| 发明名称 | Comminuting device including a rotary current asynchronous motor and a non-positive traction drive and method for its operation | ||
| 摘要 | A comminuting rotor is driven by a rotary current electric motor via a non-positive traction drive, wherein said rotary current electric motor is energized by a controlled frequency converter for operating the comminuting rotor at a predetermined rotational speed during the normal operating phase. A degree of slip of the traction drive is determined and monitored and the rotary current electric motor is controlled for being powered off if a first slip threshold value is exceeded. If a predetermined second threshold of the traction drive slip is exceeded, which is below said first slip threshold, for continuing the operation of the comminuting device, the frequency converter is controlled in a slip operating phase for a closed or open loop control of the traction drive slip to a predetermined third slip threshold value and for reducing the torque output from the rotary current electric motor. | ||
| 申请公布号 | US9233376(B2) | 申请公布日期 | 2016.01.12 |
| 申请号 | US201414186623 | 申请日期 | 2014.02.21 |
| 申请人 | VECOPLAN AG | 发明人 | Lipowski Wolfgang |
| 分类号 | B02C25/00;B02C18/24;B02C18/00;H01J9/52;H02P27/06 | 主分类号 | B02C25/00 |
| 代理机构 | Alston & Bird LLP | 代理人 | Alston & Bird LLP |
| 主权项 | 1. A method for operating a comminuting device, in which method a comminuting rotor is driven by a driving unit which comprises at least a rotary current electric motor, via a non-positive traction drive, wherein said electric motor is energized by a controlled frequency converter, for operating said comminuting rotor at a predetermined rotational speed (ω0) during a normal operating phase, and wherein a degree of slip (S) of the traction drive is determined and monitored and the rotary current electric motor is controlled for being powered off if a first slip threshold value (S1) of the traction drive slip is exceeded, wherein if a predetermined second threshold (S2) of the traction drive slip is exceeded, which is below said first slip threshold (S1), said frequency converter is controlled in a slip operating phase for closed or open loop control of the traction drive slip (S) to a predetermined third slip threshold value (S3) and for reducing the torque (ME) output from the rotary current electric motor. | ||
| 地址 | Bad Marienberg DE | ||