Bias alert device for voltage type thyristor motor
专利汇可以提供Bias alert device for voltage type thyristor motor专利检索，专利查询，专利分析的服务。并且PURPOSE:To prevent a ripple from affecting a disturbance for a current control system by a method wherein using a counter-electromotive force bias signal of a motor and a riqid bias signal as a bias alerting signal, the counter-electromotive force bias is applied solely on swithing. CONSTITUTION:When a motor 13 is controlled by thyristor converters 25, 26, a current command and a feedback signal are compared, a code conversion of its deviation is performed by operational amplifiers OA1-3 after its passing through a delay circuit 20, and a control is performed through forward side and backward side automatic pulse phase shifters 21, 22. In addition to a constant application of a rigid bias to phase shifters 21, 22 by resistors R9, R10, VR1 is this circuit, the counter-electromotive bias signal is applied on phase shifters 21, 22 solely on a switching duration between a reverse converter and a forward converter by providing a contact CH1 which turns on during the switching duration. Consequently an effect falling on a current control system by a ripple in the counter-electromotive bias signal can be prevented, and a stable bias alerting can be possible.，下面是Bias alert device for voltage type thyristor motor专利的具体信息内容。
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