五、新型說明： 【新型所屬之技術領域】 達驅動4置，尤其是指—種具緩啟動的交流馬 達驅動裝置。 【先前技術】 習知的交流馬達驅純，為了要控制轉速 ，常見的方 f夕採用雙向三極間流體（Tri〇de for Alternating =ent; ’ 或稱 bldlreetiQnai tHQde thyrist〇r) =亡透過不_相位觸發角度，即可使馬達兩端獲得不 進而控制馬達的轉速。使用雙向三極問流 端速控制H單純，只需於交流電源 =用電阻f料路（RGeimiit)^t所產生的相位 “配合UJT、PUT、DIAC等元件所組成的觸發電 =可，喊由改變RC充放魏路的電阻值，就可以^ °極閘體的觸發相位角有〇到180度的變化。 馬達的相位控制方法可依據使騎f求制定交流 4T速’但由於RC充放電線路中的電阻選定好電阻值 就固疋了電容上所反應的相位差，因此便盔法押劍爵 =慢啟動。也就是說…般透過相位控制來制定^的 =馬達驅動控制器’當選定轉速後送入交流電源轉 以對應於雙向三極黯體所導通之相位角的 作，無法進行轉速調整。 、 馬達的轉動原理在於使定子或轉子產生旋轉 ，瞬間，首先必須克服最大靜磨擦力，子5 S開始轉動。在轉動後因為轉子追隨旋轉磁場，因此可尸 M378570 速差便可得到額定轉速。其中， 為了要克服最大靜磨擦力，就必須要有足夠的磁場產生， 而這個磁場當然就由馬達的繞線來提供。 當控制器所設定的轉速為低轉速時，亦即相位角的角 度大’所得到的有效電源低’因此在馬達啟動瞬間，加於 晚線上的有效電流是低的’所以產生的磁力線相對較低， 而對於馬達而言，較低的有效電流可以有效的保護繞線。 相對來說，當轉速設定為高轉速時，由於相位角小，所得 到的有效電流及磁力較高，因此對於馬達而言， 過於快速的啟動，是會影響整體的使用壽命的。/ ' 由此可知，習知的RC充放電線路的相位角控制方式， 雖可達到馬達定轉速的控制’但由於無法調整馬達啟動時 的轉速’因此也就無法有效的保護馬達的使用壽命。另一 方面，RC充放電線路的相位角控制法雖可將相位角固定在 〇度到180度之間，但於實際的應用中，因雙向三極 體存在較大關發電位，所以相位角無法達到真正的^ 度’也就是說’馬達紐在有效電源輸人為全弦波的情況 下運轉’這將使得馬達無知时鋪所狀轉速來運轉。 【新型内容】 有鑑於此，本創作所要克服的技術問題在於，提供一 ^焉達的驅動#置’讓馬達在啟動時的轉速能夠以緩慢提 f的方式來逐漸達到使用者所設定的轉速，使馬達不會因 f突然承受過大的有效電源而縮短使用壽命，並進-步提 歼線路的穩定性與實用價值。 為了達到上述目的’根據本創作的-方案，提供-種 4 ^緩啟動的交流馬達驅動裝置，應用於接收-交流電源並 馬達，雜崎置包括有—取樣單元、—緩啟動控 刺早元以及一馬達驅動單元。 其中’取樣單純接於技_，时録交流電源 垃收取樣錢，k啟動控制單元㈣於取樣單元，用來 樣電壓，並依據取樣電壓產生—緩啟動控制訊號； =達驅鮮元_接於緩啟動控鮮元，㈣接收缓啟 訊號，並依據緩啟動控制訊號來控制交流電源供應 :^的有效電力’讓馬達轉速能以逐漸上升的方式達到 使用者所設定的轉速。 ⑽一進I兒明’ δ亥緩啟動控制單元包括一漸降電壓產生 :=i:比較單元’其中漸降電壓產生單元是用以產生 二牛1 ’而比較單元則♦禺接於漸降電壓產生單元和取 ίΓΓ用來接收漸降電壓和取樣電壓作比較，並產生緩 啟動控制訊號。 =’緩啟動控制單元中的該漸降電壓產生單元包括有 考電壓產生單元以及一減法器，其 接收使用者的轉速設定，並依據使用 曰雨二速產生一轉速設定電壓；參考電壓產生單元 參考電壓；而減法器_接於轉速設定單元 電壓元’用來接收參考電壓以及轉速設定 電£作相減的動作，以產生漸降電壓。 ^夕卜^達驅動單元則包括有—光輕合交流二極體以 的二=流體，其中光輕合交流二罐接於上述 驅L 70 ’ _接收峨動控龍號，並產生一 w 现號；而雙向三極閘流體_接於光耗合交流 M378570 .極體 流體驅動訊號，並依據閘流體驅動訊 5虎來控制交流電源供應給馬達的有效電力。 藉由本創作之馬達驅動裝置來執行馬達的轉迷驅動控 制’會讓馬射緩啟_機制，喊過緩啟㈣方式來驅 動馬達’㈣使馬達整體的❹壽命延長，並且使線路的 穩定性以及實用價值得以提昇。 以上之概述與接下來的實施例，皆是為了進_步說明 本創作之技術手段與達成功效，然所敘述之實施例與圖式 僅提供參考與說_ ’並非用來對本創作加以限制者。 【實施方式】 請參照第-圖’為具緩啟動的交流馬達驅動裳置的一 ，實施例之方塊圖’包括有—取樣單元3G、—緩啟動控制 單7G 40以及-馬達驅動單元50，該具緩啟動的交流馬達 驅動裝置是用以，收-交流電源Va。並作—馬達6()的驅動。 其中’取樣單元30會依據所輸入的交流電源Vac，來 產生與父流電源vAG相位相同的—轉電壓Vs_e，並傳 送給緩啟動控制單元40。而為了讓取樣電壓Vsample能夠 被後端電路（如緩啟動控制單元4G)所應用，取樣電壓 ^sample的訊號能量相較於交流電源^而言必須作適當的 衰減’例如用電阻作分壓’或是使用小電容分壓。其中若 要使用電容作分壓，便需要注意不可使用電容值過大的電 容，因為會使取樣電壓Vsample的相位與交流電源〜的相 位產生過大的偏差。 接著，緩啟動控制單元4〇會依據該取樣電壓Vsample 以及使用者所設定㈣速，來產生—緩啟動控制訊號 6 M378570V. New description: [New technical field] The drive 4 is set, especially the slow-start AC motor drive. [Prior Art] Conventional AC motor drive is pure, in order to control the speed, the common side is a two-way three-pole fluid (Tri〇de for Alternating = ent; 'or bldlreetiQnai tHQde thyrist〇r) = dead through _ phase trigger angle, so that the motor can obtain the speed of the motor without controlling the motor. Use two-way three-pole current terminal speed control H simple, only in the AC power = use the resistance f material path (RGeimiit) ^ t generated phase "with UJT, PUT, DIAC and other components composed of trigger electricity = can, shout By changing the resistance value of the RC charging and discharging Wei Road, the trigger phase angle of the ^^ pole body can be changed to 180 degrees. The phase control method of the motor can be based on making the AC 4T speed 'but the RC charging The resistor in the discharge line is selected to have a good resistance value to fix the phase difference reflected on the capacitor. Therefore, the helmet is pressed and the slow start is started. That is to say, the phase control is used to formulate the = motor drive controller. When the selected speed is sent to the AC power supply to correspond to the phase angle of the two-way three-pole body, the speed adjustment cannot be performed. The principle of the rotation of the motor is to rotate the stator or the rotor. In an instant, the maximum static must be overcome. The friction force, the child 5 S starts to rotate. After the rotation, because the rotor follows the rotating magnetic field, the speed can be obtained from the speed difference of the corpse M378570. In order to overcome the maximum static friction force, it is necessary to have enough The magnetic field is generated, and this magnetic field is of course provided by the winding of the motor. When the speed set by the controller is low, that is, the angle of the phase angle is large, the effective power supply is low, so at the moment of motor starting, The effective current applied to the night line is low' so the resulting magnetic field line is relatively low, while for the motor, the lower effective current can effectively protect the winding. Relatively speaking, when the speed is set to high speed, due to The phase angle is small, and the effective current and magnetic force are high. Therefore, for the motor, too fast start-up will affect the overall service life. / ' It can be seen that the phase angle of the conventional RC charge and discharge line The control method can achieve the control of the motor's fixed speed 'but the speed cannot be adjusted when the motor is started', so the service life of the motor cannot be effectively protected. On the other hand, the phase angle control method of the RC charging and discharging line can be The phase angle is fixed between 180 degrees, but in practical applications, the phase angle cannot be reached because the bidirectional triode has a large power generation position. The true ^ degree' means that the motor is running in the case of a full power supply with a valid power input. This will make the motor run at a idling speed when the motor is ignorant. [New content] In view of this, this creation has to be overcome. The technical problem is that the drive #1' is enabled to allow the motor to start to reach the speed set by the user in a slow manner, so that the motor does not suddenly suffer an excessively large effective power supply due to f. And shorten the service life, and further improve the stability and practical value of the line. In order to achieve the above purpose, according to the creation of the scheme, a 4^ slow-start AC motor drive device is applied to the receiving-AC power supply. The motor, Zaozaki set includes - sampling unit, - slow start control and early motor and a motor drive unit. Where 'sampling is simply connected to the technology _, recording AC power to collect sample money, k start control unit (four) in the sampling unit , used for the sample voltage, and generated according to the sampling voltage - slow start control signal; = up to the fresh element _ connected to the slow start control fresh element, (4) receiving the slow start signal, and based on The slow start control signal controls the AC power supply: ^The effective power' allows the motor speed to reach the user-set speed in a gradual rise. (10) One into the I-Ming' δHai slow start control unit includes a decreasing voltage generation: = i: comparison unit 'where the decreasing voltage generating unit is used to generate two cattle 1 ' and the comparing unit is 禺 connected to the falling The voltage generating unit and the receiving voltage are used to receive the falling voltage and the sampling voltage for comparison, and generate a slow start control signal. = The ramp-down voltage generating unit in the slow-start control unit includes a test voltage generating unit and a subtractor that receives the user's rotational speed setting and generates a rotational speed setting voltage according to the use of the second rain speed; the reference voltage generating unit The reference voltage is connected to the speed setting unit voltage element for receiving the reference voltage and the speed setting action for subtracting to generate a falling voltage. ^ 夕 卜 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达 达The two-way three-pole thyristor fluid is connected to the light-consuming AC M378570. The polar body drives the signal and controls the effective power supplied by the AC power to the motor according to the thyristor drive. The motor drive unit of the present invention is used to perform the motor's slamming drive control, which will cause the horse to slow down, the mechanism, and the slow start (four) way to drive the motor' (4) to extend the overall life of the motor and to make the line stable. And the practical value has been improved. The above summary and the following examples are for the purpose of explaining the technical means and achieving the effect of the present invention, but the described embodiments and drawings only provide reference and say _ 'not used to limit the creation. . [Embodiment] Please refer to the first figure 'for a slow-starting AC motor drive, the block diagram of the embodiment' includes a sampling unit 3G, a slow start control unit 7G 40, and a motor drive unit 50. The slow-start AC motor driving device is used for receiving-AC power supply Va. And as the drive of the motor 6 (). The sampling unit 30 generates a rotation voltage Vs_e which is the same as the phase of the parent current power supply vAG according to the input AC power supply Vac, and transmits it to the slow start control unit 40. In order to allow the sampling voltage Vsample to be applied by the back-end circuit (such as the slow-start control unit 4G), the signal energy of the sampled voltage ^sample must be appropriately attenuated compared to the AC power supply ^ for example, by using a resistor for voltage division. Or use a small capacitor to divide the voltage. If a capacitor is used for voltage division, care must be taken not to use a capacitor with an excessively large capacitance value because the phase of the sampling voltage Vsample is excessively deviated from the phase of the AC power supply. Then, the slow start control unit 4 产生 generates a slow start control signal according to the sampling voltage Vsample and the (four) speed set by the user. 6 M378570
Vcontrol並傳送給馬達驅動單元5〇，然後馬達驅動單元 50便會依據緩啟動控制訊號vc〇ntr〇i來調整交流電源^ 知加於馬達60的有效電力，讓馬達6〇能以緩慢啟動的方 式逐漸將轉速提升到使用者所設定的目標轉速，以提昇線 路的穩定度。 ' 其中，緩啟動控制單元4〇中有一漸降電壓產生單元 41以及一比較單元43，該漸降電壓產生單元41會產生一 漸降電壓Vsub並傳送到比較單元43，而比較單元43會將Vcontrol is transmitted to the motor drive unit 5〇, and then the motor drive unit 50 adjusts the AC power source according to the slow start control signal vc〇ntr〇i to know the effective power applied to the motor 60, so that the motor 6 can be slowly started. The method gradually increases the rotation speed to the target speed set by the user to improve the stability of the line. Wherein, the slow start control unit 4A has a falling voltage generating unit 41 and a comparing unit 43, the ramping voltage generating unit 41 generates a falling voltage Vsub and transmits it to the comparing unit 43, and the comparing unit 43
漸降電壓Vsub與取樣電壓Vsample作比較，以產生出該緩 啟動控制訊號Vcontrol。 X 另外，父流馬達驅動裝置中更可包含一全波整流單元 10以及一運作指示單元20 ,該全波整流單元1〇是用來將 所輸入的交流電源VAC作全波整流，而運作指示單元2〇則 是用來指示目前的運作狀態。The falling voltage Vsub is compared with the sampling voltage Vsample to generate the slow start control signal Vcontrol. Further, the parent flow motor driving device further includes a full-wave rectifying unit 10 and an operation indicating unit 20 for performing full-wave rectification of the input AC power source VAC, and operating instructions Unit 2〇 is used to indicate the current operating status.
運作指示單元20包含有一線性整流單元21、一第一 發光二極體LED1以及一運作開關單元（第—圖中未示）， 其中該運作開關單元與線性整流單元21 _接。錢 透過運作開關單7G命令馬達60轉動，線性整流單元21就 會開始動作’讓第-發光二極體LED1接收到電力而發光?， 如此便能夠提示使用者此時馬達60處於運轉的狀熊2下。 另外，運作指示單元20更可包含有—電源^J單元 23以及-第二發光二極體LED2，電源偵測單元23會偵測 是否有交流電源Vac輸入交流馬達驅動裴置中，若 送電力給第二發光二極體LED2，讓第二發光二^體· 發光’以提示使用者此時交流電源、Vac是處於正常輸 態。當然，當使用者透過運作開關單元（第—圖中未示） 7 M378570 命令馬達60開始運作且第一發光二極體LED1發光後，第 二發光二極體LED2可設定成會自動熄滅，因為既然第一發 光二極體LED1都已經正常發光了，即表示此時交流電源 Vac已是處於正常輸入的狀態，便不需要第二發光二極體 LED2來指示是否有交流電源Vac。 值得一提的是，交流馬達驅動裝置更可包括一保護單 元（第一圖中未示），耦接於交流電源vAC，用來保護該交 流馬達驅動裝置。保護單元中可以設置有一限流電阻（第 一圖中未示）以及一保險絲（第一圖中未示），其中該限流 電阻可以用來限制流入交流馬達驅動裝置的電流大小，而 保險絲則是當線路溫度過高時，停止交流電源VAC輸入交流 馬達驅動裝置。 明參照弟一圖’為取樣電壓Vsamp 1 e與交流電源vac 的一種實施例之波形示意圖，並請配合參照第一圖。第一 圖中所示的取樣電壓Vsample波形是由全波整流單元 將交流電源νΛ。作全波整流，並透過取樣單元3〇作降壓處 理後得到的，其中取樣電壓Vsamp丨e與交流電源^之^ $ 有相位差。 ^ 接著請參照第三圖，為緩啟動控制單元4〇中的漸降電 壓產生單元41的一種實施例之示意圖，為了使馬達卯啟 動時具有加速的功能，在漸降電壓產生單元41採用了一 速設定單元411、-參考電壓產生單元4丨3以及一減法器 415，來產生漸降電壓vsub。 ° 轉速設定單元411是用來讓使用者設定馬達6〇 速’有-可變電阻Ralt，係依據使用者所設糾轉 驅動鐘—作分壓，以產生轉速設定電壓_，並 8 速設定電壓Vset傳送至減法器415。 參考電壓產生單元413包含有一第—電阻以、一第二 電阻R2以及—電容C。如第三圖中所示，第一電阻R11 第二電阻R2相互串聯，而電容€則與第 ’、 =置啟動時，輸入減法器-正：端 的參考電£ V+在-開始時會等於輯電壓^，吨 電容C的充電效應，參考電壓v+會逐漸τ降到第—電阻則 和第二電阻R2之間的分壓數值’因此，參考電壓ν+合有 漸降的波形產生。另外，參考電壓產生單元413更可^含 -茂流電阻Rb’用來在交流馬達驅動裝置沒有運作時將電 容C中所儲存的電力作麟，讓下—次交流馬達驅動襄置 啟動時，參考電壓產生單元413能夠提供正確的參考電 V+。 減法器415的正向輸入端接收參考電壓v+，反向輸入 端接收轉速設定電壓Vset，將兩電壓作相減後輸出一漸降 電壓Vsub。請參照第四圖，為漸降電壓產生單元41中的 各點波形的一種實施例之示意圖，如圖所示，參考電壓v+ 會有漸降的情況，而在本實施例中是假設使用者透過轉速 設定單元411設定馬達60為全速運轉，因此轉速設定電壓 Vset的大小會被設定成正好是參考電壓v+所趨近的數 值，如此一來，減法器415將參考電壓V+與轉速設定電壓 Vset作相減所輸出的漸降電壓Vsub’便會如第四圖中所示 逐漸趨近於零。 接下來請參照第五圖，為比較單元43的一種實施例的 示意圖，如圖所示，比較單元43接收了上述減法器415 所產生的漸降電壓VsUb以及取樣單元30所產生的取樣電 C Vsample進仃比較’以輸出緩啟動控制滅Vc〇ntr〇1。 請配合參照第六圖，比較單元43接收漸降電壓偏與取 樣電壓Vsa丨叩le進行比較’當取樣電壓v_le大於漸降 電壓Vsub時’會輪出高準位的訊號，相反的，當取樣電壓 Vsample小於漸降電壓vsub時，則會輸出低準位的訊號。 ^因此，比較單元43輸出的緩啟動控制訊號Vcontrol 就會如第六圖中所示，產生工作週期（Duty逐漸 增加的方波。而因為本實施例的漸降電壓Vsub逐漸趨近於 零’所以最後崎單元43纽的緩啟動控制訊號Vc〇ntr〇i 會是連續的高準位。 凊參照苐七圖，為馬達驅動單元的一種實施例之示 意圖，並配合參照第八圖的波形圖。第七圖中包含有一光 耦合交流二極體 PD (Diode for Alternating Current ; DIAC)以及一雙向三極閘流體忸（TRIAC)。光耦合交流二 極體PD接收到緩啟動控制訊號Vc〇ntr〇1後，便會產生一 閘流體驅動訊號來觸發雙向三極閘流體TR的閘極，讓雙向 三極閘流體TR控制交流電源Vm;施加於馬達6〇上的有效電 壓Vmotor (如第八圖中所示），讓馬達6〇的轉速以逐漸上 升的方式達到使用者所設定的數值，例如，本實施例中是 以使用者设定馬達60全速轉動來作說明，因此有效電壓 Vmotor最後會以全弦波的狀態施加於馬達6〇，讓馬達6〇 得以全速運轉。 當然，透過前述轉速設定電壓Vset的調變，來調整漸 降電壓V s u b最終趨近的數值，可使穩態後的緩啟動控制訊 號Vcontrol的正緣觸發角設定在使用者所需的任意數 值。透過設定不同的轉速設定電壓Vset來改變緩啟動控制The operation indicating unit 20 includes a linear rectifying unit 21, a first LED diode 1 and an operation switching unit (not shown), wherein the operation switching unit is connected to the linear rectifying unit 21_. The money is rotated by the operation switch 7G command motor 60, and the linear rectifying unit 21 starts to operate. [Let the first-light-emitting diode LED1 receive power and emit light, so that the user can be prompted to operate the motor 60 at this time. 2 times. In addition, the operation indicating unit 20 further includes a power source unit 23 and a second light emitting diode LED 2. The power detecting unit 23 detects whether an AC power source is input into the AC motor driving unit. The second light-emitting diode LED2 is given a second light-emitting diode to emit light to prompt the user that the AC power source and Vac are in a normal state. Of course, when the user operates the switch unit (not shown) 7 M378570 to command the motor 60 to start operating and the first LED LED 1 emits light, the second LED LED 2 can be set to automatically turn off because Since the first LEDs 1 have been normally illuminated, that is, the AC power supply Vac is already in the normal input state, the second LED LED 2 is not required to indicate whether there is an AC power Vac. It is worth mentioning that the AC motor driving device further includes a protection unit (not shown in the first figure) coupled to the AC power source vAC for protecting the AC motor driving device. The current limiting resistor (not shown in the first figure) and a fuse (not shown in the first figure) may be disposed in the protection unit, wherein the current limiting resistor may be used to limit the current flowing into the AC motor driving device, and the fuse is When the line temperature is too high, stop the AC power supply VAC input AC motor drive. A schematic diagram of an embodiment of the sampling voltage Vsamp 1 e and the AC power supply vac is shown in the accompanying drawings, and please refer to the first figure. The sampled voltage Vsample waveform shown in the first figure is an AC power supply νΛ by a full-wave rectifying unit. The full-wave rectification is performed by the sampling unit 3, and the sampling voltage Vsamp丨e is out of phase with the AC power source. Next, referring to the third figure, a schematic diagram of an embodiment of the ramp-down voltage generating unit 41 in the slow-start control unit 4A is employed in the ramp-down voltage generating unit 41 in order to have an acceleration function when the motor is started. The first speed setting unit 411, the reference voltage generating unit 4丨3, and a subtractor 415 generate a falling voltage vsub. ° The rotation speed setting unit 411 is for allowing the user to set the motor 6 idle speed - the variable resistance Ralt, according to the user's setting of the correction drive clock - for partial pressure to generate the rotation speed setting voltage _, and set the 8 speed The voltage Vset is passed to the subtractor 415. The reference voltage generating unit 413 includes a first resistor, a second resistor R2, and a capacitor C. As shown in the third figure, the first resistor R11 and the second resistor R2 are connected in series with each other, and the capacitance of the capacitor and the first and the = start, the input subtractor-positive: the reference voltage of the terminal V V + at the beginning will be equal to Voltage ^, the charging effect of the capacitor C, the reference voltage v+ will gradually decrease to the voltage value between the first resistor and the second resistor R2. Therefore, the reference voltage ν+ is combined with a decreasing waveform. In addition, the reference voltage generating unit 413 may further include a --flow current resistor Rb' for using the power stored in the capacitor C when the AC motor driving device is not operating, so that the next-stage AC motor driving device is activated. The reference voltage generating unit 413 can provide the correct reference power V+. The forward input terminal of the subtractor 415 receives the reference voltage v+, and the reverse input terminal receives the rotational speed set voltage Vset, and subtracts the two voltages to output a falling voltage Vsub. Referring to the fourth figure, it is a schematic diagram of an embodiment of the waveform of each point in the decreasing voltage generating unit 41. As shown in the figure, the reference voltage v+ may gradually decrease, and in this embodiment, the user is assumed to be a user. The rotation speed setting unit 411 sets the motor 60 to operate at full speed. Therefore, the magnitude of the rotation speed setting voltage Vset is set to a value that is close to the reference voltage v+. Thus, the subtractor 415 sets the reference voltage V+ and the rotation speed setting voltage Vset. The fade-down voltage Vsub' outputted by the subtraction gradually approaches zero as shown in the fourth figure. Referring to the fifth figure, a schematic diagram of an embodiment of the comparing unit 43 is shown. As shown, the comparing unit 43 receives the falling voltage VsUb generated by the subtractor 415 and the sampling power generated by the sampling unit 30. Vsample is compared to 'to output slow start control to disable Vc〇ntr〇1. Referring to the sixth figure, the comparing unit 43 receives the falling voltage offset and compares the sampling voltage Vsa丨叩le 'When the sampling voltage v_le is greater than the falling voltage Vsub', the high level signal is turned on. Conversely, when sampling When the voltage Vsample is smaller than the falling voltage vsub, a low level signal is output. ^ Therefore, the slow start control signal Vcontrol outputted by the comparing unit 43 produces a duty cycle (a square wave in which Duty gradually increases as shown in the sixth figure. And since the falling voltage Vsub of the present embodiment gradually approaches zero) Therefore, the slow start control signal Vc〇ntr〇i of the last Saki unit 43 Newton will be a continuous high level. 凊 Refer to the seventh diagram, which is a schematic diagram of an embodiment of the motor drive unit, and with reference to the waveform diagram of the eighth figure. The seventh figure includes a photocoupler diode (Diode for Alternating Current; DIAC) and a bidirectional triode gate fluid (TRIAC). The optically coupled AC diode receives a slow start control signal Vc〇ntr After 〇1, a thyristor drive signal is generated to trigger the gate of the bidirectional triode thyristor TR, and the bidirectional triode thyristor TR controls the AC power source Vm; the effective voltage Vmotor applied to the motor 6〇 (such as the eighth As shown in the figure, the rotation speed of the motor 6〇 is gradually increased to the value set by the user. For example, in the present embodiment, the user sets the motor 60 to rotate at full speed, and thus is effective. The voltage Vmotor is finally applied to the motor 6〇 in a state of full chord, so that the motor 6〇 can be operated at full speed. Of course, by adjusting the speed setting voltage Vset, the value of the gradually decreasing voltage Vsub is finally approached. The positive edge trigger angle of the slow start control signal Vcontrol after steady state is set to any value required by the user. The slow start control is changed by setting different speed setting voltages Vset.
50。交流電源yAe會經 並透過取樣單元30產 過王波整流單元1〇進行全波整流， 生一取樣電壓Vsample傳送至晶片lci。其^ 是包含了減法器415以及比較單元43的模組 1。其中晶片ici即 的模組’接收了轉速 =疋單兀411所產生的轉速設定電壓Vset、參考電壓產生 單兀413所產生的參考電壓V+，以及取樣單元30所產生 的取樣電壓Vsample後’產生緩啟動控制訊號v⑽计〇】 並傳送到馬達驅動單元5〇〇 *馬達驅動單A 5〇中的IC2即是光柄合交流二極體 的模組，接收緩啟動驅動訊號Vcontrol後，產生閘流體驅 =訊號來觸發雙肖三極岐體T R的導通錢止，以控制交 oil電源Vac施加於馬達6〇上的有效電壓乂⑴的沉。另外，限 流電阻Rr是用來限制交流電源^輸入的電流大小；保險 絲F1是當線路溫度過高時停止交流電源Vac輸入給交流馬 達驅動裝置；而保險絲F2則是當線路過高時，停止交流電 源Vac輸入給馬達60以及馬達驅動單元50。 表τ'上所述’由於施加於馬達的有效電壓於啟動瞬間觸 ^角度接近90度’而隨時間經過會逐漸回復到轉速設定電 壓的觸發角’因此藉由本創作具緩啟動的交流馬達驅動裝 置，除了能夠設定馬達的運作轉速，還能夠進一步提供馬 達緩啟動的機制’以延長馬達的使用壽命以及增加電路的 穩定度 圖式，而本 在本創作之領域中申她咖鱗’任何 【圖式簡單說明】 第圖為本創作具緩啟動的交流馬達驅動裝置的一種實施 例之方塊圖； 第二圖為本創作中的交流電源與取樣電壓的〆種實施例之 波形圖； 第二圖為本創作的漸降電壓產生單元的—種實施例之示意 圖； 第四圖為本創作的參考電壓、轉速設定電壓與漸降電壓的 一種實施例之波形圖； 第五圖為本創作的比較單元的一種實施例之示意圖； 第六圖為本創作的取樣電壓、漸降電壓與緩啟動驅動訊號 的一種實施例之波形圖； 第七圖為本創作中的馬達驅動單元的一種實施例之示意 圖； 第八圖為本創作的緩啟動驅動訊號與馬達有效電壓的一種 實施例之波形圖；以及 第九圖為本創作具緩啟動的交流馬達驅動裝置的一種實施 例之電路圖。 【主要元件符號說明】 12 M378570 10 全波整流單元 20 運作指示單元 21 線性整流單元 23 電源偵測單元 30 取樣單元 40 緩啟動控制單元 41 漸降電壓產生單元 411 轉速設定單元 '413 參考電壓產生單元 415 減法器 43 比較單元 50 馬達驅動單元 60 馬達 Vac交流電源 Vsample取樣電壓 Vcontrol 緩啟動控制訊號 Vsub 漸降電壓 Vset 轉速設定電壓 V+ 參考電壓 Vcc 驅動電壓 Vmotor 有效電壓 LED1第一發光二極體 LED2第二發光二極體 TR 雙向三極閘流體 PD 光耦合交流二極體 ia、ic2晶片 13 M378570 R1 第一電阻 R2 第二電阻 Ralt 可變電阻 Rb 洩流電阻 Rr 限流電阻 C 電容 F1、F2 保險絲50. The AC power source yAe is subjected to full-wave rectification via the sampling unit 30 via the Wangbo rectifying unit 1 , and a sampling voltage Vsample is transmitted to the wafer 1ci. It is a module 1 including a subtractor 415 and a comparison unit 43. The module ici of the wafer ici receives the rotation speed setting voltage Vset generated by the rotation speed 疋 兀 411, the reference voltage V+ generated by the reference voltage generation unit 413, and the sampling voltage Vsample generated by the sampling unit 30. The slow start control signal v(10) is transmitted to the motor drive unit 5〇〇*, and the IC2 in the motor drive unit A 5〇 is the module of the optical shank and the AC diode. After receiving the slow start drive signal Vcontrol, the brake is generated. The fluid drive = signal triggers the conduction of the double-short three-pole body TR to control the sinking of the effective voltage 乂(1) applied to the motor 6〇 by the AC power supply Vac. In addition, the current limiting resistor Rr is used to limit the current of the AC power source input; the fuse F1 is to stop the AC power supply Vac input to the AC motor driving device when the line temperature is too high; and the fuse F2 is to stop when the line is too high. The AC power supply Vac is input to the motor 60 and the motor drive unit 50. In the table τ', the 'actuated voltage applied to the motor is close to 90 degrees at the moment of starting, and the angle of the gradual return to the set value of the rotational speed setting voltage is lapsed over time'. Therefore, the AC motor is driven by the slow start of the present invention. The device, in addition to being able to set the operating speed of the motor, can further provide a mechanism for slow start of the motor to extend the service life of the motor and increase the stability of the circuit, and in the field of the creation, the application of her scales is arbitrary. BRIEF DESCRIPTION OF THE DRAWINGS The figure is a block diagram of an embodiment of an AC motor driving device with a slow start; the second figure is a waveform diagram of an embodiment of an AC power source and a sampling voltage in the creation; The figure is a schematic diagram of an embodiment of a step-down voltage generating unit of the present creation; the fourth figure is a waveform diagram of an embodiment of the reference voltage, the speed setting voltage and the decreasing voltage of the creation; A schematic diagram of an embodiment of a comparison unit; the sixth diagram is a real example of the sampling voltage, the falling voltage and the slow start driving signal of the creation The waveform diagram of the embodiment; the seventh diagram is a schematic diagram of an embodiment of the motor driving unit in the creation; the eighth diagram is a waveform diagram of an embodiment of the slow start driving signal and the motor effective voltage; and the ninth The figure is a circuit diagram of an embodiment of an AC motor drive device with a slow start. [Main component symbol description] 12 M378570 10 Full-wave rectification unit 20 Operation instruction unit 21 Linear rectification unit 23 Power detection unit 30 Sampling unit 40 Slow-start control unit 41 Fading voltage generation unit 411 Rotation speed setting unit '413 Reference voltage generation unit 415 Subtractor 43 Comparison Unit 50 Motor Drive Unit 60 Motor Vac AC Power Supply Vsample Sampling Voltage Vcontrol Slow Start Control Signal Vsub Falling Voltage Vset Speed Setting Voltage V+ Reference Voltage Vcc Drive Voltage Vmotor Effective Voltage LED1 First Light Emitting Diode LED2 Second LED Diode TR Bidirectional Triode Gate Fluid PD Optically Coupled AC Diode IA, ic2 Chip 13 M378570 R1 First Resistor R2 Second Resistor Ralt Variable Resistor Rb Discharge Resistor Rr Current Limiting Resistor C Capacitor F1, F2 Fuse