WO2014103055A1 - 電力変換装置および電力変換方法 - Google Patents
電力変換装置および電力変換方法 Download PDFInfo
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- WO2014103055A1 WO2014103055A1 PCT/JP2012/084187 JP2012084187W WO2014103055A1 WO 2014103055 A1 WO2014103055 A1 WO 2014103055A1 JP 2012084187 W JP2012084187 W JP 2012084187W WO 2014103055 A1 WO2014103055 A1 WO 2014103055A1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L9/00—Electric propulsion with power supply external to the vehicle
- B60L9/16—Electric propulsion with power supply external to the vehicle using ac induction motors
- B60L9/24—Electric propulsion with power supply external to the vehicle using ac induction motors fed from ac supply lines
- B60L9/28—Electric propulsion with power supply external to the vehicle using ac induction motors fed from ac supply lines polyphase motors
-
- 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
- H02M7/02—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2210/00—Converter types
- B60L2210/30—AC to DC converters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2210/00—Converter types
- B60L2210/40—DC to AC converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Definitions
- the present invention relates to a power conversion device and a power conversion method.
- An AC electric railway vehicle (hereinafter referred to as an electric vehicle) obtains AC power from an AC overhead line via a current collector such as a pantograph and steps down the voltage with a main transformer to obtain an AC power source for the AC power converter.
- the AC power converter includes a converter unit that converts AC power into DC power, an inverter unit that converts DC power into AC power and drives a main motor, and a DC intermediate capacitor that connects the converter unit and the inverter unit.
- a PWM (Pulse Width Modulation) method is adopted, and high-efficiency power factor 1 control is performed to bring the power factor of the input power of the converter as close to 1 as possible.
- the microcomputer control unit of the converter detects the overhead line voltage from the primary circuit of the main transformer, and controls so that the phase of the converter input voltage and the overhead line voltage coincide. In order to accurately know the phase of the overhead line voltage, it is necessary to detect the frequency of the overhead line voltage.
- a PWM converter that is operating as a regenerative inverter during a power failure operates as a generator, and detects a deviation of the output frequency from the frequency range of the overhead line voltage caused by a control operation in synchronization with its own output frequency. It has been broken. It is necessary to detect the frequency of the overhead line voltage in order to switch the threshold value for detecting the deviation of the output frequency in a section where the frequency of the overhead line voltage is different.
- the frequency detector for trains disclosed in Patent Document 1 is provided with the same number of BPFs (Band-Pass Filters) as the types of overhead power supply frequencies, and the BPF center frequency is set to match each power supply frequency.
- the center frequency of the BPF having the largest output is detected as the overhead line frequency.
- the present invention has been made in view of the above circumstances, and an object thereof is to detect the frequency of the input voltage with a simpler circuit configuration and to stabilize the operation of the converter.
- the power conversion device of the present invention includes a transformer, a frequency detection unit, a filter adjustment unit, and a conversion unit.
- the transformer transforms the input AC voltage.
- the frequency detection unit detects the frequency of the AC voltage based on the interval between the time points when the AC voltage through the bandpass filter exceeds the threshold value.
- the filter adjustment unit calculates a filter characteristic using the frequency of the AC voltage detected by the frequency detection unit as the center frequency of the band filter, and adjusts the band filter based on the filter characteristic.
- the conversion unit performs control so that the power factor becomes a predetermined value or more based on the AC voltage via the bandpass filter, converts the AC voltage transformed by the transformer into a DC voltage, and outputs the DC voltage.
- FIG. 1 is a block diagram showing a configuration example of a power conversion device according to an embodiment of the present invention.
- the power conversion device 1 includes a transformer 2, a converter 3, a converter control unit 4, a BPF (Band-Pass Filter) 5, a frequency detection unit 6, a filter adjustment unit 7, and a voltage detector 8.
- the converter control unit 4 includes a processor including a CPU (Central Processing Unit) and an internal memory, and a memory including a RAM (Random Access Memory) and a flash memory.
- Converter control unit 4 executes a control program stored in the memory and controls converter 3. The converter control unit 4 and the converter 3 cooperate to operate as a conversion unit.
- FIG. 2 is a block diagram illustrating an arrangement example of the power conversion device according to the embodiment in an electric vehicle.
- AC power is supplied from the overhead wire 11 to the primary side of the transformer 2 via the current collector 12.
- the transformer 2 supplies AC power obtained by stepping down the AC power supplied to the primary side to the converter 3.
- the converter 3 converts the AC power into DC power, and outputs it to the inverter 14 through an intermediate circuit including the filter capacitor 13.
- the inverter 14 converts DC power into AC power, supplies the AC power to the electric motor 15, and drives the electric motor 15. When the electric motor 15 is driven, a propulsive force of the electric vehicle is generated.
- the voltage on the primary side of the transformer 2 (hereinafter referred to as overhead wire voltage) is detected by the voltage detector 8 and supplied to the converter control unit 4 and the frequency detection unit 6 via the BPF 5.
- the converter control unit 4 generates a gate pulse based on the overhead line voltage via the BPF 5 and controls the switching elements included in the converter 3.
- the converter control unit 4 performs control so that the power factor is as close to 1 as possible, for example, so that the power factor of the input power of the converter 3 is equal to or greater than a predetermined value.
- the frequency detection unit 6 detects the frequency of the overhead line voltage based on the interval between the times when the overhead line voltage via the BPF 5 exceeds the threshold value, and sends it to the filter adjustment unit 7. Details of the operation of the frequency detector 6 will be described later.
- the filter adjustment unit 7 sets the frequency as the center frequency of the BPF 5 and sets the filter characteristics.
- the BPF 5 is calculated and adjusted based on the filter characteristics. For example, when the frequency sent from the frequency detection unit 6 is greater than 0, the filter adjustment unit 7 calculates a filter characteristic using the frequency as the center frequency of the BPF 5, and adjusts the BPF 5 based on the filter characteristic.
- FIG. 3 is a block diagram illustrating a configuration example of the frequency detection unit according to the embodiment.
- the frequency detection unit 6 includes a comparator 61, a frequency count unit 62, a frequency threshold output unit 63, a comparator 64, and a voltage threshold output unit 65.
- the comparator 61 receives the overhead line voltage via the BPF 5 and the voltage threshold output from the voltage threshold output unit 65.
- the comparator 61 outputs a signal that is at the H level when the overhead line voltage via the BPF 5 is larger than the voltage threshold and is at the L level when the primary voltage of the transformer 2 via the BPF 5 is equal to or lower than the voltage threshold. To do.
- the frequency counting unit 62 starts counting at a predetermined period at the rise of the output of the comparator 61, and uses the inverse of the product of the count and period until the next rise of the output of the comparator 61 as the frequency of the overhead line voltage. And output to the filter adjustment unit 7.
- the frequency counting unit 62 repeats resetting the count value at the next rising edge of the output of the comparator 61 and newly starting counting at a predetermined cycle. By shortening the predetermined period, it is possible to improve the accuracy of detecting the frequency of the overhead line voltage in the frequency counting unit 62.
- the comparator 64 receives the output of the frequency count unit 62 and the frequency threshold output from the frequency threshold output unit 63.
- the comparator 64 outputs a signal that is at the H level when the output of the frequency count unit 62 is greater than the frequency threshold, and is at the L level when the output of the frequency count unit 62 is less than or equal to the frequency threshold.
- FIG. 4 is a diagram illustrating an example of the output of the BPF in the embodiment.
- the horizontal axis represents frequency (Hz), and the vertical axis represents the amplitude ratio between the overhead line voltage and the overhead line voltage via the BPF 5.
- the characteristic when the center frequency of BPF5 is 16.7 Hz, 50 Hz, and 60 Hz is shown by a graph. A case where the center frequency of the BPF 5 is 50 Hz will be described as an example.
- the amplitude ratio when the frequency of the overhead wire voltage is 50 Hz is point A
- the amplitude ratio when it is 60 Hz is point B
- the amplitude ratio when it is 16.7 Hz is represented by point C.
- the overhead line voltage is 16.7 Hz and the center frequency of the BPF 5 is 50 Hz, the amount of attenuation is large and the value of the voltage via the BPF 5 is small.
- the frequency count unit 62 cannot detect the frequency of the overhead line voltage.
- the voltage threshold output unit 65 prepares a plurality of voltage thresholds. The voltage threshold output unit 65 outputs in order from the largest threshold.
- the frequency counting unit 62 detects the frequency based on the output of the comparator 61 determined by the voltage threshold and the overhead wire voltage via the BPF 5.
- the output of the frequency count unit 62 is 0 and the output of the comparator 64 is L level.
- the output of the comparator 64 is at the L level for a predetermined time or more, the overhead line voltage is equal to or lower than the voltage threshold value, and the frequency is not detected, so the voltage threshold value output unit 65 changes the threshold value to a small value.
- FIG. 5 and 6 are diagrams illustrating examples of frequency detection performed by the frequency detection unit according to the embodiment.
- the upper part of FIG. 5 is a graph of the overhead line voltage via the BPF 5 when the center frequency of the BPF 5 is 50 Hz and the frequency of the overhead line voltage is 50 Hz.
- FIG. 4 when both the center frequency of the BPF 5 and the frequency of the overhead line voltage are 50 Hz, the attenuation amount is very small, and the overhead line voltage via the BPF 5 exceeds the voltage threshold value 1 indicated by the one-dot chain line. .
- the comparator 61 changes from the L level to the H level when the overhead line voltage via the BPF 5 exceeds the voltage threshold 1, and from the H level to the L level when the overhead voltage via the BPF 5 becomes the voltage threshold 1 or less. Outputs a signal that becomes level.
- the frequency count unit 62 starts counting at a predetermined period at the rising edge of the output of the comparator 61, and is the reciprocal of the product of the count number and the period until the rising edge of the next comparator 61 output.
- the frequency of the overhead wire voltage 50 Hz is calculated based on the above and output to the comparator 64 and the filter adjustment unit 7.
- the frequency counting unit 62 repeats resetting the count value at the next rising edge of the output of the comparator 61 and newly starting counting at a predetermined cycle. If the frequency threshold value is, for example, 10 Hz, the output of the comparator 64 becomes H level. Since the output of the comparator 64 is at the H level, the voltage threshold output unit 65 does not change the voltage threshold.
- the filter adjustment unit 7 calculates the filter characteristics using 50 Hz as the center frequency of the BPF 5, and adjusts the BPF 5 based on the filter characteristics.
- the upper part of FIG. 6 is a graph of the overhead line voltage via the BPF 5 when the center frequency of the BPF 5 is 50 Hz and the frequency of the overhead line voltage is 16.7 Hz.
- the attenuation amount is large, and the overhead line voltage via the BPF 5 is lower than the voltage threshold value 1.
- the output of the voltage threshold value output unit 65 remains at the voltage threshold value 1
- the output of the comparator 61 remains at the L level
- the frequency count unit 62 cannot detect the frequency of the overhead line voltage.
- the output of the frequency count unit 62 is zero. If the frequency threshold is 10 Hz, for example, the output of the comparator 64 remains at the L level.
- the voltage threshold value output unit 65 changes the threshold value to a small value when the output of the comparator 64 is at the L level for a predetermined time or longer. For example, when the state in which the output of the comparator 64 is at the L level continues for a certain time or longer, the voltage threshold output unit 65 outputs the voltage threshold 2 indicated by a two-dot chain line instead of the voltage threshold 1.
- the overhead line voltage via the BPF 5 exceeds the voltage threshold 2.
- the comparator 61 changes from the L level to the H level when the overhead line voltage via the BPF 5 exceeds the voltage threshold value 2, and from the H level to the L level when the overhead line voltage via the BPF 5 becomes the voltage threshold value 2 or less. Outputs a signal that becomes level.
- the frequency count unit 62 starts counting at a predetermined period at the rise of the output of the comparator 61, and is the reciprocal of the product of the count number and the period until the next rise of the output of the comparator 61.
- the frequency of the overhead wire voltage 16.7 Hz is calculated based on the above and is output to the comparator 64 and the filter adjustment unit 7.
- the frequency counting unit 62 repeats resetting the count value at the next rising edge of the output of the comparator 61 and newly starting counting at a predetermined cycle.
- the filter adjustment unit 7 calculates the filter characteristics using 16.7 Hz as the center frequency of the BPF 5, and adjusts the BPF 5 based on the filter characteristics.
- the frequency of the overhead line voltage can be accurately detected even when traveling in a section where the frequency of the overhead line voltage is different or when the frequency of the overhead line voltage fluctuates. Can do. Further, by setting the smallest threshold value among the threshold values of the voltage threshold value output unit 65 to a value close to 0, the frequency can be detected even if the overhead line voltage via the BPF 5 is a minute value.
- the influence of noise can be suppressed by increasing the voltage threshold, and the frequency of the overhead line voltage can be detected more accurately. Therefore, the frequency of the overhead line voltage can be detected in order from the largest voltage threshold as described above. The accuracy can be improved.
- FIG. 7 is a flowchart showing an example of the frequency detection operation performed by the power conversion device according to the embodiment.
- the frequency counting unit 62 starts counting at a predetermined cycle at the rise of the output of the comparator 61, and detects the frequency of the overhead line voltage based on the reciprocal of the product of the count and the cycle until the next rise of the output of the comparator 61. .
- the frequency counting unit 62 repeatedly resets the count value at the next rising edge of the output of the comparator 61 and newly starts counting at a predetermined cycle (step S110).
- Step S130 When the detected frequency of the overhead line voltage is equal to or lower than the frequency threshold value and the output of the comparator 64 is at the L level for a predetermined time or longer (step S120; Y), the voltage threshold value output unit 65 decreases the threshold value. (Step S130). When the detected frequency of the overhead line voltage exceeds the frequency threshold value and the output of the comparator 64 is at the H level (step S120; N), the process proceeds to step S140 without performing step S130. Then, when the frequency detected by the frequency counting unit 62 is greater than a predetermined value and the frequency detecting unit 6 can consider that the frequency of the overhead line voltage has been detected (step S140; Y), the filter adjusting unit 7 determines the frequency.
- a filter characteristic is calculated as the center frequency of the BPF 5, and the BPF 5 is adjusted based on the filter characteristic (step S150).
- the frequency detected by the frequency counting unit 62 is equal to or lower than the predetermined value (step S140; N)
- the process of step S150 is not performed.
- the power conversion device 1 repeats the above-described frequency detection process at predetermined intervals.
- the power conversion device 1 performs power conversion for converting input AC power into DC power at a timing independent of the above-described frequency detection processing.
- the power conversion device 1 there is only one BPF 5, and it is not necessary to provide a plurality of BPFs according to the types of frequencies that the overhead wire voltage can take.
- the BPF circuit is configured by an FPGA (Field-Programmable Gate Array)
- the configuration having only one BPF 5 can reduce the capacity of the FPGA and reduce the size of the substrate.
- the filter characteristic of the BPF 5 is adjusted according to the detected frequency, the center frequency of the BPF 5 is changed according to the fluctuation of the frequency of the overhead line voltage, and the operation of the converter 3 can be further stabilized.
- the voltage threshold output unit 65 may be configured to use one voltage threshold that is a very small value. By setting the voltage threshold value to a very small value, the overhead line voltage via the BPF 5 can exceed the voltage threshold even when the frequency of the overhead line voltage fluctuates. In addition, when there is only one voltage threshold, the frequency threshold output unit 63 and the comparator 64 are not necessary, so that the circuit configuration can be further simplified.
- the power conversion device 1 According to the embodiment of the present invention, it is possible to detect the frequency of the input voltage with a simpler circuit configuration and to stabilize the operation of the converter.
- the present invention can be suitably employed in a power conversion device that converts AC power into DC power.
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Abstract
Description
Claims (4)
- 入力された交流電圧を変圧する変圧器と、
帯域フィルタを介した前記交流電圧が閾値を超える時点間の間隔に基づき、前記交流電圧の周波数を検出する周波数検出部と、
前記周波数検出部で検出した前記交流電圧の周波数を前記帯域フィルタの中心周波数としてフィルタ特性を算出し、前記フィルタ特性に基づき前記帯域フィルタを調節するフィルタ調節部と、
前記帯域フィルタを介した前記交流電圧に基づき、力率が所定の値以上となるように制御を行い、前記変圧器で変圧された前記交流電圧を直流電圧に変換して出力する変換部と、
を備える電力変換装置。 - 前記周波数検出部は、複数の閾値の内、最も大きい閾値から順に、前記帯域フィルタを介した前記交流電圧が前記閾値を超える時点間の間隔に基づき、前記交流電圧の周波数を検出することを繰り返し、
前記フィルタ調節部は、検出された前記交流電圧の周波数が所定の値より大きい場合に、該交流電圧の周波数を前記帯域フィルタの中心周波数として前記フィルタ特性を算出する、
請求項1に記載の電力変換装置。 - 帯域フィルタを備える電力変換装置が行う電力変換方法であって、
入力された交流電圧を変圧する変圧ステップと、
前記帯域フィルタを介した前記交流電圧が閾値を超える時点間の間隔に基づき、前記交流電圧の周波数を検出する周波数検出ステップと、
前記周波数検出ステップで検出した前記交流電圧の周波数を前記帯域フィルタの中心周波数としてフィルタ特性を算出し、前記フィルタ特性に基づき前記帯域フィルタを調節するフィルタ調節ステップと、
前記帯域フィルタを介した前記交流電圧に基づき、力率が所定の値以上となるように制御を行い、前記変圧器で変圧された前記交流電圧を直流電圧に変換して出力する変換ステップと、
を備える電力変換方法。 - 前記周波数検出ステップにおいて、複数の閾値の内、最も大きい閾値から順に、前記帯域フィルタを介した前記交流電圧が前記閾値を超える時点間の間隔に基づき、前記交流電圧の周波数を検出することを繰り返し、
前記フィルタ調節ステップにおいて、検出された前記交流電圧の周波数が所定の値より大きい場合に、該交流電圧の周波数を前記帯域フィルタの中心周波数として前記フィルタ特性を算出する、
請求項3に記載の電力変換方法。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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US14/435,662 US9350230B2 (en) | 2012-12-28 | 2012-12-28 | Power conversion device and power conversion method with adjustable band-pass filter |
EP12890869.6A EP2940851B1 (en) | 2012-12-28 | 2012-12-28 | Power conversion device and power conversion method |
PCT/JP2012/084187 WO2014103055A1 (ja) | 2012-12-28 | 2012-12-28 | 電力変換装置および電力変換方法 |
AU2012397669A AU2012397669B2 (en) | 2012-12-28 | 2012-12-28 | Power conversion device and power conversion method |
JP2013516815A JP5291271B1 (ja) | 2012-12-28 | 2012-12-28 | 電力変換装置および電力変換方法 |
BR112015011414A BR112015011414A2 (pt) | 2012-12-28 | 2012-12-28 | dispositivo e método de conversão de energia |
CN201280078036.0A CN104885352B (zh) | 2012-12-28 | 2012-12-28 | 功率转换装置及功率转换方法 |
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EP (1) | EP2940851B1 (ja) |
JP (1) | JP5291271B1 (ja) |
CN (1) | CN104885352B (ja) |
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GB2543715B (en) * | 2015-01-27 | 2021-09-22 | Crrc Qingdao Sifang Co Ltd | Detection method and system for pantograph arc based on train power supply system |
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JP2020194693A (ja) * | 2019-05-28 | 2020-12-03 | シャープ株式会社 | イオン検出器およびイオン発生装置 |
KR102445587B1 (ko) * | 2020-08-04 | 2022-09-26 | 한국철도기술연구원 | 전기 철도 차량 제어 장치 및 방법 |
KR102445588B1 (ko) * | 2020-08-04 | 2022-09-23 | 한국철도기술연구원 | 전기 철도 차량과 승강장의 제어 시스템과 방법 |
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- 2012-12-28 US US14/435,662 patent/US9350230B2/en active Active
- 2012-12-28 WO PCT/JP2012/084187 patent/WO2014103055A1/ja active Application Filing
- 2012-12-28 AU AU2012397669A patent/AU2012397669B2/en not_active Ceased
- 2012-12-28 EP EP12890869.6A patent/EP2940851B1/en active Active
- 2012-12-28 JP JP2013516815A patent/JP5291271B1/ja not_active Expired - Fee Related
- 2012-12-28 CN CN201280078036.0A patent/CN104885352B/zh active Active
- 2012-12-28 BR BR112015011414A patent/BR112015011414A2/pt not_active Application Discontinuation
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GB2543715B (en) * | 2015-01-27 | 2021-09-22 | Crrc Qingdao Sifang Co Ltd | Detection method and system for pantograph arc based on train power supply system |
Also Published As
Publication number | Publication date |
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US20150263604A1 (en) | 2015-09-17 |
EP2940851A1 (en) | 2015-11-04 |
JP5291271B1 (ja) | 2013-09-18 |
EP2940851A4 (en) | 2016-04-20 |
BR112015011414A2 (pt) | 2017-07-11 |
US9350230B2 (en) | 2016-05-24 |
CN104885352B (zh) | 2017-09-26 |
JPWO2014103055A1 (ja) | 2017-01-12 |
CN104885352A (zh) | 2015-09-02 |
AU2012397669A1 (en) | 2015-06-04 |
AU2012397669B2 (en) | 2015-11-26 |
EP2940851B1 (en) | 2017-08-23 |
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