| 9899831 |
Method and device to protect an ESP power supply from transient over-voltages on the power grid |
Per Ranstad |
2018-02-20 |
| 9543855 |
Voltage source converter (VSC) with neutral-point-clamped (NPC) topology and method for operating such voltage source converter |
Thiago Batista Soeiro, Johann Kolar, Per Ranstad |
2017-01-10 |
| 9331561 |
Method to minimize input current harmonics of power systems such as ESP power systems |
Johann Kolar, Thiago Batista Soeiro, Jürgen Biela, Per Ranstad |
2016-05-03 |
| 9325300 |
Method for the operation of electrostatic precipitators |
Per Ranstad, Jürgen Biela, Thiago Batista Soeiro |
2016-04-26 |
| 9132434 |
Method to control the line distoration of a system of power supplies of electrostatic precipitators |
Per Ranstad |
2015-09-15 |
| 8570776 |
Method and device for determining a control scheme for an active power filter |
Johann Kolar, Thiago Batista Soeiro, Per Ranstad |
2013-10-29 |
