采煤機(jī)外文翻譯---電牽引采煤機(jī)的開關(guān)磁阻電動機(jī)-展示頁
2024-12-17 17:06本頁面
【正文】 speed control of the double Switched Reluctance motors parallel drive system could be implemented by PI algorithm. In the Switched Reluctance motor 1, the triggered signals of the main switches in the power converter are modulated by PWM signal, the parison of the given rotor speed and the practical rotor speed are made and the duty ratio of PWM signal are regulated as follows, where, is the given rotor speed, is the practical rotor speed, is the difference of the rotor speed, is the increment of the duty ratio of PWM signal of the Switched Reluctance motor 1 at k time, is the integral coefficient, is the proportion coefficient, ek is the difference of the rotor speed at k time, ek1 is the difference of the rotor speed at k1 time, D1(k) is the duty ratio of PWM signal of the Switched Reluctance motor 1 at k time, and D1(k1) is the duty ratio of PWM signal of the Switched Reluctance motor 1 at k1 time. The output power of the Switched Reluctance motor drive system is approximately in proportion to the average DC supplied current of the power converter as follows, where, P2 is the output power of the Switched Reluctance motor drive system, Iin is the average DC supplied current of the power converter. In the Switched Reluctance motor 2, the triggered signals of the main switches in the power converter are also modulated by PWM signal. The balancing the distribution of the loads between the two Switched Reluctance motors could be implemented by fuzzy logic algorithm. In the fuzzy logic regulator, there are two input control parameters, one is the deviation of the average DC supplied current of the power converter between the two Switched Reluctance motors, and the other is the variation of the deviation of the average DC supplied current of the power converter between the two Switched Reluctance motors. The output control parameter is the increment of the duty ratio of the PWM signal of the Switched Reluctance motor 2. The block diagram of the double Switched Reluctance motors parallel drive system for the electrical traction in shearer was shown in Figure 3. Figure 3. Block diagram of the double Switched Reluctance motors parallel drive system for the electrical traction in shearer The deviation of the average DC supplied current of the power converter between the two Switched Reluctance motors at the moment of ti is where, Iin1 is the practical average DC supplied current of the power converter in the Switched Reluctance motor 1 at the moment of ti, Iin2 is the practical average DC supplied current of the power converter in the Switched Reluctance motor 2 at the moment of ti. The variation of the deviation of the average DC supplied current of the power converter between the two Switched Reluctance motors at the moment of ti is where, ei1 is the deviation of the average DC supplied current of the power converter between the two Switched Reluctance motors at the moment of ti1. The duty ratio of the PWM signal of the Switched Reluctance motor 2 at the moment of ti is where, ΔD2(i) is the increment of the duty ratio of the PWM signal of the Switched Reluctance motor 2 at the moment of ti and D2(i1) is the duty ratio of the PWM
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鄂ICP備17016276號-1