EC motor assembly
Assigneeebm-papst Mulfingen GmbH & Co. KG
InventorDaniel König
Life of this patent
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Abstract
The present invention relates to an EC motor assembly (1) having an electronically commutated, permanent magnet-excited DC motor (M) with an upstream commutation electronic unit (2) that is supplied with a DC link voltage (UZK) via a DC link (8). The DC link (8) can be connected directly to a solar cell generator (12) via a first voltage input (10) on one hand, and on the other, to a grid voltage (UM) via a controllable power supply unit (14) and a second voltage input (16). The DC link voltage (UZK) is variably specified based on a respective available photovoltaic voltage (UPV) of the solar cell generator (12). The power supply unit (14) can be regulated with respect to the output voltage thereof to adapt to the respective DC link voltage (UZK).
Claims6
An EC motor assembly (1), comprising an electronically commutated, permanent magnet-excited DC motor (M) with an upstream commutation electronic unit (2) that is supplied with a DC link voltage (UZK) via a DC link (8), wherein the DC link (8) can be connected directly to a solar cell generator (12) via a first voltage input (10) and via a controllable power supply (14) and a second voltage input (16) to a grid voltage (UM), the DC link voltage (UZK) being variably based on a respective photovoltaic voltage (UPV) available from the solar cell generator (12), and the output voltage of the power supply (14) being regulated via an MPP regulator (18) to draw as much power as possible from the solar cell generator (12) by specifying a motor operating point (AP) with a rotational speed target value (nsoll) and during variations of photovoltaic parameters, being adapted via the commutation electronic unit (2) in such a manner that the motor rotational speed is maintained near the target value (nsoll).
Dependencies are inferred from the claim text.