ripple voltage 中文意思是什麼
ripple voltage
解釋
波紋電壓-
For the bldcm which has a pseudo - sinusoidal back - emf waveform, this dissertation presents a svpwm control method using six discrete position signals for minimizing the torque ripple. the main aspects for the implementation of this method are analyzed, including the initial orientation of the voltage vector, reasonable choice of the impedance angle and the advance commutation angle, and estimation of the successive rotor positions
針對反電動勢類似正弦的準正弦波反電動勢無刷直流電動機，本文提出一種基於六個離散位置信號的自同步svpwm （電壓空間矢量法）控制方法，用以削弱電磁轉矩脈動，分析了實現這種方法的主要控制環節，包括起動時電壓空間矢量的初始定位，阻抗角與電流超前角的合理選擇以及連續轉子位置的估計等。 -
High ripple current, low level of esr and impedance, high voltage current, tol
高漣波電流，低esr與阻抗，高電壓電流， -
Chaotic switching modulations introduce low - frequency harmonic spectrum of output voltage as random switching modulation. in some case, low - frequency noise ripple offset the effect chaotic switching modulations reduce the level of emi. it indicates that the ccfmfd integrates the advantages of spreading harmonic power at the multiples of the switching frequency and not introducing significant noise ripple at low - frequency range. among all chaotic switching modulations, the ccfmfd is considered as the best choice in applying to dc / dc converter
與隨機調制模式相同，混沌開關調制模式也引入輸出低頻噪聲紋波，有些情況下低頻噪聲紋波可能抵消混沌開關調制降低emi水平的效果。分析表明： ccfmfd模式具有較好的降低emi水平和引入較小低頻紋波的優點，可以作為混沌調制模式較佳的選擇。 -
Firstly, the whole scheme of the transducer is designed, the transducer includes capacitance / voltage converting, ripple - control capacitor switching, magnify - multiple switching, a / d converting, singlechip, photoelectric isolation and rs - 485 serial communication, etc. the measurement of microcapacitor is the key technology of transducer
首先對變送器部分進行了整體的方案設計，變送器由電容/電壓轉換、紋波控制電容切換、放大倍數切換、 a / d轉換、單片機、光電隔離和rs485串口通訊等幾部分組成。 -
The typical performance characteristics include : line and load transient response, efficiency, output voltage ripple, quiescent current, maximum load current, output voltage temperature characteristics and the short
其中，整體模擬指標包括:晶元線性調整率和負載調整率、轉換效率、輸出電壓紋波、晶元靜態電流、最大負載電流、輸出電壓溫度特性及短路負載電流。 -
Superimposed ripple voltage
附加波動電流 -
With an aim at this problem, this paper suggests the modulation scheme with dc bus voltage ripple by using the front - end active power factor correct circuit based on the analysis of necessary conditions of producing acoustic resonances
針對這一現象，在分析產生聲諧振的必要條件的基礎上，重點提出了利用前級有源功率因數校正電路的直流母線脈動電壓的調制方案。 -
However, psm also have some disadvantages, for example, the output voltage ripple is large at light load and the system maybe produce radio frequency noise
但psm也具有不可避免的缺點:輕載時輸出電壓紋波較大，且易引入音頻噪聲。 -
The author of the dissertation pay a lot efforts to focus on designing the dual - loop control circuit based on optimized psm, include : 1 ). researched the relationship of input and output voltage and output valtage ripple, when psm operate in continuous current mode and discontinuous current mode respectively. what we have done will direct psm apply to converter
本文在psm調制理論的基礎上，設計基於優化psm調制模式的雙環控制電路，主要包括以下幾個方面內容: 1 ）對psm調制模式分別在連續和斷續工作模式下的輸入輸出電壓關系以及輸出電壓紋波進行研究，以期指導psm調制模式在變換器中的應用。 -
In the parafeed circuit, the power supply ripple forms a voltage divider across the choke, and is not coupled to the output
在旁饋耦合中，電源漣波被扼流圈分壓，而不再耦合進輸出。 -
Thirdly, current ripple will be calculated in two current control mode respectively and paper will make a conclusion about its interaction with the voltage, current, frequence and so on. finally this paper will show the design of the controller and test waveforms
另外，本文分析了在兩種電流控制方式下，即pwm控制和滯環控制下電流脈動和相繞組電壓、相電流、轉速和開關頻率的關系。 -
Using the modified method, 6 kinds of tl topologies of single - switch converter are obtained. the deep research reveals that these tl topologies can have less value of the inductor by using interleaving modulation strategy compared with conventional modulation strategy on the condition that the current ripple of the inductor are the same. some drawbacks such as high voltage stress, difficulty of realizing soft - switching, and magnetic aberration were presented in the conventional push - pull converter
對基本方法進行改進，提出了適合6種單管直流變換器的三電平拓撲變換方法，成功地得到了其三電平拓撲，開關管的電壓應力降為原來的一半；經過對這些三電平拓撲控制策略的深入研究，詳細論述了交錯開關方式可以最大幅度地減小電感的電流脈動，從而可以在電流脈動要求相同的情況下減小電感的設計值。 -
The interleaving two - transistor forward converter succeeds to the advantages of the two - transistor forward converter, it has two units working alternately, the power loss of the converter is distributed and the output voltage ripple frequency is twice of the switching frequency
交錯並聯結構式的雙管正激變換器，繼承了雙管正激變換器的優點，兩個並聯單元互補工作，分擔了功率損耗，等效占空比擴大了一倍，輸出電壓的脈動頻率變為功率管開關頻率的兩倍。 -
Because of the clamping capacitor and the interleaved structure, it has some good features compared with other flyback converters, such as : the topology is simple and can be realized easily ; the voltage spike of the power switch is availably restrained and without leakage - inductance energy loss ; the ripple of the input and output current is reduced, correspondingly, the volume and weight of the output and input filter is also significantly reduced
由於箝位電容的加入，相對于其他類型的反激式變換器電路，該拓撲具有一些獨特的優點:電路結構簡單且易於實現;無需另加輔助開關管，實現了開關管的有源箝位，抑制了開關管的電壓尖峰;提高了輸入、輸出電流的脈動頻率，減小了輸入及輸出濾波器體積。 -
With the best modulation strategy which was found on condition that it must have largest energy transfer ratio, smallest current ripple of the inductor, and realizing zvs of each switches, the converter overcomes the drawbacks presented by the conventional zvs fb converter, such as high voltage stress of each switches, large current ripple of the inductor, and severe parasitic ringing on the rectifier diodes, so it can get higher efficiency, faster respond speed, and wider application area. the operation principle of the proposed converter is analyzed and verified by a 3kw, 50khz experimental prototype. experiments and research results show that the scheme of the tl topology derivation is reasonable, adjusted modulation strategy makes some other severe problems in conventional topologies easy to solve or makes the converter more competitive
研究結果表明，本文提出的三電平拓撲變換方案合理，針對各種三電平拓撲尋找到的控制策略可以解決變換器存在的某些問題或使變換器表現出更突出的優勢：例如針對單管直流變換器三電平拓撲的控制策略可以減小電感的設計值，針對推挽直流變換器三電平拓撲的控制策略可以實現開關管的軟開關、解決變壓器偏磁問題等，針對全橋直流變換器三電平拓撲的控制策略可以減小電感的設計值、實現開關管的軟開關等。 -
The meter adopts digital synchronous sampling and micro technology to accurately measure true rms of transformer ' s primary voltage, current, power, power factor, true rms ( ac ) or average ( dc ) of secondary voltage and current, true rms of secondary voltage ripple
該系列儀器採用數字同步采樣及微機技術，能準確測量變壓器的初級電壓、電流、功率、功率因數的真有效值，次級電壓、電流的真有效值（交流）或平均值（直流） ，次級電壓紋波的真有效值。 -
Adopting rotor field - oriented vector control methods, through which make the stator and the rotor magnetmotive forces can be kept orthogonal all along during operation of the bldcm, combining hysteresis current modulation ' s current control advantage and space voltage vector modulation ' s torque ripple attenuation advantage, then designing a sort of bldcm hysteresis current svpwm control method
摘要研究採用轉子磁場定向的矢量控制方法使無刷直流電動機定、轉子磁勢矢量始終保持正交，結合滯環調制電流控制和空間電壓矢量調制，設計了無刷直流電動機滯環電流svpwm控制方案。 -
The operating principles of svpwm and associated control algorithms are also covered in the paper. by using svpwm to control the magnitude and phase angles of the spatial voltage vector, the speed control of the drive system in this paper can reduce the output of current harmonics, lower the torque ripple, and improve the energy efficiency
本文還對svpwm的工作原理和控制演算法進行了研究，控制系統採用svpwm演算法，通過對空間電壓矢量的幅值和相位的控制來調節電機轉速，減少了逆變器輸出電流的諧波，降低了脈動轉矩，提高了電壓的利用率。 -
In order to solve the problem of direct torque control ( dtc ) for permanent magnet synchronous motor ( pmsm ) related to the flux and the torque ripple and the uncertainty of switching frequency, a method which shorten the voltage - vector - function - time by svm ( space vector modulation ) is developed, and in order to improve the system performance, the stator flux linkage sectors and vectors are subdivided
摘要為了解決永磁同步電機傳統直接轉矩控制低速時磁鏈和轉矩脈動大的問題，提出了1種用空間矢量調制（ svm ）實現減小電壓矢量在1個控制周期中的作用時間的直接轉矩控制方法;為進一步提高系統性能，對磁鏈扇區和電壓矢量進行了細分。 -
As far as the choice of the 1c is concerned, the pfc and pwm controller combo that is popular at the present time is chosen, because it can simplify designs and being synchronized trigger mode adopted, it can make peak to peak ripple voltage much small even on the condition of small capacitance
在功率因數校正晶元的選擇上，選用了國際上比較流行的pfc pwm復合晶元，這種晶元不僅可以簡化設計，而且由於採用上升沿下降沿觸發方式，在輸出濾波電容很小的情況下依然可以得到很小的電壓紋波。
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