About 27 results
https://drivepatents.com/patents/950043 · 15 Jul 2015
A method for discharging a DC intermediate circuit of a converter and a DC intermediate circuit (10) and a converter comprising at least one group of at least two controllable power semiconductor switches (S1, S2, S3, S4, S5, S6, S7, S8) connected in serie...
https://drivepatents.com/patents/965546 · 31 Dec 2014
An electric power source assembly for a vehicle, the power source assembly comprising a plurality of converter unit groups (GC, EC1, MC), each one of which comprises at least one converter unit, each converter unit comprising a plurality of controllable sw...
https://drivepatents.com/patents/967417 · 12 Nov 2014
A method and switching arrangement for an inverter, the inverter comprising a positive direct current pole (U DC,P ), a negative direct current pole (U DC,N ), and a neutral direct current pole (M), the arrangement comprising a first controllable switch (S...
https://drivepatents.com/patents/968401 · 22 Oct 2014
A method and an arrangement for preventing slip in a wheeled vehicle having two or more driving wheels that are operated with electric motors. The electric motor of each driving wheel of the vehicle comprises a torque limit applicable to limit torque of th...
https://drivepatents.com/patents/968354 · 22 Oct 2014
A method and an arrangement for limiting slip in a wheeled vehicle having two or more driving wheels that are operated with electric motors, the method comprising determining a speed (v1, v2, v3, v4) of each of the driving wheels, determining the highest s...
https://drivepatents.com/patents/974049 · 4 Jun 2014
A method for operating an inverter, and an inverter comprising means (DC+, DC-) for coupling the inverter (10) with a photovoltaic array (20) comprising at least one photovoltaic panel, wherein the inverter (10) further comprises means (11) configured to c...
https://drivepatents.com/patents/974364 · 28 May 2014
The present disclosure discloses a method and an apparatus implementing the method for maximising energy efficiency of an electric drive system comprising an electric motor and a load. In the method, the torque characteristics of the system can be selected...
https://drivepatents.com/patents/975766 · 23 Apr 2014
A method and an arrangement of tracking a maximum power point of a photovoltaic system, in which method an operation point of the photovoltaic system is changed based on the change of operation point and a change of power generated by the photovoltaic syst...
https://drivepatents.com/patents/975768 · 23 Apr 2014
A method of optimizing one or more starting parameters of a solar power generator system and a solar power generator system, wherein the solar power generator system comprises a solar panel array and a converter for converting power obtained from the panel...
https://drivepatents.com/patents/976062 · 16 Apr 2014
A method and an arrangement of detecting islanding operation of a distributed power generator. The method comprises determining a frequency of a grid to which the distributed power generator is connected, measuring a rate of change of the frequency of the ...