MDP90A-0250-503-4-000变频器可议价
MDP90A-0250-503-4-000变频器可议价
MDP90A-0250-503-4-000变频器可议价
MDP90A-0250-503-4-000变频器手册
MDP90A-0250-503-4-000变频器说明书
MDP90A-0250-503-4-000逆变器
MDP90A-0250-503-4-000同整流器相反,逆变器是将直流功率变换为所要求频率的交流功率,以所确定的时间使6个开关器件导通、关断就可以得到3相交流输出。以电压型pwm逆变器为例示出开关时间和电压波形。
MDP90A-0250-503-4-000控制电路是给异步电动机供电(电压、频率可调)的主电路提供控制信号的回路,它有频率、电压的“运算电路”,主电路的“电压、电流检测电路”,电动机的“速度检测电路”,将运算电路的控制信号进行放大的“驱动电路”,以及逆变器和电动机的“保护电路”组成。
MDP90A-0250-503-4-000运算电路:将外部的速度、转矩等指令同检测电路的电流、电压信号进行比较运算,决定逆变器的输出电压、频率。
MDP90A-0250-503-4-000电压、电流检测电路:与主回路电位隔离检测电压、电流等。
MDP90A-0250-503-4-000驱动电路:驱动主电路器件的电路。它与控制电路隔离使主电路器件导通、关断。
MDP90A-0250-503-4-000速度检测电路:以装在异步电动机轴机上的速度检测器(tg、plg等)的信号为速度信号,送入运算回路,根据指令和运算可使电动机按指令速度运转。
MDP90A-0250-503-4-000保护电路:检测主电路的电压、电流等,当发生过载或过电压等异常时,为了防止逆变器和异步电动机损坏。
D1751S24B8CP329 10
855-0301/0150-0501
855-2701/0035-0001
750-375
750-494
750-600
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