, is not limited to IGBT but be installed in according to the semiconductor element in the vehicle power-supply unit of the present invention.
As mentioned above, utilize the present invention, can realize to reduce the vehicle power-supply unit of size.
Claims (9)
1. vehicle power-supply unit comprises:
Inverter is used for direct current is converted to high-frequency alternating current;
The high-frequency insulation transformer makes the alternating current that provides from described inverter by electric insulation whereby;
The cells D C/DC converter of a plurality of small-sized integrative-structures, its unit module is a rectifier, is used for the high-frequency alternating current that provides from described high frequency transformer is converted to direct current; And
The CVCF inverter is used for the described direct current that provides from described a plurality of DC/DC converters is transformed into alternating current;
The input side of wherein said a plurality of cells D C/DC converters is connected in series, and the outlet side of described a plurality of cells D C/DC converters is connected in series or is connected in parallel or connect/is connected in parallel.
2. vehicle power-supply unit as claimed in claim 1 wherein in described cells D C/DC converter, constitutes the semiconductor element of described inverter and described rectifier and the high frequency wiring of described DC/DC converter at least and is installed on the printed circuit board (PCB).
3. vehicle power-supply unit comprises:
Have the high-frequency insulation transformer, and the alternating current from overhead power transmission line is transformed into galvanic a plurality of cells D C/DC converter; And
The CVCF inverter is used for the described direct current that provides from described cells D C/DC converter is transformed into alternating current.
4. vehicle power-supply unit comprises:
Have the high-frequency insulation transformer, and the power converter from overhead power transmission line is become galvanic DC/DC converter; And
The CVCF inverter is used for the direct current that provides from described DC/DC converter is transformed into alternating current.
5. as any one described vehicle power-supply unit of claim 1-4, comprise that multi-level inverter is used to replace described CVCF inverter.
6. as any one described vehicle power-supply unit of claim 1,3 or 4, wherein said high-frequency insulation transformer is used under 50kHz.
7. vehicle power-supply unit comprises:
Be used for direct current is transformed into the inverter of high-frequency alternating current;
High frequency transformer makes the described alternating current that provides from described inverter by electric insulation whereby;
The cells D C/DC converter of small-sized integrative-structure, its unit module is a rectifier, is used for the high-frequency alternating current that provides from described high frequency transformer is transformed into direct current;
The DC/AC converter is used for the described direct current that provides from described a plurality of cells D C/DC converters is transformed into alternating current; And
The unit power converter cells of a plurality of integrative-structures, its unit module are a described cells D C/DC converter and described DC/AC converter,
The output of wherein said a plurality of unit power converter cells is connected in series, the operation of described a plurality of unit power converter cells excute phase difference.
8. vehicle power-supply unit as claimed in claim 7, wherein said cells D C/DC converter are many outputs.
9. vehicle power-supply unit as claimed in claim 8, wherein said switch is provided on the input side of described unit power converter cells.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004169330 | 2004-06-08 | ||
| JP2004169330 | 2004-06-08 | ||
| JP2005122787 | 2005-04-20 |
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| Publication Number | Publication Date |
|---|---|
| CN1707932A true CN1707932A (en) | 2005-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510076200 Pending CN1707932A (en) | 2004-06-08 | 2005-06-08 | Electric power device for vehicle |
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| Country | Link |
|---|---|
| CN (1) | CN1707932A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860228A (en) * | 2010-05-07 | 2010-10-13 | 中国科学院电工研究所 | Power electronic transformer for high voltage distribution |
| CN101958658A (en) * | 2009-07-20 | 2011-01-26 | 通用电气公司 | Be used for system, the method and apparatus of DC power transfer to AC power |
| CN101783612B (en) * | 2009-01-15 | 2012-07-04 | 盈正豫顺电子股份有限公司 | Three-arm power conversion device |
| CN102904420A (en) * | 2012-09-29 | 2013-01-30 | 中国科学院电工研究所 | Multi-port current transformer |
| CN103069701A (en) * | 2010-08-18 | 2013-04-24 | 雷米技术有限公司 | Auxiliary device using primary inverter feeds |
| CN103427608A (en) * | 2013-08-14 | 2013-12-04 | 株洲变流技术国家工程研究中心有限公司 | Mobile type high-power alternating current (AC)/direct current (DC) hybrid power supply device |
| CN105981281A (en) * | 2013-12-03 | 2016-09-28 | 三菱电机株式会社 | Power conversion device |
| CN106536258A (en) * | 2014-07-18 | 2017-03-22 | 三菱电机株式会社 | Vehicle-use auxiliary power source device |
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2005
- 2005-06-08 CN CN 200510076200 patent/CN1707932A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783612B (en) * | 2009-01-15 | 2012-07-04 | 盈正豫顺电子股份有限公司 | Three-arm power conversion device |
| CN101958658A (en) * | 2009-07-20 | 2011-01-26 | 通用电气公司 | Be used for system, the method and apparatus of DC power transfer to AC power |
| CN101860228A (en) * | 2010-05-07 | 2010-10-13 | 中国科学院电工研究所 | Power electronic transformer for high voltage distribution |
| CN103069701A (en) * | 2010-08-18 | 2013-04-24 | 雷米技术有限公司 | Auxiliary device using primary inverter feeds |
| CN102904420A (en) * | 2012-09-29 | 2013-01-30 | 中国科学院电工研究所 | Multi-port current transformer |
| CN103427608A (en) * | 2013-08-14 | 2013-12-04 | 株洲变流技术国家工程研究中心有限公司 | Mobile type high-power alternating current (AC)/direct current (DC) hybrid power supply device |
| CN103427608B (en) * | 2013-08-14 | 2015-09-09 | 株洲变流技术国家工程研究中心有限公司 | A kind of mobile high-power alternating current-direct current hybrid power supply device |
| CN105981281A (en) * | 2013-12-03 | 2016-09-28 | 三菱电机株式会社 | Power conversion device |
| CN105981281B (en) * | 2013-12-03 | 2018-12-07 | 三菱电机株式会社 | Power conversion device |
| CN106536258A (en) * | 2014-07-18 | 2017-03-22 | 三菱电机株式会社 | Vehicle-use auxiliary power source device |
| CN106536258B (en) * | 2014-07-18 | 2018-09-28 | 三菱电机株式会社 | Auxiliary power supply for vehicle |
| US10770985B2 (en) | 2014-07-18 | 2020-09-08 | Mitsubishi Electric Corporation | Vehicle auxiliary power supply device |
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