Solar circulation pump and method for controlling a solar circulation pump, for controlling the starting of and for setting the performance of a solar circulation pump
First Claim
Patent Images
1. Solar circulation pump for connection to a photovoltaic panel device, comprising:
- an electric motor which is electronically commutated and which has a control device for supplying a periodic commutation signal and a rotor rotatable about an axis of rotation; and
a measuring device for determining a rotational speed of the rotor or a magnitude that characterizes the rotational speed;
wherein;
the control device is so configured that the commutation signal is varied with respect to a ratio of switch-on time to switch-off time;
the control device comprises a control circuit in which the rotational speed of the rotor of the electric motor is a controlled magnitude, and the ratio of switch-on time and switch-off time in the commutation signal is a control quantity, anda control aim for the controlled magnitude is maximization of the rotational speed.
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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.
5 Citations
26 Claims
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1. Solar circulation pump for connection to a photovoltaic panel device, comprising:
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an electric motor which is electronically commutated and which has a control device for supplying a periodic commutation signal and a rotor rotatable about an axis of rotation; and a measuring device for determining a rotational speed of the rotor or a magnitude that characterizes the rotational speed; wherein; the control device is so configured that the commutation signal is varied with respect to a ratio of switch-on time to switch-off time; the control device comprises a control circuit in which the rotational speed of the rotor of the electric motor is a controlled magnitude, and the ratio of switch-on time and switch-off time in the commutation signal is a control quantity, and a control aim for the controlled magnitude is maximization of the rotational speed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. Solar circulation pump for connection to a photovoltaic panel device, comprising:
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an electric motor which is electronically commutated and has a control device for supplying a periodic commutation signal; and a buffer store for storing electrical energy for at least one of aligning a rotor of the electric motor and starting the electric motor; wherein the control device checks whether sufficient electrical energy is available from the buffer store for the at least one of aligning and subsequently starting the rotor of the electric motor and does not initiate starting of the electric motor in the event that insufficient electrical energy is detected.
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Specification