The new proportional solenoid eliminates the zero dead - zone , and has advantages of high level of linearity , low hysteresis and low energy consumption 该双向比例电磁铁能够有效消除零位死区，并具有良好的线性度、较小的滞环和较低的功耗。
The typical control methods for apf such as triangular wave modulate , hysteresis control and timing control , etc , these methods all have some demerits 而有源电力滤波器常用的控制方法为三角波调制、滞环控制和定时控制等常规的pwm控制法，这些方法均存在一定的不足。
The control way of hysteresis - current with good track performance for current is adopted and on the basis of matlab / simulink environment the simulation model of the rectifier is built up 采用电流跟踪性好的滞环电流控制方法，建立了基于matlab / simulink环境下的仿真模型。
A 6kw svm - based hysteresis current controlled three - phase full - bridge prototype circuit with the proposed controller has been built , and experimental results are also shown 在完成的6kw电流滞环控制空间矢量调制( hcc - svm )的三相全桥逆变器中验证了其效果，给出了试验结果。
In chapter two , the system structure and working principle of apf are introduced also the affection on compensation precision when main parameters of apf vary are studied 并对有源电力滤波器的主要参数如交流侧滤波电感值、直流侧电容电压及滞环宽度对补偿精度的影响进行了分析。
A hysteresis - band instantaneous current control pwm technique is popularly used because of its simplicity of implementation , fast current control response , and inherent peak current 1 imiting capability 瞬时电流滞环控制技术由于实现简单、响应速度快和具有自然限流等优点而得到广泛应用。
The theory analyzes is verified by simuliation results . then , the control of voltage space vector method is explored based on instantaneous reactive power and ac motor drive theory 其次，论文对滞环电流控制方法进行了分析，指出了滞环电流控制所存在的缺点以及局限性，仿真验证了理论分析结果。
On the basis of improving conventional switch table of direct torque control system , a two - hysterics control switch table is established in the strategy in order to decrease torque ripple 该方法在对传统直接转矩控制的开关控制表进行改进的基础上，建立了新型双层滞环控制的开关控制表，使感应电动机的转矩脉动达到最小。
In chapter four , the thesis discusses the advantage of the proposed control strategy , and the feasibility of which is proved by the simulation under the high - power condition . in addition , a system design is introduced 第四章讨论了基于电压矢量的滞环控制的优点，进行了初步的系统设计，仿真结果验证了功率大的情况下方案的可行性。
In the process of close - loop vector - control system , the author designed a model of current delay - loop pwm vector - control wvf system which includes speed and magnetic double close - loops and rea lized it in simulink 在闭环控制系统的仿真中，设计了一个速度、磁链闭环的电流滞环型pwm变频调速系统，并且使这个闭环系统在simulink中加以实现。
