The emphasis of this paper is the commutation control of sensorless BLDC motor, which is used to drive Photovoltaic Pumps.
本文所研究的重点是无位置传感器直流无刷电机的换向控制，电机驱动的对象为光伏水泵系统。
It also includes, Hall element inputs, a sequencer for commutation control, fixed off time pulse width modulation (PWM) current control and locked rotor protection.
它还包括霍尔元件输入、整流控制定序器、固定停机时间脉冲宽度调制(PWM)电流控制以及锁定转子保护。
For Brushless DC (BLDC) servo control, optional 3 phase commutation tracks replace the traditional Hall Effect sensors.
无刷直流(BLDC)伺服控制，可选的3相换轨取代传统的霍尔效应传感器。
The inverter uses opetimal phase angle control scheme to suppress the surge voltage during the commutation of current.
为了抑制电流换相期间的浪涌电压，逆变器采用最佳相角控制。
Make use of the OPC can carry out the data commutation of manage the system and the control system very expediently, making develop two times to become very easy.
利用OPC可以很方便地实现管理系统与控制系统的数据交换，使二次开发变得很容易。
Space vector pulse width modulation(SVPWM) and multi-step commutation method of bi-directional switches are the basic control strategies of the matrix converter.
空间矢量脉宽调制和双向开关多步换流方式是矩阵式变换器的基本控制策略。
The new voltage control topology is presented, as well as the commutation logic for the thyristor bypass switch is provided.
介绍了新型电压控制拓扑、晶闸管旁路开关的交换逻辑。
In allusion to the key problem on the control of BLDCM, the thesis discuss some methods about control of it in aspects of commutation of motor, closed-loop control and the disturbance restraint.
论文针对无刷直流电动机无传感器控制中存在的问题，分别从电机的换相、闭环控制和抗干扰等方面来探讨永磁无刷直流电动机的无传感器控制。
Four PWM modes used in the brushless DC motor control system are introduced and their different influences on the commutation torque ripple of BLDC motors are analyzed in detail.
介绍了无刷直流电机控制系统中的四种PWM调制方式，详细分析了四种不同的调制方式对无刷直流电机换相转矩脉动的影响。
This thesis discusses principal issues of the matrix converter such as prime principle, control strategy, current commutation, its applications etc.
本文立论研究的目的是对矩阵式变换器基本原理、控制策略、开关换流、应用范围等基本性问题进行探索性研究工作。
A strategy controlling winding commutation directly to control motor is proposed with respect to the principle of machine.
分析了稀土永磁无刷直流电机原理特性，提出了一种通过直接控制绕组换向时间进而控制电机转速的方法。
The exact rotor position is required while a permanent magnet brushless servo motor (PMBSM) is under commutation and control. Howere, position sensors have some fatal defects.
永磁无刷伺服电机的换相和控制都需要准确的转子位置信息，然而位置传感器有其难以克服的缺点。
Inside installed selector switch, can be used in the circuit below60A as power lead-in switch, and the switch cab control motorstart, change speed, stop, and commutation.
内装转换开关，用于电流60A以下的电气线路中，作为电源引入开关，并可控制电动机起动变速停止换向等。
A commutation current prediction control scheme was proposed in brushless DC motor (BLDCM) to suppress the commutation torque ripples.
分析了永磁无刷直流电机换相原理，提出了一种换相电流预测控制方法以抑制换相转矩脉动。
Besides, only six Hall-effect latches, half of which were backups, were used to control commutation and measure the speed with improved M/T algorithm.
对普通的M/T测速算法进行了改进，并仅以两组相互备份的六个位置传感器完成了数字转速测量和换相控制。
The exact rotor position is required while a brushless DC motor (BLDCM) is under commutation and control. Howere, posi2 tion sensors have some fatal defects.
无刷直流电机的换相和控制都需要准确的转子位置信息，然而安装转子位置传感器有其难以克服的缺点。
These control ICs greatly simplify the system design and lower system cost by integrating the commutation logic on-board, which lessons the burden on the system microprocessor.
上述两种控制IC集成了整流逻辑，减少了系统微处理器的负载，从而大大简化了系统设计，降低了系统成本。
Direct Torque Control (DTC) has the advantages of less reference frame commutation-computation and less influence by motor parameter variations in AC drives system.
交流调速中直接转矩控制具有坐标变换运算量小和受电机参数变化影响小的特点。
The PSR Digital Control System, used for control of the commutation equipment in an aluminum electrolysis plant, is described in the paper.
介绍一种用于铝电解整流设备过程控制的数字控制系统（ PSR）。
Using the motor control special chip ML4428, the counter electromotive force detection and back-EMF commutation were realized.
所设计的无刷直流电机稳速控制系统用电机控制专用芯片ML4428实现了反电势的检测、换相和功率驱动；
Brushless DC motor (BLDC) with permanent magnet excitation, in which electrical commutation is used instead of mechanical, has the same good characteristics of speed control as traditional DC motor.
无刷直流电动机利用电子换相代替机械换相，不但具有直流电动机的调速性能，而且体积小效率高，在许多领域已得到了广泛应用。
Brushless DC motor (BLDC) with permanent magnet excitation, in which electrical commutation is used instead of mechanical, has the same good characteristics of speed control as traditional DC motor.
无刷直流电动机利用电子换相代替机械换相，不但具有直流电动机的调速性能，而且体积小效率高，在许多领域已得到了广泛应用。
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