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首页> 外文期刊>Modern Applied Science >Approaching the Ideal BLDC Motor: A Novel Electronic Speed Controller System for a Generator-Converted BLDC Motor with Field Weakening Feature
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Approaching the Ideal BLDC Motor: A Novel Electronic Speed Controller System for a Generator-Converted BLDC Motor with Field Weakening Feature

机译：接近理想的BLDC电机：一种用于发电机转换BLDC电机的新型电子速度控制器系统，具有现场弱化特征

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摘要

The concept of an ideal Brushless DC (BLDC) motor which has adjustable rotor magnetic field offers an opportunity for wider BLDC area of implementation as a very versatile electric powerhouse especially in variable load areas such as on electric vehicle or other people movers. Characterized by its high-efficiency level, low maintenance and long service duration, the lack of physical commutation brush like in regular DC motor dictates the requirement of an electronic control system to regulates its commutation. An electronic control system equipped with rotor field control capability in a collaboration with an ideal BLDC motor, is believed to offers wider implementation opportunity. Unlike a normal BLDC motor which has a standard power curved characterized with maximum power is only achievable in one specific speed, if properly controlled will have an adjustable maximum power in a wide range of rotational speed. This study proposes a novel approach to an ideal BLDC implementation through novel electronic speed controller with rotor field control in addition to normal standard motor power control. As there is no such thing as an ideal BLDC motor at the current moment, an automotive generator which has an electromagnetic rotor is converted to become a BLDC motor as an effort to approach the ideal BLDC motor concept. Field weakening, the term used for adjusting rotor magnetic field in induction motor control, is adopted as the term for adjusting the BLDC rotor field in operation. Further, a novel an electronic control system is developed which special features to also control the rotor magnetic field. The converted generator has been found to able to function like an ideal BLDC motor, by adjusting the electromagnetic rotor in its operation. It has been found to be able to provides maximum motor power within a wide range of rotational speed. Through rotor field adjustment, the converted generator provides a real-time versatile capability of allocating its power to either the high torque at low motor speed or to a very high speed at minimum torque. 39% to 81% operational efficiency levels have been achieved during the experiment, rendering the performance level of the converted generator and controller way above brushed DC motor and in par with most of standard BLDC motor. The Field Weakening control has also been found to be useable for speed control. Further, a Proportional - Integral close-loop speed regulation has also been developed for both motor and rotor control and was found to be able to works subsequently with seamless transition between each other.
机译：具有可调节转子磁场的理想无刷直流（BLDC）电机的概念为更广泛的BLDC领域提供了一个非常多功能电力所的机会，尤其是在电动车辆或其他人移动器等可变负载区域中。其特点是其高效水平，低维护和长期服务持续时间，常规直流电机中的物理换向刷缺乏物理换向刷决定了电子控制系统的要求来调节其换向。据信配备有转子场控制能力的电子控制系统，以理想的BLDC电机的合作，提供更广泛的实现机会。与具有最大功率的标准功率弯曲的正常BLDC电动机不同，只有在一个特定速度下只能实现，如果适当控制将在宽范围的转速范围内具有可调节的最大功率。本研究提出了一种通过具有转子现场控制的新型电子速度控制器的理想BLDC实现的新方法，除了正常的标准电动机功率控制之外。由于当前时刻没有理想的BLDC电动机，并且具有电磁转子的汽车发电机被转换成成为BLDC电动机，以便努力接近理想的BLDC电机概念。场弱，采用用于调节感应电动机控制中的转子磁场的术语作为调节BLDC转子场操作中的术语。此外，开发了一种新颖的电子控制系统，其特殊的特征还可以控制转子磁场。已经发现转换的发电机能够通过调节电磁转子在其操作中等理想的BLDC电机等功能。已发现能够在各种转速范围内提供最大电机功率。通过转子场调整，转换发电机提供了在低电机速度下为高扭矩或在最小扭矩下为高扭矩分配到高扭矩的实时多功能能力。在实验期间实现了39％至81％的运营效率水平，使转换发电机和控制器方式的性能水平达到拉丝直流电机的性能水平，并与大多数标准BLDC电机相同。还发现现场弱化控制可用于速度控制。此外，还为电动机和转子控制开发了比例 - 积分闭环速度调节，并且发现能够随后在彼此之间的无缝过渡之间工作。

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