| 摘要 |
When firing or ignition transformers are utilized in the firing or ignition circuit of an electronic commutator such as, for example, that utilized in the Siemotron drive, there is no ignition or firing pulse at the thyristors during the start of the motor due to the signal provided by the rotor position sensor. In order to insure a reliable start of the motor, additional firing pulses are periodically applied to the firing circuit. Upon the attainment of a specific speed, the additional pulses are automatically discontinued. |
