Solar circulation pump and method for controlling a solar...

Details Solar circulation pump and method for controlling a solar... Solar circulation pump and method for controlling a solar...

2007-03-22

2009-11-17

Masih, Karen (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Brushless motor closed-loop control

C318S400220, C318S400010

Reexamination Certificate

active

07619382

ABSTRACT:
To provide a solar circulation pump for connection to a photovoltaic panel device, comprising an electric motor which is electronically commutated and has a control device for supplying a periodic commutation signal, it is proposed that the control device be so configured that the commutation signal is varied with respect to the ratio of switch-on time to switch-off time.

REFERENCES:
patent: 4614879 (1986-09-01), Ault
patent: 5487593 (1996-01-01), Potts et al.
patent: 6140797 (2000-10-01), Dunn
patent: 2007/0038534 (2007-02-01), Canter

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