Patent UA-93538-U (UA)
Title: DEVICE FOR CONTROL of TRACTION ELECTRotechnical COMPLEX
Inventor: PRYKHODKO VIKTORIA OLEKSANDRIVNA
IPC: B60L9/00
Filed: 2014-03-31
Abstract: An apparatus for control of a traction electro-technical complex comprises traction DC motor the armature winding and excitation winding of which are connected to the contact network via a separate diode, elements of a U-shaped filter and a voltage converter which is an electrical bridge with arms formed by six transistors shunted with inversed diodes to the first and second terminals of contact network. Armature winding is connected between the midpoints of two adjacent bridge arms including two transistors each, and excitation winding - between the terminals of the output diagonal of the bridge, the separate diode is connected with the reverse diode and is included via the seventh transistor between the midpoint of the first of said adjacent bridge arms and the second contact network output, equipped with two diodes. The first output of the input filter capacitor is connected to the first terminal of the contact network by means of separate diode connected with the input capacitor with the cathode. The second output of the filter inductor is connected to the first terminal of the output capacitor by means of first additional diode connected with its cathode to the output capacitor and the anode of the reverse diode connected with its cathode to the first transistor. The second additional diode is connected with its cathode to the first terminal of the output capacitor, the second terminal of which via the seventh transistor is connected to the second terminal of contact network, the anode of the second diode is connected to the midpoint of the first adjacent bridge arm. Said device is equipped with an optimal control system, which consists of a angular speed setting block, the output of which is connected to the input of differentiation unit which output is connected to the input of sign separation unit, the output of which is connected to the first input of the microcontroller. Block- master of angular velocity is connected to the input of the optimal trajectory selection unit with the output connected to the second input of the microcontroller. The third input of the microcontroller is connected to the block-master of excitation current. The first current sensor is connected to the first input of the matching unit that is with the first output connected to a fourth input of the microcontroller, the second current sensor is connected to the second input of the matching unit, this which second output is connected to the fifth input of the microcontroller, the speed sensor is connected to the third input of matching unit that with the third output is connected to the sixth input of the microcontroller, temperature sensor is connected to the fourth input of the matching unit that with fourth output is connected to the seventh input of the microcontroller, the first output of which is connected to the control electrode of the fifth transistor, the second output of the microcontroller is connected to the control electrode of the sixth transistor, the third microcontroller output is connected to the control electrode of the fourth transistor, the fourth output of the microcontroller is connected to the control electrode of the third transistor, the fifth output of the microcontroller is connected to the control electrode of the second transistor, the sixth output of microcontroller is connected to the control electrode of the first transistor, the seventh output of microcontroller is connected to the control electrode of the seventh transistor.