Eddy current retarder with variable magnetic circuit and control method

• Main Authors: WANG FEI, BAI YUBIN, GUO WENGUANG, ZHAO SHANGZHI
• Format: Patent
• Language: Chinese; English
• Published: 29.08.2023
• Subjects: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

The invention relates to an eddy current retarder with a variable magnetic circuit, which comprises a retarder and a battery, and is characterized in that the retarder comprises a stator, a rotor and excitation coils, two rows of stator salient poles are uniformly arranged side by side in the circumferential direction of the stator, and one excitation coil is wound on each stator salient pole; the positive electrode of the battery is connected with the coils on the left side stator salient pole and the right side stator salient pole through five normally open contacts of the electric control unit, and the magnet exciting coils on the left side stator salient pole and the magnet exciting coils on the right side stator salient pole are sequentially and alternately connected in series in sequence. The two rows of magnet exciting coils generate a circumferential NS alternating magnetic field; when the rotating speed is higher than the set speed, the two rows of magnet exciting coils generate a closed magnetic fie