發(fā)布時間：2018-05-22 17:55

  本文選題：高壓變頻器 + 矢量控制��； 參考：《哈爾濱理工大學》2014年碩士論文

【摘要】：隨科技的不斷發(fā)展，高壓大容量電動機得到了廣泛應用，從而高壓變頻器獲得了廣闊的發(fā)展空間。在高電壓等級下選取合適的開關器件異常關鍵。IGBT在很多方面具有明顯優(yōu)勢，但在大容量變頻器中，時下單只IGBT的電壓和電流等級還達不到要求，因此單元級聯(lián)高壓變頻器和基于IGBT串聯(lián)高壓變頻器分別在不同場合得到了廣泛應用。利用矢量控制系統(tǒng)控制高壓變頻器響應速度更高，可使高壓變頻器更快速、精確的工作，轉矩響應比較好，高壓變頻器矢量控制技術以及功率單元IGBT串聯(lián)的均壓技術是當今電力電子領域研究的熱點。 本文對當前各種IGBT串聯(lián)有源均壓策略進行比較分析，具體研究了IGBT柵極側阻容二極管有源串聯(lián)均壓策略，并對其進行了仿真分析。然后在研究了高壓變頻器矢量控制策略的基礎之上，，建立了數(shù)學模型，并對電壓空間矢量調制技術（SVPWM）進行了較深入的研究。在此基礎上，搭建了Matlab仿真模型，對矢量控制策略進行了仿真分析。在可行性分析之后，把矢量控制確定為高壓變頻器的控制方式。 最后論文以PIC18F2331為核心控制芯片，采用矢量控制策略，搭建了一臺功率為2kW的實驗樣機，功率部分采用IGBT柵極側有源均壓的方式。驅動模塊采用2SD315A，驅動供電系統(tǒng)為低壓取能中的電磁送能方式。2kW的實驗樣機的測試結果表明，該系統(tǒng)矢量控制的控制精度高，功率模塊串聯(lián)IGBT均壓特性良好，此實驗樣機達到預計要求。
[Abstract]:With the continuous development of science and technology, high-voltage large-capacity motor has been widely used, thus the high-voltage frequency converter has a broad development space. Selecting appropriate switch device abnormal key under high voltage level. IGBT has obvious advantages in many aspects, but in large capacity inverter, the voltage and current level of single IGBT is not up to the requirement. Therefore, cascaded unit high-voltage inverter and series-based IGBT-based high-voltage converter are widely used in different occasions. Using vector control system to control high voltage inverter response speed is higher, can make high voltage frequency converter faster, accurate work, torque response is better, The vector control technology of high voltage inverter and the voltage sharing technology of power unit IGBT in series are the hot spots in the field of power electronics. In this paper, the current IGBT series active voltage equalizing strategies are compared and analyzed, and the active voltage equalizing strategies of IGBT gate side resistive diodes are studied in detail, and the simulation analysis is carried out. Then, based on the research of vector control strategy of high voltage inverter, the mathematical model is established, and the voltage space vector modulation (SVPWM) technology is studied deeply. On this basis, the simulation model of Matlab is built, and the vector control strategy is simulated and analyzed. After feasibility analysis, vector control is determined as the control mode of high voltage inverter. Finally, using PIC18F2331 as the core control chip and vector control strategy, an experimental prototype with power of 2kW is built. The power part adopts the IGBT gate side active voltage sharing mode. The test results show that the vector control accuracy of the system is high, and the power module in series IGBT has good voltage-sharing characteristics, and the driving module adopts 2SD315A, and the driving power supply system is the electromagnetic energy transmission mode in low voltage. The test results show that the control accuracy of the vector control system is high, and the power module in series IGBT has good voltage sharing characteristics. The experimental prototype meets the expected requirements.
【學位授予單位】：哈爾濱理工大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM921.51

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