起动电压

A bus bar voltage dip during motor starting, shall not exceed 10%.

电动机起动时的母线电压降不得超过10%。

This series of generating set is an perfect combination of our newly-developed TFDW4 single-phase brushless synchronons generator and Such outatanding gasoline engines as YAMAHA made in Japan, which appears small in size, light in weight, easy to start, low in fuel conswmption and noise production with a stable voltage and frequency output.

本系列发电机组，是我公司新一代TFDW4单相无刷发电机与日本雅马哈等名牌发动机完美的结合，稳定的电压和频率输出及体积小、重量轻、起动方便、油耗低、噪音低等特点，充分地体现了高性能、高质量发电机组所应具备的要素，是银行、小型餐厅、娱乐场所、家庭及牧场的理想电源。

ABSTRACT Aiming at problems of trans-vector controller in a vehicle-carried induction motor such as variable rotor and stator resistance following motor temperature, and their inductance varying with flux saturation degrees. Firstly, CSI and VSI are introduced, for CSI, it can hold the advantages both FOC and DTC using stator flux directional, PI parameter and simulation are also introduced. Secondly, equations of IM in the synchronous rotary frame and its static counterpart, as figuring in the saturation condition of magnetic field, are dealt in this paper and the simulation results are presented. Thereafter, the parameter designing of PI trans-vector controller is processed, which features the non-linear model. In practical realization, as neglecting the dynamical change of motor inductance, this paper employs online modification of inductance parameters, according to the flux saturation, then transforms the non-linear equations into linear ones, and so compacts the structure of controller. Thirdly, in view of the maximum torque output is extraordinary requisite when Electrical Vehicle start up, accelerate, and overtake, this paper issues the maximum torque when both inverter and battery capacity is corporeally definite. Fourthly, on-line differentiating and analyzing both rotor's time constants and its flux by using the expanding order reduction and discrete Kalman filter equation are fathomed, in order to realize high-performance trans-vector algorithm, and also the simulation results are presented. Fifthly, the close-loop regenerative brake system, when the EV's torque is set constant, is deduced; at the same time, unification of electric drive model and brake model is executed. Combined with maximum charge current demands, the mathematical model for online yielding torque as a demand.

本论文针对车载异步电机在矢量控制器所遇到的问题：定转子电阻随温度变化及随电机饱和程度变化的转子电感及定子电感而影响电机调速性能提出一套完整的解决方案：分析了电流型逆变器和电压型逆变器在实现矢量控制时控制器参数的计算，分析出对于电流型逆变器在采用定子磁场定向时，其性能同时具有矢量控制和直接转矩控制两者的优势，并对电压型逆变器在转子磁场定向下的模型进行了仿真研究；建立异步电机非线性模型，推导出考虑磁饱和时异步电机在同步旋转坐标系及静止坐标系下的方程，并做出了仿真结果，建立异步电机在非线性模型下的矢量控制调节器的PI参数设计，在实际应用中，若忽略电机电感的动态变化，可以根据当前的磁路饱和状态而在线修正电感参数，从而将非线性方程线性化，降低控制器的复杂度；考虑到电动汽车在起动和加速超车时需要电机有最大转矩输出，本文讨论在逆变器容量一定和电池供电能力有限的情况下电机最大转矩输出问题；推导了异步电机扩展降阶、离散卡尔曼滤波方程在线辨识转子时间常数和转子磁通，用于实现高性能的矢量控制算法，并给出了仿真结果；推导出了电动汽车恒转矩给定的闭环回馈制动系统，实现了电动控制模型和制动模型的统一，而且结合铅酸电池最大充电电流的要求，为制动转矩在线给定建立了数学模型；设计了基于双DSP系统的高性能矢量控制器软硬件框图，并以大量实验数据说明矢量控制在电动汽车应用的实际应用状况。

The main production of Self-healing low voltage shunt capacitor, AC motor soft starter intelligent, reactive power compensation controller, TBB series of low-voltage shunt capacitor devices, CBB60, CBB61, CBB65, CD60 series AC motor capacitors, metal pulse capacitor, magnetizing plane capacitor, ultraviolet lamp capacitor, split-phase shunt capacitor compensation, and other various low-voltage electrical products.

主要生产自愈式低电压并联电容器、交流电机智能软起动器，无功功率补偿控制器，TBB系列低压并联电容器装置、CBB60，CBB61，CBB65，CD60系列交流电动机电容器、金属化脉冲电容器、充磁机电容器、紫外线灯电容器、分相补偿并联电容器以及其它各种低电压电器产品。

It was got that parameters influencing on current and the relationship between current peak value and slope control time in starting process by slope voltage, and the definition of motor starting efficiency was proposed.

通过分析得到采用斜坡电压控制策略时影响起动电流的参数和电流峰值与斜坡控制时间的关系，同时提出了电动机的起动效率概念。

Also included is a discussion of reduced voltage motor starting techniques and useful references to world voltage standards, formulae, codes and standards and a glossary of terms.

其中还包括讨论降低电压电动机起动技术和有用的参考材料，为世界的电压标准，公式，法规和标准和术语表。

All Whirlpool window ACs come with a low voltage start up feature, which means that the compressor starts at low voltage levels, which eliminates the need for a stabilizer during voltage fluctuations.

所有旋涡窗口ACs来与低压开始特点，因此意味着压缩机起动在低电压电平，在电压波动期间，消灭需要对于安定器。

The following functions can be realized: Measuerment:the effective values of three phase current and voltage, power frequency, active power, reactive power, power factor etc. Motor control: direct starting, converse starting, star and triangle starting, self-starting. Protection:thermal overload protection, current leakage protection, open-phase protection, three-phase unbalance protection, over voltage protection, loss voltage protection, low load protection and fault warning and fault dates memory. Communication: communication of the computer in control room and the microcomputer monitor in the spots is realized by the interface of RS-485. The motor is not only controlled in the spots but also in control room. The dates, information and some functions are shared by the spots and control room too.

该电动机监控器以80C196KC单片机为核心，通过采样三相电流﹑电压信号来实现以下功能：三相电流﹑电压有效值，电网频率，有功功率，无功功率及功率因数等的测量；对电动机实现直接、正反转、星三角及自起动控制；对电动机实现热过载、漏电、断相、三相不平衡、过压、欠压及轻载保护，对故障进行报警及数据记忆；通过RS-485串行接口与中央控制室计算机实现通信功能，对电动机既可本地，也可远程控制；实现控制现场与控制室之间数据、信息、功能共享。

At last, the multi-slice model for the representation of skew is built, which can directly calculate the starting current and starting torque of energy-saving motor according to terminal voltage, the reliability of this method is verified by comparing the values between calculation and test.

最后论文建立了考虑转子斜槽结构的多截面有限元模型，以端电压为输入量，可直接计算出节能电机的起动电流和起动转矩，计算结果与实测数据的比较验证了该方法的可靠性。

When the system starts, the speed outer ring saturats non-functional, the current inner ring plays a major role to regulate the starting current to maintain the maximum so that the speed linear change, to reach a given value; when it operates steadily, the speed negative feedback from the outer ring plays a major role ,to let the speed changes with the given speed voltage , at the same time the current inner ring regulates the armature current of motor adjustment to balance the load current.

该系统起动时，转速外环饱和不起作用，电流内环起主要作用，调节起动电流保持最大值，使转速线性变化，迅速达到给定值；稳态运行时，转速负反馈外环起主要作用，使转速随转速给定电压的变化而变化，电流内环跟随转速外环调节电机的电枢电流以平衡负载电流。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。