1. A master power supply for an illumination system, comprising:
a resonant inverter constructed and arranged to generate a high-frequency and low-voltage electrical output;
an AC current source including an inductor, said electrical output of said resonant inverter being magnetically coupled and provided to said AC current source;
a transformer including a primary side and a secondary side, said primary side being connected to said current source and
a current carrying loop connected to said secondary side and being arranged to provide power in a contactless way by inductive coupling to an illumination module including several light emitting diodes (LEDs).
2. The master power supply of claim 1 further including a power factor corrector.
3. The master power supply of claim 1 further including a pulse width modulation line regulator.
4. The master power supply of claim 1 further including a loop current sensor and an open circuit voltage sensor.
5. The master power supply of claim 1 further including a microcontroller for controlling a loop current and max power.
6. The master power supply of claim 3, wherein said pulse width modulation line regulator includes a buck converter.
7. The master power supply of claim 1 wherein said illumination module includes said LEDs used for building or pathway lighting purposes.
8. The master power supply of claim 1 wherein said illumination module includes said LEDs located inside a letter channel for lighting purposes.
9. The master power supply of claim 1, wherein said resonant inverter includes two transistors connected back to back in a push-pull arrangement.
10. A master power supply for an illumination system, comprising:
a resonant inverter having a resonant circuit topology and being constructed and arranged to generate a high-frequency and low-voltage electrical output;
an AC current source including an inductor connected to receive said electrical output;
a transformer including a primary side and a secondary side, said primary side being connected to said current source and said secondary side including a current limiter; and
a current carrying loop connected to said secondary side and being arranged to provide power in a contactless way by inductive coupling to an illumination module including several light emitting diodes (LEDs).
11. The master power supply of claim 10 further including a power factor corrector.
12. The master power supply of claim 10 further including a pulse width modulation line regulator.
13. The master power supply of claim 10 further including a loop current sensor and an open circuit voltage sensor.
14. The master power supply of claim 10 further including a microcontroller for controlling a loop current and max power.
15. The master power supply of claim 11, wherein said power factor corrector includes a switch coupled to an inductor and a diode to provide boost voltage output.
16. The master power supply of claim 15, wherein said power factor corrector includes said switch coupled in a feedback arrangement to an output voltage regulator.
17. The master power supply of claim 16, wherein said feedback arrangement includes a voltage feedback loop.
18. The master power supply of claim 16, wherein said feedback arrangement includes a current feedback loop.
19. The master power supply of claim 10, wherein said resonant inverter includes a half bridge converter.
20. The master power supply of claim 19, wherein said half bridge converter includes a driver providing signals to semiconductor switches operating with a resonant circuit.
21. The master power supply of claim 20, wherein said half bridge converter includes said current limiter.
22. The master power supply of claim 20, wherein said half bridge converter includes an open circuit limiter.
23. The master power supply of claim 10, wherein said resonant inverter includes a self oscillating sinusoidal resonant circuit topology.
24. The master power supply of claim 23, wherein said resonant inverter includes two transistors connected back to back in a push-pull arrangement.
25. The master power supply of claim 12, wherein said pulse width modulation line regulator includes a buck converter.
26. The master power supply of claim 14, wherein said microcontroller receives a signal from a loop current sensor associated with said primary side.
27. The master power supply of claim 14, wherein said microcontroller receives a signal from an open circuit voltage sensor associated with said primary side.
28. The master power supply of claim 10 wherein said illumination module includes said LEDs used for building or pathway lighting purposes.
29. The master power supply of claim 10 wherein said illumination module includes said LEDs located inside a letter channel for lighting purposes.
30. The master power supply of claim 10, wherein said resonant inverter provides said output in the range of about 20 kHz to about 40 kHz.
31. A master power supply for an illumination system, comprising:
a resonant inverter having a resonant circuit topology and being constructed and arranged to generate a high-frequency and low-voltage electrical output;
an AC current source including an inductor connected to receive said high-frequency and low-voltage electrical output;
a transformer including a primary side and a secondary side, said primary side being connected to said current source;
a loop current sensor associated with said primary side;
an open circuit voltage sensor associated with said primary side; and
a current carrying loop connected to said secondary side and being arranged to provide power in a contactless way by inductive coupling to an illumination module.
32. The master power supply of claim 31 further including a pulse width modulation line regulator.
33. The master power supply of claim 32, wherein said pulse width modulation line regulator includes a buck converter.
34. The master power supply of claim 32, wherein said pulse width modulation line regulator is controlled by a microcontroller in a feedback arrangement.
35. The master power supply of claim 31, wherein said loop current sensor and said open circuit voltage sensor provide signals to a microcontroller.
36. The master power supply of claim 31, wherein said resonant inverter includes two transistors connected back to back in a push-pull arrangement.
37. The master power supply of claim 31, wherein said resonant inverter provides said output in the range of about 20 kHz to about 40 kHz.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. An apparatus for controlling cooling of a gantry having a linear motor comprising:
a stator provided with a first temperature sensor, having a heat sink and a cooling fan at predetermined portions of an X-axis and an Y-axis linear motors;
a mover provided with a second temperature sensor, having a heat sink installed on the upper surface of an X-axis and a Y-axis linear motors;
an encoder for sensing a position and velocity of the mover;
an encoder periphery sensor part for measuring surroundings (a temperature, a humidity and a pressure) of the encoder;
an AD converter for receiving a first and a second temperature signals and converting them from an analog signal to a digital signal and outputting the same;
a controller for controlling a drive signal outputted from a mover driver unit to control the velocity of the Y-axis linear motor and the X-axis linear motor;
a DV converter for converting digital signals, that is, a cooling fan control signal and an air valve control signal to a plurality of drive signals, that is, analog signals; and
a mover driver for providing the drive signal to a coil block.
2. The apparatus according to claim 1, wherein the encoder includes an indication member for indicating a position information of a mover and an optical sensor for reading the position information of the mover as indicated at the indication member.
3. The apparatus according to claim 1, wherein the mover includes an air nozzle installed at a predetermined distance and connected with the air valve to cool the mover at one side thereof.
4. A method for controlling cooling of a gantry comprising the steps of:
operating at least one mover;
measuring temperatures of an X-axis and a Y-axis stators (Txs, Tys) by means of temperature sensors;
measuring temperatures of an X-axis and a Y-axis movers (Txm, Tym) by means of temperature sensors;
storing the measured temperature (Txs, Tys, Txm and Tym) on the stators and movers and comparing them with the pre-set temperature, that is, the comparative value;
storing the temperature information (Txs, Tys, Txm and Tym), comparing them with the comparative value of the pre-set temperature, and computing a difference between them in case that the temperatures (Txs, Tys, Txm and Tym) are greater than the pre-set comparative value;
computing a temperature gain corresponding to the computed temperature difference; and
driving a first and a second cooling fans 14a and 14b and an air valve 33 as long as the temperature gain, to perform cooling.
5. A method for controlling cooling of a gantry comprising the steps of:
operating a mover;
measuring a position and a velocity of an encoder;
measuring peripheral environment (temperature, humidity and pressure;
measuring temperatures of an X-axis and a Y-axis stators (Txs, Tys) and temperature of X-axis and a Y-axis movers (Txm, Tym);
storing the measured the values of the temperature information (Txs, Tys, Tsm, Tym) and comparing them with a pre-set comparative value;
computing a temperature difference in case that the measured values of the temperature information (Txs, Tys, Tsm, Tym) are greater than the comparative value;
computing a temperature gain;
driving a first and a second cooling fans and an air valve;
comparing again the values of the temperature information (Txs, Tys, Tsm, Tym) and the comparative value, after cooling; and
correcting the movement command to the movers in case that the values of the temperature information (Txs, Tys, Tsm, Tym) are greater than the comparative value.
6. The method according to claim 5, wherein, in the step of comparing again the values of the temperature information (Txs, Tys, Tsm, Tym) and the comparative value, in case that the values of the temperature information (Txs, Tys, Tsm, Tym) are smaller than the comparative value upon comparing, it returns to the step for measuring a position and a velocity of an encoder