【摘要】：隨著全球環(huán)境污染、資源枯竭等問(wèn)題的加劇,用新能源汽車代替內(nèi)燃機(jī)汽車成為了一種解決方案。我國(guó)是最大的汽車生產(chǎn)與消費(fèi)國(guó),對(duì)電動(dòng)汽車相關(guān)技術(shù)的研究和產(chǎn)業(yè)推廣成為汽車工業(yè)競(jìng)爭(zhēng)的焦點(diǎn)。本文設(shè)計(jì)了一種基于子電機(jī)的新型結(jié)構(gòu)多冗余直驅(qū)輪轂式永磁無(wú)刷電機(jī),研究了該種電機(jī)的電磁設(shè)計(jì)及容錯(cuò)驅(qū)動(dòng)控制策略。本文分為電機(jī)設(shè)計(jì)和電機(jī)控制系統(tǒng)建模分析與實(shí)驗(yàn)驗(yàn)證兩部分。本文設(shè)計(jì)了一種基于子電機(jī)的新型結(jié)構(gòu)直驅(qū)輪轂式永磁同步電機(jī),該電機(jī)的定子利用特殊的繞組布置構(gòu)成四套三相繞組,共用同一個(gè)轉(zhuǎn)子,在氣隙圓周上構(gòu)成四個(gè)子電機(jī),控制系統(tǒng)可實(shí)現(xiàn)對(duì)各子電機(jī)的獨(dú)立控制。本文首先設(shè)計(jì)了分別適用于高速恒速和低速起動(dòng)的兩種工作模式下的容錯(cuò)電機(jī)電磁方案,通過(guò)優(yōu)化調(diào)整參數(shù),設(shè)計(jì)了同時(shí)適應(yīng)兩種工作模式的異型混合容錯(cuò)電機(jī),建立了基于Ansoft和Matlab的仿真模型,仿真研究了該異型混合電機(jī)的磁場(chǎng)分布及在低速和高速區(qū)域的穩(wěn)態(tài)運(yùn)行性能。仿真結(jié)果表明,低速和高速工作區(qū)域均具有較高的運(yùn)行效率,并具有良好的容錯(cuò)性能。此外,本文基于一臺(tái)包含四個(gè)子電機(jī)的方波驅(qū)動(dòng)永磁無(wú)刷電機(jī)樣機(jī),仿真了電機(jī)在正常運(yùn)行條件下及幾種故障模式下的運(yùn)行性能,提出了基于電流補(bǔ)償?shù)墓收显\斷及容錯(cuò)控制方案,搭建了以dsPIC為控制芯片雙閉環(huán)控制系統(tǒng)硬件平臺(tái),實(shí)測(cè)了電機(jī)在正常情況下的負(fù)載運(yùn)行性能,以及控制系統(tǒng)在故障條件下的電流檢測(cè)及補(bǔ)償功能。實(shí)驗(yàn)結(jié)果表明,本文提出的基于子電機(jī)的多冗余電機(jī)結(jié)構(gòu)具有良好的容錯(cuò)性能。
[Abstract]:With the increase of global environmental pollution and resource depletion, it has become a solution to replace internal combustion engine cars with new energy vehicles. China is the largest country in automobile production and consumption. The research and promotion of electric vehicle related technology have become the focus of automobile industry competition. In this paper, a new type of permanent magnet brushless motor with multi-redundant direct-drive wheel hub based on sub-motor is designed, and its electromagnetic design and fault-tolerant drive control strategy are studied. This paper is divided into two parts: motor design and motor control system modeling analysis and experimental verification. In this paper, a new type of direct-drive hub permanent magnet synchronous motor based on sub-motor is designed. The stator of the motor uses special winding arrangement to form four sets of three-phase windings, sharing the same rotor, and forming four sub-motors on the circumference of air gap. The control system can realize the independent control of each submotor. In this paper, an electromagnetic scheme of fault-tolerant motor is designed, which is suitable for high speed, constant speed and low speed starting respectively. By optimizing the parameters, a hybrid fault-tolerant motor is designed, which adapts to two working modes at the same time. The simulation model based on Ansoft and Matlab is established. The magnetic field distribution and steady operation performance in low and high speed region of the hybrid motor are simulated. The simulation results show that both the low speed and high speed working areas have high running efficiency and good fault-tolerant performance. In addition, based on a square wave driven permanent magnet brushless motor prototype with four submotors, the performance of the motor under normal operation conditions and several fault modes is simulated. A fault diagnosis and fault-tolerant control scheme based on current compensation is proposed. The hardware platform of double closed loop control system based on dsPIC is built, and the load performance of motor under normal condition is measured. And the current detection and compensation function of the control system under the fault condition. The experimental results show that the proposed multi-redundant motor structure based on submotor has good fault-tolerant performance.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM341;U469.72

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