CN106208704A - Phase shift modulation method between the brachium pontis of isolated form modular multilevel DC DC changer - Google Patents

Phase shift modulation method between the brachium pontis of isolated form modular multilevel DC DC changer Download PDF

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Publication number
CN106208704A
CN106208704A CN201610566296.2A CN201610566296A CN106208704A CN 106208704 A CN106208704 A CN 106208704A CN 201610566296 A CN201610566296 A CN 201610566296A CN 106208704 A CN106208704 A CN 106208704A
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brachium pontis
modular multilevel
converter
phase
phase shifting
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CN201610566296.2A
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CN106208704B (en
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蔡旭
孙长江
张建文
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Shanghai Jiaotong University
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Shanghai Jiaotong University
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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
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • 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
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
    • 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
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33561—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having more than one ouput with independent control
    • 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
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
    • 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
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/0074—Plural converter units whose inputs are connected in series
    • 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
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/0077—Plural converter units whose outputs are connected in series

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

The present invention provides phase shift modulation method between the brachium pontis of a kind of isolated form modular multilevel DC DC changer, described method introduces phase shifting angle between modular multilevel DC each brachium pontis of DC changer, generates edge step number standard two level waveforms as 4N+1 with this AC.The present invention generates the most accurate two level waveforms of step number at AC, reduces the voltage change ratio of AC further, reduces electromagnetic interference, alleviates the higher harmonic content of alternating voltage simultaneously and the insulation to transformator is impacted.

Description

Phase shift modulation method between the brachium pontis of isolated form modular multilevel DC-DC converter
Technical field
The present invention relates to electrical network modular multilevel change technology, in particular it relates to isolated form modular multilevel DC-DC becomes Phase shift modulation method between the brachium pontis of parallel operation, it is adaptable to the many level DC-DC converters of modularity in mesohigh direct current transmission and distribution net Control and modulation.
Background technology
Electric pressure, access DC equipment, realize power control key equipment.Because switching pressure restriction, it is conventionally used for Two level DC-DCs of field of switch power are not used to mesohigh direct current network.Isolated form modular multilevel DC-DC is used to become Parallel operation can overcome disadvantages mentioned above can meet again the reliability requirement of direct current network, and its circuit topology is as it is shown in figure 1, isolate transformation The former secondary of device connects two phase structure MMC (modular multilevel converter), and its submodule uses half-bridge to cut Wave circuit, brachium pontis inductance uses coupling inductance, prevents from suppressing direct current at transformer primary secondary series connection isolation capacitance in actual application Magnetic bias.
Use accurate two level modulation modes isolated form modular multilevel DC-DC converter AC generate edge be The approximate square waves of staircase waveform can utilize low-order harmonic transmission energy can reduce again AC voltage change ratio (dv/dt) and transformation Device insulation stress.The technical scheme of accurate two level modulation of existing realization is the interpulse phase shift modulation of submodule, i.e. at submodule Modulate the phase shifting angle that interpulse introducing is the least.Fig. 2 show use this modulation scheme time A branch road upper and lower bridge arm modulation pulse and Synthetic waveform, S1To SNFor the modulation pulse of submodule, general term S in each brachium pontisNDuring equal to 1, representation module puts into, during equal to 0 Representation module excises；θ1To θNCorresponding to each modulation pulsion phase phase shifting angle to axis of symmetry；The modulation of submodule in each brachium pontis Pulse is symmetrical, the instantaneous voltage input by the most each brachium pontis be step number be the standard two of N+1 (N is brachium pontis submodule number) Level waveforms is (such as bridge arm voltage u in A phaseau)；This modulation scheme uses upper and lower bridge arm pulse complimentary fashion, therefore raw at AC Becoming ladder is that standard two level waveforms of N+1 is (such as primary voltage of transformer upo)。
Owing to using upper and lower bridge modulation pulse complimentary fashion, existing modulation scheme cannot realize the ability between upper and lower bridge arm and hand over Change and voltage balance control between brachium pontis, and the step number of AC voltage waveform is restricted.
Summary of the invention
For defect of the prior art, it is an object of the invention to provide a kind of isolated form modular multilevel DC-DC and become Phase shift modulation method between the brachium pontis of parallel operation, generates the most accurate two level waveforms of step number at AC, reduces exchange further The voltage change ratio of side.
For achieving the above object, the present invention provides and moves between the brachium pontis of a kind of isolated form modular multilevel DC-DC converter Phase modulator approach, described method introduces phase shifting angle between each brachium pontis of modular multilevel DC-DC converter, raw with this AC Standard two level waveforms becoming edge step number to be 4N+1.
Concrete, described method comprises the steps:
Step 1: introduce between the same brachium pontis Neutron module modulated pulse signal of modular multilevel DC-DC converter and move Phase angle, with sequence θ1To θNRepresenting, each phase shifting angle is symmetrical about brachium pontis axis of symmetry；
Step 2: introduce phase shifting angle between the modulated pulse signal of modular multilevel DC-DC converter upper and lower bridge arm, former Phase shifting angle with sequence γ between A, B phase upper and lower bridge arm of limitaTo γbRepresent, modulated process guarantees γaAnd γbDifferent；
Step 3: according to the modulated pulse signal as characterized above submodule to modular multilevel DC-DC converter Carry out switching state control.
Preferably, described step 1, the phase shifting angle of each submodule modulation pulse is symmetrical about brachium pontis axis of symmetry, phase shift Angle sequence θ1To θNFor about zero point-symmetric monotone-increasing sequence.
Preferably, described step 2, between the modulated pulse signal of upper and lower bridge arm, introduce phase shifting angle, for different facies units Upper and lower bridge arm between use different phase shifting angle.
Preferably, described step 3, combining step 1 and step 2 form the phase shifting angle of all submodules modulation pulse, generate During modulation pulse, in digitial controller FPGA, take to regulate carrier phase realize phase shift.
Compared with prior art, the present invention has a following beneficial effect:
The present invention proposes the modulation scheme of phase shift between a kind of brachium pontis, at each bridge of modular multilevel DC-DC converter Introduce phase shifting angle between arm, generate edge step number standard two level waveforms as 4N+1 with this AC, reduce AC further Dv/dt and the insulation stress of transformator.It addition, modulation scheme proposed by the invention forms power stream between upper and lower bridge arm, for The bridge arm voltage of modular multilevel DC-DC converter controls to provide degree of freedom.
To sum up, the present invention generates the most accurate two level waveforms of step number at AC, reduces the electricity of AC further Buckling rate, reduces electromagnetic interference, alleviates the higher harmonic content of alternating voltage simultaneously and the insulation to transformator is impacted.
Accompanying drawing explanation
By the detailed description non-limiting example made with reference to the following drawings of reading, the further feature of the present invention, Purpose and advantage will become more apparent upon:
Fig. 1 is the circuit structure diagram of existing modular multilevel DC-DC converter；
Fig. 2 is that existing modular multilevel DC-DC converter realizes accurate two level by pulse phase shifting modulation between submodule Modulation scheme；
Fig. 3 be the inventive method brachium pontis between phase shift modulation schematic diagram；
Actual measurement brachium pontis transient voltage waveform figure when Fig. 4 is for using the inventive method；
AC voltage and current waveform when Fig. 5 is for using the inventive method.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following example will assist in the technology of this area Personnel are further appreciated by the present invention, but limit the present invention the most in any form.It should be pointed out that, the ordinary skill to this area For personnel, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement.These broadly fall into the present invention Protection domain.
As it is shown in figure 1, isolated form modular multilevel DC-DC converter, build experimental prototype and carry out verification experimental verification, at sample In machine, respectively containing four submodules in former secondary MMC brachium pontis, input and output rated voltage is 200V, and it is 1:1 that isolation becomes no-load voltage ratio, often Individual submodule rated voltage is 50V, and AC frequency is 3kHz, the transmission merit of isolated form modular multilevel DC-DC converter Rate is 4.5kW.
Fig. 2 is that existing modular multilevel DC-DC converter realizes accurate two level by pulse phase shifting modulation between submodule Modulation scheme；Fig. 2 show modulation pulse and synthetic waveform, the S of A branch road upper and lower bridge arm when using this modulation scheme1To SNFor respectively The modulation pulse of submodule, general term S in individual brachium pontisNDuring equal to 1, representation module puts into, representation module excision during equal to 0；θ1To θN Corresponding to each modulation pulsion phase phase shifting angle to axis of symmetry；In each brachium pontis, the modulation pulse of submodule is symmetrical, therefore Instantaneous voltage input by each brachium pontis be step number be that standard two level waveforms of N+1 (N is brachium pontis submodule number) is (in A phase Bridge arm voltage uau)；This modulation scheme uses upper and lower bridge arm pulse complimentary fashion, and therefore generating ladder at AC is the standard of N+1 Two level waveforms are (such as primary voltage of transformer upo)。
The present invention is directed to existing modular multilevel DC-DC converter (ratio is as shown in Figure 1), in conjunction with existing submodule arteries and veins Phase shift modulation between punching, generates the most accurate two level waveforms of step number at AC, reduces the change in voltage of AC further Rate, reduces electromagnetic interference, alleviates the higher harmonic content of alternating voltage simultaneously and the insulation to transformator is impacted.Concrete reality Execute details and principle is described in detail as follows.
In conjunction with the operation principle of MMC, can obtain around A branch road row KVL equation in FIG:
u a N = 1 2 V d c 1 - u a u - 1 2 ( L p + M p ) di d c 1 d t - 1 2 ( L p - M p ) di p d t u a N = - 1 2 V d c 1 + u a l + 1 2 ( L p + M p ) di d c 1 d t - 1 2 ( L p - M p ) di p d t - - - ( 1 )
The most each physical quantity such as Fig. 1 is marked, Vdc1For DC voltage, idc1For DC current, ipFor former limit alternating current, uauFor brachium pontis instantaneous input voltage, u on A branch roadalFor brachium pontis instantaneous input voltage, L under A branch roadpSelf-inductance for coupling inductance MpFor mutual induction amount, uaNPhase voltage is exported for A phase；It is by DC current idc1Time is differentiated,It is by alternating current ip Time is differentiated；
Abbreviation formula (1) can obtain:
u a N = 1 2 ( u a l - u a u ) - 1 2 ( L p - M p ) di p d t - - - ( 2 )
In like manner, B phase is also had
u b N = 1 2 ( u b l - u b u ) + 1 2 ( L p - M p ) di p d t - - - ( 3 )
Formula (2) and formula (3) left and right sides are subtracted each other can be in the hope of the original edge voltage u of transformatorp:
u p = u a N - u b N = 1 2 [ ( u a l - u a u ) - ( u b l - u b u ) ] - ( L p - M p ) di p d t - - - ( 4 )
On the right side of in formula (4), last changes with alternating current, if by the leakage inductance (L of coupling inductancep-Mp) be equivalent to be The series impedance of transformation, this can be regarded the voltage drop in series impedance as, therefore can define the unloaded Electro dynamic of transformer primary side Gesture is:
u p o = 1 2 [ ( u a l - u a u ) - ( u b l - u b u ) ] - - - ( 5 )
The level number instantaneous input voltage u by each brachium pontis of former limit alternating voltage is can be seen that from formula (5)au, ual, ubu, ublTogether decide on.
Move between brachium pontis as it is shown on figure 3, the present invention proposes to introduce in the modulated process of modular multilevel DC-DC converter Phase angle, uses different phase shifting angle between the upper and lower bridge arm for different facies units.With in the symmetry of A phase upper and lower bridge arm modulation pulse Phase shifting angle γ is introduced between the hearta, modulate at the upper and lower bridge arm of B phase and introduce phase shifting angle γ between the symmetrical centre of pulseb, so will The upper and lower bridge arm instantaneous voltage dislocation of modular multilevel DC-DC converter can be introduced.Assume capacitance voltage by stability contorting, Convolution (5) can draw the instantaneous input voltage of each brachium pontis, differential voltage and standard two level waveforms in AC synthesis thereof. It can be seen that the dislocation effect produced due to phase shifting angle between brachium pontis, in conjunction with the interpulse phase shift modulation of existing submodule, Ke Yi AC generates standard two level waveforms that step number is 4N+1, and the height of each ladder only has the 1/4 of submodule voltage, this It is greatly lowered the dv/dt of AC, reduces electromagnetic interference, alleviate the higher harmonic content of alternating voltage and right simultaneously The insulation impact of transformator.Concrete, the present invention forms the phase shifting angle of all submodules modulation pulse, when generating modulation pulse, Can take to regulate carrier phase in digitial controller FPGA and realize phase shift.
Actual measurement brachium pontis transient voltage waveform when Fig. 4 is for using pulse phase shifting modulator approach between brachium pontis of the present invention, it can be seen that Generate, when using pulse phase shifting between submodule, the standard two level bridge arm voltage that step number is N+1 (step number shown in figure is 5), It is similar with analysis that the method proposed introduces dislocation effect between bridge arm voltage.
Actual measurement voltage current waveform when Fig. 5 is for using pulse phase shifting modulator approach between brachium pontis of the present invention, it can be seen that handing over Stream side generates standard two piezoelectric voltage that step number is 4N+1 (step number shown in figure is 17).Alternating voltage is largely put down Sliding, effectively reduce voltage change ratio and alternating voltage and the insulation of transformator is impacted.
The present invention is a kind of to modulate pulse between brachium pontis and introduce phase shifting angle with the modulation of double AC staircase waveform level number Method, generates the most accurate two level waveforms of step number at AC, reduces the voltage change ratio of AC further, reduces electricity Magnetic disturbance, alleviates the higher harmonic content of alternating voltage simultaneously and the insulation to transformator is impacted.Above experimental waveform is verified The feasibility of the present invention and effectiveness.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in above-mentioned Particular implementation, those skilled in the art can make various deformation or amendment within the scope of the claims, this not shadow Ring the flesh and blood of the present invention.

Claims (5)

1. phase shift modulation method between the brachium pontis of an isolated form modular multilevel DC-DC converter, it is characterised in that described side Method introduces phase shifting angle between each brachium pontis of modular multilevel DC-DC converter, generates edge step number as 4N+ with this AC Standard two level waveforms of 1, N is brachium pontis submodule number.
Phase shift modulation method between the brachium pontis of isolated form modular multilevel DC-DC converter the most according to claim 1, its Being characterised by, described method comprises the steps:
Step 1: introduce phase shift between the same brachium pontis Neutron module modulated pulse signal of modular multilevel DC-DC converter Angle, with sequence θ1To θNRepresenting, each phase shifting angle is symmetrical about brachium pontis axis of symmetry；
Step 2: introduce phase shifting angle, former limit A, B between the modulated pulse signal of modular multilevel DC-DC converter upper and lower bridge arm Phase shifting angle with sequence γ between phase upper and lower bridge armaTo γbRepresent, modulated process guarantees γaAnd γbDifferent；
Step 3: the submodule of modular multilevel DC-DC converter is carried out according to modulated pulse signal as characterized above Switching state controls.
Phase shift modulation method between the brachium pontis of isolated form modular multilevel DC-DC converter the most according to claim 2, its It is characterised by, described step 1: the phase shifting angle of each submodule modulation pulse is symmetrical about brachium pontis axis of symmetry, phase shifting angle sequence θ1To θNFor about zero point-symmetric monotone-increasing sequence.
Phase shift modulation method between the brachium pontis of isolated form modular multilevel DC-DC converter the most according to claim 2, its It is characterised by, described step 2: between the modulated pulse signal of upper and lower bridge arm, introduce phase shifting angle, and upper for different facies units Different phase shifting angle is used between lower brachium pontis.
Phase shift modulation method between the brachium pontis of isolated form modular multilevel DC-DC converter the most according to claim 2, its It is characterised by, described step 3: combining step 1 and step 2 form the phase shifting angle of all submodules modulation pulse, generates modulation arteries and veins When rushing, in digitial controller FPGA, take to regulate carrier phase realize phase shift.
CN201610566296.2A 2016-07-18 2016-07-18 Phase shift modulation method between the bridge arm of isolated form modular multilevel DC-DC converter Active CN106208704B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3772812A1 (en) * 2019-08-07 2021-02-10 ABB Schweiz AG Control of an icbt converter

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Publication number Priority date Publication date Assignee Title
CN102594192A (en) * 2010-11-30 2012-07-18 中国南方电网有限责任公司电网技术研究中心 Step wave pulse width modulation method based on nonlinear programming
CN103199729A (en) * 2013-04-10 2013-07-10 国家电网公司 Modularization multi-level converter submodule grouping stair wave modulation method
US20150124506A1 (en) * 2013-11-07 2015-05-07 Ashish Sahoo Modular converter with multilevel submodules
CN105356780A (en) * 2015-10-23 2016-02-24 南方电网科学研究院有限责任公司 Modulation method and system for modularized multi-level current converter with mixed sub modules
CN105450031A (en) * 2015-12-21 2016-03-30 中国电力科学研究院 Modulation strategy of DC (Direct Current)-DC convertor and submodule voltage-sharing method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102594192A (en) * 2010-11-30 2012-07-18 中国南方电网有限责任公司电网技术研究中心 Step wave pulse width modulation method based on nonlinear programming
CN103199729A (en) * 2013-04-10 2013-07-10 国家电网公司 Modularization multi-level converter submodule grouping stair wave modulation method
US20150124506A1 (en) * 2013-11-07 2015-05-07 Ashish Sahoo Modular converter with multilevel submodules
CN105356780A (en) * 2015-10-23 2016-02-24 南方电网科学研究院有限责任公司 Modulation method and system for modularized multi-level current converter with mixed sub modules
CN105450031A (en) * 2015-12-21 2016-03-30 中国电力科学研究院 Modulation strategy of DC (Direct Current)-DC convertor and submodule voltage-sharing method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3772812A1 (en) * 2019-08-07 2021-02-10 ABB Schweiz AG Control of an icbt converter
WO2021023807A1 (en) * 2019-08-07 2021-02-11 Abb Schweiz Ag Control of an icbt converter
CN114375541A (en) * 2019-08-07 2022-04-19 Abb瑞士股份有限公司 Control of ICBT converters
US11705804B2 (en) 2019-08-07 2023-07-18 Abb Schweiz Ag Control of an ICBT converter
CN114375541B (en) * 2019-08-07 2024-04-16 Abb瑞士股份有限公司 ICBT converter control

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