US3867643A - Electric power converter - Google Patents

Electric power converter Download PDF

Info

Publication number
US3867643A
US3867643A US432939A US43293974A US3867643A US 3867643 A US3867643 A US 3867643A US 432939 A US432939 A US 432939A US 43293974 A US43293974 A US 43293974A US 3867643 A US3867643 A US 3867643A
Authority
US
United States
Prior art keywords
stage
output
switch means
switch
supply voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US432939A
Other languages
English (en)
Inventor
Richard H Baker
Lawrence H Bannister
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Massachusetts Institute of Technology
Original Assignee
Massachusetts Institute of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Massachusetts Institute of Technology filed Critical Massachusetts Institute of Technology
Priority to US432939A priority Critical patent/US3867643A/en
Priority to US515290A priority patent/US3909685A/en
Priority to DE19752500275 priority patent/DE2500275A1/de
Priority to FR7500845A priority patent/FR2258041B3/fr
Priority to JP50006003A priority patent/JPS50107422A/ja
Application granted granted Critical
Publication of US3867643A publication Critical patent/US3867643A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483—Converters with outputs that each can have more than two voltages levels
    • H02M7/49—Combination of the output voltage waveforms of a plurality of converters

Definitions

  • the present invention relates to electric energy converters wherein a number of electric energy sources or electric energy storage elements are interconnected in a programmed fashion to cause an alternating current, or some other variable current, to flow in a load.
  • any power system using such devices must be able to combine many of the individual electric generating devices efficiently, and must be able to convert direct current into alternating current; and, further, the converter must yield a low impedance, quasi-sinusoidal output with small harmonic distortion.
  • a further object is to provide a converter wherein a number of electric generators or storage elements, each providing a quasi-constant voltage, are combined to furnish a time varying output voltage.
  • a further object is to provide a converter wherein a number of quasi-constant voltage sources are combined to furnish an alternating voltage output.
  • a further object is to provide a converter wherein a number of quasi-constant voltage sources are combined to cause an alternating current to flow in a load.
  • a further object is to provide a very efficient inverter.
  • a further object is to provide an inverter furnishing a quasi-sinusoidal output whose harmonic content is controllable.
  • a further object is to provide an electrical energyconverter having a low impedance output.
  • a further object is to provide an arbitrarily large voltage by combining a number of low voltage electric gen erators or storage elements.
  • a further object is to provide a converter having a large power output capability by combining a number of low power electric generators.
  • a further object is to provide a converter wherein alternating current of one frequency is converted to alternating current of another frequency.
  • a further object is to provide a voltage converter system that can be assembled from a multiplicity of similar modules.
  • a further object is to provide an electrical power converter wherein great flexibility is permitted in the combination of individual devices and the manner in which these devices are combined to provide an output.
  • each stage includes in combination supply voltage means, first bilateral solid-state switch means connected between the supply voltage means and one terminal of the stage, and second bilateral solid-state switch means connected between the supply voltage means and another terminal of the stage.
  • One terminal acts as input to the stage at one state of operation of the stage and the other terminal operates as output during said one state; the roles of the two terminals are reversed at another state of operation of the stage.
  • the first switch means and the second switch means act in combination to connect one side or the other of the supply voltage means to either terminal as alternate conditions of stage operation or to bypass the supply voltage means.
  • FIG. 1- is a schematic circuit diagram partly in block diagram form, showing a seven-stage system which is adapted to combine the seven batteries shown, one per stage, in a way that will connect across the load shown an alternating voltage;
  • FIGS. 2A and 28 combined show an alternating single-phase voltage that may be provided across a load by the system of FIG. 1, FIG. ZA showing the positivegoing voltage as a series of voltage steps, first increasing and then decreasing and FIG. 28 showing a negative-going voltage as a series of voltage steps, first decreasing and then increasing;
  • FIGS. 3A and 3B show a logical sequence in which switch elements in FIG. 1- may be actuated to furnish the waveforms shown in FIGS. 2A and 28, respectively;
  • FIG. 4 is a schematic circuit diagram partly in block diagram form, showinga two-stage system somewhat similar in arrangement and purpose to that shown in FIG. 1;
  • FIG. 5 is a voltage waveform that can be provided by the system of FIG. 4;
  • FIG. 6 shows a logical sequence in which switch elements in FIG. 4 may be actuated to furnish the waveform shown in FIG. 5;
  • FIG. 7 is a schematic circuit diagram partly in block diagram form of a three-stage system somewhat similar in arrangement and purpose to that shown in FIG. 1;
  • FIG. 8 is a schematic circuit diagram in block diagram fonn showing a six-stage system which is adapted to combine six batteries, one per stage, in three parallel strings of two stages each in a way that will connect across a load an alternating voltage;
  • FIG. 9 is a schematic circuit diagram of one practical realization of a single stage of the system of FIG. I.
  • a direct current to alternating current inve'rter system 101A includes a set of seven stages designated 110 that function under the control of a logic control 103 to cause an alternating current flow in'a load 102. It should be noted that the choice of seven stages for this illustration and description is somewhat arbitrary; as will be discussed later, a smaller of larger number of stages may be used in particular apparatus.
  • the system 101A has seven stages, stage 1 through stage 7, each stage including a battery and first and second switch means, one such switch means at one terminal of the stage and the other such switch means at the other terminal of the stage.
  • Each stage has two terminals but, as will become apparent in the discussion to follow, neither can be called an input terminal nor' an output terminal because the roles change (or can change) in the course of each cycle of the system operation.
  • the first switch means comprises the left hand switching units in each stage and'the second switch means comprises the right hand switching units in each stage.
  • the first switch means in each stage comprises switches S 8 S S and the second switch means in each stage comprises switches S ,,.S S S
  • the first switch means in stage 1 comprises a set of two semiconductor switches
  • the switches S and S and the second switch means in stage 1 comprises a further set of two semiconductor switches S and S
  • One switch in each set is connected to carry electric current from the positive terminal of a battery B to one or the other of the stage terminals designated T and-T
  • the other switch in each set is connected to carry electric current from the negative terminal of the battery B to one or the other of the two terminals T and T
  • the positive terminal of the battery B may be connected to either of the stage terminals T,, or T,, and at the same time the negative terminal of the battery 13, may be connected to the other stage terminal T or T, respectively.
  • the battery B can be bypassed altogether by making switches S and S, conduct simultaneously while switches S and S are nonconducting or by making switches 5 and S conduct simultaneously while switches S and 5 are non
  • stage 1 the other stages of the system 101A are similar to stage 1 and have like numbered parts and that these other stages can be operated in a fashion similar to that described above in connection with stage 1.
  • V are the voltages provided by the batteriesshown at B B B,, respectively.
  • Other combinations of conducting switches will yield other potentials between the terminal T and the terminal T up to, and including, the peak values:
  • the system 101A supplies a quasi-sinusoidal voltage wave that includes the two half cycles shown in FIGS. 2A and 2B, respectively, under the control of the logic control 103.
  • Thelogical control to give the voltage waves numbered 104 and 105 can be provided in the switching sequences shown in FIGS. 3A and 3B.
  • FIGS. 3A and 3B are chosen primarily to simplify an explanation of the operation of system 101A.
  • a close study of the tabulations of FIGS. 3A and 38 will show that, in many cases, it will be better to use a different sequence to achieve the same end result.
  • the logical sequence shown is one in which the battery B carries the heaviest burden of supplying the load 102 because it is in series with the load most of the time whereas the battery B carries the lightest burden because it is in series with the load for only two units of time and is bypassed for-the other26 units of time in the 28 unit cycle shown in FIGS. 2A and 2B.
  • switches 5 and S are ON most of the time whereas switches S and S are OFF most of the time. Because the switches are, in fact,;semiconductor switches which always dissipate some powerin the formof waste heat, it will usually be advantageous to choose a switching sequence that makes the duty cycle for all switches approximately equal and so divides the burden of waste heat disposal more evenly among the various, switches.
  • the electric power source in each stage of the system 101A has been shown and referred to, respectively, as a battery.
  • This element in fact, can be any one of the well known types of primary or secondary electric batteries. But, in many uses contemplated for thepresent invention, it will be advantageous to use some other form of electric energy source or storage element.
  • the elements designated B B B in FIG. 1 will be fuel cells, solar cells, or thermoelectric devices which convert chemical, radiation, or thermal energy into electrical energy, the system 101A being used to combine many of these devices in an arrangement furnishing high power alternating current to a load even though the individual electric sources provide only low power direct current.
  • a system 1018 includes two stages, stage 1 and stage 2, that function under the control of logic control 103 to furnish an alternating current to load 102.
  • the system 101B is used to furnish substantial power to a load, for example, if it is used todrive an electric motor to provide variable speed by virtue of varying the frequency of the alternating current sup plied to the load, the batteries will discharge and therefore will require recharging.
  • the battery B is charged by a transformer 110 through diodes 112 and 113 and the battery B' is charged by a transformer 111 through diodes 114 and 115.
  • electric power is derived from an alternating current supply connected to the primary of the transformers 110 and 111; this can be any convenient source; for example, it can be the conventional 60 Hertz power distribution system.
  • the frequency of the alternating current supplied to the load is independently controlled by the logic control 103; so in this arrangement the system 1018 serves as a frequency converter to convert alternating current of one frequency into alternating current of another frequency.
  • the switches S S etc. can be effected through respective memories M M1 2, etc., under appropriate programming from the logic control 103.
  • the memories M M etc. can be, for example, the bistable circuits shown in said US. Pat. No. 3,748,492 but they can be monostable or tristable as well.
  • the signals from logic circuit 103 can be light signals or can be signals fed through appropriate diodes as shown, for example, in said application Ser. No. 426,265, or some other appropriate coupling can be employed.
  • the logic control 103 in this as well as the other embodiments herein can be a register or a digital control. See FIG. 1, US. Pat. No. 3,705,391 which shows, among other things, a system for converting analog signals to digital signals and vice versa; the input to systems like 101A and 1018 can be the binary type signal shown in that patent. It will be appreciated that the frequency of the waveform 108 later discussed, can be modified by changing the rate of sequencing and, in a digitally controlled system, this can be done by changing the frequency of a control clock.
  • the constant voltage provided by an electrical energy source or storage element B' should be about 2Vp/3 and the voltage provided by element B' should be about Vp/3, where V,, is the peak voltage of the sine wave 109 in FIG. 5. It will be appreciated that an identical waveform can be furnished if the voltage of the element B is about Vp/3 and the voltage of the element 8, is about 2Vp/3 and if the switching sequence is modified appropriately.
  • an output wave 108 has been provided with a total harmonic content of less than 10 percent and a third harmonic content of less than 2 percent.
  • the electric power system shown at 101C in FIG. 7 functions similarly to the systems 101A and 101B and, in particular, to the system 1018 in that the electric energy source of storage elements designated 8,, B and B in FIG. 7 have terminal voltages, respectively, of about Vp/Z, Vp/3, and Vp/6.
  • the three-stage system 101C can be used in circumstances where harmonic distortion requirements are more stringent than those for which the system 1018 may be used.
  • stages like those shown as parts of 101A, 1018, and 101C can be part of a system that includes multiple parallel stages like those shown as parts of system 101D in FIG. 8. And it will be appreciated that these multiple parallel stages can be sequenced in a manner which permits the energy source or storage elements to rest or be recharged between intervals of use. And it will be appreciated, further, that this permits the combination of many individual source or storage elements so that substantial power can be furnished to a load even though the individual source or storage element can provide only low power. It will be further appreciated that the stages in FIG. 8 can be sequenced, for example, in a three-phase manner to furnish a three-phase power supply to a load which might be, for example, a three-phase motor.
  • FIG. 9 A detailed schematic of one practical implementation of a single stage is shown as FIG. 9. Stages like that shown in FIG. 9 have been used to implement systems like those shown at 101A, 1018, and 101C. Again, the electric energy source or storage means shown in FIG. 9 is a battery and, in fact, batteries have been used in the'systems that have been build, tested, and analyzed because, among other things, the use of batteries facilitates the construction of the experimental apparatus.
  • Single stage X in FIG. 9 shows in detail one stage of an actual system like the seven-stage system 101A employed to provide a voltage waveform like that shown in FIGS. 2A and 2B. In FIG. 9, the portion of the stage to the left of points S and S is a mirror image of the portion to the right of points S and S'.
  • the labeling used is consistent with that fact in that the elements of the right-hand part of stage X are merely the primed counterpart of the elements of the left-hand part.
  • the bilateral semiconductor switches between terminals T,, and T and labeled 8 5 5 and S perform the functoin of the switches S S and S respectively.
  • the bilateral current carrying capacity of the switch S for example, is the result of the combi nation of a transistor 0 and a diode D whose operation is discussed in detail in said US. Pat. No.
  • transistors Q Q Q and Q and their primed counterparts are lowpower transistors
  • transistors Q Q Q Q and Q and their primed counterparts are high-power transistors
  • diodes D and D and their primed counterports are high-power diodes
  • D is a high-current diode.
  • D and D are low-power diodes.
  • the diodes labeled D and D are light sensitive diodes which act to control or switch the stage X from one state to the other of its various states in response to a logic control.
  • the signal input to diodes D and D is light the source of which is-light emitting diodes, under the control of an external control.
  • the supply voltage means of the stage is the battery shown at B a battery B acts to bias the various transistors in the stage.
  • the battery B has terminals Y and Z, the terminal Z being connected to ground G which in this situation is merely a common connection.
  • a circuit can be made from the terminal T the transistor O to the terminal Z thence from the terminal Y through Q to the terminal T
  • Reversal of the current in stage X can be from the terminal T O through the transistor O to the terminal Z, thence from the terminal Y through the transistor O to the terminal T,
  • Bypassing the battery B can be accomplished by having both switches S, and S ON with switches S and S OFFor vice versa.
  • switches S and S X operate as a pair; that is, the switch 5 is ON when the switch S is OFF and vice versa; similarly, the switches S and S operate as a pair; But the switch-pair S S is independent of the switch-pair 8 and 8 ON- OFF switching of the former being effected by the diode D and of the latterby the diode D
  • a switch is ON when the transistor therein is conducting and OFF when the transistor is nonconducting. It should be apparent, however, that current may in fact pass through the diode of the switches when the transistor is non-conducting, as above ex.- plained.
  • the light sensitive diode D When the light sensitive diode D has light shining on it, it acts as a low-impedance (in fact it is.a small area solar cell) and its cathode is negative with respect to its anode, A negative potential at the base of the transistor O causes both the transistors O and O to be OFF. When the transistor O is OFF, it will not accept current and therefore the current flowing through the resistor R will flow into the base of the transistor Q causing it to conduct. When the transistor Q conducts the PNP transistor 0 conducts which causes the transistor O to conduct; the switch S is ON.
  • the diode D causes the control circuits of the right hand side, that is, the elements 0' 0' etc., to control the switches S and S in the same manner as described above for the left side.
  • the battery B' is used in common with both the left and the right control sections.
  • the diodes D and D are used as bias elements for the transistors Q and Q For example, when the transistor O is conducting, itscollector current must flow through the diode D which causes the NPN transitor O to be back biased, that is, held in the OFF state.
  • the control section for the switches S S consists of the battery B (for power to run the control circuits) and the electronic components R D R Q Q R D R Q6, R R Q R R Q and D
  • the circuitry operates in the manner now explained. If it is supposed that the light sensitive diode D, had no light shining on it, then it represents a high impedance (i.e., an open circuit) and current will flow through the resistor R from the positive terminalof B' -(+l2v) into the base of the NPN transistor Q causing it to conduct. When the transistor 0, conducts, the transistor Q also conducts and therefore the collector of the transistor Q (bottom of resistor R is at ground and therefore the transistor 0., is rendered non-conducting.
  • the transistor Q When the transistor Q, is OFF (non-conducting) then the transistors Q and 0 are OFF and switch S is used to be OFF, that is, it represents a high impedance or openswitch condition.
  • the transistor O When the transistor O is ON, the transistor 0 is OFF and cannot accept current at its collector terminal; the therefore the current flowing down through the resistor R goes into the base terminal of the transistor Q which causes both the transistors Q and O to be ON (conducting).
  • the transistor Q conducts the switch Sg is ON.
  • An electric power system comprising a plurality of stages connected in cascade, each stage including, in combination: supply voltage means; first bilateral solidstate switch means connected between the supply voltage means and one terminal of the stage; and second bilateral solid-state switch means connected between the supply voltage means and another terminal of the stage, one terminal acting as input to the stage at one state of operation of the stage and the other terminal operating as output during said one state, the roles of the two terminals being reversed at another state of operation of the stage, the first switch means and the second switch means acting in combination to connect one side or the other of the supply voltage means to either terminal as alternate conditions of stage operation or to bypass the supply voltage means, 7 I
  • An electric power system as claimed in claim 2 that further includes logic control means to establish logical sequencing of the first switch means and the second switch means to provide an a-c output from the system, said a-c output being effected by combining the d-c sources in a determined sequence.
  • first switch means in each stage comprises a set of two semiconductor switches and the second switch means in each stage comprises a set of two semiconductor switches, one switch in each set acting to connect the positive side of the d-c source to one or the other of the two terminals of the stage and the other switch of each set acting to connect the negative side of the d-c source to one or the other of the two terminals of the stage.
  • An'electric system as claimed in claim 5 in which the logic control means switches each of the four switches in a stage individually, thereby connecting the positive side of the d-c source or the negative side of the d-c source in each stage to either terminal or effecting a bypass of the dc source in a stage to provide an a-c system output.
  • An electric system as claimed in claim 7 that consists of two stages connected in cascade, in which the d-c voltage of the source in one stage is about 2Vp/3, where V,, is the peak voltage of the sine wave, and in which the d-c voltage of the source in the other stage is about Vp/3.
  • An electric power system as claimed in claim 10 in which the sequencing pattern for one cycle is stage is about V p/6, where V is the peak voltage of the sine wave.
  • An electric power system as claimed in claim 7 that comprises more than three stages connected in cascade. M n I W M i1.
  • Kn electric power system stage having an input and an output, said stage including: supply voltage means; first bilateral solid-state switch means; and second bilateral solid-state switch means, the first switch means and the second switch means acting in combination to connect the supply voltage means between the input and the output and to effect a bypass of the supply voltage means as well as to effect reversal of the polarity of the supply voltage means connection within the stage, thereby to effect a change of roles of the input and the output of the system as alternate conditions of system operation.
  • An electric'power system stage having an input and an output, said stage including: supply voltage means; first bilateral switch means; and second bilateral switch means, the first switch means and the second switch means acting in combination to connect the supply voltage means between the input and the output and to effect a bypass of the supply voltage means as well as to effect reversal of the polarity of the supply voltage means connection within the stage, thereby to effect a change of roles of the input and the output of the system as alternate conditions of system operation.
  • An electric system that comprises a plurality of stages connected in cascade, each stage of the plurality of stages having an input and an output and including supply voltage means, first bilateral switch means, and
  • the second bilateral switch means acting in combination such that the input and output are connected together and therefore at equal potential or that the supply voltage means is connected between the input and the output such that the output is positive with respect to the input or the output is negative with respect to the input as conditions of system operations.
  • An electric power system as claimed in claim 7 that consists of three stages connected in cascade, in which the d-c voltage ofthe source in one stage is about Vp/Z, in another stage is about Vp/3 and in the other variable frequency alternating current and that further includes control means that controls the first bilateral switch means and the second bilateral switch means to supply as system output an alternating current of another frequency.
  • Electrical apparatus that comprises a plurality of electrical systems connected in cascade, each said system comprising a plurality of stages connected in cascade, each of the plurality of stages having an input and an output and including supply voltage means, first switch means, and second switch means, means whereby the first switch means and the second switch means are operable to connect the supply voltage means between the input and the output of the stage such that the input and the output can be at equal potential or the output can be positive with respect to the input or the output can be negative with respect to the input.
US432939A 1974-01-14 1974-01-14 Electric power converter Expired - Lifetime US3867643A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US432939A US3867643A (en) 1974-01-14 1974-01-14 Electric power converter
US515290A US3909685A (en) 1974-01-14 1974-10-16 Electrical apparatus
DE19752500275 DE2500275A1 (de) 1974-01-14 1975-01-04 Elektrisches versorgungssystem
FR7500845A FR2258041B3 (ja) 1974-01-14 1975-01-13
JP50006003A JPS50107422A (ja) 1974-01-14 1975-01-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US432939A US3867643A (en) 1974-01-14 1974-01-14 Electric power converter

Publications (1)

Publication Number Publication Date
US3867643A true US3867643A (en) 1975-02-18

Family

ID=23718180

Family Applications (1)

Application Number Title Priority Date Filing Date
US432939A Expired - Lifetime US3867643A (en) 1974-01-14 1974-01-14 Electric power converter

Country Status (4)

Country Link
US (1) US3867643A (ja)
JP (1) JPS50107422A (ja)
DE (1) DE2500275A1 (ja)
FR (1) FR2258041B3 (ja)

Cited By (84)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909685A (en) * 1974-01-14 1975-09-30 Massachusetts Inst Technology Electrical apparatus
US4117364A (en) * 1976-05-14 1978-09-26 Massachusetts Institute Of Technology Voltage waveform synthesizer and a system that includes the same
US4131938A (en) * 1977-04-15 1978-12-26 Westinghouse Electric Corp. Digital chopper regulator
FR2407602A1 (fr) * 1977-10-31 1979-05-25 Exxon Research Engineering Co Convertisseur de tension
DE2907989A1 (de) * 1978-03-02 1979-09-13 Philips Nv Undulator mit einstellbarer wellenform
US4270163A (en) * 1978-09-21 1981-05-26 Exxon Research & Engineering Company Bridge converter circuit
EP0042235A1 (en) * 1980-06-13 1981-12-23 Dow Corning Corporation DC to AC inverter
EP0085430A2 (de) * 1982-02-03 1983-08-10 Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. Wechselrichter zur Umformung einer Gleichspannung in eine Wechselspannung
US4403197A (en) * 1979-11-30 1983-09-06 Harris Corporation Amplifier employing digital modulator circuit
US4580111A (en) * 1981-12-24 1986-04-01 Harris Corporation Amplitude modulation using digitally selected carrier amplifiers
US4591965A (en) * 1984-10-19 1986-05-27 Dickerson Arthur F Inverter for use with solar arrays
US4680690A (en) * 1984-10-19 1987-07-14 Dickerson Arthur F Inverter for use with solar arrays
US4737901A (en) * 1984-02-24 1988-04-12 Pacific Power Source Corp. High efficiency power source for reactive loads
US4956762A (en) * 1989-01-13 1990-09-11 S-V Technology, Inc Controlled switched bridge-based power reconfiguring apparatus
US5276603A (en) * 1990-05-03 1994-01-04 Crown International, Inc. Sixteen level power supply with asynchronous controller
US5438503A (en) * 1992-08-03 1995-08-01 Crown International, Inc. Slew rate control in a multi-level switch
US5510971A (en) * 1993-05-06 1996-04-23 Matra Transport Safety control device and process with analog power output
WO1996014686A1 (en) * 1994-11-04 1996-05-17 Gec Alsthom Limited Multilevel convertor
US5761058A (en) * 1995-07-26 1998-06-02 Matsushita Electric Works, Ltd. Power converter apparatus for a discharge lamp
WO1998023239A1 (fr) * 1996-11-23 1998-06-04 Ichiro Fujioka Fauteuil roulant assiste par un moteur electrique et mecanisme d'actionnement de ce dernier
EP0848486A2 (de) * 1996-12-13 1998-06-17 ABB Daimler-Benz Transportation (Technology) GmbH Pulsweitenmodulationsverfahren für in Serie geschaltete 2-Punkt-Umrichter
US5841645A (en) * 1996-06-03 1998-11-24 Kabushiki Kaisha Toshiba Multi-level inverter with low loss snubbing circuits
US5991179A (en) * 1997-03-10 1999-11-23 Siemens Aktiengesellschaft Power amplifier with multiple, switched output stages, and method and driver for driving the output stages using different pattern signals groups
US6075350A (en) * 1998-04-24 2000-06-13 Lockheed Martin Energy Research Corporation Power line conditioner using cascade multilevel inverters for voltage regulation, reactive power correction, and harmonic filtering
US6111770A (en) * 1997-10-28 2000-08-29 Lockheed Martin Energy Research Corporation Auxiliary resonant DC tank converter
USRE37126E1 (en) 1995-09-14 2001-04-03 Lockheed Martin Energy Systems, Inc. Multilevel cascade voltage source inverter with seperate DC sources
US20060109694A1 (en) * 2004-11-24 2006-05-25 Peng Fang Z Auxiliary quasi-resonant dc tank electrical power converter
US20070194746A1 (en) * 2005-12-26 2007-08-23 Nissan Motor Co., Ltd. Electric power conversion apparatus
DE102007009217A1 (de) 2007-02-26 2008-08-28 Universität Bremen Verfahren zum programmgesteuerten Betrieb eines Frequenzumrichters
US20090085548A1 (en) * 2007-09-27 2009-04-02 Abb Schweiz Ag Converter circuit and method for operating such a converter circuit
US20090102288A1 (en) * 2007-10-17 2009-04-23 Edwin Arthur Blackmond Modular Power Supply
US20100142234A1 (en) * 2008-12-31 2010-06-10 Mehdi Abolhassani Partial regeneration in a multi-level power inverter
US20100213921A1 (en) * 2009-02-26 2010-08-26 Mehdi Abolhassani Pre-Charging An Inverter Using An Auxiliary Winding
EP2244368A1 (en) * 2009-04-23 2010-10-27 Mitsubishi Electric R&D Centre Europe B.V. Method and an apparatus for controlling the output voltage of a boost converter composed of plural bridge devices
US7830681B2 (en) 2008-09-24 2010-11-09 Teco-Westinghouse Motor Company Modular multi-pulse transformer rectifier for use in asymmetric multi-level power converter
US20100314937A1 (en) * 2009-06-11 2010-12-16 Jacobson Boris S Reconfigurable multi-cell power converter
WO2011073466A1 (es) 2009-12-18 2011-06-23 Ingeteam Technology, S.A. Convertidor modular basado en circuitos distribuidos multinivel de punto medio capacitivo
WO2011098117A1 (en) * 2010-02-09 2011-08-18 Areva T&D Uk Limited Converter for high voltage dc dc transmission
DE102010022043A1 (de) 2010-05-26 2011-12-01 Siemens Aktiengesellschaft Energiespeicher im Bereich der Elektroenergieübertragung und -verteilung
EP2422437A2 (en) * 2009-04-23 2012-02-29 Mitsubishi Electric R&D Centre Europe B.V. Method and an apparatus for controlling the output voltage of a boost converter
US8130501B2 (en) 2009-06-30 2012-03-06 Teco-Westinghouse Motor Company Pluggable power cell for an inverter
CN102428636A (zh) * 2009-04-23 2012-04-25 三菱电机研发中心欧洲有限公司 用于控制由多个桥接器件构成的升压转换器的开关的方法和设备
US8254076B2 (en) 2009-06-30 2012-08-28 Teco-Westinghouse Motor Company Providing modular power conversion
US8279640B2 (en) 2008-09-24 2012-10-02 Teco-Westinghouse Motor Company Modular multi-pulse transformer rectifier for use in symmetric multi-level power converter
US8575479B2 (en) 2009-06-30 2013-11-05 TECO—Westinghouse Motor Company Providing a transformer for an inverter
US8599591B2 (en) 2009-06-22 2013-12-03 Alstom Technology Ltd Converter
US8601190B2 (en) 2011-06-24 2013-12-03 Teco-Westinghouse Motor Company Providing multiple communication protocols for a control system having a master controller and a slave controller
US8711530B2 (en) 2009-06-30 2014-04-29 Teco-Westinghouse Motor Company Pluggable power cell for an inverter
US8861234B2 (en) 2009-06-15 2014-10-14 Alstom Technology Ltd Voltage source converter having chain link converter for use in high voltage DC transmission
WO2014040780A3 (de) * 2012-09-12 2014-10-16 Robert Bosch Gmbh Batteriemanagementsystem, batteriesystem, kraftfahrzeug und verfahren zur erzeugung einer periodischen wechselspannung ("batteriedirektinverter")
US8867244B2 (en) 2010-07-30 2014-10-21 Alstom Technology Ltd. HVDC converter including fullbridge cells for handling a DC side short circuit
US8867242B2 (en) 2010-04-15 2014-10-21 Alstom Technology Ltd Hybrid 2-level and multilevel HVDC converter
US8934268B2 (en) 2010-04-08 2015-01-13 Alstom Technology Ltd Power electronic converter for use in high voltage direct current power transmission
US8976526B2 (en) 2009-06-30 2015-03-10 Teco-Westinghouse Motor Company Providing a cooling system for a medium voltage drive system
US9065299B2 (en) 2010-06-18 2015-06-23 Alstom Technology Ltd Converter for HVDC transmission and reactive power compensation
US9130458B2 (en) 2010-03-15 2015-09-08 Alstom Technology Ltd. Static VAR compensator with multilevel converter
US9153374B2 (en) 2013-06-28 2015-10-06 Teco-Westinghouse Motor Company Cooling arrangements for drive systems
US9209693B2 (en) 2011-11-07 2015-12-08 Alstom Technology Ltd Control circuit for DC network to maintain zero net change in energy level
US9318974B2 (en) 2014-03-26 2016-04-19 Solaredge Technologies Ltd. Multi-level inverter with flying capacitor topology
US9350250B2 (en) 2011-06-08 2016-05-24 Alstom Technology Ltd. High voltage DC/DC converter with cascaded resonant tanks
US9350269B2 (en) 2009-07-31 2016-05-24 Alstom Technology Ltd. Configurable hybrid converter circuit
US9362848B2 (en) 2011-11-17 2016-06-07 Alstom Technology Ltd. Hybrid AC/DC converter for HVDC applications
US9363930B2 (en) 2013-03-11 2016-06-07 Teco-Westinghouse Motor Company Passive two phase cooling solution for low, medium and high voltage drive systems
US9420724B2 (en) 2014-11-04 2016-08-16 Ge Aviation Systems Llc Power converter assembly
US9479061B2 (en) 2011-08-01 2016-10-25 Alstom Technology Ltd. DC to DC converter assembly
US9680392B2 (en) 2014-05-13 2017-06-13 Lsis Co., Ltd. Modular multi-level converter
US9680385B2 (en) 2014-11-04 2017-06-13 Ge Aviation Systems Llc Power converter
US9780682B2 (en) 2015-10-05 2017-10-03 Resilient Power Systems, LLC Power management utilizing synchronous common coupling
US20170324352A1 (en) * 2014-11-12 2017-11-09 Panasonic Intellectual Property Management Co., Ltd. Power conversion device
US9943016B2 (en) 2014-11-04 2018-04-10 Ge Aviation Systems Llc Cooling structure
US9941813B2 (en) 2013-03-14 2018-04-10 Solaredge Technologies Ltd. High frequency multi-level inverter
US9954358B2 (en) 2012-03-01 2018-04-24 General Electric Technology Gmbh Control circuit
EP2807007B1 (en) 2012-01-26 2018-05-02 Cifa S.P.A. Truck mixer with a device to make the drum of the concrete mixer rotate and corresponding method
WO2018100322A1 (fr) 2016-12-02 2018-06-07 Supergrid Institute Convertisseur dc/dc pour réseaux électriques
EP2681797B1 (fr) 2011-03-02 2018-11-14 Commissariat à l'Énergie Atomique et aux Énergies Alternatives Batterie avec gestion individuelle des cellules
US10232730B2 (en) 2014-08-11 2019-03-19 Robert Bosch Gmbh Control of a secondary battery with battery cells which can be connected in series with one another
US10270356B2 (en) 2016-08-09 2019-04-23 Raytheon Company High voltage high frequency power converter
US10608545B2 (en) 2015-10-05 2020-03-31 Resilient Power Systems, LLC Power management utilizing synchronous common coupling
WO2020212572A1 (de) 2019-04-17 2020-10-22 instagrid GmbH Energiesparbetrieb für ein energieversorgungssystem mit batteriespeicher
GB2571721B (en) * 2018-03-05 2021-01-20 Ge Aviat Systems Ltd AC power source
DE102021101261A1 (de) 2021-01-21 2022-07-21 Technische Universität Kaiserslautern Kaskadierter modifizierter Halbbrücken-Konverter
EP4087087A2 (de) 2021-05-06 2022-11-09 Instagrid GmbH Energieversorgungssystem
DE102021111864A1 (de) 2021-05-06 2022-11-10 instagrid GmbH Energieversorgungssystem und Verfahren zum Laden eines Energieversorgungssystems
EP4135185A1 (en) 2021-08-11 2023-02-15 Technische Universität Kaiserslautern Lattice multilevel converter

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2330180A1 (fr) * 1975-10-31 1977-05-27 Labo Electronique Physique Dispositif pour la transformation de l'energie solaire en energie motrice
JPS59185174A (ja) * 1983-04-01 1984-10-20 Masanobu Fukuzumi 交流電源用インバ−タ出力回路
CN2164144Y (zh) * 1992-10-19 1994-05-04 杨泰和 低热损及无火花电池组阶梯式复电压操控装置
DE102012211953A1 (de) 2012-07-09 2014-01-09 Helmut Mack Pufferspeicher einer Gleichstromenergieerzeugungsanlage

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3748492A (en) * 1972-05-25 1973-07-24 Massachusetts Inst Technology Light-triggered electric power source

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3748492A (en) * 1972-05-25 1973-07-24 Massachusetts Inst Technology Light-triggered electric power source

Cited By (137)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909685A (en) * 1974-01-14 1975-09-30 Massachusetts Inst Technology Electrical apparatus
US4117364A (en) * 1976-05-14 1978-09-26 Massachusetts Institute Of Technology Voltage waveform synthesizer and a system that includes the same
US4131938A (en) * 1977-04-15 1978-12-26 Westinghouse Electric Corp. Digital chopper regulator
FR2407602A1 (fr) * 1977-10-31 1979-05-25 Exxon Research Engineering Co Convertisseur de tension
DE2907989A1 (de) * 1978-03-02 1979-09-13 Philips Nv Undulator mit einstellbarer wellenform
US4238820A (en) * 1978-03-02 1980-12-09 U.S. Philips Corporation Variable wave-form converter
US4270163A (en) * 1978-09-21 1981-05-26 Exxon Research & Engineering Company Bridge converter circuit
US4403197A (en) * 1979-11-30 1983-09-06 Harris Corporation Amplifier employing digital modulator circuit
EP0042235A1 (en) * 1980-06-13 1981-12-23 Dow Corning Corporation DC to AC inverter
US4580111A (en) * 1981-12-24 1986-04-01 Harris Corporation Amplitude modulation using digitally selected carrier amplifiers
EP0085430A2 (de) * 1982-02-03 1983-08-10 Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. Wechselrichter zur Umformung einer Gleichspannung in eine Wechselspannung
DE3203478A1 (de) * 1982-02-03 1983-08-11 Fraunhofer Ges Forschung Wechselrichter zur gleichspannungs-wechselspannungs-umformung
EP0085430A3 (en) * 1982-02-03 1984-09-12 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. D.c.-a.c. voltage conversion rectifier
US4737901A (en) * 1984-02-24 1988-04-12 Pacific Power Source Corp. High efficiency power source for reactive loads
US4680690A (en) * 1984-10-19 1987-07-14 Dickerson Arthur F Inverter for use with solar arrays
US4591965A (en) * 1984-10-19 1986-05-27 Dickerson Arthur F Inverter for use with solar arrays
US4956762A (en) * 1989-01-13 1990-09-11 S-V Technology, Inc Controlled switched bridge-based power reconfiguring apparatus
US5276603A (en) * 1990-05-03 1994-01-04 Crown International, Inc. Sixteen level power supply with asynchronous controller
US5438503A (en) * 1992-08-03 1995-08-01 Crown International, Inc. Slew rate control in a multi-level switch
US5510971A (en) * 1993-05-06 1996-04-23 Matra Transport Safety control device and process with analog power output
WO1996014686A1 (en) * 1994-11-04 1996-05-17 Gec Alsthom Limited Multilevel convertor
US5761058A (en) * 1995-07-26 1998-06-02 Matsushita Electric Works, Ltd. Power converter apparatus for a discharge lamp
USRE37126E1 (en) 1995-09-14 2001-04-03 Lockheed Martin Energy Systems, Inc. Multilevel cascade voltage source inverter with seperate DC sources
US5841645A (en) * 1996-06-03 1998-11-24 Kabushiki Kaisha Toshiba Multi-level inverter with low loss snubbing circuits
WO1998023239A1 (fr) * 1996-11-23 1998-06-04 Ichiro Fujioka Fauteuil roulant assiste par un moteur electrique et mecanisme d'actionnement de ce dernier
EP0848486A2 (de) * 1996-12-13 1998-06-17 ABB Daimler-Benz Transportation (Technology) GmbH Pulsweitenmodulationsverfahren für in Serie geschaltete 2-Punkt-Umrichter
EP0848486A3 (de) * 1996-12-13 1999-10-06 ABB Daimler-Benz Transportation (Technology) GmbH Pulsweitenmodulationsverfahren für in Serie geschaltete 2-Punkt-Umrichter
US5991179A (en) * 1997-03-10 1999-11-23 Siemens Aktiengesellschaft Power amplifier with multiple, switched output stages, and method and driver for driving the output stages using different pattern signals groups
US6111770A (en) * 1997-10-28 2000-08-29 Lockheed Martin Energy Research Corporation Auxiliary resonant DC tank converter
US6075350A (en) * 1998-04-24 2000-06-13 Lockheed Martin Energy Research Corporation Power line conditioner using cascade multilevel inverters for voltage regulation, reactive power correction, and harmonic filtering
US20060109694A1 (en) * 2004-11-24 2006-05-25 Peng Fang Z Auxiliary quasi-resonant dc tank electrical power converter
US7126833B2 (en) 2004-11-24 2006-10-24 Ut-Battelle, Llc Auxiliary quasi-resonant dc tank electrical power converter
US20070194746A1 (en) * 2005-12-26 2007-08-23 Nissan Motor Co., Ltd. Electric power conversion apparatus
US7586768B2 (en) * 2005-12-26 2009-09-08 Nissan Motor Co., Ltd. Electric power conversion apparatus for plural DC voltage sources and an AC electrical load
DE102007009217A1 (de) 2007-02-26 2008-08-28 Universität Bremen Verfahren zum programmgesteuerten Betrieb eines Frequenzumrichters
WO2008104511A2 (de) * 2007-02-26 2008-09-04 Siemens Aktiengesellschaft Verfahren zum programmgesteuerten betrieb eines frequenzumrichters
WO2008104511A3 (de) * 2007-02-26 2009-04-30 Siemens Ag Verfahren zum programmgesteuerten betrieb eines frequenzumrichters
US20090085548A1 (en) * 2007-09-27 2009-04-02 Abb Schweiz Ag Converter circuit and method for operating such a converter circuit
US7847436B2 (en) 2007-10-17 2010-12-07 Edwin Arthur Blackmond Modular power supply
US20090102288A1 (en) * 2007-10-17 2009-04-23 Edwin Arthur Blackmond Modular Power Supply
US7830681B2 (en) 2008-09-24 2010-11-09 Teco-Westinghouse Motor Company Modular multi-pulse transformer rectifier for use in asymmetric multi-level power converter
US8279640B2 (en) 2008-09-24 2012-10-02 Teco-Westinghouse Motor Company Modular multi-pulse transformer rectifier for use in symmetric multi-level power converter
US8045346B2 (en) 2008-09-24 2011-10-25 Teco-Westinghouse Motor Company Modular multi-pulse transformer rectifier for use in asymmetric multi-level power converter
US8213198B2 (en) 2008-12-31 2012-07-03 Teco-Westinghouse Motor Company Partial regeneration in a multi-level power inverter
US7940537B2 (en) 2008-12-31 2011-05-10 Teco-Westinghouse Motor Company Partial regeneration in a multi-level power inverter
US20100142234A1 (en) * 2008-12-31 2010-06-10 Mehdi Abolhassani Partial regeneration in a multi-level power inverter
US20110199033A1 (en) * 2008-12-31 2011-08-18 Mehdi Abolhassani Partial Regeneration In A Multi-Level Power Inverter
US8223515B2 (en) 2009-02-26 2012-07-17 TECO—Westinghouse Motor Company Pre-charging an inverter using an auxiliary winding
US20100213921A1 (en) * 2009-02-26 2010-08-26 Mehdi Abolhassani Pre-Charging An Inverter Using An Auxiliary Winding
CN102804572B (zh) * 2009-04-23 2015-04-01 三菱电机研发中心欧洲有限公司 用于控制升压转换器的输出电压的方法和设备
CN102428637A (zh) * 2009-04-23 2012-04-25 三菱电机研发中心欧洲有限公司 用于控制由多个桥接器件构成的升压转换器的输出电压的方法和设备
CN102428637B (zh) * 2009-04-23 2014-12-31 三菱电机研发中心欧洲有限公司 用于控制由多个桥接器件构成的升压转换器的输出电压的方法和设备
US20120256602A1 (en) * 2009-04-23 2012-10-11 Mitsubishi Electric Corporation Method and an apparatus for controlling the switches of a boost converter composed of plural bridge devices
EP2422437A2 (en) * 2009-04-23 2012-02-29 Mitsubishi Electric R&D Centre Europe B.V. Method and an apparatus for controlling the output voltage of a boost converter
CN102804572A (zh) * 2009-04-23 2012-11-28 三菱电机研发中心欧洲有限公司 用于控制升压转换器的输出电压的方法和设备
CN102428636A (zh) * 2009-04-23 2012-04-25 三菱电机研发中心欧洲有限公司 用于控制由多个桥接器件构成的升压转换器的开关的方法和设备
US8982588B2 (en) 2009-04-23 2015-03-17 Mitsubishi Electric Corporation Method and an apparatus for controlling the output voltage of a boost converter composed of plural bridge devices
EP2244368A1 (en) * 2009-04-23 2010-10-27 Mitsubishi Electric R&D Centre Europe B.V. Method and an apparatus for controlling the output voltage of a boost converter composed of plural bridge devices
WO2010122083A1 (en) * 2009-04-23 2010-10-28 Mitsubishi Electric R&D Centre Europe B.V. Method and an apparatus for controlling the output voltage of a boost converter composed of plural bridge devices
US8227939B2 (en) 2009-06-11 2012-07-24 Raytheon Company Reconfigurable multi-cell power converter
US20100314937A1 (en) * 2009-06-11 2010-12-16 Jacobson Boris S Reconfigurable multi-cell power converter
US8861234B2 (en) 2009-06-15 2014-10-14 Alstom Technology Ltd Voltage source converter having chain link converter for use in high voltage DC transmission
US8599591B2 (en) 2009-06-22 2013-12-03 Alstom Technology Ltd Converter
US8711530B2 (en) 2009-06-30 2014-04-29 Teco-Westinghouse Motor Company Pluggable power cell for an inverter
US8254076B2 (en) 2009-06-30 2012-08-28 Teco-Westinghouse Motor Company Providing modular power conversion
US8130501B2 (en) 2009-06-30 2012-03-06 Teco-Westinghouse Motor Company Pluggable power cell for an inverter
US9609777B2 (en) 2009-06-30 2017-03-28 Teco-Westinghouse Motor Company Pluggable power cell for an inverter
US8575479B2 (en) 2009-06-30 2013-11-05 TECO—Westinghouse Motor Company Providing a transformer for an inverter
US9220179B2 (en) 2009-06-30 2015-12-22 Teco-Westinghouse Motor Company Pluggable power cell for an inverter
US8976526B2 (en) 2009-06-30 2015-03-10 Teco-Westinghouse Motor Company Providing a cooling system for a medium voltage drive system
US9350269B2 (en) 2009-07-31 2016-05-24 Alstom Technology Ltd. Configurable hybrid converter circuit
WO2011073466A1 (es) 2009-12-18 2011-06-23 Ingeteam Technology, S.A. Convertidor modular basado en circuitos distribuidos multinivel de punto medio capacitivo
WO2011098117A1 (en) * 2010-02-09 2011-08-18 Areva T&D Uk Limited Converter for high voltage dc dc transmission
US8861231B2 (en) 2010-02-09 2014-10-14 Alstom Technology Ltd Converter
US9130458B2 (en) 2010-03-15 2015-09-08 Alstom Technology Ltd. Static VAR compensator with multilevel converter
US8934268B2 (en) 2010-04-08 2015-01-13 Alstom Technology Ltd Power electronic converter for use in high voltage direct current power transmission
US8867242B2 (en) 2010-04-15 2014-10-21 Alstom Technology Ltd Hybrid 2-level and multilevel HVDC converter
DE102010022043A1 (de) 2010-05-26 2011-12-01 Siemens Aktiengesellschaft Energiespeicher im Bereich der Elektroenergieübertragung und -verteilung
WO2011147927A1 (de) 2010-05-26 2011-12-01 Siemens Aktiengesellschaft Energiespeicher im bereich der elektroenergieübertragung und -verteilung
US9065299B2 (en) 2010-06-18 2015-06-23 Alstom Technology Ltd Converter for HVDC transmission and reactive power compensation
US9490693B2 (en) 2010-06-18 2016-11-08 Alstom Technology Ltd. Converter for HVDC transmission and reactive power compensation
US8867244B2 (en) 2010-07-30 2014-10-21 Alstom Technology Ltd. HVDC converter including fullbridge cells for handling a DC side short circuit
EP2681797B1 (fr) 2011-03-02 2018-11-14 Commissariat à l'Énergie Atomique et aux Énergies Alternatives Batterie avec gestion individuelle des cellules
US9350250B2 (en) 2011-06-08 2016-05-24 Alstom Technology Ltd. High voltage DC/DC converter with cascaded resonant tanks
US8601190B2 (en) 2011-06-24 2013-12-03 Teco-Westinghouse Motor Company Providing multiple communication protocols for a control system having a master controller and a slave controller
US9509218B2 (en) 2011-08-01 2016-11-29 Alstom Technology Ltd. DC to DC converter assembly
US9479061B2 (en) 2011-08-01 2016-10-25 Alstom Technology Ltd. DC to DC converter assembly
US9209693B2 (en) 2011-11-07 2015-12-08 Alstom Technology Ltd Control circuit for DC network to maintain zero net change in energy level
US9362848B2 (en) 2011-11-17 2016-06-07 Alstom Technology Ltd. Hybrid AC/DC converter for HVDC applications
EP2807007B1 (en) 2012-01-26 2018-05-02 Cifa S.P.A. Truck mixer with a device to make the drum of the concrete mixer rotate and corresponding method
US9954358B2 (en) 2012-03-01 2018-04-24 General Electric Technology Gmbh Control circuit
WO2014040780A3 (de) * 2012-09-12 2014-10-16 Robert Bosch Gmbh Batteriemanagementsystem, batteriesystem, kraftfahrzeug und verfahren zur erzeugung einer periodischen wechselspannung ("batteriedirektinverter")
CN104620491B (zh) * 2012-09-12 2018-06-05 罗伯特·博世有限公司 蓄电池管理系统、蓄电池系统、机动车和用于生成周期性交流电压的方法
US20150249351A1 (en) * 2012-09-12 2015-09-03 Robert Bosch Gmbh Battery Management System, Battery System, Motor Vehicle and Method for Generating a Periodic Alternating Voltage
US9979209B2 (en) * 2012-09-12 2018-05-22 Robert Bosch Gmbh Battery management system for generating a periodic alternating voltage based on battery state of wear
CN104620491A (zh) * 2012-09-12 2015-05-13 罗伯特·博世有限公司 蓄电池管理系统、蓄电池系统、机动车和用于生成周期性交流电压的方法
US9363930B2 (en) 2013-03-11 2016-06-07 Teco-Westinghouse Motor Company Passive two phase cooling solution for low, medium and high voltage drive systems
US9941813B2 (en) 2013-03-14 2018-04-10 Solaredge Technologies Ltd. High frequency multi-level inverter
US11742777B2 (en) 2013-03-14 2023-08-29 Solaredge Technologies Ltd. High frequency multi-level inverter
US11545912B2 (en) 2013-03-14 2023-01-03 Solaredge Technologies Ltd. High frequency multi-level inverter
US9153374B2 (en) 2013-06-28 2015-10-06 Teco-Westinghouse Motor Company Cooling arrangements for drive systems
US10886832B2 (en) 2014-03-26 2021-01-05 Solaredge Technologies Ltd. Multi-level inverter
US11296590B2 (en) 2014-03-26 2022-04-05 Solaredge Technologies Ltd. Multi-level inverter
US11632058B2 (en) 2014-03-26 2023-04-18 Solaredge Technologies Ltd. Multi-level inverter
US9318974B2 (en) 2014-03-26 2016-04-19 Solaredge Technologies Ltd. Multi-level inverter with flying capacitor topology
US10886831B2 (en) 2014-03-26 2021-01-05 Solaredge Technologies Ltd. Multi-level inverter
US10680506B2 (en) 2014-03-26 2020-06-09 Solaredge Technologies Ltd. Multi-level inverter
US11855552B2 (en) 2014-03-26 2023-12-26 Solaredge Technologies Ltd. Multi-level inverter
US10153685B2 (en) 2014-03-26 2018-12-11 Solaredge Technologies Ltd. Power ripple compensation
US10700588B2 (en) 2014-03-26 2020-06-30 Solaredge Technologies Ltd. Multi-level inverter
US10404154B2 (en) 2014-03-26 2019-09-03 Solaredge Technologies Ltd Multi-level inverter with flying capacitor topology
US10680505B2 (en) 2014-03-26 2020-06-09 Solaredge Technologies Ltd. Multi-level inverter
US9680392B2 (en) 2014-05-13 2017-06-13 Lsis Co., Ltd. Modular multi-level converter
US10232730B2 (en) 2014-08-11 2019-03-19 Robert Bosch Gmbh Control of a secondary battery with battery cells which can be connected in series with one another
US9943016B2 (en) 2014-11-04 2018-04-10 Ge Aviation Systems Llc Cooling structure
US9680385B2 (en) 2014-11-04 2017-06-13 Ge Aviation Systems Llc Power converter
US9420724B2 (en) 2014-11-04 2016-08-16 Ge Aviation Systems Llc Power converter assembly
US10075093B2 (en) * 2014-11-12 2018-09-11 Panasonic Intellectual Property Management Co., Ltd. Power conversion device for suppressing fluctuation of common mode voltage
US20170324352A1 (en) * 2014-11-12 2017-11-09 Panasonic Intellectual Property Management Co., Ltd. Power conversion device
US9906155B2 (en) 2015-10-05 2018-02-27 Resilient Power Systems, LLC Power management utilizing a high-frequency low voltage pre-charge and synchronous common coupling
US10811988B2 (en) 2015-10-05 2020-10-20 Resilient Power Systems, LLC Power management utilizing synchronous common coupling
US10608545B2 (en) 2015-10-05 2020-03-31 Resilient Power Systems, LLC Power management utilizing synchronous common coupling
US9780682B2 (en) 2015-10-05 2017-10-03 Resilient Power Systems, LLC Power management utilizing synchronous common coupling
US10727757B2 (en) 2016-08-09 2020-07-28 Raytheon Company High voltage high frequency power converter
US10270356B2 (en) 2016-08-09 2019-04-23 Raytheon Company High voltage high frequency power converter
WO2018100322A1 (fr) 2016-12-02 2018-06-07 Supergrid Institute Convertisseur dc/dc pour réseaux électriques
GB2571721B (en) * 2018-03-05 2021-01-20 Ge Aviat Systems Ltd AC power source
US10958075B2 (en) 2018-03-05 2021-03-23 Ge Aviation Systems Limited AC power source
WO2020212572A1 (de) 2019-04-17 2020-10-22 instagrid GmbH Energiesparbetrieb für ein energieversorgungssystem mit batteriespeicher
DE102021101261A1 (de) 2021-01-21 2022-07-21 Technische Universität Kaiserslautern Kaskadierter modifizierter Halbbrücken-Konverter
EP4033653A1 (de) 2021-01-21 2022-07-27 Technische Universität Kaiserslautern Kaskadierter multizellenumrichter mit 3-poligen h-brücken mit geteiltem zwischenkreiskondensator
WO2022233668A1 (de) 2021-05-06 2022-11-10 instagrid GmbH Energieversorgungssystem und verfahren zum laden eines energieversorgungssystems
DE102021111861A1 (de) 2021-05-06 2022-11-10 instagrid GmbH Energieversorgungssystem
DE102021111864A1 (de) 2021-05-06 2022-11-10 instagrid GmbH Energieversorgungssystem und Verfahren zum Laden eines Energieversorgungssystems
EP4087087A2 (de) 2021-05-06 2022-11-09 Instagrid GmbH Energieversorgungssystem
EP4135185A1 (en) 2021-08-11 2023-02-15 Technische Universität Kaiserslautern Lattice multilevel converter
WO2023016887A1 (en) 2021-08-11 2023-02-16 Technische Universität Kaiserslautern Lattice multilevel converter

Also Published As

Publication number Publication date
JPS50107422A (ja) 1975-08-23
DE2500275A1 (de) 1975-07-24
FR2258041A1 (ja) 1975-08-08
FR2258041B3 (ja) 1977-09-30

Similar Documents

Publication Publication Date Title
US3867643A (en) Electric power converter
US4238820A (en) Variable wave-form converter
US4135235A (en) Synthesizer circuit for generating three-tier waveforms
ITVA20010022A1 (it) Invertitore statico di tensione per sistema a batterie
ES366049A1 (es) Mejoras en los circuitos conversores de energia para multi-ples aplicaciones.
Xu et al. Switched-capacitor multi-level inverter with equal distribution of the capacitors discharging phases
US11563327B2 (en) Flexible and efficient switched string converter
KR900007412B1 (ko) 직류 전압을 교류 전압으로 변환시키는 인버어터
JPS5996876A (ja) インバ−タ装置
US3839666A (en) Polyphase high voltage inverter
JPH05122873A (ja) 無停電電源装置
US3510751A (en) Naturally sampled quad pulse width modulated inverter
US3638095A (en) Standby power circuit utilizing multiple pulse modulation for converting dc to ac electric power
CA1175900A (en) Inverter with individual commutation circuit
SU1677700A1 (ru) Импульсный стабилизатор посто нного напр жени
SU799079A1 (ru) Автономна система электропитани
SU1037395A1 (ru) Инвертор с N ступенчатым аппроксимирующим синусоиду выходным напр жением
Kishore et al. Single Source Three-Phase 13-Level Transformer-Based Cascaded Hybrid Multi-level Inverter
RU1778895C (ru) Преобразователь частоты
Sathik et al. A New Design of Active NPC Converter Topology with Higher Voltage Gain for AC Microgrid Applications
SU771822A1 (ru) Преобразователь частоты с непосредственной св зью и искусственой коммутацией
Al-Hitmi et al. A Switched-Capacitor Based Multilevel Inverter with Extendable Levels having Enhanced Voltage Gain for Renewable Energy Applications
SU642834A1 (ru) Автономный инвертор напр жени
SU817940A1 (ru) Автономный инвертор напр жени
SU851703A1 (ru) Инвертор напр жени