TWI555304B - Power trimmer for photovoltaic power system and method of operating a power trimmer - Google Patents
Power trimmer for photovoltaic power system and method of operating a power trimmer Download PDFInfo
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- TWI555304B TWI555304B TW101126017A TW101126017A TWI555304B TW I555304 B TWI555304 B TW I555304B TW 101126017 A TW101126017 A TW 101126017A TW 101126017 A TW101126017 A TW 101126017A TW I555304 B TWI555304 B TW I555304B
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Description
本發明是有關於一種用於太陽能供電系統的電能調節器和操作電能調節器的方法，尤指一種可根據負載的消耗功率，適當地調節耦接於太陽能供電系統的光伏逆變器的最大輸出功率的用於太陽能供電系統的電能調節器和操作電能調節器的方法。 The invention relates to a power conditioner for a solar power supply system and a method for operating the power conditioner, in particular to a maximum output of a photovoltaic inverter coupled to a solar power supply system according to the power consumption of the load. Power conditioners for solar power systems and methods of operating power conditioners.
因為太陽能板僅能在白天產生電能，所以在現有技術中，裝設太陽能板的負載(例如家用電器)並須另耦接於一市電以因應負載晚上的耗電。 Since the solar panel can only generate electric energy during the daytime, in the prior art, the load (such as a household appliance) on which the solar panel is installed must be coupled to a mains to cope with the power consumption of the night.
然而，當太陽能板在白天產生電能時，負載的耗電可能變化很大。如果耦接太陽能板的光伏逆變器的最大輸出功率無法被適當地調節，則太陽能板所產生的電能中沒有被負載消耗的部分將會透過光伏逆變器產生的交流電流逆灌至市電，導致耦接市電的電表被損壞。因此，如何設計一個應用於市電與光伏逆變器之間的電能調節器成為太陽能產業的重要課題。 However, when solar panels generate electrical energy during the day, the power consumption of the load can vary greatly. If the maximum output power of the photovoltaic inverter coupled to the solar panel cannot be properly adjusted, the portion of the electrical energy generated by the solar panel that is not consumed by the load will be reversed to the commercial power through the alternating current generated by the photovoltaic inverter. The meter that caused the coupling to the mains was damaged. Therefore, how to design a power conditioner between the mains and the photovoltaic inverter has become an important issue in the solar industry.
本發明的一實施例提供一種用於太陽能供電系統的電能調節器。該電能調節器包含一感測器、一繼電器及一控制器。該感測器 是耦接於一市電和一負載，用以偵測該負載的消耗功率，其中該市電提供給該負載一電流；該繼電器是耦接於一光伏逆變器(Photovoltaic Inverter)與該負載之間；該控制器是耦接於該感測器，用以根據該電流，控制該繼電器的開啟與關閉，以及傳送一緊急停止輸出信號和該消耗功率的信息至該光伏逆變器，其中當該電流小於一預定電流值時，該控制器同時關閉該繼電器以及該光伏逆變器以降低該電能調節器的功耗。 An embodiment of the invention provides a power conditioner for a solar power supply system. The power conditioner includes a sensor, a relay, and a controller. The sensor Is coupled to a mains and a load for detecting the power consumption of the load, wherein the utility supplies a current to the load; the relay is coupled between a photovoltaic inverter (Photovoltaic Inverter) and the load The controller is coupled to the sensor for controlling the opening and closing of the relay according to the current, and transmitting an emergency stop output signal and the power consumption information to the photovoltaic inverter, wherein When the current is less than a predetermined current value, the controller simultaneously turns off the relay and the photovoltaic inverter to reduce the power consumption of the power conditioner.
本發明的另一實施例提供一種操作電能調節器的方法，該電能調節器包含一感測器、一繼電器及一控制器。該方法包含該感測器偵測一負載的消耗功率；當一市電提供給該負載的一電流小於一預定電流值時，該控制器同時關閉該繼電器，以及傳送該緊急停止輸出信號至一光伏逆變器以降低該電能調節器的功耗。 Another embodiment of the present invention provides a method of operating a power conditioner, the power conditioner including a sensor, a relay, and a controller. The method includes the sensor detecting a power consumption of a load; when a current supplied by the utility to the load is less than a predetermined current value, the controller simultaneously turns off the relay, and transmits the emergency stop output signal to a photovoltaic The inverter reduces the power consumption of the power conditioner.
本發明的另一實施例提供一種操作電能調節器的方法，該電能調節器包含一感測器、一繼電器及一控制器。該方法包含該感測器偵測一負載的消耗功率；當一市電提供給該負載的一電流大於一預定電流值時，該控制器開啟該繼電器，以及傳送該消耗功率的信息至一光伏逆變器。 Another embodiment of the present invention provides a method of operating a power conditioner, the power conditioner including a sensor, a relay, and a controller. The method includes the sensor detecting a power consumption of a load; when a current supplied by the utility to the load is greater than a predetermined current value, the controller turns on the relay, and transmits the power consumption information to a photovoltaic inverse Transformer.
本發明的另一實施例提供一種操作電能調節器的方法，該電能調節器包含一感測器、一繼電器及一控制器。該方法包含該感測器偵測一負載的消耗功率；該控制器開啟該繼電器，以及傳送該消耗 功率的信息至一光伏逆變器。 Another embodiment of the present invention provides a method of operating a power conditioner, the power conditioner including a sensor, a relay, and a controller. The method includes the sensor detecting a power consumption of a load; the controller turns on the relay, and transmits the consumption Power information to a photovoltaic inverter.
本發明提供一種用於太陽能供電系統的電能調節器和操作電能調節器的方法。該電能調節器和該方法是利用一感測器偵測一負載的消耗功率。然後一控制器可根據該市電提供給該負載的電流，決定是否通知一光伏逆變器停止輸出一交流電流，或是該光伏逆變器可根據該負載的消耗功率的信息，調整該光伏逆變器的最大輸出功率。因此，相較於先前技術，因為本發明可根據該負載的消耗功率，適當地調節該光伏逆變器的最大輸出功率，所以本發明可防止一太陽能板所產生的電能中沒有被該負載消耗的部分透過該光伏逆變器產生的交流電流逆灌至該市電。 The present invention provides a power conditioner for a solar power system and a method of operating a power conditioner. The power conditioner and the method utilize a sensor to detect the power consumption of a load. Then a controller can determine whether to notify a photovoltaic inverter to stop outputting an alternating current according to the current supplied by the utility to the load, or the photovoltaic inverter can adjust the photovoltaic inverse according to the information of the consumed power of the load. The maximum output power of the transformer. Therefore, compared with the prior art, since the present invention can appropriately adjust the maximum output power of the photovoltaic inverter according to the power consumption of the load, the present invention can prevent the energy generated by a solar panel from being consumed by the load. The part is reversed to the mains by the alternating current generated by the photovoltaic inverter.
請參照第1圖，第1圖是為本發明的一實施例說明一種用於太陽能供電系統的電能調節器100的示意圖。電能調節器100包含一感測器102、一繼電器(relay)104及一控制器106。感測器102是耦接於一市電108和一負載110，用以偵測負載110的消耗功率LPC；繼電器104是耦接於一光伏逆變器(Photovoltaic Inverter)112與負載110之間，其中光伏逆變器112耦接於一太陽能板114，用以轉換太陽能板114產生的一直流電流IDC成為一交流電流IAC至繼電器104；控制器106是耦接於感測器102，用以根據電流IG，控制繼電器104的開啟與關閉，亦即因為功率PG是為市電108提供給負載110的電流IG與電壓VG(例如110V或200V)的乘積，所以控制器 106可根據電流IG，控制繼電器104的開啟與關閉。另外，控制器106另用以傳送一緊急停止輸出信號ESOS和負載110的消耗功率LPC的信息至光伏逆變器112。 Please refer to FIG. 1. FIG. 1 is a schematic diagram showing a power conditioner 100 for a solar power supply system according to an embodiment of the present invention. The power conditioner 100 includes a sensor 102, a relay 104, and a controller 106. The sensor 102 is coupled to a mains 108 and a load 110 for detecting the power consumption LPC of the load 110. The relay 104 is coupled between a photovoltaic inverter 112 and the load 110. The photovoltaic inverter 112 is coupled to a solar panel 114 for converting the DC current generated by the solar panel 114 into an AC current IAC to the relay 104. The controller 106 is coupled to the sensor 102 for current flow. IG, controlling the opening and closing of the relay 104, that is, because the power PG is the product of the current IG supplied to the load 110 by the mains 108 and the voltage VG (for example, 110V or 200V), so the controller 106 can control the opening and closing of the relay 104 according to the current IG. In addition, the controller 106 is further configured to transmit information of an emergency stop output signal ESOS and the power consumption LPC of the load 110 to the photovoltaic inverter 112.
如第1圖所示，電能調節器100另包含一緊急接腳116與一傳輸接腳118，其中傳輸接腳118支援一RS485的通信標準。控制器106是透過緊急接腳116傳送緊急停止輸出信號ESOS至光伏逆變器112；控制器106是透過傳輸接腳118傳送消耗功率LPC的信息至光伏逆變器112。 As shown in FIG. 1, the power conditioner 100 further includes an emergency pin 116 and a transmission pin 118, wherein the transmission pin 118 supports an RS485 communication standard. The controller 106 transmits an emergency stop output signal ESOS to the photovoltaic inverter 112 through the emergency pin 116; the controller 106 transmits information of the power consumption LPC to the photovoltaic inverter 112 through the transmission pin 118.
如第1圖所示，當電能調節器100開機且市電108提供給負載110的電流IG小於一預定電流值時，此時因為負載110是為一輕載，所以控制器106關閉繼電器104，以及透過緊急接腳116傳送緊急停止輸出信號ESOS至光伏逆變器112。如此，因為繼電器104和光伏逆變器112都關閉，所以太陽能板114所產生的電能不會透過光伏逆變器112所產生的交流電流IAC逆灌至市電108。當電流IG大於預定電流值(亦即此時負載110是為一重載)時，控制器106可透過傳輸接腳118判斷光伏逆變器112是否處於輸出模式。如果光伏逆變器112是處於輸出模式，控制器106可透過傳輸接腳118傳送負載110的消耗功率LPC的信息至光伏逆變器112。然後，光伏逆變器112即可根據負載110的消耗功率LPC的信息，調整光伏逆變器112的一最大輸出功率，其中光伏逆變器112的最大輸出功率是不大於光伏逆變器112的一最大功率限制值。亦即如果光伏逆 變器112的最大功率限制值是為5KW，則光伏逆變器112的最大輸出功率將不會大於5KW。另外，在本發明的另一實施例中，不論電流IG是否大於預定電流值，控制器106都不會關閉繼電器104。因此，光伏逆變器112總是根據負載110的消耗功率LPC的信息，調整光伏逆變器112的最大輸出功率，以使光伏逆變器112的最大輸出功率不大於光伏逆變器112的最大功率限制值。 As shown in FIG. 1, when the power conditioner 100 is turned on and the current IG supplied by the utility power 108 to the load 110 is less than a predetermined current value, the controller 106 turns off the relay 104 because the load 110 is a light load. The emergency stop output signal ESOS is transmitted through the emergency pin 116 to the photovoltaic inverter 112. As such, since both the relay 104 and the photovoltaic inverter 112 are turned off, the electrical energy generated by the solar panel 114 is not reversed to the commercial power 108 through the alternating current IAC generated by the photovoltaic inverter 112. When the current IG is greater than the predetermined current value (ie, the load 110 is a heavy load at this time), the controller 106 can determine whether the photovoltaic inverter 112 is in the output mode through the transmission pin 118. If the photovoltaic inverter 112 is in an output mode, the controller 106 can transmit information of the power consumption LPC of the load 110 to the photovoltaic inverter 112 via the transmission pin 118. Then, the photovoltaic inverter 112 can adjust a maximum output power of the photovoltaic inverter 112 according to the information of the power consumption LPC of the load 110, wherein the maximum output power of the photovoltaic inverter 112 is not greater than that of the photovoltaic inverter 112. A maximum power limit value. If the PV is reversed The maximum power limit of the transformer 112 is 5 kW, and the maximum output power of the photovoltaic inverter 112 will not be greater than 5 KW. Additionally, in another embodiment of the invention, the controller 106 does not turn off the relay 104 regardless of whether the current IG is greater than a predetermined current value. Therefore, the photovoltaic inverter 112 always adjusts the maximum output power of the photovoltaic inverter 112 according to the information of the power consumption LPC of the load 110 such that the maximum output power of the photovoltaic inverter 112 is not greater than the maximum of the photovoltaic inverter 112. Power limit value.
請參照第1圖和第2圖，第2圖係為本發明的另一實施例說明一種操作電能調節器的方法的流程圖。第2圖的方法是利用第1圖的電能調節器100說明，詳細步驟如下：步驟200：開始；步驟202：感測器102偵測負載110的消耗功率LPC；步驟204：電流IG是否小於一預定電流值；如果是，進行步驟206；如果否，進行步驟208；步驟206：控制器106關閉繼電器104，以及傳送緊急停止輸出信號ESOS至光伏逆變器112，跳回步驟202；步驟208：控制器106判斷光伏逆變器112是否處於輸出模式；如果是，進行步驟210；如果否，跳回步驟202；步驟210：控制器106開啟繼電器104，以及傳送負載110的消耗功率LPC的信息至光伏逆變器112；步驟212：光伏逆變器112根據負載110的消耗功率LPC的信息，調整光伏逆變器112的一最大輸出功率，跳回步 驟202。 Please refer to FIG. 1 and FIG. 2, which is a flow chart illustrating a method of operating a power conditioner according to another embodiment of the present invention. The method of FIG. 2 is illustrated by the power conditioner 100 of FIG. 1. The detailed steps are as follows: Step 200: Start; Step 202: The sensor 102 detects the power consumption LPC of the load 110; Step 204: Whether the current IG is less than one The predetermined current value; if yes, proceed to step 206; if not, proceed to step 208; step 206: the controller 106 turns off the relay 104, and transmits the emergency stop output signal ESOS to the photovoltaic inverter 112, and jumps back to step 202; The controller 106 determines whether the photovoltaic inverter 112 is in the output mode; if yes, proceeds to step 210; if not, jumps back to step 202; step 210: the controller 106 turns on the relay 104, and transmits the power consumption LPC information of the load 110 to Photovoltaic inverter 112; Step 212: The PV inverter 112 adjusts a maximum output power of the PV inverter 112 according to the information of the power consumption LPC of the load 110, and jumps back to the step. Step 202.
在步驟202中，如第1圖所示，當電能調節器100開機時，感測器102先偵測負載110的消耗功率LPC。在步驟206中，當市電108提供給負載110的電流IG小於預定電流值時，此時因為負載110是為一輕載，所以控制器106關閉繼電器104，以及透過緊急接腳116傳送緊急停止輸出信號ESOS至光伏逆變器112。如此，因為繼電器104和光伏逆變器112都關閉，所以太陽能板114所產生的電能不會透過光伏逆變器112所產生的交流電流IAC逆灌至市電108。在步驟208中，當電流IG大於預定電流值(亦即此時負載110是為一重載)時，控制器106可透過傳輸接腳118判斷光伏逆變器112是否處於輸出模式，其中傳輸接腳118支援RS485的通信標準。在步驟210中，如果光伏逆變器112是處於輸出模式，控制器106可透過傳輸接腳118傳送負載110的消耗功率LPC的信息至光伏逆變器112。然後，在步驟212中，光伏逆變器112即可根據負載110的消耗功率LPC的信息，調整光伏逆變器112的最大輸出功率，其中光伏逆變器112的最大輸出功率是不大於光伏逆變器112的一最大功率限制值。亦即如果光伏逆變器112的最大功率限制值是為5KW，則光伏逆變器112的最大輸出功率將不會大於5KW。 In step 202, as shown in FIG. 1, when the power conditioner 100 is turned on, the sensor 102 first detects the power consumption LPC of the load 110. In step 206, when the current IG supplied by the utility 108 to the load 110 is less than the predetermined current value, the controller 106 turns off the relay 104 and transmits the emergency stop output through the emergency pin 116 because the load 110 is a light load. Signal ESOS to photovoltaic inverter 112. As such, since both the relay 104 and the photovoltaic inverter 112 are turned off, the electrical energy generated by the solar panel 114 is not reversed to the commercial power 108 through the alternating current IAC generated by the photovoltaic inverter 112. In step 208, when the current IG is greater than the predetermined current value (that is, the load 110 is a heavy load at this time), the controller 106 can determine whether the photovoltaic inverter 112 is in the output mode through the transmission pin 118, wherein the transmission is connected. The foot 118 supports the RS485 communication standard. In step 210, if the photovoltaic inverter 112 is in the output mode, the controller 106 can transmit information of the power consumption LPC of the load 110 to the photovoltaic inverter 112 via the transmission pin 118. Then, in step 212, the photovoltaic inverter 112 can adjust the maximum output power of the photovoltaic inverter 112 according to the information of the power consumption LPC of the load 110, wherein the maximum output power of the photovoltaic inverter 112 is not greater than the photovoltaic inverse A maximum power limit value for the transformer 112. That is, if the maximum power limit value of the photovoltaic inverter 112 is 5 KW, the maximum output power of the photovoltaic inverter 112 will not be greater than 5 KW.
另外，在本發明的另一實施例中，不論電流IG是否大於預定電流值，控制器106都不會關閉繼電器104。因此，光伏逆變器112總是根據負載110的消耗功率LPC的信息，調整光伏逆變器112的 最大輸出功率，以使光伏逆變器112的最大輸出功率不大於光伏逆變器112的最大功率限制值。 Additionally, in another embodiment of the invention, the controller 106 does not turn off the relay 104 regardless of whether the current IG is greater than a predetermined current value. Therefore, the photovoltaic inverter 112 always adjusts the photovoltaic inverter 112 according to the information of the power consumption LPC of the load 110. The maximum output power is such that the maximum output power of the photovoltaic inverter 112 is no greater than the maximum power limit of the photovoltaic inverter 112.
請參照第1圖和第3圖，第3圖係為說明一種操作光伏逆變器112的流程圖。第3圖的方法是利用第1圖的電能調節器100說明，詳細步驟如下：步驟300：開始；步驟302：光伏逆變器112是否收到一緊急停止輸出信號ESOS；如果是，進行步驟304；如果否，進行步驟306；步驟304：光伏逆變器112停止輸出一交流電流IAC，跳回步驟302；步驟306：光伏逆變器112是否收到負載110的消耗功率LPC的信息；如果是，進行步驟308；如果否，進行步驟312；步驟308：光伏逆變器112根據負載110的消耗功率LPC的信息，調整光伏逆變器112的一最大輸出功率；步驟310：光伏逆變器112的最大輸出功率是否大於一最大功率限制值；如果是，進行步驟312；如果否，進行步驟314；步驟312：光伏逆變器112輸出最大功率限制值，跳回步驟302；步驟314：光伏逆變器112輸出最大輸出功率，跳回步驟302。 Please refer to FIG. 1 and FIG. 3, which is a flow chart illustrating the operation of the photovoltaic inverter 112. The method of FIG. 3 is illustrated by the power conditioner 100 of FIG. 1. The detailed steps are as follows: Step 300: Start; Step 302: Whether the PV inverter 112 receives an emergency stop output signal ESOS; if yes, proceed to step 304 If not, proceed to step 306; step 304: the photovoltaic inverter 112 stops outputting an alternating current IAC, and jumps back to step 302; step 306: whether the photovoltaic inverter 112 receives the power consumption LPC information of the load 110; Go to step 308; if no, go to step 312; Step 308: The PV inverter 112 adjusts a maximum output power of the PV inverter 112 according to the information of the power consumption LPC of the load 110; Step 310: The PV inverter 112 Whether the maximum output power is greater than a maximum power limit value; if yes, proceed to step 312; if not, proceed to step 314; step 312: the photovoltaic inverter 112 outputs a maximum power limit value, jumping back to step 302; step 314: photovoltaic inverse The transformer 112 outputs the maximum output power and jumps back to step 302.
在步驟304中，如第1圖所示，當電能調節器100開機時，感 測器102先偵測負載110的的消耗功率LPC。當市電108提供給負載110的電流IG小於一預定電流值時，此時因為負載110是為一輕載，所以控制器106關閉繼電器104，以及透過緊急接腳116傳送緊急停止輸出信號ESOS至光伏逆變器112。如此，因為繼電器104和光伏逆變器112都關閉，所以太陽能板114所產生的電能不會透過光伏逆變器112所產生的交流電流IAC逆灌至市電108。在步，驟306中，當電流IG大於預定電流值(亦即此時負載110是為一重載)時，控制器106可透過傳輸接腳118判斷光伏逆變器112是否處於輸出模式。如果光伏逆變器112是處於輸出模式，控制器106可透過傳輸接腳118傳送負載110的消耗功率LPC的信息至光伏逆變器112。然後，在步驟308中，光伏逆變器112即可根據負載110的消耗功率LPC的信息，調整光伏逆變器112的最大輸出功率。在步驟312中，當光伏逆變器112的最大輸出功率大於光伏逆變器112的最大功率限制值時，光伏逆變器112只能輸出最大功率限制值。亦即如果光伏逆變器112的最大功率限制值是為5KW，則光伏逆變器112的最大輸出功率將不會大於5KW。在步驟314中，如果光伏逆變器112的最大輸出功率不大於光伏逆變器112的最大功率限制值時，光伏逆變器112是輸出最大輸出功率。另外，當光伏逆變器112沒有收到負載110的消耗功率LPC的信息(亦即電能調節器100尚未就緒)時，光伏逆變器112是先輸出最大功率限制值以等待電能調節器100就緒。 In step 304, as shown in FIG. 1, when the power conditioner 100 is turned on, the sense The detector 102 first detects the power consumption LPC of the load 110. When the current IG supplied by the utility 108 to the load 110 is less than a predetermined current value, at this time, since the load 110 is a light load, the controller 106 turns off the relay 104, and transmits the emergency stop output signal ESOS to the photovoltaic through the emergency pin 116. Inverter 112. As such, since both the relay 104 and the photovoltaic inverter 112 are turned off, the electrical energy generated by the solar panel 114 is not reversed to the commercial power 108 through the alternating current IAC generated by the photovoltaic inverter 112. In step 306, when the current IG is greater than the predetermined current value (ie, the load 110 is a heavy load at this time), the controller 106 can determine whether the photovoltaic inverter 112 is in the output mode through the transmission pin 118. If the photovoltaic inverter 112 is in an output mode, the controller 106 can transmit information of the power consumption LPC of the load 110 to the photovoltaic inverter 112 via the transmission pin 118. Then, in step 308, the photovoltaic inverter 112 can adjust the maximum output power of the photovoltaic inverter 112 according to the information of the power consumption LPC of the load 110. In step 312, when the maximum output power of the photovoltaic inverter 112 is greater than the maximum power limit of the photovoltaic inverter 112, the photovoltaic inverter 112 can only output the maximum power limit value. That is, if the maximum power limit value of the photovoltaic inverter 112 is 5 KW, the maximum output power of the photovoltaic inverter 112 will not be greater than 5 KW. In step 314, if the maximum output power of the photovoltaic inverter 112 is not greater than the maximum power limit of the photovoltaic inverter 112, the photovoltaic inverter 112 is the output maximum output power. In addition, when the photovoltaic inverter 112 does not receive the information of the power consumption LPC of the load 110 (ie, the power conditioner 100 is not ready), the photovoltaic inverter 112 first outputs the maximum power limit value to wait for the power conditioner 100 to be ready. .
請參照第1圖和第4圖，第4圖係為本發明的另一實施例說明 一種操作電能調節器的方法的流程圖。第4圖的方法是利用第1圖的電能調節器100說明，詳細步驟如下：步驟400：開始；步驟402：感測器102偵測負載110的消耗功率LPC；步驟404：控制器106判斷光伏逆變器112是否處於輸出模式；如果是，進行步驟406；如果否，跳回步驟402；步驟406：控制器106開啟繼電器104，以及傳送負載110的消耗功率LPC的信息至光伏逆變器112；步驟408：光伏逆變器112根據負載110的消耗功率LPC的信息，調整光伏逆變器112的一最大輸出功率，跳回步驟402。 Please refer to FIG. 1 and FIG. 4, which is a description of another embodiment of the present invention. A flow chart of a method of operating a power conditioner. The method of FIG. 4 is illustrated by the power conditioner 100 of FIG. 1. The detailed steps are as follows: Step 400: Start; Step 402: The sensor 102 detects the power consumption LPC of the load 110; Step 404: The controller 106 determines the PV Whether the inverter 112 is in the output mode; if yes, proceeding to step 406; if not, jumping back to step 402; step 406: the controller 106 turns on the relay 104, and transmitting information of the power consumption LPC of the load 110 to the photovoltaic inverter 112 Step 408: The PV inverter 112 adjusts a maximum output power of the PV inverter 112 according to the information of the power consumption LPC of the load 110, and jumps back to step 402.
第4圖的實施例和第2圖的實施例的差別在於在步驟406中不論電流IG是否大於預定電流值，控制器106都不會關閉繼電器104。因此，光伏逆變器112總是根據負載110的消耗功率LPC的信息，調整光伏逆變器112的最大輸出功率，以使光伏逆變器112的最大輸出功率不大於光伏逆變器112的最大功率限制值。另外，第4圖的實施例的其餘操作原理皆和第2圖的實施例相同，在此不再贅述。 The difference between the embodiment of Fig. 4 and the embodiment of Fig. 2 is that in step 406, the controller 106 does not turn off the relay 104 regardless of whether the current IG is greater than a predetermined current value. Therefore, the photovoltaic inverter 112 always adjusts the maximum output power of the photovoltaic inverter 112 according to the information of the power consumption LPC of the load 110 such that the maximum output power of the photovoltaic inverter 112 is not greater than the maximum of the photovoltaic inverter 112. Power limit value. In addition, the remaining operating principles of the embodiment of FIG. 4 are the same as those of the embodiment of FIG. 2, and details are not described herein again.
綜上所述，本發明所提供的用於太陽能供電系統的電能調節器和操作電能調節器的方法，是利用感測器偵測負載的消耗功率。然 後控制器可根據市電提供給負載的電流，決定是否通知光伏逆變器停止輸出交流電流，或是光伏逆變器可根據負載的消耗功率的信息，調整光伏逆變器的最大輸出功率。因此，相較於先前技術，因為本發明可根據負載的消耗功率，適當地調節光伏逆變器的最大輸出功率，所以本發明可防止太陽能板所產生的電能中沒有被負載消耗的部分透過光伏逆變器產生的交流電流逆灌至市電。 In summary, the power conditioner for the solar power supply system and the method for operating the power conditioner provided by the present invention use the sensor to detect the power consumption of the load. Of course The rear controller can decide whether to notify the photovoltaic inverter to stop outputting the alternating current according to the current supplied by the utility to the load, or the photovoltaic inverter can adjust the maximum output power of the photovoltaic inverter according to the information of the power consumption of the load. Therefore, compared with the prior art, since the present invention can appropriately adjust the maximum output power of the photovoltaic inverter according to the power consumption of the load, the present invention can prevent the portion of the electric energy generated by the solar panel from being consumed by the load from transmitting through the photovoltaic. The AC current generated by the inverter is reversed to the mains.
以上所述僅為本發明之較佳實施例，凡依本發明申請專利範圍所做之均等變化與修飾，皆應屬本發明之涵蓋範圍。 The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.
100‧‧‧電能調節器 100‧‧‧Power conditioner
102‧‧‧感測器 102‧‧‧ sensor
104‧‧‧繼電器 104‧‧‧Relay
106‧‧‧控制器 106‧‧‧ Controller
108‧‧‧市電 108‧‧‧Power
110‧‧‧負載 110‧‧‧load
112‧‧‧光伏逆變器 112‧‧‧Photovoltaic inverter
114‧‧‧太陽能板 114‧‧‧ solar panels
116‧‧‧緊急接腳 116‧‧‧Emergency pin
118‧‧‧傳輸接腳 118‧‧‧Transfer pins
ESOS‧‧‧緊急停止輸出信號 ESOS‧‧‧Emergency stop output signal
IG‧‧‧電流 IG‧‧‧current
IAC‧‧‧交流電流 IAC‧‧‧AC current
IDC‧‧‧直流電流 IDC‧‧‧ DC current
LPC‧‧‧消耗功率 LPC‧‧‧Power consumption
PG‧‧‧功率 PG‧‧‧ power
VG‧‧‧電壓 VG‧‧‧ voltage
200-212、300-314、400-408‧‧‧步驟 Steps 200-212, 300-314, 400-408‧‧
第1圖是為本發明的一實施例說明一種用於太陽能供電系統的電能調節器的示意圖。 1 is a schematic diagram of a power conditioner for a solar power supply system according to an embodiment of the present invention.
第2圖係為本發明的另一實施例說明一種操作電能調節器的方法的流程圖。 2 is a flow chart illustrating a method of operating a power conditioner in accordance with another embodiment of the present invention.
第3圖係為說明一種操作光伏逆變器112的流程圖。 FIG. 3 is a flow chart illustrating operation of the photovoltaic inverter 112.
第4圖係為本發明的另一實施例說明一種操作電能調節器的方法的流程圖。 Figure 4 is a flow chart illustrating a method of operating a power conditioner in accordance with another embodiment of the present invention.
100‧‧‧電能調節器 100‧‧‧Power conditioner
102‧‧‧感測器 102‧‧‧ sensor
104‧‧‧繼電器 104‧‧‧Relay
106‧‧‧控制器 106‧‧‧ Controller
108‧‧‧市電 108‧‧‧Power
110‧‧‧負載 110‧‧‧load
112‧‧‧光伏逆變器 112‧‧‧Photovoltaic inverter
114‧‧‧太陽能板 114‧‧‧ solar panels
116‧‧‧緊急接腳 116‧‧‧Emergency pin
118‧‧‧傳輸接腳 118‧‧‧Transfer pins
ESOS‧‧‧緊急停止輸出信號 ESOS‧‧‧Emergency stop output signal
IG‧‧‧電流 IG‧‧‧current
IAC‧‧‧交流電流 IAC‧‧‧AC current
IDC‧‧‧直流電流 IDC‧‧‧ DC current
LPC‧‧‧消耗功率 LPC‧‧‧Power consumption
PG‧‧‧功率 PG‧‧‧ power
VG‧‧‧電壓 VG‧‧‧ voltage
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097818A (en) * | 2010-01-06 | 2011-06-15 | 珠海兴业新能源科技有限公司 | Photovoltaic reverse power control and protection system |
| TW201123705A (en) * | 2009-12-29 | 2011-07-01 | Delta Electronics Inc | DC-AC conversion circuit with wide input voltage level |
| CN202282729U (en) * | 2011-10-20 | 2012-06-20 | 常熟开关制造有限公司(原常熟开关厂） | Emergency stop circuit of photovoltaic inverter |
| CN202309564U (en) * | 2011-08-11 | 2012-07-04 | 哈尔滨九洲电气股份有限公司 | Photovoltaic direct current converging device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201123705A (en) * | 2009-12-29 | 2011-07-01 | Delta Electronics Inc | DC-AC conversion circuit with wide input voltage level |
| CN102097818A (en) * | 2010-01-06 | 2011-06-15 | 珠海兴业新能源科技有限公司 | Photovoltaic reverse power control and protection system |
| CN202309564U (en) * | 2011-08-11 | 2012-07-04 | 哈尔滨九洲电气股份有限公司 | Photovoltaic direct current converging device |
| CN202282729U (en) * | 2011-10-20 | 2012-06-20 | 常熟开关制造有限公司(原常熟开关厂） | Emergency stop circuit of photovoltaic inverter |
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