chopper circuit 中文意思是什麼
chopper circuit
解釋
斬波電路-
However, the h - bridge maglev chopper has serious switching losses, so as to have snubber circuit ; there is high emi with the chopper
然而， h -橋斬波器開關損耗大，需要添加緩沖網路，電磁干擾十分嚴重;對供電電源有反向電流沖擊，容易造成供電電源和濾波電容的損壞。 -
Firstly. operation principle of induction heating is introduced and the actuality of the power supply for induction heating is summarized. then, the scheme of structure of the power supply is established : uncontrolled rectifier and buck chopper constitute dc circuit. in this part, operation principle of a kind of soft switching buck chopper is presented mainly and the conclusion that the power semiconductor devices operate in soft switching is also illustrated by analysing the operation principle of all stages ; series resonant inverter is selected as inverter circuit via comparing the advantage and shortcoming of parallel resonant and series resonant. moreover. the work principle of series resonant inverter is analysed and the calculating method of the best dead time is put forward as well
文中首先介紹了感應加熱電源的工作原理並綜述了國內外的研究現狀。接下來分析並制定了電源主電路的構成方案：在對比幾種功率調節方式的基礎上選擇了不控整流加斬波調壓作為直流部分。在這部分里，重點研究了一種軟開關buck變換器，通過分析各階段的工作原理說明了開關器件如何工作在軟開關狀態；對于逆變器部分，在比較了串、並聯逆變器優缺點的基礎上選擇了串聯諧振逆變器，並詳細分析了串聯逆變器的工作原理，提出了最佳死區的計算方法。 -
This paper select the series - resonant inverter because it is more suited to high frequency power supply and it will be easy to enhance power capacity and enable the power supply to work on higher frequency if power is regulated in the rectifier. so uncontrolled rectifier and buck chopper constitute dc circuit is selected as rectifier circuit
並分析了感應加熱電源的各種調功方式，在對比幾種功率調節方式的基礎上，得出在整流側調功有利於高頻感應加熱電源頻率和功率的提高，選擇了不控整流加斬波器調壓作為研究對象。 -
Super chopper - stabilized amplifier icl7650 is adopted in the preamplifier circuit. double integrate a / d convertor and the a / d convertor in the cpu are adopted in the circuit
在前置放大電路中採用了自穩零運放icl7650 ， a / d轉換利用了雙積分式a / d轉換器mc14433和單片機內部的a / d轉換器。 -
An available chopper circuit of stepmotor ' s power
1種實用型步進電機功率斬波電路研究 -
Chopper synchronizing rectifier circuit
斬波同步整流電路 -
Hardware circuit adopts c8051f005 singlechip as key part, and uses integrated monolithic chip l297 and l298 to realize chopper drive of stepper motor. and achieves the control of the transfusion rate and quantum through controlling the rotate speed and number of the step motor by keyset
硬體電路採用c8051f005單片機作為控制核心，利用集成晶元l297和l298對步進電機實現斬波驅動，通過按鍵控制步進電機的轉速和轉數實現對輸液速度和輸液量控制。 -
The system is based on chopper constant current drive technique, according to the top level design idea, adopting advanced specical subdivision control integrate circuit and powerful function 80c196kc to organize the system frame, desiging the minimum system of single - chip microcomputer, multifunction i / o interface circuit, relay switch circuit, keyboard and display circuit, multifunction digital setting interface circuit and so on, utilizing the hso and hsi interface circuit which are owned by this single - chip microcomputer exclusively and its powerful command system to realize dual - degree switch control, automation orientation, automatically searching zero position, locking machine when stopping, frequency to set digitally, automatically adjusting speed through changing frequency, swithing subdivision or squarewave control, on the basis of above, the system also have the function of running according to the setting steps and the frequency, voltage and current to display through the led, etc
系統基於斬波恆流驅動技術，按照頂層設計思想，採用先進的專用細分控制電路和功能強大的80c196kc單片機來組建系統構架，設計了單片機最小系統、多功能i o介面電路、繼電器切換電路、鍵盤顯示電路和多功能數字設定介面電路等，利用該單片機獨有的hso和hsi介面及其強大的指令系統，實現了雙余度混合式步進電動機的余度切換控制、自動定位、零位自動搜索、停機鎖定、數字化頻率設定、自動調頻變速控制、細分方波切換控制，在此基礎上，該系統還設有按預置步運行、 led頻率電壓相電流顯示等功能。 -
Based on the high - low voltage electric driving unit, a new electric driving unit is built, which not only has the advantages of the high - low voltage electric driving unit but also has the advantage of obtaining high limiting current and low maintaining current easily. using self - excitation chopper circuit, the electric driving unit is good efficient, and the heat creating from the solenoid is small
在高低壓驅動電路的基礎上又設計出一種高低壓自激斬波恆流驅動電路，該驅動電路除了具有高低壓驅動電路的功能外，還具有高壓限流和低壓維持電流獲取方便、能量利用更為合理、閥發熱更少等特點。 -
（ 2 ） the major circuit has been established, composed of rectifier 、 buck - chopper 、 push - pull inverter and matching network, which realizes high - power supersonic ac output. to achieve maximal output power, the pulse frequency modulation ( pfm ) has been applied to auto - adjustment of output frequency, which corresponds to the load ' s resonant frequency
（ 2 ）建立了超聲電源主電路，其中包括：整流、直流斬波、推挽逆變器和匹配網路等部分，實現了大功率超聲頻交流電的輸出，輸出頻率的脈頻調制（ pfm ）和輸出功率的脈寬調制（ pwm ） 。 -
First, variable speed constant frequency wind energy convertion theory is described in this paper, then presents a review on the development of wind turbines control and the main types of generator and static converters used to interface variable speed wind turbines to the electric grid. then discuss main circuit constructure and advantage of direct drive wind energy conversion system and introduce pitch - control method for wind power traction and electric power stability. simply aerodynamic characteristic of the turbine is analysised and permanent magnet synchnonous generator math model is established. to convert the variable frequency electricity into utility grid, back to back four - quadrant pwm - vsi is used and three typies of control strategy is presented to capture the maximum wind energy and transmit energy. then simulation is implemented to test the control strategy. in the following chapter a simple ac - dc - ac converter with a dc - dc boosting chopper is proposed to transmit the wind energy into electricity energy and two control strategy is presented
建立了永磁電機和變流器的數學模型，針對雙pwm變頻器的特點提出了三種控制策略對變流器進行控制，通過變流器交-直-交的變換，將發電機發出的變頻變幅值交流電轉化為可用的恆定頻率的交流電，通過pwm調治能使其輸出功率因數為一，並且該控制系統功率因數為可調，能在特殊情況下同電網交換一定的無功功率，並通過對變流器的控制實現了最大風能俘獲的功能。最後採用matlab / simulink進行了模擬，取得了良好的模擬效果。在風力發電系統中，採用先進的最大功率俘獲演算法，能有效的從風中獲得最大的能量。 -
To reduce the high starting current as asynchronous motors start up directly and eliminate the negative influence that brought about by switching of contact when it starts up with reduced - voltage means, two new methods based on power electronics technology for improving the starting characteristics of three - phase induction motor are presented. one is alternative voltage regulator, the other is alternative voltage chopper. the three - phase regulating circuit - asynchronous motors system and the three phase chopper circuit - asynchronous motors system are analyzed and simulated with matlab
為解決上述問題，本文提出一種基於斬波方式的三相交流異步電動機的軟起動新方法，論文對電路的起動特性、功率因數、諧波以及控制策略進行了研究，模擬結果表明這種基於斬波方式的三相交流異步電動機的軟起動方法比基於三相交流調壓的三相交流異步電動機的軟起動方法具優越性。 -
For this reason, it ' s application will be restricted. this paper designs a circuit topology structure of multi - functional converter, which contains rectifier, chopper and inverter, it can function in soft - starting, chopping and doubly - fed adjusting speed for doubly - fed motor
本文設計了一種適用於雙饋電機多種運行狀態的多功能變流器的拓撲結構，它將整流器、斬波器與逆變器結合在一起，能完成電機的軟啟動、斬波、雙饋調速。 -
Combining the popular chopper modulate technology, the design of low offset reference circuit was put forward after in - depth analysis of the offset mechanics
深入剖析了電路的失調機理，結合目前流行的斬波調制技術，設計了低失調基準電路。 -
In the realization of the inverter control circuit, the signal from the pll is input to ir2110 via adjusting phase and forming dead time. sg3525 is selected as the core device of the chopper. meanwhile. two pulse that will input to the chopper can be obtained by simple design. besides. the circuit of which core chip is dsp is described
在逆變控制電路的具體實現中，用鎖相環作為頻率跟蹤的核心器件，經相位調整、死區形成等環節得到兩路觸發信號，輸入到ir2110中即可作為逆變器的驅動信號。 -
The air - powered machine of chopper because of having structure in brief, maintenance convenient, the cost was low and otherwise advantages to get an extensive application, but often took place breakdown on control circuit of air providing in actually running, causing the contact point of relay to glue together and burning it to bad, the air pressure getting unusually state and the like other serious obstacle
高壓斷路器氣動機構由於具有結構簡單，維護方便，成本低等優點得到了廣泛的應用，但在實際運行中常發生氣體打壓控制迴路故障，導致接觸器接點粘連燒壞，氣體壓力異常等嚴重障礙。
分享友人