WO2017127856A1 - Ensemble circuit pour un convertisseur de fréquence - Google Patents

Ensemble circuit pour un convertisseur de fréquence Download PDF

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Publication number
WO2017127856A1
WO2017127856A1 PCT/AT2017/000003 AT2017000003W WO2017127856A1 WO 2017127856 A1 WO2017127856 A1 WO 2017127856A1 AT 2017000003 W AT2017000003 W AT 2017000003W WO 2017127856 A1 WO2017127856 A1 WO 2017127856A1
Authority
WO
WIPO (PCT)
Prior art keywords
capacitors
frequency converter
circuit arrangement
housing
heat sink
Prior art date
Application number
PCT/AT2017/000003
Other languages
German (de)
English (en)
Inventor
Heinrich Jelinek
Original Assignee
Eco-S Green Solutions Kg
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 Eco-S Green Solutions Kg filed Critical Eco-S Green Solutions Kg
Priority to EP17708151.0A priority Critical patent/EP3427377A1/fr
Publication of WO2017127856A1 publication Critical patent/WO2017127856A1/fr

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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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into 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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M5/4585—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled 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
    • H02M1/12—Arrangements for reducing harmonics from ac input or output
    • 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
    • H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
    • 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
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
    • 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
    • H02M7/53—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 using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5387—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • 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
    • H02M1/12—Arrangements for reducing harmonics from ac input or output
    • H02M1/123—Suppression of common mode voltage or current
    • 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
    • H02M1/12—Arrangements for reducing harmonics from ac input or output
    • H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters

Definitions

  • the invention relates to a circuit arrangement for a frequency converter consisting of a passive, network-side EMC filter and an active part.
  • the state of the art includes 3-phase, passive EMC filters, which, however, are only partially connected in parallel. Also known are active, paralleischaltbare EMC filters such as from US 2014/01843315 A1. In this case, it is a power supply unit of a voltage source inverter which can be connected in parallel.
  • CSI current source inverters
  • a CSI is 4-quadrant capable and not only drives an electric machine by motor, but feeds the resulting energy back into the supply network, for example, when lowering loads on cranes when the machine becomes a generator.
  • IGBTs Insulated Gate Bipolar Transistors
  • a CSI has a massive DC reactor as an energy storage, which can be made lighter and cheaper, if the nonlinearity of the Iron core exploited and the execution is provided as a saturation or Isthmus throttle.
  • VSI Voltage Source Inverter
  • the VSI has a three-phase bridge on the mains side consisting of six bipolar, low-cost and low-loss components that support the
  • Three-phase bridge circuit that modulates the largely constant voltage of the DC link capacitor to the motor windings that there is an adjustable frequency and voltage.
  • the mains currents are also not sinusoidal and must be improved for sensitive networks by means of external EMC filters.
  • the 4-Qadrantenarra is indispensable, it usually switches instead of the bipolar three-phase bridge, a circuit with the structure of a
  • the object of the invention is to provide a circuit arrangement for a
  • the circuit arrangement according to the invention is characterized in that the active part has the functionality of a current source converter (CSI) and consists of:
  • CSI current source converter
  • Triple switches which connect the capacitors to the choke, wherein the three-way switch (S1, S2, S3, S4) are formed by a series connection of diode and reverse conducting components consists.
  • a parallel switchable circuit arrangement is thus created, which is combined in a compact arrangement.
  • the compact arrangement is surrounded by a high-frequency-tight housing, which, as usual with EMC filters, is connected to PE (Protection Earth).
  • the DC reactor a is composed of two magnetically coupled coils with four terminals and
  • Sintered metal e.g. Sendust, High Flux, MPP
  • d) is designed as a saturation or Isthmusdrossel, wherein e) the windings consist of anodised aluminum foils, which at the same time form conductors and the layer insulation.
  • a throttle ensures the economic production of the frequency converter.
  • the high switching frequency for example, 100 kHz
  • the inductor by a factor of 330 smaller and lighter than the CSI with thyristors.
  • a passive and a symmetrically active part is provided, wherein the circuit arrangement
  • this charged or feeds energy into the network depending on the polarity of the voltage source, this charged or feeds energy into the network. This further increases the savings potential.
  • the cathodes of the diodes and the drains of the J-FETs are electrically connected via their cooling surfaces by their heat sinks, and / or
  • Leitblättchen such as graphite
  • Throttle connection is cyclically connected to the AC capacitors, so that the inductor current cyclically between the
  • AC capacitors commutated, and / or G. a construction of multiple multilayer printed circuit boards, or parallel plates with insulation layers between the sheets, reduces the effective commutation inductance, and / or
  • the galvanic isolation of the power supply of the gate driver of GND is carried out by means of planar transformers whose primary winding is connected to a middle frequency generator, preferably near GND, and whose secondary winding electrically supplies the gate drivers, and / or
  • the windings of the planar transformers are generated by spiral tracks on and within the multilayer printed circuit board used and there are ferrite films attached to the top and bottom of the circuit board.
  • the main advantage is that with a 4-way multilayer printed circuit board, the windings of the transformers are free.
  • a frequency converter as Strom fundamentalnikumrichter, comprising at least one housing with therein printed circuit boards, a cooling element for cooling the components, and a control in the form of control electronics for operating the frequency converter preferably as parallelschaltbares, active,
  • regenerative, 3-phase EMC and sine-motor filter solved, in which in the housing at least two preferably two times two printed circuit boards, which are designed as 4-way multilayer printed circuit board, with control electronics, in particular Bauelmente and each with a triple switch and arranged in parallel capacitors are arranged, wherein the switching elements and the diode connected in series for cooling and current conduction are each mounted on a heat sink.
  • Frequency converter with a switching frequency higher 50kHz is possible.
  • An advantage is an embodiment in which a throttle is integrated in the housing and this is preferably arranged in the cooling flow of the fan. This in turn creates a compact design and at the same time makes optimum use of the cooling flow.
  • an up-clocked switching element and a diode connected in series are electrically conductively attached to each of the heat sinks.
  • the heat sink can simultaneously be used as a conductor, so that very high currents can flow between the two components and do not have to be conducted via the printed circuit board, as a result of which the achievable commutation inductance is further reduced.
  • An advantage is an education, in which preferably the two
  • Circuit boards are mirror images of each other in the housing, so that the heat sinks always protrude into the middle of the housing. This ensures that when opening the housing, the heat sink are arranged practically safe to touch. They are indeed at dangerous voltages, so a protection against
  • Another advantage of the internal heat sinks is that they can be operated with> 100 ° C and so the physical advantages of SiC over Si can be used.
  • An embodiment is advantageous in which a plurality of capacitors are connected in parallel and / or in series, which are connected together via the 4-fold multilayer printed circuit board with the different layers. This ensures that thereby the lowest possible Kochunalt istsindikt technically and thus acceptable switching overvoltages for such a fast-switching frequency converter is achieved.
  • a further advantage is that it allows the size can be significantly reduced.
  • an embodiment is advantageous in which on the circuit board a planar transformer is formed by superimposed spiral conductor tracks, wherein on each layer such a spiral conductor track preferably with different size and / or width and spiral revolutions, are arranged, wherein an interconnection of the individual one above the other lying
  • spiral-shaped interconnects to a primary and secondary winding through corresponding vias of the start and end points of the
  • Fig. 2a shows a circuit arrangement with the energy into the network
  • Fig. 2b shows a circuit arrangement with the energy from the network
  • Fig. 3a shows a circuit arrangement for an e-car
  • Fig. 3b shows a circuit arrangement where a motor operates in generator mode and Figure 4 is a structural arrangement.
  • FIG. 5 shows a schematic structure of a housing of the frequency converter as Strom fundamentalnikumrichter, in a simplified, schematic representation
  • Fig. 7 shows an embodiment of a 1 1 kW frequency converter, which is 4 qandrantenarea, from above with lifted housing cover and throttle, in a simplified schematic representation.
  • 1 shows a circuit arrangement which can be connected in parallel and the functions:
  • Sinusoid motor filter for sinusoidal motor voltages met and united in a compact arrangement. She is surrounded by one
  • High-frequency-tight housing which, as usual with EMC filters, is connected to PE (Protection Earth 6).
  • the passive part 1 is the network side part of a conventional EMC filter:
  • the passive part 1 consists of three capacitors C x1 , C x2 , C x3 , in
  • the capacitor C y connects to the protective conductor 6, if the neutral of the three-phase network L1, L2, L3 with the protective conductor 6 is connected.
  • the passive consists of a three-phase inductor DL.
  • the active part 2 is a symmetrical arrangement with the function of a
  • CSI Power source inverter
  • a DC intermediate circuit choke D as energy storage, through which only currents with iD> 0 A flow. It is composed of two magnetically coupled coils with a defined leakage inductance, which ensures common mode rejection between input and output. It therefore has four connections.
  • Their magnetic core consists of medium frequency suitable sintered metal (powder: for example: Sendust, High Flux, MPP) and is called saturation or
  • the winding consists of anodized aluminum foils, which also form conductors and layer insulation and make good use of the winding space of the powder core.
  • control and regulation unit 3 where the measured values of the voltages of all capacitors and that of the inductor current iD are processed and achieved by suitable switch positions of S1, S2, S3 and S4, that:
  • this invention needs faster, reverse non-conductive components that are currently difficult or unavailable in the component market.
  • SiC Silicon Carbide
  • circuit arrangement can be connected in parallel and the functions:
  • a) is constructed of two magnetically coupled coils with four terminals and
  • d) is designed as a saturation or Isthmusdrossel, wherein e) the windings consist of anodised aluminum foils, which at the same time form conductors and the layer insulation.
  • Fig. 2b shows an arrangement which is a voltage source, such as a battery of an electric car, which is loaded from the network.
  • a voltage source such as a battery of an electric car
  • the voltage source is reversed.
  • Figures 3a and 3b the 1-quadrant operation is shown, with
  • Circuit arrangement is parallel switchable and the functions:
  • FIG. 3a shows an arrangement which drives a motor, for example in an electric car, from a voltage source, for example a rechargeable battery or a fuel cell.
  • a voltage source for example a rechargeable battery or a fuel cell.
  • Fig. 3b shows an arrangement where a motor, for example, in an electric car when braking or downhill, in generator mode energy back into a reversed voltage source, such as a battery.
  • FIG. 4 shows, for example, one of the four triple switches S1, S2, S3, S4 from FIG. 1, which are all of a similar construction, with real components in their
  • the AC capacitors C1, C2, C3 are connected in star here; the neutral point is connected to the reference potential GND of the control and regulation unit 3.
  • the three series circuits of Schottky diodes D1, D2, D3 and J-FETs F1, F2, F3 form the 3 backward non-conducting electronic switches of S1.
  • Three galvanically isolated heat sinks KK1, KK2, KK3 made of aluminum are provided. For each of the three switches a separate heat sink KK1, KK2, KK3 is provided.
  • the cathodes of the diodes and the drains of the J-FETs are electrically connected via their cooling surfaces through their heat sinks.
  • Heat sink KK1, KK2, KK3 and the cooling surfaces of the diodes and J-FETs improves the electrical and thermal conductivity between the heat sink KK1, KK2, KK3 and diodes and J-FETs.
  • the root of the triple-throw switch S1 here form the three sources of the J-FETs, which is connected to one of the four throttle ports.
  • the three J-FETs are driven via the gate signals G1 1, G12, G13, whereby the throttle terminal is cyclically connected to C1, C2, C3.
  • the inductor current iD commutes cyclically between C1, C2, C3.
  • the control is designed so that always at least one of the 3 J-FETs is switched on, so that the inductor current iD is never interrupted.
  • control unit 3 and the gates of the 3 J-FETs are galvanically isolated. This can be done by means of available components in the gate drivers.
  • the power supply to the gate drivers must also be galvanically isolated from GND. This can be achieved by means of planar transformers whose primary winding is connected to a mid-frequency generator, near GND, and whose secondary winding electrically supplies the gate drivers.
  • the windings of the planar transformers are spiral-shaped
  • ferrite foils on the top and bottom of the board improve the efficiency of the planar transformers and reduce noise.
  • FIGS. 1 to 4 A detailed description of the invention described in FIGS. 1 to 4 is shown in FIGS. This is to achieve that
  • Fig. 5 the housing 10 is shown, in which the circuit boards 11 in the form of a 4-way multilayer printed circuit board 1 1 a to 1 1 d for the frequency converter 12 with
  • Frequency converter 12 is shown.
  • the printed circuit boards 11 are fixed electrically insulated from the housing 10.
  • the housing 10 Preferably, the housing 10
  • the housing 10 in the embodiment shown, is divided into several areas, wherein in the first area a cooling element 15 for generating a ventilation or
  • Cooling stream 16 is arranged through the housing 10.
  • the printed circuit boards 1 1 with the components arranged thereon which will be discussed in more detail later, arranged, in the third area due to the very compact design, it is possible that the throttle 17 with the 4 terminals for connection to the circuit board 11 is arranged, which thus also with the ventilation or
  • Cooling stream 16 can be cooled. As shown schematically, the air is sucked in by the cooling element 15 and generates a ventilation or
  • the two circuit boards 1 1 are positioned so that they form a cooling channel with the air and at the same time electrically form a bridge circuit.
  • the throttle 17 is arranged externally in a separate housing.
  • the prior art namely, the size of commercial frequency inverters 12, the preferably designed thyristor controlled as Strom fundamentalnikumrichter, much larger, in particular by 330 times, so that integration in the power / control part, ie in the housing 10, does not make sense.
  • a triple switch 18 (S1 to S12) is arranged on a circuit board 1, wherein in Fig. 5, only a single switching element 19, which is mounted on a heat sink 20, of three parallel juxtaposed switching elements 19th with independent mutually insulated heatsink 20 can be seen, the sum thus the
  • Three-way switch 8 (S1 to S12) form.
  • the triple-throw switch 18 (S1 to S12), in particular each of the three switching elements 19, with a frequency higher 50kHz, in particular 100kHz, driven or are controllable.
  • the frequency of the frequency converter 12 according to the invention is much higher than in the known from the prior art frequency converter with Tyristor horrung.
  • the heat sink 20 is used as a conductor and thus energized, but the heat sink 20 is secured isolated from the circuit board 11, for which purpose an insulating 21 between the circuit board 11 and heat sink 19 is arranged.
  • the insulating element is about 2mm thick and consists of the material polyamide (nylon); This ensures that a sufficient distance from the surface of the printed circuit board 11 with respect to the heat development of the heat sink 20 is created.
  • three mutually galvanically isolated heat sink 20 (KK1, KK2, KK3) made of aluminum on a circuit board 1.
  • a separate heat sink 20 is arranged, which is also used as a conductor, ie, that Switching element 19 is electrically conductive fixed to the heat sink 20 and the heat sink 20 is designed to be energized.
  • a high clocked switching element 19 and a diode 22 connected in series are electrically conductively attached to each of the heat sinks 20, the diode 22 preferably being connected through a Schottky diode 22 and the switching element 19 through a J-FET 21 (junction field effect transistor, normally-on), with a switching frequency higher than 50kHz,
  • the cathode of the diode 22 and the drain terminal of the J-FET 19 are electrically connected via the cooling surfaces through the heat sink 20.
  • Leitblättchen 23 for example made of graphite, between the heat sink 20 and diode 22 and J-FET 19 provided to improve the electrical and thermal conductivity between the heat sink 20 and diode 22 and J-FET 19.
  • the circuit boards 11 are mirror images of each other in the housing 10 so that the heat sink 20 always protrude into the middle of the housing s10, ie, that the heat sink 20 dangerous voltages for humans and dangerous temperatures, so that the Structure topologically inside and untouchable. This ensures that when opening the housing 10, a user can not just touch the heatsink 20, since usually from the prior art, every technician knows that the heat sink 20 are normally arranged and carried out electrically isolated and electrically isolated. Another advantage lies in the
  • the components to be cooled are arranged so that a defined ventilation or cooling flow 16 optimal heat dissipation can be achieved, ie, that the two circuit boards 11 built by the side by side Heat sink 20 form a narrow cooling channel, which is also mitgekühlt through the throttle arranged above 17. It can be said that the two closely juxtaposed cooling ducts with the throttle 17 above form the power section of the current source inverter of the frequency converter 12.
  • the heat sink 20 may have a heat sink temperature> 100 ° C, so that the heat sink 20 is therefore electrically and thermally isolated for humans, that is directed inward.
  • Frequency converter 12 is achieved that by appropriate
  • the component sizes, in particular for the capacitors 24, can be kept low, since several capacitors 24 are connected in parallel and / or in series, which are connected via the 4-fold ultilayer printed circuit board 1 1 with the different layers 1 1 a to 1 1 d together are, ie, that with the help of the vias now inexpensive capacitors 24 are connected in parallel for the PCB assembly between the AC terminals.
  • a capacitor 24 (as can be seen in FIG. 5) is contacted with the first layer 1 a, its further connection being contacted at the second layer 11 b.
  • a series connected further capacitor 24 is also connected to the second layer 1 1b, wherein the further Anschiuss with the third layer 1 1 c is contacted.
  • a plurality of parallel and series-connected capacitors 24 are mounted on the circuit board 1 1, which are connected to each other via the different layers 1 1 a to 1 d of the circuit board 1.
  • circuit board 11 further components 25 for the control and regulation, which may be arranged between the heat sink 20 and the parallel and series connected capacitor 24 or these are arranged on a separate connected circuit board 11.
  • These components 25 switch the switching elements 19 with a frequency greater than 50 kHz, in particular 100 kHz.
  • the arrangement or distribution of the components on the circuit board 1 1 can be made arbitrarily, so
  • the heat sink 20 in the lower area near the cooling element 15, then the capacitors 24 and then the components 25 may be formed.
  • 25 channels for the ventilation or cooling flow 16 are formed between the individual groups, that is to say the three heat sinks 20, in parallel and serially arranged condensers, in order to achieve optimum dissipation of the resulting heat and, at the same time, good performance
  • a further detail of the structure is shown schematically simplified.
  • a 4-way multilayer printed circuit board 1 1 (11 a to 1 1 d) is a novel design of a planar transformer 26 with an operating frequency greater than 500kHz, in particular 1 MHz, possible.
  • the planar transformer 26 is formed by superposed spiral-shaped conductor tracks 27, that is to say that on each layer 11a to 11d such a spiral conductor track 27 having a different size and / or width and spiral circulations are arranged.
  • These 5 spiral tracks 27 are nested in series and form the primary and secondary windings of the planar transformer 26.
  • the Caribbeanschaiten individual superimposed spiral tracks 27 takes place through
  • spiral-shaped conductor tracks 1 1 are arranged on each circuit board 1 1 for the three J-FETs, but in Fig. 6, only a single conductor 11 has been shown in plan view.
  • a slot 28 is arranged in the circuit board 1 1, around which the spiral
  • a small ferrite core 29 is used or arranged, which together with a self-adhesive ferrite 30, as shown schematically by dashed lines represented, which are attached to the top and bottom of the circuit board 1 1 in the region of the spiral-shaped conductor tracks 27, the magnetizing current lowers and reduces interference radiation.
  • Fig. 7 shows a schematic structure of a 1 1 kW frequency converter 12 is shown with Strom fundamentalnikumrichter in CSI technology, wherein two previously described housing 10, each with two mounted therein printed circuit boards 1 1 connected together and secured to each other.
  • the overall dimensions of such a small and lightweight frequency converter is for example: depth of about 300mm, a width of about 150mm and a height of about 450mm.
  • Frequency converter 12 is operated with extremely high switching frequency of greater than 50khz, in particular 100khz, which is possible due to the novel components in SiC technology.
  • 50khz in particular 100khz
  • each of the 4 triple switch 18 of FIG. 1 therefore consists of a printed circuit board 1 with 50% of the associated capacitor capacity of the capacitors 24 and 3 heat sinks 20, in addition to the cooling and the electrical Realized series connection of J-FET and Schottky diode, for this purpose, a graphite leaflet or printed circuit board 23 is interposed for better electrical and thermal conductivity. Furthermore, it can be seen from Fig. 7 that the heat sink 20 are always aligned in the direction of the interior of the housing 10, since the heat sink a
  • the frequency converter 12 is operated as Strom fundamentalnikumrichter 12 whose switching frequency is greater than 50kHz preferably 100kHz.
  • 100kHz switching frequency gives a very small choke and makes the benefits of the power source inverter possible.
  • the losses are kept low, so that with SiC components, a switching frequency beyond 50kHz, in particular a switching frequency of 100kHz, is possible.
  • Component names can be transferred. Also, those are in the

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Inverter Devices (AREA)

Abstract

L'invention concerne un ensemble circuit pour un convertisseur de fréquence, composé d'un filtre de CEM passif côté réseau et d'une partie active. La partie active possède la fonctionnalité d'un convertisseur à circuit intermédiaire à courant imposé (CSI) et se compose de : a) trois condensateurs à tension alternative (C1, C2, C3) branchés en étoile ou trois condensateurs à tension alternative (C12, C13, C23) branchés en triangle à l'entrée, b) trois condensateurs à tension alternative (CU, CV, CW) branchés en étoile ou trois condensateurs à tension alternative (CWV, CWU, CVU) branchés en triangle à la sortie, c) une inductance de circuit intermédiaire à courant continu (D) comportant quatre bornes et d) quatre triples commutateurs (S1, S2, S3, S4) qui relient respectivement les condensateurs à l'inductance (D). Les triples commutateurs (S1, S2, S3, S4) sont formés par un circuit série constitué d'une diode et de composants à conduction inverse.
PCT/AT2017/000003 2016-01-25 2017-01-25 Ensemble circuit pour un convertisseur de fréquence WO2017127856A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17708151.0A EP3427377A1 (fr) 2016-01-25 2017-01-25 Ensemble circuit pour un convertisseur de fréquence

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA33/2016 2016-01-25
ATA33/2016A AT518371A1 (de) 2016-01-25 2016-01-25 Schaltungsanordnung für einen Frequenzumrichter

Publications (1)

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WO2017127856A1 true WO2017127856A1 (fr) 2017-08-03

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Country Status (3)

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EP (1) EP3427377A1 (fr)
AT (1) AT518371A1 (fr)
WO (1) WO2017127856A1 (fr)

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DE102020000126A1 (de) 2019-01-21 2020-07-23 Sew-Eurodrive Gmbh & Co Kg Antriebssystem, aufweisend einen ersten Umrichter und zumindest einen zweiten Umrichter
EP3934049A1 (fr) * 2020-06-29 2022-01-05 Siemens Aktiengesellschaft Dispositif filtrant
US11728777B2 (en) 2020-06-04 2023-08-15 Aethera Technologies Limited RF power source with improved galvanic isolation

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020000126A1 (de) 2019-01-21 2020-07-23 Sew-Eurodrive Gmbh & Co Kg Antriebssystem, aufweisend einen ersten Umrichter und zumindest einen zweiten Umrichter
WO2020151913A1 (fr) 2019-01-21 2020-07-30 Sew-Eurodrive Gmbh & Co. Kg Système d'entraînement comprenant un premier convertisseur et au moins un deuxième convertisseur
US11799388B2 (en) 2019-01-21 2023-10-24 Sew-Eurodrive Gmbh & Co. Kg Drive system having a first converter and at least one second converter
US11728777B2 (en) 2020-06-04 2023-08-15 Aethera Technologies Limited RF power source with improved galvanic isolation
EP3934049A1 (fr) * 2020-06-29 2022-01-05 Siemens Aktiengesellschaft Dispositif filtrant
WO2022002640A1 (fr) * 2020-06-29 2022-01-06 Siemens Aktiengesellschaft Dispositif filtrant

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AT518371A1 (de) 2017-09-15
EP3427377A1 (fr) 2019-01-16

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