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Delta\'s patented AC to AC Sine Wave Converter for applications requiring clean programmable AC power.
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Energy Systemsgy y
Delta Energy SystemsAC to AC Sine Wave Converter
Energy Systemsgy y
Basic Requirements from Customers
Supply AC Load in range from 0-230Vrms (AC current!) Adjustable AC output voltage via signal interface Temperature characteristic of load is extremely non-linear (very low cold resistance)p y ( y ) no galvanic separation between input / output required Meet EN61000-3-2 (Harmonics) Meet EN61000 3 3 (Flicker) Meet EN61000-3-3 (Flicker) no hold up time High efficiency Vmains VLoad
Compact design Light weight Cost efficient design
© 11-02-08 Delta Energy Systems 2
Cost efficient design
control
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Resistance [Ohm]
Load Type: Fuser Lamp
25.00
30.00
Resistance [Ohm]Temperature Characteristic: extremely non-linear temperature
characteristic
2150W @ 230V fuser lamp
20.00
2 @ 0Vrms 24 @ 230Vrms
1R10.00
15.00
121
230
0
V
V
RR
0.00
5.00
12230VR
© 11-02-08 Delta Energy Systems 3
0V 50V 100V 150V 200V 250V
Voltage2150W @ 230V fuser lamp
Energy Systemsgy y
Basic requirements for useful solution
Features
Output voltage / current must have same form and function for resistive load like input voltage (sinusoidal)voltage (sinusoidal) no harmonics generated (EN61000-3-2)
Amplitude of output voltage / current must be regulated according control interface 0 100% continuos mode 0-100% continuos mode
Continuously flowing input / output current in all operating points, no periodic or aperiodic interrupts in static operating point no flicker generated (EN61000-3-3)
Soft transition between operating points increases load dynamic range while still meeting flicker requirements
© 11-02-08 Delta Energy Systems 4
y g g q
Energy Systemsgy y
AC/AC Converter: Line Synchronization
T4 L1
T3
VLine
Vout1
Buck ConverterPWM control T1 250kHz 1,2
© 11-02-08 Delta Energy Systems 5
Energy Systemsgy y
AC/AC Converter: Line Synchronization
VLine
Advantages: polarity detection of line voltage is very fast
7-15s after zero-crossing
T3
g
no overlapping of Gate signals for T3, T4
demagnetizing of choke is guaranteed
T4
safe operation during dead time becauseof low voltage / low energy
15-30s 15-30s
© 11-02-08 Delta Energy Systems 6
Energy Systemsgy y
Sinewave Converter: test results
Step responseVout = 20V 200VPout = 7.5% 75%VLine = 230V
Vout 100V/DIV/10ms internal control signal
© 11-02-08 Delta Energy Systems 7
Energy Systemsgy y
Sinewave Converter: test results
Step responseVout = 200V 20VPout = 75% 7.5%VLine = 230V
Vout 100V/DIV/10ms internal control signal
© 11-02-08 Delta Energy Systems 8
Energy Systemsgy y
Sinewave Converter: ideal solution
Advantages Sinewave Converter does not create any harmonics
easy to meet EN61000-3-2 (Harmonics)y ( )
To meet Flicker requirements does not depend on control mechanism any more. It only depends on load dynamics which can be maximized by use of the Sinewave Converter. Soft transition between operation points enlarges dynamic range while still in line withSoft transition between operation points enlarges dynamic range while still in line with flicker requirements. easy to meet EN61000-3-3 (Flicker)
All ki d f t l i t f b i l t d f t t lt / t/ t l All kind of control interfaces can be implemented for output voltage/current/power control digital (serial, parallel), analog, PWM, others
Peak current limitation
© 11-02-08 Delta Energy Systems 9
tolerant for overload conditions
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Sinewave Converter: ideal solution
Advantages Sinewave Converter offers linear and continuous control characteristic
complete range between 0-100% programmable Vout
Efficiency 98% simple thermal handling, high power density
p g p g
75%
100%
Si l d li ht d i50%
Simple and light design easy to integrate into end-user application
Programmable limitation of output voltage range
25% 50% 75% 100% controlsignal
25%(0-90Vrms) offers use all over the world with only one type of load / module simplifies logistics
© 11-02-08 Delta Energy Systems 10
signal
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Use of Sinewave Converter
Applications copy machines (fuser lamps)
IR lamps IR lamps
printing machines, laser printers
heaters for process control (medical, biological, physical, chemical)
temperature regulating systems (technical applications)
Dryers
illumination
motor drives, motor control
steam generation
© 11-02-08 Delta Energy Systems 11
steam generation
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Sinewave Converter = Electronic Variac
Comparison traditional variac:
4kW, 230V, 50Hz265x405x415mm, 1.47W / inch3
44kg, 91W / kg
Sinewave Converter:Sinewave Converter:4kW, 230V, 50Hz105x95x315mm, 20.9W/inch3
2.1kg, 1.9kW/kg
V2V1
Sinewave Converter:
© 11-02-08 Delta Energy Systems 12
Equivalent Circuit Diagram
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Applications: 3x900W for copy machineC N h l d Customer: Netherlands
Application: high speed copy machine Heater: infrared fuser lamp (900W) Modules: 3 modules used per copy machine (3x900W) Cooling: convection cooling Size: 130x70x195mm / 1kg
Vin: 190Vac - 264Vac
Size: 130x70x195mm / 1kg
Vout: 0-230Vac Pout: 0-900W (0-4Aac) Control: digital, 6 Bit parallel for output
© 11-02-08 Delta Energy Systems 13
g , p pvoltage control
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Applications: 2400W for copy machineC USA Customer: USA
Application: high speed copy machine Heater: infrared fuser lamp (2400W) Modules: 2 modules used per copy machine Cooling: fan cooled Vin: 190Vac - 264Vac Vin: 190Vac 264Vac Vout: 0-230Vac Pout: 0-2400W (0-10.5Aac) Size: 77x90x305mm / 2.0kg Control: PWM, 500Hz, 0-100% duty cycle
for output voltage control
© 11-02-08 Delta Energy Systems 14
Energy Systemsgy y
Applications: 4000W for printing machineC USA Customer: USA
Application: high speed printing machine (fuser lamp) Heater: infrared heating tube (4000W) for toner fixing Modules: 2 modules used per copy machine Cooling: fan cooled Vin: 190Vac - 264Vac Vin: 190Vac 264Vac Vout: 0-230Vac Pout: 0-4000W (0-18.5Aac) Size: 105x95x315mm / 2.1kg Control: PWM, 500Hz,
0-100% duty cycle for outputvoltage control
© 11-02-08 Delta Energy Systems 15
voltage control
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Applications: 540W / 750W for diagnosticsC G Customer: Germany
Application: PCR analysis (Polymerize Chain Reaction) Heater: linear resistor for process control Modules: 1 module combined with power supply Cooling: fan cooled Vin: 90Vac - 264Vac Vin: 90Vac 264Vac Vout: 0-90V Pout: 0-540W / 750W (0-6A / 8.5A)
(2 versions)(2 versions) Control: serial, 12 Bit high speed for
output voltage control Accuracy: accuracy for temperature control
© 11-02-08 Delta Energy Systems 16
Accuracy: accuracy for temperature control< 0.5°C required
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Applications: 800W for blood dialysisC G Customer: Germany
Application: blood dialysis Heater: thick film resistor for process control Modules: 1 module combined with power supply Cooling: fan cooled Vin: 90Vac - 264Vac Vin: 90Vac 264Vac Vout: 0-90V Pout: 0-800W (0-10A) Control: PWM, 500Hz,
0-100% duty cycle for outputvoltage control
© 11-02-08 Delta Energy Systems 17
Energy Systemsgy y
Patent StatusUS P d US 932 934 US Patent granted: US 5,932,934
German Patent granted: DE 197 10 161 C2 European Patent pending: EP 0 865 150 A3
© 11-02-08 Delta Energy Systems 18
Energy Systemsgy y
Questions
Contact
Don Nasca
Delta Energy SystemsDelta Energy Systems
503-703-0208
© 11-02-08 Delta Energy Systems 19