200903960 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種疊接式電力轉換器，特別是關於 利用一第一、一第二及一第三半橋單元依序疊接，並藉由 升/降壓的操作，以便提供一穩定且可調整的直流輸出電 壓予一負載及一儲能裝置之疊接式電力轉換器。 【先前技術】 \j2)習用太&施發電之電力轉換裝置，如第1圖所示， 其包含一太陽能電池90、一直流/直流轉換器9丨、一儲能 電容92、一直流/交流逆變器93、一數位處理器94、一脈 波調變驅動器95、一配電系統％、一隔離變壓器97及一 橋式整流器98。該太陽能電池9〇用以將太陽能轉換成一 直流電壓，該直流/直流轉換器91接收該直流電壓，並輸 出一預設的直流電壓，該預設的直流電壓與該配電系統％ 壓等級相互匹配，並將該預設的直流電壓饋入該儲能 龟谷92以進行電能的儲存，該直流/交流逆變器接收 遠預設的直流電壓’以便轉換輸出一交流電壓，進而供應 至該配電系統96。 〆數位處理态94回授該太陽能電池9〇之直流電壓200903960 IX. INSTRUCTIONS: [Technical Field] The present invention relates to a spliced power converter, and more particularly to sequentially splicing and lending a first, a second, and a third half-bridge unit Operation by boost/buck operation to provide a stable and adjustable DC output voltage to a load and a stacked power converter of an energy storage device. [Prior Art] \j2) A conventional power conversion device for power generation, as shown in Fig. 1, which includes a solar cell 90, a DC/DC converter 9A, a storage capacitor 92, and a current/ The AC inverter 93, a digital processor 94, a pulse modulation driver 95, a power distribution system %, an isolation transformer 97, and a bridge rectifier 98. The solar cell 9 is configured to convert solar energy into a DC voltage, and the DC/DC converter 91 receives the DC voltage and outputs a preset DC voltage, and the preset DC voltage matches the % voltage level of the power distribution system. And feeding the preset DC voltage to the energy storage turtle valley 92 for storing electric energy, the DC/AC inverter receiving a remote preset DC voltage 'to convert and output an AC voltage, and then supplying the power to the power distribution System 96. The digital processing state 94 returns the DC voltage of the solar cell 9〇
96的電壓、電流，以產生 ‘調變驅動器95，進而藉由該脈寬調 驅動訊號控制該直流/直流轉換器91 3進行切換，進而達成將該太陽能電 電能並傳送至配電系統96， PK10383 07707/05 200903960 以供負載使用之目的。 再者，由於該太陽能電池90在盔 能，因此當該太陽能電池9〇二=:不穩定的直流電 如夜晚時〕…市電Vs_可當的電量時〔例 轉換mm ha错由晶_題器97降壓 轉換出u電壓，亚透過讀橋式整流 壓整成一外加直流電壓〔該外 將該乂"比電 預設的直流電壓值〕，以便;=流錢值係相當於上述 容犯充電，並可藉由該直後壓對該儲能電 予該配電系統96。 ；,L逆义°° 93之操作提供 -ΓΛ imml 然而，一般而言，上迷羽 當該配電系統96有多餘的^ ±，、有下列缺點，例如： 逆變器93之飛輪二極體 日雖可藉由該直流/交流 至該儲能電容92，但該 將該多餘的電力回存 徑，而不具有調節電壓:―極體僅作為電流通過之路 固定直流電壓的方式饋入該二因二，：多餘的咖 能電容％充較率μ輯ς ’箱導致該儲 命等缺點。再者，該電力_降低_此電容92使用壽 97將該市電Vs電壓降壓~換=仍需利用該隔離變壓器 势而# ^以獲彳于該降壓後的交流電壓， 然而，其佔據該電力轉換梦 仏 整體裝置之重量，因此心”的空間，且大幅增加 ^ ^牛低了設計的彈性裕度及增加裝置 处代。土於上述原因，有必要進一步改良上述習用太陽 犯發電之電力轉換裝置。 、―5鑑於此」本發明改良上述之_，其係將~第一 第一及第二半橋單元依序疊接，該第一及第二半橋 PK10383 07/07/05 200903960 單元之間設有一儲能裝置，·而該第二及第三半橋單元之連 接側並聯一直流/交流逆變器；且該第三半橋單元之另— 侧連設有一橋式整流器及一交流電源。藉此，當該第—及 第二半橋單兀操作成升星模式時，一直流電源可將電能經 由該第一半橋單元儲存於該儲能裝置，並經由該第二半橋 單兀及直流/交流逆變器轉換提供一交流電能至一負载，· 另外，當該第二及第三半橋單元操作成降壓模式時，該交 流電源之電能可經由該橋式整流器、第二半橋單元及第三 半橋單元賴料於_能裝置，遞㈣直流/交流逆 變器轉換提供該電能予該負載。因此，本發明除了能可藉 由該第-、第二及第三半橋單元調整直流輸出電虔之準位 ，夕一卜、:仍Γ提供—穩定的供電品質。再者，本發明藉由該 :1第二半橋單元可省去如第1圖習用的隔離變壓器97之構 I整體而，本發日㈣實具有增加供電敎度、提高發 电放率長1升儲旎裝置之使用壽命、增加設計的彈性、降 低整體的裝置重量及體積及節省裝置成本等優點。 【發明内容】 ^本卷月之主要目的係七供—種疊接式電力轉換器， ^將θ、第、一第二及一第三半橋單元依序疊接，並藉 /降壓的操作，以便提供—穩定且可調整的直流輪出 j予負載及-儲能裝置，使得本發明具有增加供電穩 ;疋度，高發電效率、提升儲能裝置之使用壽命、增加設 ^的彈性、降低整體的裝置重量及體積及節省裝置成本之 PK10383 07/07/05 200903960 π根據本發明之疊接式電力轉換器，其包含一第一半 ，單兀、第—半橋單元及—第三半橋單元。該三個半橋 早凡依ί賴形成―4接式之電路連接組態。藉由將該第 -半橋早7L及第二半橋單元操作成升壓模式，以便將一直 流電源轉換出-電能，進而提供至—負載丨再者，當該直 流電源供電不足時’將該第二半橋單元及第三半橋單元操 作成降壓模式’以便將—交流電源轉換出的另〆電能，持 續提供至該負載。 【實施方式】 為讓本發明之上述及其他目的、特徵及優點能更明 顯易懂，下文特舉本發明之較佳實施例，並配合所附圖式 ，作詳細說明如下： —Si請麥照第2圖所示，本發明較佳實施例之疊接式電 力轉換器係包含一第一半橋單元2、一第二半橋單元2、 一第三半橋單元3、一儲能裝置4、一直流/交流逆變器5 、一負載6及一橋式整流器7。該疊接式電力轉換器可將 一直流電源Vdc轉換成一交流電能予該負載使用。其中 該直流電源Vdc可為一太陽能電池。再者，該直流電源 Vdc之輸出端具有一穩壓電容c，以便降低該直流電源 之漣波成分；且在該直流電源vdc及該第—半橋單元之 間更進一步設有一反逆流二極體D，以避免電流反饋回該 直流電源Vdc。 請再參照第2圖所示，本發明較佳實施例之疊接式 電力轉換器之第一半橋單元1包含一第一上橋電力電子開The voltage and current of 96 are used to generate a 'modulation driver 95, and then the DC/DC converter 91 3 is controlled by the pulse width modulation driving signal to switch the solar electric energy to the power distribution system 96, PK10383 07707/05 200903960 For the purpose of load use. Furthermore, since the solar cell 90 is in the helmet, when the solar cell 9==unstable DC power such as at night]...the mains Vs_ can be the amount of electricity [example conversion mm ha wrong by the crystal_header 97 step-down conversion u voltage, sub-transformed through the bridge-type rectification into an external DC voltage [the external quotation " than the default DC voltage value], so that; = the value of the flow is equivalent to the above Charging, and the stored energy can be supplied to the power distribution system 96 by the direct back pressure. ;, L inverse meaning ° ° 93 operation - ΓΛ imml However, in general, the upper fan when the power distribution system 96 has redundant ^, with the following shortcomings, such as: Inverter 93 flywheel diode Although the DC/AC can be transferred to the storage capacitor 92 by day, the excess power is returned to the storage path without the regulation voltage: the pole body is only fed as a fixed DC voltage as the current passage. Second, the second: the excess coffee energy capacitor% charge rate μ ς 'box led to the shortcomings such as life. Furthermore, the power_lower_this capacitor 92 uses the life 97 to step down the mains voltage Vs~change=the isolation transformer potential still needs to be utilized to obtain the AC voltage after the step-down, however, it occupies The power converts the weight of the nightmare overall device, so the space of the heart is greatly increased. ^^ The cow has lowered the design flexibility margin and increased the device generation. For the above reasons, it is necessary to further improve the above-mentioned solar power generation. The power conversion device. The fifth and second half-bridge units are sequentially stacked, and the first and second half bridges are PK10383 07/07/05. 200903960 An energy storage device is arranged between the units, and the connection side of the second and third half bridge units is connected in parallel with the AC/AC inverter; and the other side of the third half bridge unit is connected with a bridge rectifier And an AC power supply. Thereby, when the first and second half bridges are operated in the rising star mode, the direct current power source can store the electric energy in the energy storage device via the first half bridge unit, and through the second half bridge unit And the DC/AC inverter conversion provides an AC power to a load, and in addition, when the second and third half bridge units are operated in a buck mode, the AC power source can pass the bridge rectifier, the second The half bridge unit and the third half bridge unit are in the _ energy device, and the (four) DC/AC inverter conversion provides the power to the load. Therefore, in addition to being able to adjust the level of the DC output power by the first, second and third half-bridge units, the present invention provides a stable power supply quality. Furthermore, the present invention can eliminate the overall configuration of the isolation transformer 97 as used in FIG. 1 by the second half-bridge unit, and the present invention has a power supply increase and a long power generation rate. The service life of the 1 liter storage device increases the flexibility of the design, reduces the overall weight and volume of the device, and saves the cost of the device. [Summary of the Invention] ^ The main purpose of this volume is seven supply-type stacked power converters, ^ θ, the first, the second and a third half-bridge units are sequentially stacked, and borrowed / stepped down Operation to provide a stable and adjustable DC wheel-to-load and energy storage device, so that the invention has the advantages of increased power supply stability, high power generation efficiency, improved service life of the energy storage device, and increased flexibility of the device. PK10383 07/07/05 200903960 π. The spliced power converter according to the present invention comprises a first half, a single 兀, a half-bridge unit and a Three half bridge unit. The three half-bridges are formed by the "4-connected circuit connection configuration". By operating the first half bridge early 7L and the second half bridge unit into a boost mode, the direct current power is converted out to - the electric energy, and then supplied to the load, and when the DC power supply is insufficient, The second half-bridge unit and the third half-bridge unit operate in a buck mode to continuously supply additional electrical energy converted from the AC power to the load. The above and other objects, features, and advantages of the present invention will become more apparent from the aspects of the invention. As shown in FIG. 2, the spliced power converter of the preferred embodiment of the present invention includes a first half bridge unit 2, a second half bridge unit 2, a third half bridge unit 3, and an energy storage device. 4. A current/AC inverter 5, a load 6 and a bridge rectifier 7. The spliced power converter converts a DC power source Vdc into an ac power for use by the load. The DC power source Vdc can be a solar battery. Furthermore, the output end of the DC power supply Vdc has a voltage stabilizing capacitor c to reduce the chopping component of the DC power supply; and further, a reverse counter current dipole is further disposed between the DC power supply vdc and the first half bridge unit. Body D to avoid current feedback back to the DC power supply Vdc. Referring to FIG. 2 again, the first half bridge unit 1 of the stacked power converter of the preferred embodiment of the present invention includes a first upper bridge power electronic unit.
PK10383 07/07/05 —— Q 200903960 關1 ο '—第一下捧带 _ 间电力電子開關11、一第一串聯接點12 、一弟一電感器13、〜 ^ 。該第-半橋單元C體Μ及一第，充放電電容15 轉換器之電路組態。更〜 ^ 10及第-下橋電力電^ _ φ 予開關11各自之一端串聯連接，並 於串聯處形成該第一x 端透過該反逆流二極t;;接點12 H電感1113之一 而另—端連接_ 連接該直流電源他之正端， 關10之另一端透過該〜=13 ’該第一上橋電力電子開 υ之-端及該儲能裝^體14連接到該第一充放電電容 子開關Η、第—充放電電二;而該第一下橋電力電 端連接到該直流電源Vde:錯此裝置4各自之另一PK10383 07/07/05 —— Q 200903960 Off 1 ο '—The first lower holding belt _ between the power electronic switch 11, a first series contact 12, a younger one inductor 13, ~ ^. The circuit configuration of the first-half bridge unit C body and a first, charge and discharge capacitor 15 converter. More than ^ ^ 10 and the first-lower bridge power ^ φ φ are each connected to the switch 11 in series, and the first x end is formed in series through the counter-current diode t;; one of the contacts 12 H inductor 1113 The other end connection _ is connected to the positive end of the DC power supply, and the other end of the closed 10 is transmitted through the ~=13 'the first upper bridge power electronic opening end and the energy storage device 14 is connected to the first a charge and discharge capacitor sub-switch Η, a first charge and discharge electric two; and the first lower bridge power end is connected to the DC power supply Vde: the wrong one of the device 4
Jil請再參照第2圖所；, 電力轉換器之第-半柊/、’ x明較佳實施例之疊接式 閡— +橋平元2包含一第二上橋雷六雷2 @ 、—第二下橋電力電子開關21、拉開 單^二電感器23及1二充放電電容Hfr2 早兀ί及第二丰橋嚴斤 °亥第—半橋 儲处# « … 之間係並聯該儲能梦 :如可選自一電容器或一蓄 置二:該 丰橋早7^2之電路連接組態與第-半橋單 该弟二 因此對於其各構件之連接方式不多作^ 大致相同， 元2可允許能量的雙向流動，相“該第= 一半橋單元1不同之處在於該第二半橋單_，其構件上與第 極體’而使該第二半橋單S2之第π 70 2未設有-二 的另1直接連接到該第二充放電 '電力電子開關20 半橋單元2 ΰΓ 4仙…… 24 ’因此該第二 PK10383 07/07/05 橋單 200903960 元2可操作成一升/降壓轉換器，以供該儲能裝置4進行 充電或放電時電流可雙向流動之路徑。 請再參照第2圖所示’本發明較佳實施例之疊接式 電力轉換器之第三半橋單元3包含一第二上橋電力電子開 關30、一第二下橋電力電子開關31、一第二串聯接點32 、一第二電感器33及一第二充放電電容34。該第三半橋 早元3之電路組態及各構件之連接方式與第二半橋單元2 完全相同，在此不多作贅述。另外，該直流/交流逆變器5 係並如連接在該第二及第三半橋單元2、3之間，且該負 載6係連接在該直流/交流逆變器$之後端。 -21明再苓照第2圖所示，本發明較佳實施例之疊接式 電力轉換器之第一、第二及第三半橋單元丄、2、3係相當 於，序將升壓轉換器、升/降㈣換器及降壓轉換器依疊 接式的電路拓樸组能> ^ _ 、心、相互連接，以便該第一、第二及第三 平橋早 το 1、2、q ά/ν ϊ 、 T輸出不同之直流電壓，且該直流電壓 、、:進而轉換供應電能予該負载6及儲能裝置4。 更詳古夕 ^ _ ，岈再苓照第2圖所示，本發明較佳實施 。將該r、、ri'、Vde將以—太陽能電池為例進行以下說明 、、也〕' 二源Vdc〔例如將—0〜19伏特(v)的太陽能電 Is上建1半橋單力1的聽，在其第—充放電電容 上橋電力電—子3^的轉，由於該第—半橋單元1之第— 儲能事晋=汗二10的另一端藉由該二極體14連接到該 而連接到該第I:二ί弟二半橋單元2之第二電感器23 +払早几2之第二亊聯接點22，進而形 ΡΚ10383 07/07/05 10 — 200903960 成該第一半橋單元〗疊接該第二 一 組態，因此，可將該36V白勺電心早疋2之豐接式電路 置4内，另—方面，則饋人該第儲存在該儲能裝 之轉換。 十橋早元2以進行後續 接著’請再參照第2圖所示， 第二半橋單元2升壓後，在該第的電麗經由該 電電容24建立—48V的電壓，一二二2之第一充放 之二端連接到該直流/交流逆變器久亡2放電電容24 流逆變器5可將兮48ν φ 此藉由該直流/交 a 軸換成—交流電能以 /X 吏用〔例如供應一無刷直流馬達之所需電能〕 J]另外，請再參照第2圖所示，該橋式整流器7係連 接在父洲·電源Vs及該第三半橋單元3之間，且該橋式 整流器之其中一端係連接該第三半橋單元3之第二上橋電 力電子開關30另一端，以便將—市電電壓整成一直流電 壓’該直流電壓之值約為155V’由於該第二半橋單元1 之第二上橋電力電子開關20之另一端透過該第三半橋單 兀3之第二電感器33而連接到該第三半橋單元3之串連 接點32，進而形成該第二半橋單元2疊接該第三半橋單 元3之疊接式電路組態，因此，當該第三半橋單元3操作 成降壓模式時，該第三半橋單元3可將該直流電壓155v 降壓成48V ’並在該第二半橋單元2之充放電電容建立該 48V之電壓，以便供應該直流/交流逆變器5之電壓，進 而藉由該直流/交流逆變H 5之轉換，繼續供應該交流電 PK10383 07/07/05 11 ·— 200903960 能予該負載6，此時’該第二半橋單^ 2亦操作成降屋模 式’以便將該48V之電墨降成36V之雷爆，、隹&' 电！進而使該儲 能裝置4可同時持續進行電能之儲存。 田吵且呵电源（Vdc〔 即太陽能電池〕供電正常時，該第—半橋單元丨之第— 橋電力電子開關10及第一下橋電力電子開關u分別押制 成截止〔OFF〕狀態及脈寬調變〔PWM〕切換；而該^ 一1 半橋單元2之第二上橋電力電子開關2〇及第丄下^恭: 电子開關21分別控制成〇FF狀態及pwM切換；另 该第二半橋單元3之第二上橋電力電子開關％及第 橋電力電子開關31則均控制成qff狀態。如此，— 2單71 1及第二半橋單71 2可將該直流電源Vdc依序 由該直流/交流逆變器5轉換成該交流電能， i、D亥負載6〔即無刷直流馬達〕使用。 ^能睛再Ϊ照第2圖所示，當該直流電源Vdc〔太 轉換b '進而=提供該疊接式電力轉換器進行適當的電能 =進一法供應該負載6之所需交流電能時〔例 :Γ下Γ 一半橋草元1之第一上橋電力電子開關1〇 該關11均分別控制成。FF狀態;而 子開關21分別朗成應切換及off狀態了 同樣的，該第二本捧 队〜、’ U ^ _ 间早兀3之第二上橋電力電子開關3〇 狀力電子開關…相控制成PWM切換及0FF 狀〆如此，該第三半橋單元3及第二半橋單元2可依序 PK10383 07/07/05 12 200903960 操作成降壓模式，進而將該交流電源Vs透過該橋式整流 器7、第三半橋單元3及直流/交流逆變器$轉換成該負載 6所需之交流電能；同日夺，該交流電源Vs可透過該橋式 整流器7、第三半橋單元3及第二半橋單元2依序降壓， 並將降壓後的直流電能儲存在該儲能裝置々内。 為詳細說明本發明較佳實施例之疊接式電力轉換器 之操作原理，請參照第3A'3BA4圖所示，其揭系本發 明之第-半橋單元丨、第二半橋料2及第三半橋單元3 操作成升壓或降壓模式時的電流流向圖。Jil, please refer to Fig. 2 again; the first half of the power converter, the 'x-bright combination of the preferred embodiment 阂- + bridge level 2 includes a second upper bridge Lei Liulei 2 @, -Second lower bridge power electronic switch 21, pull open single ^ two inductor 23 and 1 two charge and discharge capacitor Hfr2 early 兀 and second Fengqiao jin jin ° Haidi - half bridge storage place « « ... parallel The energy storage dream: if it can be selected from a capacitor or a storage two: the Fengqiao early 7^2 circuit connection configuration and the first-half bridge single brother 2 so the connection method for its components is not much ^ Roughly the same, element 2 allows two-way flow of energy, the phase "the first half of the bridge unit 1 differs in the second half of the bridge _, its components and the first pole body" and the second half bridge single S2 The π 70 2 is not provided - the other one is directly connected to the second charge and discharge 'power electronic switch 20 half bridge unit 2 ΰΓ 4 sen... 24 'so the second PK10383 07/07/05 bridge single 200903960 The element 2 can be operated as a one-step/step-down converter for the path in which the current can flow in both directions when the energy storage device 4 is charged or discharged. Please refer to FIG. 2 again. The third half bridge unit 3 of the stacked power converter of the preferred embodiment includes a second upper bridge power electronic switch 30, a second lower bridge power electronic switch 31, a second series contact 32, and a second The inductor 33 and a second charge and discharge capacitor 34. The circuit configuration of the third half bridge early 3 and the connection manner of each component are completely the same as those of the second half bridge unit 2, and will not be described here. A DC/AC inverter 5 is connected between the second and third half bridge units 2, 3, and the load 6 is connected to the rear end of the DC/AC inverter $. As shown in FIG. 2, the first, second, and third half-bridge units 丄, 2, and 3 of the spliced power converter of the preferred embodiment of the present invention are equivalent to the boost converter, liter/ The falling (four) converter and the buck converter are connected to each other according to the stacked circuit topology > ^ _ , heart, and mutual connection, so that the first, second, and third flat bridges are early το 1, 2, q ά / ν ϊ , T output different DC voltages, and the DC voltage, and then convert the supply of electric energy to the load 6 and the energy storage device 4. More details ^ ^ _ , Referring to Figure 2, the present invention is preferably implemented. The r, ri', and Vde will be described below by taking a solar cell as an example, and also] 'two source Vdc (for example, -0 to 19 volts) (v) The solar power is built on the 1st half bridge single force 1 and the bridge on the first charge and discharge capacitor is turned on, because the first half of the first half bridge unit 1 The other end of Jin=Khan 2 is connected to the second inductor 23 + 2 of the second half of the bridge unit 2 by the diode 14 22, and then shape 10383 07/07/05 10 — 200903960 into the first half bridge unit 〗 The second configuration is spliced, therefore, the 36V electric core can be placed 2 Inside, on the other hand, the donor is stored in the storage of the energy storage device. Ten bridges early 2 for subsequent follow-up 'Please refer to FIG. 2 again. After the second half-bridge unit 2 is boosted, the first battery is connected to the voltage of 48V via the capacitor 24, one 22-2 The first end of the first charge and discharge is connected to the DC/AC inverter for a long time. 2 The discharge capacitor 24 The inverter 5 can convert 兮48ν φ by the DC/AC axis to AC power to /X. For example, please refer to FIG. 2, the bridge rectifier 7 is connected to the parent power supply Vs and the third half bridge unit 3 And one end of the bridge rectifier is connected to the other end of the second upper bridge power electronic switch 30 of the third half bridge unit 3, so as to convert the mains voltage into a DC voltage 'the DC voltage value is about 155V' The other end of the second upper bridge power electronic switch 20 of the second half bridge unit 1 is connected to the serial connection point 32 of the third half bridge unit 3 through the second inductor 33 of the third half bridge unit 3 Forming a stacked circuit configuration in which the second half bridge unit 2 is overlapped with the third half bridge unit 3, and thus, When the third half bridge unit 3 is operated in the buck mode, the third half bridge unit 3 can step down the DC voltage 155v to 48V′ and establish the 48V voltage in the charge and discharge capacitor of the second half bridge unit 2. In order to supply the voltage of the DC/AC inverter 5, and continue to supply the AC power by the conversion of the DC/AC inverter H 5 , the load 6 can be supplied to the AC 6 at this time. 'The second half of the bridge 2 ^ also operates in the down mode' to reduce the 48V of the ink into a 36V thunder, 隹 & 'Electric! In turn, the energy storage device 4 can continuously store electrical energy at the same time. When the Vdc (that is, the solar cell) is powered normally, the first half-bridge unit is the first - the bridge power electronic switch 10 and the first lower-bridge power electronic switch u are respectively turned into the OFF state and Pulse width modulation (PWM) switching; and the second upper bridge power electronic switch 2〇 and the second lower gate of the ^1 1 half bridge unit 2: the electronic switch 21 is controlled to be 〇FF state and pwM switching respectively; The second upper bridge power electronic switch % and the second bridge power electronic switch 31 of the second half bridge unit 3 are both controlled to the qff state. Thus, the - 2 single 71 1 and the second half bridge single 71 2 can use the DC power supply Vdc. The DC/AC inverter 5 is sequentially converted into the AC power, and the i, D-hai load 6 (ie, the brushless DC motor) is used. ^ The eye can be seen again in Figure 2, when the DC power source Vdc [ Too conversion b 'and further = provide the spliced power converter to perform appropriate power = when supplying the required AC power of the load 6 in a conventional manner [Example: Γ下Γ Half of the first bridge power electronic switch of the bridge 1〇 The off 11 is controlled to the FF state respectively; and the sub-switches 21 should be switched and off respectively. The same, the second team ~, 'U ^ _ early 兀 3 of the second upper bridge power electronic switch 3 〇 force electronic switch ... phase control into PWM switching and 0FF 〆 so, the third half The bridge unit 3 and the second half bridge unit 2 can be operated in a step-down mode according to the sequence PK10383 07/07/05 12 200903960, and then the AC power source Vs is transmitted through the bridge rectifier 7, the third half bridge unit 3, and the DC/AC. The inverter converts to the AC power required by the load 6; in the same day, the AC power source Vs can be stepped down through the bridge rectifier 7, the third half bridge unit 3, and the second half bridge unit 2, and The stepped DC power is stored in the energy storage device. To explain in detail the operation principle of the stacked power converter according to the preferred embodiment of the present invention, please refer to FIG. 3A'3BA4, which discloses the present invention. The current flow diagram when the first-half bridge unit 丨, the second half bridge material 2, and the third half bridge unit 3 operate in a step-up or step-down mode.
-印再，照第3A圖所示，其揭示該第一及第；半橋單 疋卜2之第一及第二上橋電力電子開關1〇、20操作成OFF 狀L且該第-及第二半橋單元卜2之第—及第二下橋 電^子關11、21進行PWM切換之電流路徑示意圖 該PWM切換為導通〔⑽〕時，如第从圖所 下橋電力電子開_ Η、。導通，該第一半橋 ::1之碰序流經該第一電感器13及該第一下橋電 力黾子開關11 ;且該第_ ° 弟-=/23及該第二下橋電力電子開關I 妾者’請再參照第3Β ，當 早兀卜2之第一及篦-π以 步干衢 切換為〇砰，且該力電子開關Μ1之_ -l·^ ° 弟一半橋單元1、2之第一及第 一上橋電力電子開關乐 因連續而由該第—電残乃操作成^狀態時，電流 單元1之第-上橋電流出再依序流經該第—半橋 毛子開關10旁之飛輪二極體FI)、 ΡΚ10383 07/07/05 '13 200903960 二極體Η、第二電感器23、該第二半橋單元2之第二上 橋電力電手開關2G旁之飛輪二極體FD、直流/交流逆變 器5〔假設該直流/交流逆變器5之其中一組上下橋電力電 子開關導通〕及該負載6，再回到該直流電源Vdc，並對 該儲能裝置4充電。此時，該直流電源Vdc藉由該第一 及第二半橋單元1、2之知作依序升壓，以達到該負载6 之-預定供應電壓’例如’本發明之難實_中將太陽 能電池由0〜19V藉由該第一半橋單元】升壓至36V，再 藉由該第二半橋單元2升壓至48V，以供應該無刷直流馬 達之供應電壓，並將48V之電能蓄集於該儲能裝置4。-Printing, as shown in FIG. 3A, which discloses that the first and second half bridges of the first and second upper bridge power electronic switches 1 〇, 20 are operated in an OFF state and the first and The current path diagram of the second half of the second half of the bridge unit 2 and the second lower bridge of the electric switch 11 and 21 for PWM switching. When the PWM is switched to conduct [(10)], as shown in the figure below, the bridge power electronics is turned on. Oh,. Turning on, the first half bridge: : 1 is in sequence through the first inductor 13 and the first lower bridge power tweezers switch 11; and the first _ ° 弟 - = / 23 and the second lower bridge power Electronic switch I 妾 'Please refer to the third Β, when the first 篦 2 2 and 篦 π 以 步 步 步 步 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰 〇砰When the first and the first upper bridge power electronic switch music are continuously operated and the first electric residual is operated into the ^ state, the first-upper bridge current of the current unit 1 flows through the first half. Flywheel diode FI) next to bridge hair switch 10, ΡΚ10383 07/07/05 '13 200903960 diode Η, second inductor 23, second upper bridge power electric switch 2G of the second half bridge unit 2 Next to the flywheel diode FD, DC/AC inverter 5 (assuming that one of the DC/AC inverters 5 of the upper and lower bridge power electronic switches is turned on) and the load 6, return to the DC power source Vdc, and The energy storage device 4 is charged. At this time, the DC power source Vdc is sequentially boosted by the first and second half bridge units 1, 2 to achieve a predetermined supply voltage of the load 6, for example, the difficulty of the present invention. The solar cell is boosted to 36V by the first half bridge unit from 0 to 19V, and then boosted to 48V by the second half bridge unit 2 to supply the supply voltage of the brushless DC motor, and 48V Electrical energy is accumulated in the energy storage device 4.
請參照第4 _示，其揭示當該直流電源Vdc無法 正常供電時，而由該交流電源Vs進行供電之電流流向示 意圖。該第二半橋單元2及第三半橋單元3操作成降壓模 式。此時，該第二半橋單元2之第二上橋電力電子開關2〇 及第二下橋電力電子開關21分別進行PWM切換及操作 成OFF狀恋，且§亥第三半橋單元3之第二上橋電力電子 開關3〇及第二下橋電力電子開關Η同樣分別進行pwM 切換及操祕Qff狀態。若PWM域為〇n時，電流則 依^流經該第三半橋單元3之第二上橋電力電子開關3〇 、第二電《 33、直流/交流逆變器5及該負載6，以便 細接式電力轉鋪可對該負載6持續供應交流電能；同 第—半橋早^ 2之第二上橋電力電子開關20 〜乍成ON ’因此可進—步對該儲能裝置4充電。 更重要的是，請再參照第2至4圖所示，該第一半 PK10383 07/07/05 —14 200903960 、、第二半橋單元2及第三半橋單幻操作成升屢 1式可賴電路設計方式及構件額定設計其電壓升 愿或降屋’的比例，以便更彈性的獲得所欲輸出的電壓，例 如本發明較佳實施娜第—半橋單元〗由G〜i9v升愿至 ㈣’而該第二半橋單元2則進行36V至48V或術至谓 的升/降壓模式；另外，該第三半橋單元3則進行155V至 撕的降顧式。如此’該疊接式電力轉換器不論該負载 如何急劇的變動，亦可穩定的供應各級之直流電壓，例 =本發明所舉觸無刷錢馬輕加減料，該第二半橋 Γ2的輸出仍怪為48V，藉此，可提高電路操作的穩定 利用!0ί所逑5相較於習用太陽能發電之電力轉換裝置 彻直流/交流逆❹93執行能量的雙向傳遞，而益法進 一步進行錢鏈電壓的調整，進而導致儲能電容％充電 效率=彰、壽命降低及設計·降低等缺點，本發明藉由 將該弟—半橋單元1操作耕_式；該第二半橋單元2 可操作成升壓或降壓之雙向能量傳遞的模式；及該第 =元3操作成降龍式，再將各級半橋單元疊接式喊 其確實可增加供電穩定度、提高發電效率及提 置4之使轉命，_村解較小歡容量之 因此可進—步增加設計的彈性。再者，本發 ，該弟二半橋単兀3調整並轉換該交流電源Vs之電 i，而不需使用如第1 ®習用的隔離變壓器97，因此可 降低整體的裝置重量及體積，並進而節省裝置成本。 PK10383 07/07/05 15 200903960 雖然本發明已利用上述較佳實施例揭示，然其並非 用以限定本發明，任何熟習此技藝者在不脫離本發明之精 神和範圍之内，相對上述實施例進行各種更動與修改仍屬 本發明所保護之技術範疇，因此本發明之保護範圍當視後 附之申請專利範圍所界定者為準。 PK10383 07/07/05 —16 - 200903960 【圖式簡單說明】 第1圖”習用太陽能發電之電力轉換裝置之電路示意 第2圖：本發明較佳實施例之疊接式電力轉換器之電 路示意圖。 第3A圖：本發明較佳實施例之疊接式電力轉換器之第 -及第二半橋單元之上橋電力電子開關操作成qff狀態 ’且該第-及第二半橋單元之下橋電力電子開關操作成 ON的切換狀態時之電流路徑示意圖。 第3B圖：本’較佳實施例之疊接式電力轉換器之第 -及第二半橋單元之上橋電力電子開_作成卿狀態 -以，且該第—及第二半橋單元之下橋電力電子關操作^ luS OFF的切換狀態時之電流路徑示意圖。 第4圖：本發明較倖實施例之疊接式電力轉換器之第 二半橋單元之上橋及下橋電力電子開關分別控制成〇N切 換狀態及OFF狀態；且該第三半橋單元之上橋及下橋電 力電子開關同樣分別控制成ON切換狀態及OFF狀熊之 電流路徑示意圖。 【主要元件符號說明】 1 第一半橋單元 10第一上橋電力電子開關 11第一下橋電力電子開關12第—串聯接點 13第—電感器 14二極體 PK10383 07/07/05 -17 200903960Referring to Fig. 4, it is shown that when the DC power source Vdc is not able to supply power normally, the current supplied by the AC power source Vs flows to the schematic. The second half bridge unit 2 and the third half bridge unit 3 are operated in a step-down mode. At this time, the second upper-bridge power electronic switch 2〇 and the second lower-bridge power electronic switch 21 of the second half-bridge unit 2 respectively perform PWM switching and operation into OFF-like love, and §Hai third half-bridge unit 3 The second upper bridge power electronic switch 3〇 and the second lower bridge power electronic switch Η also perform pwM switching and operating Qff states respectively. If the PWM domain is 〇n, the current flows through the second upper bridge power electronic switch 3〇, the second power “33, the DC/AC inverter 5 and the load 6 of the third half bridge unit 3, In order to connect the power to the load 6, the AC power can be continuously supplied to the load 6; the second upper bridge power electronic switch 20 of the first half bridge 2 is turned ON, so that the energy storage device 4 can be advanced. Charging. More importantly, please refer to the second to fourth figures, the first half of the PK10383 07/07/05 —14 200903960, the second half of the bridge unit 2 and the third half of the bridge single illusion operation into the rising type 1 The design of the circuit and the rating of the component are designed to increase the ratio of the voltage rise or the drop of the house, so as to obtain the voltage of the desired output more flexibly. For example, the preferred embodiment of the present invention is a nano-half bridge unit. To (4)', the second half-bridge unit 2 performs a 36V to 48V or a so-called up/down mode; in addition, the third half-bridge unit 3 performs a 155V to tear-down mode. In this way, the spliced power converter can stably supply the DC voltage of each stage regardless of how the load changes abruptly. For example, the brushless money of the present invention is lightly added and subtracted, and the second half bridge 2 The output is still blamed for 48V, which can improve the stable operation of the circuit operation! 0 逑 逑 相 相 相 相 相 相 相 习 习 习 习 习 习 习 习 习 习 习 直流 直流 直流 直流 直流 执行 执行 执行 执行 执行 执行 执行 执行 执行 执行 执行 执行 执行 执行 执行 执行The adjustment of the voltage, which in turn leads to the disadvantages of the storage capacitor % charging efficiency = reduction, life reduction, design and reduction, etc., the invention is operated by the younger half-bridge unit 1; the second half-bridge unit 2 is operable The mode of two-way energy transfer into boost or step-down; and the operation of the third element is reduced to the dragon type, and then the half-bridge units of each stage are spliced and shouted to increase power supply stability, improve power generation efficiency, and provide 4 to change the life, _ village solution to the smaller size of the capacity can therefore advance - increase the flexibility of the design. Furthermore, in the present invention, the second half of the bridge 3 adjusts and converts the power of the AC power source Vs without using the isolation transformer 97 as in the first application, thereby reducing the overall weight and volume of the device, and In turn, the device cost is saved. PK10383 07/07/05 15 200903960 Although the present invention has been disclosed in the above-described preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can be made without departing from the spirit and scope of the invention. The various modifications and variations are still within the technical scope of the present invention, and the scope of the present invention is defined by the scope of the appended claims. PK10383 07/07/05 —16 - 200903960 [Simplified Schematic] FIG. 1 is a schematic diagram of a circuit of a power conversion device for conventional solar power generation. FIG. 2 is a circuit diagram of a stacked power converter according to a preferred embodiment of the present invention. Figure 3A: The bridge power electronic switch of the first and second half-bridge units of the stacked power converter of the preferred embodiment of the present invention operates in the qff state 'and below the first and second half-bridge units Schematic diagram of the current path when the bridge power electronic switch is operated in the ON state. FIG. 3B is a diagram showing the power supply of the first and second half-bridge units of the stacked power converter of the preferred embodiment. A schematic diagram of the current path when the switching state of the bridge power electronic shutdown operation ^ luS OFF is under the first and second half-bridge units. Figure 4: Cascading power conversion of the more advantageous embodiment of the present invention The upper half bridge unit upper bridge and the lower bridge power electronic switch are respectively controlled into a 〇N switching state and an OFF state; and the third half bridge unit upper bridge and the lower bridge power electronic switch are also respectively controlled to an ON switching state. And OFF-shaped bear Schematic diagram of current path. [Main component symbol description] 1 Half bridge unit 10 First upper bridge power electronic switch 11 First lower bridge power electronic switch 12 - Series contact 13 - Inductor 14 diode PK10383 07/ 07/05 -17 200903960
15 第一充放電電容 2 第二半橋單元 20 第二上橋電力電子開關 21 第二下橋電力電子開關 22 第二串聯接點 23 第二電感器 24 第二充放電電容 3 第三半橋單元 30 第三上橋電力電子開關 31 第三下橋電力電子開關 32 第三串聯接點 33 第三電感器 34 第三充放電電容 4 儲能裝置 5 直流/交流逆變器 6 負載 7 橋式整流器 90 太陽能電池 91 直流/直流轉換器 92 儲能電容 93 直流/交流逆變器 94 數位處理器 95 脈波調變驅動器 96 配電系統 97 隔離變壓器 98 橋式整流器 Vdc 直流電源 C 穩壓電容 D 反逆流二極體 Vs 交流電源 FD 飛輪二極體 PK10383 07/07/05 —18 —15 first charge and discharge capacitor 2 second half bridge unit 20 second upper bridge power electronic switch 21 second lower bridge power electronic switch 22 second series contact 23 second inductor 24 second charge and discharge capacitor 3 third half bridge Unit 30 Third upper bridge power electronic switch 31 Third lower bridge power electronic switch 32 Third series contact 33 Third inductor 34 Third charge and discharge capacitor 4 Energy storage device 5 DC/AC inverter 6 Load 7 Bridge Rectifier 90 Solar Cell 91 DC/DC Converter 92 Energy Storage Capacitor 93 DC/AC Inverter 94 Digital Processor 95 Pulse Modulation Driver 96 Distribution System 97 Isolation Transformer 98 Bridge Rectifier Vdc DC Power Supply C Regulator Capacitor D Countercurrent diode Vs AC power FD Flywheel diode PK10383 07/07/05 —18 —