CN210780529U - Power supply system - Google Patents
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- CN210780529U CN210780529U CN201921456785.8U CN201921456785U CN210780529U CN 210780529 U CN210780529 U CN 210780529U CN 201921456785 U CN201921456785 U CN 201921456785U CN 210780529 U CN210780529 U CN 210780529U
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Abstract
The utility model provides a power supply system, include: a rectifier converting an input AC power into a DC bus voltage; the inverter is connected to the output end of the rectifier and converts the direct-current bus voltage into alternating-current voltage; a filter for filtering the AC voltage output by the inverter; the phase-shifting transformer is used for performing voltage conversion on the alternating-current voltage output by the filter to obtain an output alternating-current power supply and a plurality of paths of alternating-current voltages with phase differences; and the multi-pulse rectifier is connected to the output end of the phase-shifting transformer and rectifies a plurality of paths of alternating-current voltages to obtain an output direct-current power supply. The utility model has simple design, few parts and high reliability; by adopting the modularized IGBT power unit, the PWM rectifier and the intermediate frequency inverter are universal, the maintainability and the interchangeability are good, and the use cost is reduced; based on PWM rectification, the current harmonic wave is small, and the electromagnetic interference to a power grid is reduced; electromagnetic interference to the load is reduced through transformer isolation; the ripple of the output DC power supply is reduced by phase-shifting rectification.
Description
Technical Field
The utility model relates to a power electronic technology field especially relates to a power supply system.
Background
Aircraft are instruments that fly in the atmosphere or in the extraterrestrial space (space) with complex power systems. The power supply system of the aircraft comprises a main power supply, an emergency power supply and an auxiliary power supply; the auxiliary power supply comprises two specifications, wherein one specification is an alternating current output for aircraft inspection and maintenance, and the other specification is a direct current output for aircraft starting.
Usually, the ground needs to provide the above two power specifications at the same time to meet the use requirement of the aircraft auxiliary power supply. The requirement of the power supply specification is complex, the design of the auxiliary power supply is relatively complex, and more parts are needed, so that the cost is high, the reliability is low, and the electromagnetic interference is serious.
Therefore, how to improve the performance of the auxiliary power supply has become one of the problems to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a power supply system for solving the problems of the prior art, such as complicated structure, low reliability, serious electromagnetic interference, large ripple of the output dc power supply, etc. of the auxiliary power supply circuit of the aircraft.
To achieve the above and other related objects, the present invention provides a power supply system, which includes at least:
a rectifier converting an input AC power into a DC bus voltage;
the inverter is connected to the output end of the rectifier and converts the direct-current bus voltage output by the rectifier into alternating-current voltage;
the filter is connected to the output end of the inverter and used for filtering the alternating-current voltage output by the inverter;
the phase-shifting transformer is connected to the output end of the filter and is used for performing voltage conversion on the alternating-current voltage output by the filter to obtain an output alternating-current power supply and a plurality of paths of alternating-current voltages with phase differences;
and the multi-pulse rectifier is connected to the output end of the phase-shifting transformer and is used for rectifying the multiple paths of alternating-current voltage to obtain an output direct-current power supply.
Optionally, the hardware circuit and corresponding device parameters of the rectifier and the inverter are the same.
More optionally, the hardware circuit of the rectifier and the inverter comprises a two-level converter or a multi-level converter.
Optionally, an input filter is further connected in series between the rectifier and the input ac power source, and the input filter filters the input ac power source and transmits the filtered input ac power source to the input end of the rectifier.
Optionally, an output filter is further connected in series between the inverter and the item shifting transformer, and the output filter filters the ac voltage output by the inverter and then transmits the ac voltage to the input end of the item shifting transformer.
Optionally, the dephasing transformer comprises an isolated dephasing transformer or a coupled dephasing transformer.
Optionally, the multi-pulse rectifier includes a plurality of parallel rectification units and an output capacitor connected in parallel to an output end of the multi-pulse rectifier.
Optionally, the multi-pulse rectifier includes a plurality of rectifying units connected in series and an output capacitor connected in parallel to an output end of the multi-pulse rectifier.
As described above, the power supply system of the present invention has the following advantageous effects:
1. the utility model discloses a power supply system exports alternating current power supply and exports transformer of direct current power supply sharing, and the system design is succinct, and spare part is few, and the reliability is high.
2. The utility model discloses a power supply system adopts modular IGBT power unit, and PWM rectifier and intermediate frequency inverter are general, and maintainability and interchangeability are good, reduce use cost.
3. The utility model discloses a power supply system is based on the PWM rectification, and the electric current harmonic is little, reduces the electromagnetic interference to the electric wire netting.
4. The utility model discloses a power supply system passes through the transformer and keeps apart the electromagnetic interference who reduces the load.
5. The utility model discloses a power supply system reduces output DC power supply's ripple through shifting the phase rectification.
Drawings
Fig. 1 is a schematic structural diagram of the power supply system of the present invention.
Fig. 2 shows an implementation manner of the power supply system of the present invention.
Fig. 3 is a waveform diagram of the dc output power of the 12-pulse phase-shift rectified power supply system according to the present invention.
Fig. 4 shows a waveform diagram of the 12-pulse phase-shift rectified power supply system of the present invention when 0.1mF is selected as the output capacitor.
Fig. 5 is a waveform diagram of the 12-pulse phase-shift rectified power supply system of the present invention when 1.5mF is selected as the output capacitor.
Fig. 6 shows a waveform diagram of the 12-pulse phase-shift rectified power supply system of the present invention when the output capacitor is selected to be 30 mF.
Fig. 7 shows another implementation of the power supply system of the present invention.
Fig. 8 is a waveform diagram of the dc output power of the 18-pulse phase-shift rectified power supply system according to the present invention.
Fig. 9 is a waveform diagram of the 18-pulse phase-shift rectified power supply system of the present invention when 0.1mF is selected as the output capacitor.
Fig. 10 is a waveform diagram of the 18-pulse phase-shift rectified power supply system according to the present invention when 1.5mF is selected as the output capacitor.
Fig. 11 shows a waveform diagram of the 18-pulse phase-shift rectified power supply system of the present invention when the output capacitor is selected to be 30 mF.
Fig. 12 shows another implementation of the power supply system of the present invention.
Description of the element reference numerals
1 power supply system
11 input filter
12 rectifier
13 inverter
14 filter
15 phase shifting transformer
16 output filter
17 multi-pulse rectifier
171 rectifying unit
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
Please refer to fig. 1 to 12. It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the invention in a schematic manner, and only the components related to the invention are shown in the drawings rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, quantity and proportion of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.
Example one
As shown in fig. 1, the present embodiment provides a power supply system 1, the power supply system 1 including:
As shown in fig. 1, the rectifier 12 converts an input AC power source AC-in into a dc bus voltage.
Specifically, as the utility model discloses an implementation, input filter 11 is still connected to the input of rectifier 12, input filter 11 will input alternating current power supply AC-in transmits to after filtering the input of rectifier 12. As shown in fig. 2, in the present embodiment, the input filter 11 includes a first inductor L1, a second inductor L2, a third inductor L3, a first capacitor C1, a second capacitor C2, and a third capacitor C3; one end of each of the first inductor L1, the second inductor L2, and the third inductor L3 is connected to a three-phase signal (A, B, C) of the input AC power source AC-in, and the other end of each of the first inductor L1, the second inductor L2, and the third inductor L3 outputs a filtered three-phase signal; one end of each of the first capacitor C1, the second capacitor C2 and the third capacitor C3 is connected to a three-phase signal of the input AC power source AC-in, and the other end is grounded.
In this embodiment, the input AC power source AC-in is a three-phase AC power, and in practical applications, the number of phases of the input AC power source AC-in can be set as required. Can realize filtering function's circuit structure wantonly all be applicable to input filter 11, be not limited to the structure that this embodiment lists, equally, when the phase number of input alternating current power supply AC-in changes, the adjustment of adaptability is also done to input filter 11's structure, does not give unnecessary details here.
Specifically, in the present embodiment, the hardware circuit of the rectifier 12 is a three-phase bridge-structured converter. As shown in fig. 2, the rectifier 12 includes six power switching tubes and a capacitor, wherein a first power switching tube Q1 and a second power switching tube Q2 are connected in series, a third power switching tube Q3 and a fourth power switching tube Q4 are connected in series, a fifth power switching tube Q5 and a sixth power switching tube Q6 are connected in series, a connection node of two power switching tubes in a series structure of each power switching tube is connected to the three-phase signal of the input AC power supply AC-in, a series structure of each power switching tube is connected in parallel to output a dc bus voltage (e.g., 750VDC), and a control terminal of each power switching tube is connected to a control signal (not shown); the fourth capacitor C4 is an energy storage capacitor and is connected to the output terminal of the rectifier 12. In this embodiment, the first to sixth power switching transistors Q1 to Q6 are insulated gate bipolar transistors, and the types of the power switching transistors may be set as needed in actual use.
It should be noted that the rectifier 12 may be any two-level converter or multi-level converter (three-level converter or more) capable of converting ac to dc and converting dc to ac (including, but not limited to, bridge converter, pwm converter, midpoint clamped converter or flying capacitor converter), which is not listed herein.
As shown in fig. 1, the inverter 13 is connected to an output terminal of the rectifier 12, and converts a dc bus voltage output from the rectifier 12 into an ac voltage.
Specifically, in the present embodiment, the hardware circuits and corresponding device parameters of the inverter 13 and the rectifier 12 are the same. As shown in fig. 2, the inverter 13 includes six power switching tubes and a capacitor, the connection relationship of the devices is the same as that of the rectifier 12, and the corresponding parameters are also completely the same, and a fourth capacitor C4 is connected to the input end of the inverter 13; the series structure of each power switch tube is connected in parallel and receives the direct current bus voltage, and the connecting nodes of two power switch tubes in the series structure of each power switch tube respectively output three-phase signals of the alternating current output power supply AC _ out.
In the present embodiment, the inverter 13 and the rectifier 12 are designed to have the same IGBT power cell structure for convenience of maintenance and cost reduction. In practical use, the structure of the inverter 13 may be different from that of the rectifier 12, and is not limited to this embodiment.
As shown in fig. 1, the filter 14 is connected to an output terminal of the inverter 13, and filters an ac voltage output from the inverter 13.
Specifically, in this embodiment, the filter 14 is a low-pass filter (e.g., 400Hz) and has a hardware circuit structure completely the same as that of the input filter 11, and the input and output ends of the filter 14 and the input and output ends of the input filter 11 are interchanged, which is not repeated herein. The alternating voltage output by the inverter 13 is a square wave signal, and the alternating voltage output by filtering a high frequency part in the square wave signal through the filter 14 is a sine wave signal.
As shown in fig. 1, the variable transformer 15 is connected to the output end of the filter 14, and performs voltage conversion on the AC voltage output by the filter 14 to obtain an output AC power AC-out and a plurality of paths of AC voltages with phase differences.
Specifically, in the present embodiment, the phase-shift transformer 15 is a medium-frequency phase-shift transformer (e.g., 400Hz), and the AC power source AC-out is 115VAC, 400Hz, which is used for aircraft inspection and maintenance. It should be noted that the frequency of the variable transformer 15 and the voltage and frequency of the AC power AC-out can be adaptively adjusted according to the design requirement.
Specifically, as the utility model discloses an implementation, the output of item shifting transformer 15 still connects output filter 16, output filter 16 will output alternating current power supply AC-out outputs after filtering (output filter 16 outputs respectively output alternating current power supply AC-out's three-phase signal, marks as UA, UB, UC). As shown in fig. 2, in the present embodiment, the hardware circuit structures of the output filter 16 and the filter 14 are completely the same, and are not described herein again.
It should be noted that any circuit structure capable of realizing the filtering function is suitable for the filter 14 and the output filter 16 of the present invention, and is not limited to the structure illustrated in this embodiment, and the structure of the filter 14 and the output filter 16 can be adaptively adjusted according to the design requirement and the number of phases of the input signal. The structures of the input filter 11, the filter 14 and the output filter 16 may be designed to be the same or different, and are not described in detail herein.
Specifically, in this embodiment, the item shifting transformer 15 is an isolation transformer, and the item shifting transformer 15 includes a set of primary windings and three sets of secondary windings; one set of secondary windings is used for performing voltage conversion on the alternating-current voltage output by the inverter 13 to obtain an output alternating-current power supply AC-out, and the other two sets of secondary windings are used for performing voltage and phase conversion on the alternating-current voltage output by the inverter 13 to obtain two sets of alternating-current voltages with the same phase and sequentially different set angles. In this embodiment, the primary coil is connected in a star manner, the secondary coil for obtaining the output AC power supply AC-out is connected in a star manner, and two sets of secondary coils for obtaining the output DC power supply DC-out are connected in a delta manner and a star manner, respectively. The alternating current and direct current power supply outputs share one item shifting transformer 15, the system design is simple, the number of parts is small, the reliability is high, and the item shifting transformer 15 is used for reducing the interference to the load.
It should be noted that, the item shifting transformer 15 includes but is not limited to an isolation transformer or a coupling transformer, and any item shifting transformer structure capable of implementing the above functions is applicable to the present invention. The number of secondary windings in the phase-shifting transformer 15 can be set according to the requirement, and is not limited to this embodiment.
As shown in fig. 1, the multi-pulse rectifier 17 is connected to the output end of the phase-shifting transformer 15, and rectifies the multiple paths of ac voltages to obtain an output DC power DC-out.
Specifically, the multi-pulse rectifier 17 includes a plurality of rectifying units 171, the number of the rectifying units 171 is the same as the number of sets of secondary windings having phase differences (except for the AC power source AC-out) in the variable term transformer 15, the input end of each rectifying unit 171 is connected to the secondary windings of one set of the variable term transformer 15, and the output ends of the respective rectifying units 171 are connected in series or in parallel to obtain different voltage and current specifications. In the present embodiment, the multi-pulse rectifier 17 includes two parallel rectification units 171 and an output capacitor Cout connected in parallel to the output end of the multi-pulse rectifier 17. The rectifying unit 171 includes six diodes, each diode is connected in parallel after being connected in series two by two, the middle node of each diode in series is connected to the secondary side output coil of the phase-shifting transformer 15, and the two ends of the diode series structure are used as the positive phase output end V + and the negative phase output end V-of the multi-pulse rectifier 17. The output capacitor Cout is connected across the positive phase output end V + and the negative phase output end V-of the multi-pulse rectifier 17. The circuit structure that can realize the rectification function wantonly all is applicable to the utility model discloses a rectification unit 171 is not limited to the structure enumerated in this embodiment.
It should be noted that, in the present embodiment, the two rectifying units 171 implement 12-pulse rectification in combination with the two sets of secondary windings with phase difference of the phase-shifting transformer 15, and a low-voltage and high-current dc power supply (for example, 28VDC, used for starting an aircraft) is obtained by connecting the output terminals of the two rectifying units 171 in parallel. In practical use, the multi-pulse rectifier 17 can set the number and structure of the rectifying units 171 and the connection relationship of the rectifying units 171 according to requirements, which are not described herein again.
The power supply system 1 of this embodiment inputs a three-phase ac power supply of 50Hz and 380V, the rectifier 12 outputs a dc bus voltage of 750V, the output filter 16 outputs a three-phase ac power supply of 400Hz and 115V, the phase-shifting transformer 15 outputs a three-phase ac power supply of 400Hz and 28V (phase-shifting angles of 0 ° and 30 °), the multi-pulse rectifier 17 outputs a dc power supply of 12 pulses and 28V, and the phase-shifting transformer 15 is an intermediate frequency phase-shifting transformer. Fig. 3 is a schematic diagram illustrating a relationship between a value of the output capacitor Cout, a voltage ripple of the output DC power supply DC-out, and an effective value of a current flowing through the output capacitor Cout; fig. 4 to fig. 6 show waveforms of the output capacitor Cout sequentially taking values of 0.1mF, 1.5mF, and 30mF under 12-pulse rectification; as can be seen from the figure, as the value of the output capacitor Cout is continuously increased, the voltage ripple of the output DC power supply DC-out is gradually decreased, and when the value of the output capacitor Cout is 50mF, the output DC power supply DC-out is substantially stable and has a small voltage ripple, and the multi-pulse rectifier 17 reduces the ripple of the output voltage through multi-pulse-shift-term rectification, thereby improving the power quality.
Example two
As shown in fig. 7, the present embodiment provides a power supply system, which is different from the first embodiment in that the power supply system adopts 18-pulse rectification.
Specifically, as shown in fig. 7, the phase-shifting transformer includes a set of primary windings and four sets of secondary windings; one set of secondary side coils is used for performing voltage conversion on the alternating-current voltage output by the inverter 13 to obtain an output alternating-current power supply AC-out, and the other three sets of secondary side coils are used for performing voltage and phase conversion on the alternating-current voltage output by the inverter 13 to obtain three sets of alternating-current voltages with the same phase and sequentially different set angles.
Specifically, as shown in fig. 7, the multi-pulse rectifier includes three parallel rectification units 171 and an output capacitor Cout connected in parallel to the output end of the multi-pulse rectifier 17. The three rectifying units 171 are combined with three sets of secondary windings with phase difference in the phase-shifting transformer 15 to realize 18-pulse rectification, and output ends of the three rectifying units 171 are connected in parallel to obtain a low-voltage high-current direct-current power supply.
The power supply system of this embodiment inputs a 50Hz, 380V three-phase ac power supply, the rectifier 12 outputs a 750V dc bus voltage, the output filter 16 outputs a 400Hz, 115V three-phase ac power supply, the phase-shifting transformer 15 outputs a 400Hz, 28V three-phase ac power supply (phase-shifting angles 0 °, +15 °, and-15 °), the multi-pulse rectifier 17 outputs an 18-pulse 28V dc power supply, and the phase-shifting transformer 15 is an intermediate frequency phase-shifting transformer. Fig. 8 is a schematic diagram illustrating a relationship between a value of the output capacitor Cout, a voltage ripple of the output DC power supply DC-out, and an effective value of a current flowing through the output capacitor Cout; fig. 9 to 11 show waveforms of the output capacitor Cout sequentially taking values of 0.1mF, 1.5mF, and 30mF under 18-pulse rectification; as can be seen from the figure, as the value of the output capacitor Cout is continuously increased, the voltage ripple of the output DC power supply DC-out is gradually decreased, and when the value of the output capacitor Cout is 30mF, the output DC power supply DC-out is substantially stable and has a small voltage ripple.
Compared with the 12-pulse rectification of the first embodiment, the 18-pulse rectification of the present embodiment can obtain a stable output voltage ripple under the condition that the value of the output capacitor Cout of the output dc power supply is smaller, so that an output capacitor with a smaller capacitance value can be selected, and the volume of the capacitor and the circuit board can be correspondingly reduced.
The multi-pulse rectifier 17 may include a multi-pulse rectifier circuit such as 12 pulses, 18 pulses, or 24 pulses, which is not illustrated here.
EXAMPLE III
As shown in fig. 12, the present embodiment provides a power supply system, which is different from the first embodiment in that the power supply system is used to obtain an output dc power supply with high voltage and small current.
Specifically, as shown in fig. 12, in the present embodiment, the multi-pulse rectifier 17 includes two rectifying units 171 connected in series and an output capacitor Cout connected in parallel to the output end of the multi-pulse rectifier 17. The two rectifying units 171 implement 12-pulse rectification in combination with the two sets of secondary windings having a phase difference in the phase-shifting transformer 15, and a high-voltage low-current dc power supply (e.g., 270VDC) is obtained by connecting the output terminals of the two rectifying units 171 in series.
The power supply system of this embodiment inputs a 50Hz, 380V three-phase ac power supply, the rectifier 12 outputs a 750V dc bus voltage, the output filter 16 outputs a 400Hz, 115V three-phase ac power supply, the phase-shifting transformer 15 outputs a 400Hz, 270V three-phase ac power supply, the multi-pulse rectifier 17 outputs a 12-pulse 270V dc power supply, and the phase-shifting transformer 15 is an intermediate frequency phase-shifting transformer.
It should be noted that the multi-pulse rectifier 17 can be configured based on the required magnitude and output stability of the output DC power DC-out, which is not described herein again.
To sum up, the utility model provides a power supply system, which comprises a rectifier, a rectifier and a control circuit, wherein the rectifier converts an input alternating current power supply into a direct current bus voltage; the inverter is connected to the output end of the rectifier and converts the direct-current bus voltage output by the rectifier into alternating-current voltage; the filter is connected to the output end of the inverter and used for filtering the alternating-current voltage output by the inverter; the phase-shifting transformer is connected to the output end of the filter and is used for performing voltage conversion on the alternating-current voltage output by the filter to obtain an output alternating-current power supply and a plurality of paths of alternating-current voltages with phase differences; and the multi-pulse rectifier is connected to the output end of the phase-shifting transformer and is used for rectifying the multiple paths of alternating-current voltage to obtain an output direct-current power supply. The utility model has the advantages that the power system outputs AC power and DC power to share one phase shifting transformer, the system design is simple, the parts are few, and the reliability is high; by adopting the modularized IGBT power unit, the PWM rectifier and the intermediate frequency inverter are universal, the maintainability and the interchangeability are good, and the use cost is reduced; based on PWM rectification, the current harmonic wave is small, and the electromagnetic interference to a power grid is reduced; electromagnetic interference to the load is reduced through transformer isolation; the ripple of the output DC power supply is reduced by phase-shifting rectification. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. A power supply system, characterized in that the power supply system comprises at least:
a rectifier converting an input AC power into a DC bus voltage;
the inverter is connected to the output end of the rectifier and converts the direct-current bus voltage output by the rectifier into alternating-current voltage;
the filter is connected to the output end of the inverter and used for filtering the alternating-current voltage output by the inverter;
the phase-shifting transformer is connected to the output end of the filter and is used for performing voltage conversion on the alternating-current voltage output by the filter to obtain an output alternating-current power supply and a plurality of paths of alternating-current voltages with phase differences;
and the multi-pulse rectifier is connected to the output end of the phase-shifting transformer and is used for rectifying the multiple paths of alternating-current voltage to obtain an output direct-current power supply.
2. The power supply system according to claim 1, wherein: and the parameters of hardware circuits and corresponding devices of the rectifier and the inverter are the same.
3. The power supply system according to claim 1 or 2, characterized in that: the hardware circuit of the rectifier and the inverter comprises a two-level converter or a multi-level converter.
4. The power supply system according to claim 1, wherein: an input filter is further connected between the rectifier and the input alternating current power supply in series, and the input filter filters the input alternating current power supply and transmits the filtered input alternating current power supply to the input end of the rectifier.
5. The power supply system according to claim 1, wherein: the output end of the phase-shifting transformer is also connected with an output filter, and the output filter filters the output alternating current power supply and then outputs the filtered output alternating current power supply.
6. The power supply system according to claim 1, wherein: the phase-shifting transformer comprises an isolation type phase-shifting transformer or a coupling type phase-shifting transformer.
7. The power supply system according to claim 1, wherein: the multi-pulse rectifier comprises a plurality of parallel rectification units and an output capacitor connected in parallel with the output end of the multi-pulse rectifier.
8. The power supply system according to claim 1, wherein: the multi-pulse rectifier comprises a plurality of rectifying units connected in series and an output capacitor connected in parallel to the output end of the multi-pulse rectifier.
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|---|---|---|---|
| CN201921456785.8U CN210780529U (en) | 2019-09-03 | 2019-09-03 | Power supply system |
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| CN201921456785.8U CN210780529U (en) | 2019-09-03 | 2019-09-03 | Power supply system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067865A (en) * | 2020-09-14 | 2020-12-11 | 南方电网科学研究院有限责任公司 | Current source device and direct current fill electric pile check gauge calibrating installation |
| CN113783436A (en) * | 2021-09-27 | 2021-12-10 | 广东电网有限责任公司阳江供电局 | Full-power wind power converter and control method |
-
2019
- 2019-09-03 CN CN201921456785.8U patent/CN210780529U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067865A (en) * | 2020-09-14 | 2020-12-11 | 南方电网科学研究院有限责任公司 | Current source device and direct current fill electric pile check gauge calibrating installation |
| CN113783436A (en) * | 2021-09-27 | 2021-12-10 | 广东电网有限责任公司阳江供电局 | Full-power wind power converter and control method |
| CN113783436B (en) * | 2021-09-27 | 2023-10-20 | 广东电网有限责任公司阳江供电局 | Full-power wind power converter and control method |
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