JP2011091931A5 - - Google Patents

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JP2011091931A5
JP2011091931A5 JP2009243224A JP2009243224A JP2011091931A5 JP 2011091931 A5 JP2011091931 A5 JP 2011091931A5 JP 2009243224 A JP2009243224 A JP 2009243224A JP 2009243224 A JP2009243224 A JP 2009243224A JP 2011091931 A5 JP2011091931 A5 JP 2011091931A5
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power
unit
display
determination
switch
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JP2009243224A
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JP5451305B2 (en
JP2011091931A (en
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また、PWM信号生成手段がPWM信号を生成できないと判定されている間であっても、第2の電路を介して、電力系統から判定手段に電力が供給される。したがって、夜間であっても、判定手段による判定は継続される。また、演算手段、送信手段、および表示手段が、第2の電路を介して、電力系統から電力を供給されるようにされている場合、夜間であっても電力が供給される。したがって、夜間であっても、演算手段による計測値の演算、送信手段による当該計測値の外部への送信、および表示手段による当該計測値の表示が継続される。 Further, even while it is determined that the PWM signal generation unit cannot generate the PWM signal, power is supplied from the power system to the determination unit via the second electric circuit. Therefore, the determination by the determination unit is continued even at night. In addition, when the calculation means, the transmission means, and the display means are supplied with power from the power system via the second electric circuit, power is supplied even at night. Therefore, even at night, the calculation of the measurement value by the calculation means , the transmission of the measurement value to the outside by the transmission means , and the display of the measurement value by the display means are continued.

また、第3の電路を介して、電力系統から受信手段および第2の判定手段に常に電力が供給されている。したがって、夜間であっても、受信手段による要求命令の受信および第2の判定手段による判定は継続される。これにより、夜間であっても受信手段が要求命令を受信した場合は第2の電路が閉じられるので、判定手段など(演算手段、送信手段、表示手段が設けられている場合はこれらも含む。)に電力が供給されて、判定手段による判定が再開される(演算手段、送信手段、表示手段が設けられている場合は、演算手段による計測値の演算、送信手段による当該計測値の外部への送信、および表示手段による当該計測値の表示も再開される)。 In addition, power is always supplied from the power system to the reception unit and the second determination unit via the third electric path. Therefore, even at night, the reception of the request command by the reception unit and the determination by the second determination unit are continued. Thereby, even if it is night, when the receiving means receives the request command, the second electric circuit is closed. Therefore, when the receiving means is provided (including calculation means, transmitting means, and display means, these are also included). ) And the determination by the determination means is resumed (when a calculation means, a transmission means, and a display means are provided, the measurement value is calculated by the calculation means , and the measurement value by the transmission means is outside the measurement value). And the display of the measured value by the display means is also resumed).

表示部93cは、計測部93aより入力される各種計測値を表示するものであり、例えば、LED表示装置である。表示部93cは、所定の操作ボタン(図示せず)が押圧される毎に、各種計測値を順に表示画面に表示する。なお、表示部93cは、LED表示装置に限定されず、例えば液晶表示装置やCRT表示装置であってもよい。また、各種計測値の表示方法も限定されず、全てまたは複数の計測値を一度に表示画面に表示するようにしてもよい。 The display unit 93c displays various measurement values input from the measurement unit 93a, and is, for example, an LED display device. The display unit 93c displays various measurement values on the display screen in order each time a predetermined operation button (not shown) is pressed. In addition, the display part 93c is not limited to an LED display device, For example, a liquid crystal display device and a CRT display device may be sufficient. Further, the display method of various measurement values is not limited, and all or a plurality of measurement values may be displayed on the display screen at a time.

時刻t=t3で直流電圧V=起動電圧V2になったときに、制御部92は稼動を開始し(同図(c)のt=t3参照)、PWM信号を生成してドライブ回路91に出力する。したがって、ドライブ回路91も稼動を開始し、PWM信号を増幅してインバータ装置2に出力する。これにより、太陽電池1より入力される直流電力がインバータ装置2によって交流電力に変換される。しかし、開閉器4が電路を開いた状態なので、太陽光発電システムAは、負荷Bおよび電力系統Cに電力を供給しない。なお、実際には、時刻t=t3で直流電圧V=起動電圧V2になってからドライブ回路91が稼動を開始するまでの間には、制御部92による判定、PWM信号の生成、およびPWM信号のドライブ回路91への伝達によるタイムラグが発生するが、同図においては、これらのタイムラグが発生しない理想的な状況を想定して表している。 When DC voltage V = startup voltage V 2 at time t = t3, the control unit 92 starts operation (see t = t3 in FIG. 3C), generates a PWM signal, and sends it to the drive circuit 91. Output. Therefore, the drive circuit 91 also starts operation, amplifies the PWM signal, and outputs it to the inverter device 2. Thereby, the DC power input from the solar cell 1 is converted into AC power by the inverter device 2. However, the solar power generation system A does not supply power to the load B and the power system C because the switch 4 is in a state where the electric circuit is opened. Actually, during the period from when the DC voltage V = starting voltage V 2 at time t = t3 to when the drive circuit 91 starts operation, determination by the control unit 92 , generation of the PWM signal, and PWM Although a time lag occurs due to the transmission of the signal to the drive circuit 91, in the figure, it is assumed that an ideal situation where these time lags do not occur is assumed.

監視部99は、直流電圧Vが直流不足電圧V1以上の場合、または、要求信号が入力されている場合に、開閉器98に閉信号を出力する。閉信号を入力された開閉器98は、電路を閉じる。これにより、電力系統Cから電源回路97に交流電力が供給される。一方、監視部99は、直流電圧Vが直流不足電圧V1未満であり、かつ、要求信号が入力されていない場合に、開閉器98に開信号を出力する。開信号を入力された開閉器98は、電路を開く。これにより、電力系統Cから電源回路97への交流電力の供給が停止される。 The monitoring unit 99 outputs a closing signal to the switch 98 when the DC voltage V is equal to or higher than the DC undervoltage V 1 or when a request signal is input. The switch 98 to which the close signal is input closes the electric circuit. Thereby, AC power is supplied from the power system C to the power supply circuit 97. On the other hand, the monitoring unit 99 outputs an open signal to the switch 98 when the DC voltage V is less than the DC undervoltage V 1 and no request signal is input. The switch 98 to which the open signal is input opens the electric circuit. Thereby, the supply of AC power from the power system C to the power supply circuit 97 is stopped.

A,A’ 太陽光発電システム
1 太陽電池
2 インバータ装置
3 変圧器
4 開閉器
5,7 電圧センサ(検出手段)
6,8 電流センサ(検出手段)
9,9’ ンバータ制御装
91 ドライブ回路(ドライブ手段)
92 制御部(PWM信号生成手段)
93a 計測部(演算手段)
93b 通信部(送信手段)
93c 表示部
93d 判定部(判定手段、開閉制御手段)
94 開閉器(開閉手段)
95,96,97,100 電源回路
98 開閉器(第2の開閉手段)
99 監視部(受信手段、第2の判定手段、第2の開閉制御手段)
B 負荷
C 電力系統
D 監視装置
A, A ′ Photovoltaic power generation system 1 Solar cell 2 Inverter device 3 Transformer 4 Switch 5, 7 Voltage sensor (detection means)
6,8 Current sensor (detection means)
9,9 'inverter control equipment 91 drive circuit (drive means)
92 Control unit (PWM signal generating means)
93a Measuring unit (calculation means)
93b Communication unit (transmission means)
93c Display unit 93d Determination unit (determination means, opening / closing control means)
94 Switch (open / close means)
95, 96, 97, 100 Power supply circuit 98 Switch (second switching means)
99 monitoring unit (reception means, second determination means, second opening / closing control means)
B Load C Power system D Monitoring device

JP2009243224A 2009-10-22 2009-10-22 Inverter control device and photovoltaic power generation system including this inverter control device Active JP5451305B2 (en)

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Application Number Priority Date Filing Date Title
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JP2011091931A JP2011091931A (en) 2011-05-06
JP2011091931A5 true JP2011091931A5 (en) 2012-09-20
JP5451305B2 JP5451305B2 (en) 2014-03-26

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6082886B2 (en) * 2013-02-22 2017-02-22 株式会社高砂製作所 Power adjustment apparatus and power adjustment method
JP2015104234A (en) * 2013-11-26 2015-06-04 株式会社ノーリツ Power Conditioner
CN103683998B (en) * 2013-12-19 2017-01-18 华为技术有限公司 Method and device for reducing nighttime power consumption of photovoltaic inverter
JP6520030B2 (en) * 2014-09-22 2019-05-29 住友電気工業株式会社 Power supply system
CN106059280B (en) * 2016-08-08 2019-04-09 阳光电源股份有限公司 A kind of auxiliary power supply of photovoltaic inverter and start-up and shut-down control method
KR101883286B1 (en) * 2018-04-04 2018-07-31 (주)유니테스트 Control device for ac smps which start automatically according to sunrise for solar inverter system and the method wherein

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JP3636352B2 (en) * 1996-10-09 2005-04-06 株式会社安川電機 Inverter for photovoltaic power generation
JPH10127071A (en) * 1996-10-21 1998-05-15 Nissin Electric Co Ltd Solar power generator
JP3480322B2 (en) * 1998-06-30 2003-12-15 松下電工株式会社 Distributed power supply
JP3945169B2 (en) * 2001-02-07 2007-07-18 オムロン株式会社 Power conditioner and solar power generation system using this power conditioner

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