1355,130 九、發明說明： 【發明所屬之技術領域】 尤指一種可降低共模雜 本發明係有關一種馬達系統 訊及達成安全停機之馬達系統。 【先前技術】 ’見f ® $胃知之馬達驅動系統的電源供應示 思圖。-父流_源40經過一個變壓器單 =直流一直流轉換部份）帽變換後，可以供應 直&電，給IGBT驅動變頻器及控制部份的電源44。 李轉^徂而°參見第一圖，為習知之馬達驅動及控制 糸过中k供安全功能操作的方塊圖。經過變壓器單元42轉 =供的直流電請供應電力到包含微控制器％、特 疋功此積體電路(ASIC)52及介面單元54之控制部份。再 =’，變壓器單元42轉換所提供的直流電壓似尚且供應 到-光麵合開關單元56及—功率單元58。該織合開關單 心可以受到㈣控制㈣之控制而關閉或是開啟在功率 M58内的閘極開關（未圖示）。再者為了安全機制，一 停機訊號64可以控制電磁„62，以切斷對於馬賴之電 力。 然而在第-及第二圖所示之電路令，具有下列問題： 由於馬達驅動電路使用單—變壓器供應給功率單元％及 ，制晶片（包含微控制器5G、ASIC 52及介面單元M之虛線 :份）輔助電源，無法有效的使得控制晶片獲取乾淨的回 饋訊號（feedbacksignal)。兩種電源（驅動電源+控制電源） 6 1355130 共用單-變壓器’其控制電源會受到 壓器耦合至控制雷谓。桅丄*雨 原雜Λ A_由支 電源繞組將共模雜訊耦合 至控制電源繞組會造成控制板雜訊甚大。 再者，目刖使用於輸出（U，V，W)的電磁開關（未 包含在功率單元58内）相當笨重且有壽命問題，二 心停機訊號64須經由電磁開關62才能切斷對於馬達⑻之 電力’達成安全需求’然而造成電路複雜 【發明内容】 项 發明之-目的即在於提供—種可降低共模雜訊 及達成女全停機之馬達系統。 為達成上述目的，本發明提供一種可降低共模雜訊之 ’、、、達系統。該馬達系統包含一交流(AC)電源、一第一變壓 器單元、及一第二變壓器單元，該第一變壓器單元及一第 二變燃器單元均連接到該AC電源並可以提供直流電壓。 該第一變塵器單元及一第二變壓器單元之直流電壓分別供 應馬達系統之控制部份及驅動部份，因此可減少驅動部份 的共模雜訊經由變壓器繞組耦合至控制電源繞組。再者一 停機訊號可以經由一光耦合器或是一繼電器而關閉一脈寬 調變積體電路，以達成安全停機需求。 【實施方式】 參見第三圖，為依據本發明之可降低共模雜訊之馬達 電源裝置方塊圖。該可降低共模雜訊之馬達電源裝置主要 包含一交流（AC)電源1〇，與該交流（AC)電源1〇連接之第一 變壓器單元12及第二變壓器單元14，—IGBT驅動電源16連 7 1355130 接至該第-變壓器單元12、及—控制電源18連接至該第二 變壓器單元14。上述電路構成本發明之馬達電源裝置，且 驅動電源與控制電源各自使用獨立的變壓器即可避免驅動 線ίί生的雜訊轉合至控制電源。在此電路中，該第一變 壓盗單7L 12及第二變壓器單元14内可以包含整流部份（未 圖不），以在改變電壓值後亦可提供直流電壓。 ^參見第四圖，為依據本發明之可降低共模雜訊之馬達 籲系、統方塊圖。由第二變壓器單元14供應之第二直流電壓 18Α係供應到控制部份（包含虛線所包圍之微控制器2〇、 特定功能積體電路（ASIC)22及介面單元24)。由第一變壓 益單tg12提供之第一直流電壓16A則供應到一功率單元 28、一光编合開關單元26及一閘極驅動單元32。 在第四圖所示之電路中，由於第二變壓器單元14供應 之直流電壓18A係供應到控制部份，而第一變壓器單元12 提供之第一直流電壓16A則供應到驅動部份；因此可減少 鲁驅動電路部份的共模雜訊經由變壓器繞組耦合至控制電源 繞組。使用兩絚變壓器的架構可以得到乾淨直流控制電源 使得控制的電流回路及通訊的品質都得到大幅的改善。 再者參見第五圖A及第四圖，依據本發明，一安全停 機訊號（safe stop)34可以經由一光耦合器322而使一電源脈 寬調變積體電路（PWMIQ320 (位在第一直流電壓1从的 產生電路之内）之震盪訊號輸入埠320A接地，因此可以停 止供應閘極驅動早元32的電源’而完全使功率單元％内的 六橋絕緣柵極電晶體（IGBT)關閉，而達成以簡易電路安 8 1355.130 全停機之要求。 再者參見第五圖B，該安全停機訊號（safe stop)也可以 經由一繼電器324而使一 PWM積體電路（PWMIC)320 (位在第一直流電壓16A的產生電路之内）之震盪訊號輪 入埠320A接地’同樣可以停止供應閘極驅動單元32的電 源’而完全使功率單元28内的六橋絕緣栅極電晶體 (IGBT )關閉。 本發明之優點可以綜合如下： 1. 乾淨的電流回饋訊號 2. 乾淨的位置訊號（編碼器） 3. 低通訊雜訊 4.低價安全停機（SAFE STOP) 、综上所述，當知本發明已具有產業利用性、新穎性與 進步性’又本發明之構造亦未曾見於_產品及公開使 用合發明專利申請要件，爰依專利法提出申請。 【圖式簡單說明】 知之馬達驅動系統的電源供應示意圖。 第：=馬達驅動及控制系統之方塊圖。 置方塊圖。 爹低/、拉雜讯之馬達電源裝 統方 第四圖為依據本發明 塊圖。 之可降低共模# m之馬達系 米立國a為實現安全停機 笼X闽η、 1丁機之—電路圖。 圖為貫現安全停機t # 戌又另—電路圖 9 ^55.130 【主要元件符號說明】 【習知】1355, 130 IX. Description of the invention: [Technical field to which the invention pertains] In particular, a method for reducing common mode hybrids relates to a motor system and a motor system for achieving a safe shutdown. [Prior Art] See the power supply diagram of the motor drive system of the f ® $ stomach. - The parent stream _ source 40 passes through a transformer single = DC direct current conversion part). After the cap is changed, the direct & electric power can be supplied to the IGBT to drive the inverter and the control part of the power supply 44. Li turn ^徂 and ° See the first figure, which is a block diagram of the conventional motor drive and control for the safety function operation. After the transformer unit 42 turns the supplied DC power, please supply power to the control part including the microcontroller %, the integrated circuit (ASIC) 52 and the interface unit 54. Further, the transformer unit 42 converts the supplied DC voltage and supplies it to the --surface switching unit 56 and the power unit 58. The weaving switch can be turned off or turned on by a (4) control (4) to turn on the gate switch (not shown) in the power M58. In addition, for the safety mechanism, a stop signal 64 can control the electromagnetic „62 to cut off the power for the Ma Lai. However, the circuit diagrams shown in the first and second figures have the following problems: Since the motor drive circuit uses a single— The transformer is supplied to the power unit %, and the auxiliary power supply for the chip (including the dotted line of the microcontroller 5G, the ASIC 52 and the interface unit M) is not effective, so that the control chip can obtain a clean feedback signal. Drive power + control power supply 6 1355130 shared single-transformer 'its control power will be coupled to the control thunder by the voltage regulator. 桅丄 * rain source miscellaneous A_ coupled by the power supply winding common mode noise to the control power winding The control board has a lot of noise. Moreover, the electromagnetic switch (not included in the power unit 58) used for output (U, V, W) is quite cumbersome and has a life problem. The two-heart stop signal 64 must pass through the electromagnetic switch. 62 can cut off the power demand for the motor (8), but the circuit is complicated. [Inventive content] The purpose of the invention is to provide a kind of In order to achieve the above object, the present invention provides a system for reducing common mode noise, which includes an alternating current (AC) power supply and a first transformer. a unit and a second transformer unit, the first transformer unit and a second variable burner unit are both connected to the AC power source and can provide a DC voltage. The DC voltage of the first dust collector unit and a second transformer unit The control part and the driving part of the motor system are separately supplied, so that the common mode noise of the driving part can be reduced to be coupled to the control power winding via the transformer winding. Further, the stop signal can be turned off via an optical coupler or a relay. A pulse width modulation integrated circuit to achieve a safe shutdown requirement. [Embodiment] Referring to the third figure, a block diagram of a motor power supply device capable of reducing common mode noise according to the present invention can reduce common mode noise. The motor power supply device mainly comprises an alternating current (AC) power source 1 , and the first transformer unit 12 and the second transformer unit 14 connected to the alternating current (AC) power source 1 , -I The GBT driving power supply 16 is connected to the first transformer unit 12, and the control power source 18 is connected to the second transformer unit 14. The above circuit constitutes the motor power supply device of the present invention, and the driving power source and the control power source are each independently used. The transformer can avoid the noise transmission of the driving line ίί to the control power supply. In this circuit, the first transformer singular 7L 12 and the second transformer unit 14 can include a rectifying portion (not shown) to The DC voltage can also be supplied after changing the voltage value. ^ See the fourth figure, which is a schematic diagram of the motor system for reducing common mode noise according to the present invention. The second DC voltage supplied by the second transformer unit 14 is 18Α. It is supplied to the control section (including the microcontroller 2〇, the specific function integrated circuit (ASIC) 22 and the interface unit 24) surrounded by the dotted line. The first DC voltage 16A provided by the first transformer www.tg12 is supplied to a power unit 28, an optical switch unit 26 and a gate drive unit 32. In the circuit shown in the fourth figure, since the DC voltage 18A supplied from the second transformer unit 14 is supplied to the control portion, the first DC voltage 16A supplied from the first transformer unit 12 is supplied to the driving portion; The common mode noise that reduces the portion of the Lu drive circuit is coupled to the control power winding via the transformer winding. The use of a two-turn transformer architecture results in a clean DC control power supply that greatly improves the quality of the controlled current loop and communication. Referring to FIG. 5A and FIG. 4, in accordance with the present invention, a safety stop 34 can be used to make a power supply pulse width modulation integrated circuit (PWMIQ320 (in the first place) via an optical coupler 322. The DC signal 1 is generated from the oscillating signal input 埠320A of the circuit, so that the supply of the gate drive early 32 can be stopped, and the six-bridge insulated gate transistor (IGBT) in the power unit% is completely turned off. And achieve the requirement of full shutdown of the simple circuit 8 1355.130. Referring to Figure 5B, the safety stop can also be a PWM integrated circuit (PWMIC) 320 via a relay 324. The oscillating signal wheel in the first DC voltage 16A generating circuit) is grounded 'the same as the power supply to the gate driving unit 32' and the six-bridge insulated gate transistor (IGBT) in the power unit 28 is completely enabled. The advantages of the present invention can be summarized as follows: 1. Clean current feedback signal 2. Clean position signal (encoder) 3. Low communication noise 4. Low-cost safety shutdown (SAFE STOP), in summary, when The invention has industrial applicability, novelty and progressiveness. Moreover, the structure of the invention has not been seen in the product and the public use of the invention patent application requirements, and the application is filed according to the patent law. [Simple description of the figure] Known motor drive system Schematic diagram of the power supply. Section: = block diagram of the motor drive and control system. Block diagram. The fourth diagram of the motor power supply unit for low/low noise is the block diagram according to the invention. The motor is made by Mi Liguo, a circuit diagram for safely stopping the cage X闽η, 1丁机. The picture shows the safety shutdown of the t # 戌又又—— Circuit diagram 9 ^55.130 [Main component symbol description] [Practice]
交流（AC)電源40 變壓器單元42 IGBT驅動變頻器及控制部份電源44 直流電壓44A 微控制器50 特定功能積體電路（ASIC)52 介面單元54 光耦合開關單元56 功率單元58 馬達60 電磁開關62 停機訊號64 【本發明】 交流（AC)電源1〇 第一變壓器單元12 第二變壓器單元14 IGBT驅動電源16 控制電源18 第一直流電壓16A 第一直流電壓18A 微控制器20 • 特定功能積體電路（ASIC) 22 介面單元24 光耦合開關單元26 功率單元28 閘極驅動單元32 脈寬調變積體電路（PWM 1C) 320AC (AC) power supply 40 Transformer unit 42 IGBT drive frequency converter and control part power supply 44 DC voltage 44A Microcontroller 50 Specific function integrated circuit (ASIC) 52 Interface unit 54 Optical coupling switch unit 56 Power unit 58 Motor 60 Electromagnetic switch 62 Shutdown signal 64 [Invention] AC (AC) power supply 1〇 First transformer unit 12 Second transformer unit 14 IGBT drive power supply 16 Control power supply 18 First DC voltage 16A First DC voltage 18A Microcontroller 20 • Specific function product Body Circuit (ASIC) 22 Interface Unit 24 Optically Coupled Switch Unit 26 Power Unit 28 Gate Drive Unit 32 Pulse Width Modulation Integrated Circuit (PWM 1C) 320
‘震盪訊號輸入埠320A 光耦合器322 繼電器324 文全停機訊號（safe stop) 34‘Concussion signal input 埠320A Optocoupler 322 Relay 324 Full stop signal (safe stop) 34