Direct current (DC) deicing control system, a DC deicing system and an aircraft including a DC deicing system
A direct current (DC) deicing control system including a direct current (DC) power source, and a periodic deicing waveform generator electrically connected to the DC power source. The periodic deicing waveform generator outputs a switched DC voltage having a periodic electrical current waveform including periods of zero voltage and periods of non-zero voltage. The periods of zero voltage define arc extinguishing events reducing arc formation in the DC deicing control system.
1. A direct current (DC) deicing control system comprising:
a direct current (DC) power source; and
a periodic deicing waveform generator electrically connected to the DC power source, the periodic deicing waveform generator outputting a switched DC voltage having a periodic electrical current waveform including periods of zero voltage and periods of non-zero voltage, the periods of zero voltage defining arc extinguishing events reducing arc formation in the DC deicing control system.
2. The DC deicing control system according to claim 1 , wherein the DC deicing waveform generator comprises a polyphase periodic deicing waveform generator configured and disposed to deliver a plurality of circuit phases to at least one deicing mat, each of the plurality of circuit phases including a periodic electrical current waveform having periods of zero voltage and periods of non-zero voltage.
3. The DC deicing control system according to claim 2 , wherein the periodic deicing waveform generator comprises a polyphase, phase shifting periodic deicing waveform generator configured and disposed to deliver a plurality of circuit phases to at least one deicing mat, each of the plurality of circuit phases including a periodic electrical current waveform having periods of zero voltage and periods of non-zero voltage, the periods of zero voltage for each of the plurality of circuit phases being off-set relative to the periods of zero voltage for others of the plurality of circuit phases.
4. The DC deicing control system according to claim 3 , wherein the periodic deicing waveform generator comprises a polyphase, phase shaped periodic deicing waveform generator configured and disposed to deliver a plurality of circuit phases to at least one deicing mat, each of the plurality of circuit phases including a periodic electrical current waveform having periods of zero voltage and periods of non-zero voltage, each of the periods of zero voltage including a curvilinear profile.
5. The DC deicing controller according to claim 4 , wherein the periodic deicing waveform generator comprises a polyphase, phase shaped periodic deicing waveform generator configured and disposed to deliver a plurality of circuit phases to at least one deicing mat, each of the plurality of circuit phases including a periodic electrical current waveform having periods of zero voltage and periods of non-zero voltage, each of the periods of non-zero voltage including a curvilinear profile.
6. A direct current (DC) deicing system comprising:
at least one deicing mat; and
a direct current (DC) deicing control system operably coupled to the deicing mat, the DC deicing control system including a DC power source, and a periodic deicing waveform generator, the periodic deicing waveform generator outputting a switched DC voltage having a periodic electrical current waveform to the at least one deicing mat, the periodic electrical current waveform including periods of zero voltage and periods of non-zero voltage, the periods of zero voltage defining arc extinguishing events reducing arc formation in the DC deicing control system.
7. The DC deicing system according to claim 6 , wherein the periodic deicing waveform generator comprises a polyphase periodic deicing waveform generator delivering a plurality of circuit phases to the at least one deicing mat, each of the plurality of circuit phases including a periodic electrical current waveform having periods of zero voltage and periods of non-zero voltage.
8. The DC deicing system according to claim 7 , wherein the periodic deicing waveform generator comprises a polyphase, phase shifting periodic deicing waveform generator delivering a plurality of circuit phases to the at least one deicing mat, each of the plurality of circuit phases including a periodic electrical current waveform having periods of zero voltage and periods of non-zero voltage, the periods of zero voltage for each of the plurality of circuit phases being off-set relative to the periods of zero voltage for others of the plurality of circuit phases.
9. The DC deicing system according to claim 8 , wherein the periodic deicing waveform generator comprises a polyphase, phase shaped periodic deicing waveform generator delivering a plurality of circuit phases to the at least one deicing mat, each of the plurality of circuit phases including a periodic electrical current waveform having periods of zero voltage and periods of non-zero voltage, each of the periods of zero voltage including a curvilinear profile.
10. The DC deicing system according to claim 9 , wherein the periodic deicing waveform generator comprises a polyphase, phase shaped periodic deicing waveform generator delivering a plurality of circuit phases to the at least one deicing mat, each of the plurality of circuit phases including a periodic electrical current waveform having periods of zero voltage and periods of non-zero voltage, each of the periods of non-zero voltage including a curvilinear profile.