CN102684514A - Energy feedback type traction power supply device - Google Patents
Energy feedback type traction power supply device Download PDFInfo
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- CN102684514A CN102684514A CN201210065612XA CN201210065612A CN102684514A CN 102684514 A CN102684514 A CN 102684514A CN 201210065612X A CN201210065612X A CN 201210065612XA CN 201210065612 A CN201210065612 A CN 201210065612A CN 102684514 A CN102684514 A CN 102684514A
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Abstract
The invention provides an energy feedback type traction power supply device which comprises one transformer, a diode rectifier unit, a pulse-width modulation (PWM) rectifier unit and a bidirectional direct current-direct current (DC-DC) convertor. A primary side three-phase winding of the transformer is used for being connected with an alternating current power supply, and two secondary three-phase winding of the transformer are respectively connected with the alternating current side of the diode rectifier unit and the alternating current side of the PWM rectifier unit. The bidirectional DC-DC convertor is connected with the direct current side of the diode rectifier unit and the direct current side of the PWM rectifier unit and used for adjusting output voltage on the direct current sides. The diode rectifier unit and the PWM rectifier unit shares one transformer through the DC-DC convertor, the transformer number can be decreased, the cost of the energy feedback type traction power supply device can be reduced, and the installing space can be reduced.
Description
Technical field
The present invention relates to the traction power supply technology of electric locomotive, relate in particular to a kind of have an energy feedback function can present the formula traction power set.
Background technology
At present; Electric locomotive; Particularly city railway train generally adopts direct current supply; Traction power set through electric substation is a train power supply, and traction power set adopts 12 or 24 pulse wave diode rectification units to convert the alternating current of AC network to DC traction net power supply that direct current is a train, and the VD of existing diode rectification unit is uncontrollable and scope range of the fluctuation of voltage is big; And diode rectification unit energy can only be by AC side to the DC side one-way transmission, and the braking energy during the train regenerative braking can not the feedback AC network, needs consume excess energy with brake resistance, causes the waste of the energy.
Application number is 200810103678.7 Chinese patent document, discloses a kind of mixed traction power supply equipment and control method, adopts pulse width modulation (Pulse Width Modulation; Being called for short PWM) Rectification Power Factor is parallelly connected with the diode rectification unit, makes full use of that the diode rectification unit is simple and reliable, overload capacity is strong, and the two-way flow of PWM Rectification Power Factor energy; The advantage that power factor is adjustable; Can improve the direct current network voltage stability, improve power supply quality, also can realize train braking energy feedback AC network simultaneously; Avoid braking energy on brake resistance, to consume, conserve energy.
But; In the technique scheme, if the diode rectification unit is identical with the alternating voltage of PWM Rectification Power Factor input, then the direct voltage of the DirectCurrent Voltage Ratio diode rectification unit output of PWM Rectification Power Factor output is big; Thereby need dispose transformer respectively to diode rectification unit and PWM Rectification Power Factor; Cause equipment cost higher, the installation of this transformer simultaneously need take very large space, makes practical engineering application be very limited.
Summary of the invention
The present invention provides a kind of can present the formula traction power set, needs the configure dedicated transformer, the technological deficiency that equipment cost height and installing space are big can present the formula traction power set in the solution prior art.
The present invention provides a kind of can present the formula traction power set, comprises transformer, diode rectification unit and PWM Rectification Power Factor, and this can be presented the formula traction power set and also comprise bidirectional DC-DC converter; The quantity of said transformer is one;
Former limit three phase windings of said transformer are used for being connected with AC power, and two secondary three phase windings of said transformer are connected with the AC side of said diode rectification unit and PWM Rectification Power Factor respectively;
Said bidirectional DC-DC converter is connected with the DC side of said diode rectification unit and PWM Rectification Power Factor, is used to adjust the output voltage of DC side.
Aforesaidly can present the formula traction power set, said former limit three phase windings are that triangle connects, and said two secondary three phase windings are respectively triangle and connect and Y-connection.
Aforesaidly can present the formula traction power set, said bidirectional DC-DC converter comprises half-bridge circuit, filter inductance and filter capacitor; Said filter inductance is connected with the mid point of said half-bridge circuit, and said filter capacitor is connected with anodal with the mid point of said half-bridge circuit;
The positive pole of said half-bridge circuit is connected with the DC side of negative pole with said PWM Rectification Power Factor, and the mid point of said half-bridge circuit is connected with the DC side of negative pole with said diode rectification unit.
Aforesaidly can present the formula traction power set, said diode rectification unit comprises two diode connected in parallel rectifiers and is connected with said two secondary three phase windings respectively.
Aforesaidly can present the formula traction power set, said diode rectifier comprises three groups of diode rectification unit;
Every group of diode rectification unit comprises two diode in series unit;
The mid point of every group of diode rectification unit is connected with the ac bus of AC side, and the positive pole of every group of diode rectification unit is connected with the dc bus of DC side with negative pole.
Aforesaidly can present the formula traction power set, said diode comprises that a plurality of diode connected in parallel and each diode are in series with fuse.Aforesaidly can present the formula traction power set, said PWM Rectification Power Factor comprises the PWM rectifier of two parallel connections and is connected with said two secondary three phase windings respectively.
Aforesaidly can present the formula traction power set, said PWM rectifier comprises three groups of power devices; Every group of power device comprises the power model of two series connection;
The mid point of every group of power device is connected with the ac bus of AC side, and the positive pole of every group of power device is connected with the dc bus of DC side with negative pole.
Aforesaidly can present the formula traction power set, said PWM rectifier also comprises ac filter electric capacity and ac filter inductance;
Said ac filter electric capacity is connected in parallel on the ac bus of AC side, and said ac filter inductance is connected respectively on the ac bus of AC side.
Aforesaidly can present the formula traction power set, said PWM rectifier comprises that also direct current supports electric capacity and dc fuse; Said direct current supports electric capacity and is connected in parallel on the dc bus of DC side, and said dc fuse is connected on the dc bus of DC side.
Provided by the inventionly can present the formula traction power set; Realize diode rectification unit and the shared transformer of PWM Rectification Power Factor through bidirectional DC-DC converter; Can reduce the quantity of transformer, reduction can be presented the cost of formula traction power set, and can reduce installing space.
Description of drawings
The sketch map that can present the formula traction power set that Fig. 1 provides for the embodiment of the invention;
The sketch map of the transformer that Fig. 2 provides for the embodiment of the invention;
The main circuit sketch map of the diode rectifier that Fig. 3 provides for the embodiment of the invention;
The main circuit sketch map of the PWM rectifier that Fig. 4 provides for the embodiment of the invention;
The main circuit sketch map of the bidirectional DC-DC converter that Fig. 5 provides for the embodiment of the invention;
The control block diagram that can present the formula traction power set that Fig. 6 provides for the embodiment of the invention;
The control block diagram of the PWM rectifier that Fig. 7 provides for the embodiment of the invention;
The current loop control block diagram that Fig. 8 provides for the embodiment of the invention;
The control block diagram of the bidirectional DC-DC converter that Fig. 9 provides for the embodiment of the invention.
Embodiment
The sketch map that can present the formula traction power set that Fig. 1 provides for the embodiment of the invention.As shown in Figure 1, what present embodiment provided can present the formula traction power set, comprises transformer 1, diode rectification unit 2, PWM Rectification Power Factor 3 and bi-directional DC-DC (DC-to-dc) converter 4.
The quantity of transformer 1 is one; Former limit three phase windings of transformer 1 are used for being connected with AC power; This AC power can be the three-phase alternating current net, and two secondary three phase windings of transformer 1 are connected with the AC side of diode rectification unit 2 with PWM Rectification Power Factor 3 respectively.
Bidirectional DC-DC converter 4 is connected with the DC side of diode rectification unit 2 with PWM Rectification Power Factor 3; Be used to adjust the output voltage of diode rectification unit 2 and PWM Rectification Power Factor 3 DC sides; Make that the output voltage V dc2 of PWM Rectification Power Factor 3 is identical with the output voltage V dc1 of diode rectification unit 2, can parallel connection supply power to the DC traction net of train.
Bidirectional DC-DC converter 4 can realize that the two-way flow of energy and output characteristic can adjust; The direct voltage Vdc2 of PWM Rectification Power Factor 3 outputs is through the adjustment of bidirectional DC-DC converter 4; Be consistent with the direct voltage Vdc1 of diode rectification unit 2 outputs, and can parallel connection supply power to the DC traction net of train.During train braking; The braking energy of train feeds back to PWM Rectification Power Factor 3 through bidirectional DC-DC converter 4; Feed back to AC network through transformer 1 again, through the adjustment of bidirectional DC-DC converter 4, can improve direct current network voltage stability and can conserve energy.
What present embodiment provided can present the formula traction power set; Realize diode rectifier 2 and PWM Rectification Power Factor 3 shared transformers 1 through bidirectional DC-DC converter 4; Can reduce the quantity of transformer 1, reduction can be presented the cost of formula traction power set, and can reduce installing space.
The sketch map of the transformer that Fig. 2 provides for the embodiment of the invention.As shown in Figure 2, further, transformer 1 can be three-phase phase-shifting transformer, and this three-phase phase-shifting transformer is the dry-type transformer of poured with epoxy resin.
Further, diode rectification unit 2 comprises two diode connected in parallel rectifiers and is connected with two secondary three phase windings of transformer 1 respectively.
The main circuit sketch map of the diode rectifier that Fig. 3 provides for the embodiment of the invention.As shown in Figure 3, wherein, a diode rectifier comprises three groups of diode rectification unit, and three groups of diode rectification unit constitute three-phase bridge rectifier circuit.Every group of diode rectification unit comprises two diode in series unit, and each diode rectifier has six diodes (D1～D6).
The mid point of every group of diode rectification unit is connected with the ac bus of AC side, and the positive pole of every group of diode rectification unit is connected with the dc bus of DC side with negative pole.Each diode can comprise that a plurality of diode connected in parallel and each diode are in series with fuse, can improve the capacity and the reliability of diode rectification unit 2.
The main circuit sketch map of the PWM rectifier that Fig. 4 provides for the embodiment of the invention; As shown in Figure 4, further, PWM Rectification Power Factor 3 comprises the PWM rectifier of two parallel connections and is connected with two secondary three phase windings of transformer 1 respectively.Each PWM rectifier comprises three groups of power devices; Every group of power device comprises the power model of two series connection, and each PWM rectifier has six power models (T1～T6).The mid point of every group of power device is connected with the ac bus of AC side, and the positive pole of every group of power device is connected with the dc bus of DC side with negative pole.
Power device can be insulated gate bipolar transistor (the Insulated Gate Bipolar Transistor of semibridge system; Be called for short IGBT) power model; The IGBT power model has functions such as driving, protection and current measurement; Adopt the IGBT power model can simplify the system configuration that can present the formula traction power set, raising can be presented the reliability of formula traction power set.
Each PWM rectifier also comprises ac filter capacitor C f and ac filter inductance L; The quantity of ac filter capacitor C F is three, and three ac filter capacitor C f are connected in parallel on the ac bus of AC side.The quantity of ac filter inductance L d is three, is connected on respectively on the three-phase alternating current bus of AC side.Three-phase secondary winding self the leakage inductance Lk of ac filter capacitor C f and ac filter inductance L and transformer 1 can constitute LCL (inductor-capacitor-inductance) mode filter, thereby can reduce the harmonic current that PWM Rectification Power Factor 3 is injected AC network.
Each PWM rectifier comprises that also direct current supports capacitor C d and dc fuse F; Direct current supports capacitor C d and is connected in parallel on the dc bus of DC side, and dc fuse F is connected on the dc bus of DC side.Direct current supports capacitor C d can adopt thin-film capacitor, and the ripple current handling capacity that this direct current supports capacitor C d is strong, and equiva lent impedance is little, and the life-span is long.Dc fuse F is used for when direct current output is short-circuited, realizing the protection to the main circuit of PWM rectifier.
The main circuit sketch map of the bidirectional DC-DC converter that Fig. 5 provides for the embodiment of the invention.As shown in Figure 5, bidirectional DC-DC converter 4 comprises half-bridge circuit, filter inductance Lf and filter capacitor C; Filter inductance is connected with the mid point of half-bridge circuit, and filter capacitor C is connected with negative pole with the mid point of half-bridge circuit.
Half-bridge circuit can be the IGBT half-bridge circuit, comprises an IGBT switching tube S1 and the 2nd IGBT switching tube S2 of series connection.The positive pole of half-bridge circuit is connected with the DC side of negative pole with PWM Rectification Power Factor 3, and the mid point of half-bridge circuit is connected with the DC side of negative pole with diode rectification unit 2.The direct voltage Vdc2 of PWM Rectification Power Factor 3 outputs is higher than the direct voltage Vdc1 of diode rectification unit 2 outputs; Thereby; The positive pole of IGBT half-bridge circuit and negative pole are the high voltage input terminal of bidirectional DC-DC converter 4, and the mid point of IGBT half-bridge circuit and negative pole are the low pressure input of bidirectional DC-DC converter 4.Bidirectional DC-DC converter 4 has the ability of energy two-way flow.
When PWM Rectification Power Factor 3 energy forward flow; Control the conducting of an IGBT switching tube S 1; Bidirectional DC-DC converter 4 is worked under step-down (BUCK) pattern; Direct voltage Vdc2 step-down with 3 outputs of PWM Rectification Power Factor makes Vdc2 identical with the output voltage V dc1 of diode rectification unit 2, and then makes PWM Rectification Power Factor 3 with the DC traction net power supply of diode rectification unit 2 parallel connections to train.
When the braking energy feedback electrical network, control the conducting of the 2nd IGBT switching tube S2, bidirectional DC-DC converter 4 is worked under (BOOST) pattern of boosting, and gives AC network with energy through PWM Rectification Power Factor 3 and transformer 1 loopback.Bidirectional DC-DC converter 4 pass through corresponding control strategies, the direct voltage that obtains after making PWM Rectification Power Factor 3 through DC-DC converters 4 and the VD characteristic of diode rectification unit 2 are consistent.
Specify the control principle that can present the formula traction power set and process that the foregoing description provides below:
What the foregoing description provided can present the formula traction power set, can adopt control unit that PWM Rectification Power Factor 3 and bidirectional DC-DC converter 4 are controlled.Particularly, the control block diagram that can present the formula traction power set that provides for the embodiment of the invention of Fig. 6.As shown in Figure 6, two diode connected in parallel rectifier DC side voltage v
Dc1Active current command value I through all PWM rectifiers of closed-loop control output
d *, the process sharing control obtains the active current command value I of two PWM rectifiers afterwards
D1 *, I
D2 *
Can pass through the given idle instruction current I of control unit
Q1 *, I
Q2 *The former limit winding electric kinetic potential e of transformer 1
a, e
bAnd e
cProcess phase-locked loop (Phase Locked Loop is called for short PLL) and dq coordinate transform obtain the phase angle theta of every group of secondary electromotive force of transformer 1
1, θ
2Reach the value E of electromotive force under the rotating coordinate system
dThe common input current ring of the alternating current of the alternating current of above-mentioned physical quantity and each diode rectifier, PWM rectifier (I_loop1, I_loo2) is through the switching pulse g1～g6 of computing output control PWM rectifier.
The control block diagram of the PWM rectifier that Fig. 7 provides for the embodiment of the invention.As shown in Figure 7, this control method comprises direct current pressure ring and alternating current ring.The input of direct current pressure ring comprises the command value V of direct voltage
Dc *, diode rectification unit 2 output direct voltage V
Dc1And direct current I
Dc1, PWM Rectification Power Factor 3 output direct voltage V
Dc2And direct current I
Dc2
The direct current pressure ring is output as the meritorious instruction current I of diode rectification unit 2
D1 *Meritorious instruction current I with PWM Rectification Power Factor 3
D2 *
The input of alternating current ring includes the meritorious instruction current I of diode rectification unit 2
D1 *, net side electromotive force E
d, idle instruction current I
Q1 *, the electrical network phase angle theta
1, diode rectifier electric current I
A1, I
B1And I
C1, PWM rectifier current I
A1, I
B1And I
C1
The alternating current ring is output as the driving pulse g1～g6 of control PWM rectifier.
The current loop control block diagram that Fig. 8 provides for the embodiment of the invention.As shown in Figure 8, be example with a diode rectifier, the secondary phase angle theta of transformer 1
1, rotating vector amplitude E
d, active current command value I
D1 *With idle instruction current I
Q1 *, diode rectifier alternating current I
A1, I
B1And I
C1, PWM rectifier alternating current I
A1, I
B1And I
C1Through computing; Can eliminate the interference of electrical network electromotive force and diode rectifier; Can obtain the instruction output voltage of PWM rectifier, and then pass through the driving pulse g1～g6 of the controlled PWM rectifier of space vector pulse width modulation (Space Vector Pulse Width Modulation is called for short SVPWM).
The control block diagram of the bidirectional DC-DC converter that Fig. 9 provides for the embodiment of the invention.As shown in Figure 9, the control mode of bidirectional DC-DC converter 4 is following: according to detected diode rectification unit 2 output DCs stream I
Dc1, obtain the modulation duty cycle D of an IGBT switching tube S1 through ratio, summing circuit, with the pwm signal that obtains driving an IGBT switching tube S1 after triangular carrier is compared.This pwm signal process inverter obtains the pwm signal of one tunnel anti-phase, is used for driving the conducting of the 2nd IGBT switching tube S2.
One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each method embodiment can be accomplished through the relevant hardware of program command.Aforesaid program can be stored in the microcomputer control unit.This program the step that comprises above-mentioned each method embodiment when carrying out; And aforesaid microcomputer control unit comprises: digital processing chip, single-chip microcomputer etc.
What should explain at last is: above each embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although the present invention has been carried out detailed explanation with reference to aforementioned each embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, perhaps to wherein part or all technical characteristic are equal to replacement; And these are revised or replacement, do not make the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (10)
1. can present the formula traction power set for one kind, comprise transformer, diode rectification unit and PWM Rectification Power Factor, it is characterized in that, this can be presented the formula traction power set and also comprise bidirectional DC-DC converter; The quantity of said transformer is one;
Former limit three phase windings of said transformer are used for being connected with AC power, and two secondary three phase windings of said transformer are connected with the AC side of said diode rectification unit and PWM Rectification Power Factor respectively;
Said bidirectional DC-DC converter is connected with the DC side of said diode rectification unit and PWM Rectification Power Factor, is used to adjust the output voltage of DC side.
2. according to claim 1ly can present the formula traction power set, it is characterized in that, said former limit three phase windings are that triangle connects, and said two secondary three phase windings are respectively triangle and connect and Y-connection.
3. according to claim 1 and 2ly can present the formula traction power set, it is characterized in that said bidirectional DC-DC converter comprises half-bridge circuit, filter inductance and filter capacitor; Said filter inductance is connected with the mid point of said half-bridge circuit, and said filter capacitor is connected with anodal with the mid point of said half-bridge circuit;
The positive pole of said half-bridge circuit is connected with the DC side of negative pole with said PWM Rectification Power Factor, and the mid point of said half-bridge circuit is connected with the DC side of negative pole with said diode rectification unit.
4. according to claim 1 and 2ly can present the formula traction power set, it is characterized in that said diode rectification unit comprises two diode connected in parallel rectifiers and is connected with said two secondary three phase windings respectively.
5. according to claim 4ly can present the formula traction power set, it is characterized in that said diode rectifier comprises three groups of diode rectification unit;
Every group of diode rectification unit comprises two diode in series unit;
The mid point of every group of diode rectification unit is connected with the ac bus of AC side, and the positive pole of every group of diode rectification unit is connected with the dc bus of DC side with negative pole.
6. according to claim 5ly can present the formula traction power set, it is characterized in that said diode comprises that a plurality of diode connected in parallel and each diode are in series with fuse.
7. according to claim 1 and 2ly can present the formula traction power set, it is characterized in that said PWM Rectification Power Factor comprises the PWM rectifier of two parallel connections and is connected with said two secondary three phase windings respectively.
8. according to claim 7ly can present the formula traction power set, it is characterized in that said PWM rectifier comprises three groups of power devices; Every group of power device comprises the power model of two series connection;
The mid point of every group of power device is connected with the ac bus of AC side, and the positive pole of every group of power device is connected with the dc bus of DC side with negative pole.
9. according to claim 8ly can present the formula traction power set, it is characterized in that said PWM rectifier also comprises ac filter electric capacity and ac filter inductance;
Said ac filter electric capacity is connected in parallel on the ac bus of AC side, and said ac filter inductance is connected respectively on the ac bus of AC side.
10. describedly can present the formula traction power set according to claim 7 or 8, it is characterized in that, said PWM rectifier comprises that also direct current supports electric capacity and dc fuse; Said direct current supports electric capacity and is connected in parallel on the dc bus of DC side, and said dc fuse is connected on the dc bus of DC side.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210065612XA CN102684514A (en) | 2012-03-13 | 2012-03-13 | Energy feedback type traction power supply device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210065612XA CN102684514A (en) | 2012-03-13 | 2012-03-13 | Energy feedback type traction power supply device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103612573A (en) * | 2013-09-10 | 2014-03-05 | 广州市地下铁道总公司 | Energy-feedback type traction power supply device with low harmonic waves and high output power and control method of energy-feedback type traction power supply device |
| CN103683983A (en) * | 2013-12-04 | 2014-03-26 | 南车株洲电力机车研究所有限公司 | Hybrid energy feedback type direct-current traction power supply device and control method |
| CN105281401A (en) * | 2015-10-10 | 2016-01-27 | 中国农业大学 | Novel storage battery charging and discharging system |
| CN105811797A (en) * | 2015-01-16 | 2016-07-27 | 阿尔斯通运输科技公司 | Convertor for electric feeder and/or substation for recuperating the braking energy |
| CN106787841A (en) * | 2016-12-26 | 2017-05-31 | 九江赛晶科技股份有限公司 | rectification control system with redundant current feedback |
| CN108808720A (en) * | 2017-04-26 | 2018-11-13 | 中车株洲电力机车研究所有限公司 | A kind of tractive power supply system |
| CN110995017A (en) * | 2019-12-27 | 2020-04-10 | 散裂中子源科学中心 | High-voltage resonant network energy fluctuation control circuit and control method |
| CN112737367A (en) * | 2020-12-09 | 2021-04-30 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Rectifying power supply device |
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| CN101713816A (en) * | 2008-12-31 | 2010-05-26 | 南京理工大学 | Alternating current motor traction test platform with bidirectional direct current energy-feedback link |
| CN102328601A (en) * | 2011-09-13 | 2012-01-25 | 北京千驷驭电气有限公司 | Energy-feedback tractive power supply system with high power factor and high cost performance |
| CN202488369U (en) * | 2012-03-13 | 2012-10-10 | 北京千驷驭电气有限公司 | Energy-feedback traction power unit |
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| CN101713816A (en) * | 2008-12-31 | 2010-05-26 | 南京理工大学 | Alternating current motor traction test platform with bidirectional direct current energy-feedback link |
| CN102328601A (en) * | 2011-09-13 | 2012-01-25 | 北京千驷驭电气有限公司 | Energy-feedback tractive power supply system with high power factor and high cost performance |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103612573A (en) * | 2013-09-10 | 2014-03-05 | 广州市地下铁道总公司 | Energy-feedback type traction power supply device with low harmonic waves and high output power and control method of energy-feedback type traction power supply device |
| CN103612573B (en) * | 2013-09-10 | 2016-07-06 | 广州市地下铁道总公司 | What have low harmony wave high-output power can present formula traction power set and control method |
| CN103683983A (en) * | 2013-12-04 | 2014-03-26 | 南车株洲电力机车研究所有限公司 | Hybrid energy feedback type direct-current traction power supply device and control method |
| CN103683983B (en) * | 2013-12-04 | 2015-03-25 | 南车株洲电力机车研究所有限公司 | Hybrid energy feedback type direct-current traction power supply device and control method |
| CN105811797A (en) * | 2015-01-16 | 2016-07-27 | 阿尔斯通运输科技公司 | Convertor for electric feeder and/or substation for recuperating the braking energy |
| US10554117B2 (en) | 2015-01-16 | 2020-02-04 | Alstom Transport Technologies | Convertor for electric feeder and/or substation for recuperating the braking energy |
| CN105281401A (en) * | 2015-10-10 | 2016-01-27 | 中国农业大学 | Novel storage battery charging and discharging system |
| CN106787841A (en) * | 2016-12-26 | 2017-05-31 | 九江赛晶科技股份有限公司 | rectification control system with redundant current feedback |
| CN106787841B (en) * | 2016-12-26 | 2019-06-25 | 九江赛晶科技股份有限公司 | Rectification control system with redundant current feedback |
| CN108808720A (en) * | 2017-04-26 | 2018-11-13 | 中车株洲电力机车研究所有限公司 | A kind of tractive power supply system |
| CN110995017A (en) * | 2019-12-27 | 2020-04-10 | 散裂中子源科学中心 | High-voltage resonant network energy fluctuation control circuit and control method |
| CN112737367A (en) * | 2020-12-09 | 2021-04-30 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Rectifying power supply device |
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Application publication date: 20120919 |