Li Jianglin Xuzhou Tuzhaicheng Electric Power Co., Ltd., Xuzhou 22221, Jiangsu, China Abstract 1 The use of simulation tools to do the 1 can solve the best control of the switch reluctance speed regulation motor simulation speed control motor, keyword switch resistance motor; Simulation; control strategy classification number 352 literature identification code. 4 Article number, 33200002 0 Overview Switched reluctance motor is called a new type of stepless speed regulation system which is developed by combination of power electronic technology wringing technology and computer technology traditional reluctance motor. The Khan-Sectionary Reluctance motors are structurally sturdy and easy to manufacture and maintain. They have good system control performance. The quadrant control is flexible. The advantage of the switched reluctance motor is that it can maintain high efficiency over a wide operating range. Its operating performance and economic indicators are lower than those of conventional KRM motors. The AC speed control motor system is good, even better than the thyristor DC motor system, with great application prospects. At present, it is mainly used in power textiles. 1. The dangerous places in coal mines and other industries are similar to mountains in development time. Switched reluctance speed-regulating motor dynamic model reluctance speed-regulating motor can be safely and economically transported in the speed control system. It needs to delay the dynamic process of the system. For accurate simulation.
151 simulation tools Because the switched reluctance motor is a highly nonlinear system, in order to obtain more accurate simulation results, a very complicated simulation program needs to be prepared, coupled with more controllable parameters of the switched reluctance motor, All of these have brought difficulty to the simulation of a switched reluctance motor. The use of juice off the muscle tone of the motor linear motor dynamics of the small model pharynx, but the simulation is very square but he. Actually, there is a large error in the switch reluctance motor of transport hall. Therefore, the establishment of a more accurate and practical dynamic model of the switched reluctance motor, and the use of practical simulation language has become particularly important. The interactive input simulation tool 3 is now a good solution to the difficulty of the simulation of the switched reluctance motor in order to accurately input the noisy model of the juice control system to the counting machine. In the 1990s, the software company developed. An input and simulation tool provides two new significant features. 51 Simulation and connection to continents You can use the mouse to draw the desired functions on the model window for direct simulation or analysis of the system.
The 3 melon anti-system model includes the following sub-module library 8, the sister input source 8 output mode discrete time model 131 linear links such as 631 non-linear links. 0 Connections and Connections If you want to create a control system structure, you can open the module library and call the modules in the module library directly or construct a module with new functions. After the system is modeled, the control parameters can be selected for simulation.
7 functions are compiled under the window to make a complex model. This makes the model of Khan-Reluctance Speed ​​Regulating Motor can be established more accurately. The mathematical model structure and dynamic simulation model of the switched reluctance speed-regulating motor under different control modes are established by using functions such as function books and model packaging. You can analyze. And took a good effect, 2 switching reluctance speed control motor control strategy reluctance motor speed control motor control parameters, easy control, can be run in quadrant, and each step can be controlled to change the working status, in the quasi-quadrant The performance is basically the same and is an inherent feature of this type of motor. Adjusting the voltage to recognize the opening angle 1 and turning off the angle 0 can both control the torque, and then adjust the switched reluctance motor to go wrong. Switching magnetic motor and most transmissions like, the minimum angular velocity of the maximum electromagnetic power that can be obtained from the stationary to the base-speed motor has what torque characteristics å« contrary to the output above, what is the special switch magnetic motor? Special executives often need to study the following control strategies.
2.1 Current chopping control When the switched reluctance motor operates in a speed range lower than the base speed, the maximum value of the maximum capacity of the magnetic flux limit is not exceeded. The applied voltage and opening angle should be adjusted to shut off. Angle 0, this controllable amount. To obtain a constant speed characteristic within a range of 0 angular speeds, it is possible to fix 9., 19.. The applied voltage is controlled by chopping, and the specific method of controlling the size is to adopt a limited current to control the application of the on-phase phase. The effective, inter. In order to realize the limitation on the maximum value of the magnetic flux of the rabbit 133 and the maximum current, a constant torque characteristic is obtained. Changing the magnitude of the current limiting amplitude, that is, the control of the output torque can be controlled. The method is the current chopping control (1) to control the square shape.
Normally, the formula 12 can be tuned to a magnetic torque formula, which can be seen from the formula 1 and 7, which are related to the change of the opening angle of the main switching device, ie, the change of the opening angle of the main switching device.
2.3 Voltage Control Change the effective value of the applied voltage by changing the effective time width of the phase winding conduction, thus changing the torque, that is, the voltage, 1 control the phase current waveform of the corresponding 3.
Under the pressure control, type 1 can be simplified as follows. When 7 is constant, the motor is in direct proportion to the phase-to-phase electrical card. Therefore, the difference between the speed setting value and the actual speed is used to adjust the value of the voltage applied to the conducting winding, which in turn changes the speed of the switched reluctance motor.
Voltage chopper control is the use of voltage 1 control technology to implement a chopper on the DC voltage source, adjust the power supply 4 voltage to achieve off, resistance motor system card speed control, 2.4 variable angle voltage control voltage control mode speed range comparison Narrow, the angle position control is combined with the voltage control. Each speed segment has a value of 9.,1. In each speed segment, the speed regulation is still controlled by a voltage. This type is the variable angle control method. In different, degrees, variable pressure control is still constant torque speed, system.
2.5 Angle Position Control and Current Chop Control Coordination This speed regulation method is Tunliu chopper control. The combination of angular position control. At low speed, the phase winding current has a large value, so it is necessary to record the limit. Through the given allowable current upper limit amplitude, 〃 and 1 limit adjustment, change the output torque to achieve constant torque control, when the switched reluctance motor is running in the high speed range, due to a larger rotating electromotive force, a device is turned on , the shorter, so the current. At this time, the constant power output characteristic is obtained by adjusting the conduction angle=wide speed range.
The above control methods include control 1 and voltage change, stomach control mode used in low speed and medium speed range, angular position control mode suitable for speed adjustment of high speed operation of switched reluctance motors, and current chopping control mode suitable for switching magnetics. Resistor motor running at low speed. Therefore, regardless of the reluctance motor reluctance brakes move. The angle ugly control method needs to be used in conjunction with the Tunliu chopper control method. Under normal conditions, when the motor is started, when the motor speed is equal to 500, the motor operates in the current chopping control mode. When it is equal to or equal to 5, it is switched to the angular position controller. When the motor speed is decelerated by the degree, the current is switched to +5001. Brake or deceleration in wave control mode. Whether it is the start or the deceleration, the switched reluctance motor can be operated on any desired mechanical characteristic by the combination of the current chopping control mode and the angular position control mode. In the practical application of specific applications, the above control methods can be comprehensively applied to achieve the optimal control of the switched reluctance motor.
Beijing Mechanical Industry Press. 5.
2 Shi Yang, et al. 1 language essentials and dynamic simulation tools, elbow. Xi'an Northwestern Polytechnical University Press. 1997.
3 Chen Hao. Wait. Phase-switched reluctance motor, control strategy study small throw motor. 1995.2268.
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