The Kress Intelligent Motor and Drive System Technology At The Heart of the 21st Century American Manufacturing Renaissance © Kress Technology / www.kresstechnology.com

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Motor and Drive Systems 2015 A Design for Fixed Electric Motor Systems Created by New Motor Technology, Improved Drive Design and Solid State Electronic Devices Thursday, January 22, 2015 11:25-11:55 AM

Brian K. Ott, CTO• Kress Technology Dr. Keith Klontz, CEO • AMT Dr. Dal Ohm, President • Drivetech, Inc. 1/23/2015

© Kress Technology / www.kresstechnology.com

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Agenda (What Makes Kress Different) • Design Goals / Design —Modular design —Totally field reparable —Flexible geometry —Wide speed / torque envelope —Integrated Drive —Network Interface / IoT

• Test Results • Next Steps

10 hp Industrial Prototype © Kress Technology 2015 / www.kresstechnology.com

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Motor Layout Pictorial

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Axial Cross Section of 10 hp Prototype

Output Shaft

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Kress Stators Can Be Easily Replaced In The Field

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Actual Stator Replacement

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Drive & Control of SRM AC 220V

DB1 Q1H Shunt Regulator

C4-6

C3

C2

C1

Q1L

CS1

SRM Motor

Q2H Q2L

AC 110V

Rectified DC Supply

110V

Relay Control Control Power Supply DC 12V 3A Control Computer

+12V Power

Q3H

Cooling Fan

Heatsink Temp Sense

CS2

Q3L

CS3

Gate Drive Signal

Interface Board

Current Sense Resolver Feedback

RS-232 (3)/CAN

© Kress Technology / www.kresstechnology.com

I/O

Control Board

SR Motor Drive

Key Innovations Magnetics

Power Electronics

Networking

• Axial/Circumferential flux path

• IGBT controls 3 firing groups of 4 stators each

• More than an “onoff” switch

• Dual spiral rotors • Hiperco50 rotor • Individual stators • Potential to manage configurations via software parameter manipulation

• Programmable CPU allows fine tuning of firing patterns • Sensors deliver data to CPU in real time • Pulse Width Modulation technique

© Kress Technology / www.kresstechnology.com

• Connect to automation systems • Local MMI via handheld devices like tablets, laptops • Graphical User Interface (GUI) under development

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Results as of January 22, 2015 •Mechanical assembly completed •Drive built, first stage programming completed •Static torque testing complete • Finite Element Analysis (FEA) model • Performance improvement testing and calibration scheduled © Kress Technology / www.kresstechnology.com

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DC Current Static Torque Test Results Torque of phase A 80.00

70.00

60.00

Torque (Nm)

50.00

40.00 45A 45A FEA

30.00

20.00

10.00

0.00 0 -10.00

5

10

15

Angle (degree)

© Kress Technology / www.kresstechnology.com

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Next Steps for Kress Technology • Speed/Torque/Efficiency Characterization • Iterative testing and FEA modeling • Software-driven scalability prototyping • Design for manufacturability, cost reduction • Application-specific design geometry © Kress Technology 2015 / www.kresstechnology.com

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Panel Discussions www.kresstechnology.com

www.advancedmotortech.com

www.drivetechinc.com © Kress Technology / www.kresstechnology.com

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Motor Layout Pictorial

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Flux Path Pictorial

Left Spiral Wound Rotor

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Right Spiral Wound Rotor

DC Current Static Torque Test Results Torque of phase A 80.00

70.00

60.00

Torque (Nm)

50.00

40.00 45A 45A FEA

30.00

20.00

10.00

0.00 0 -10.00

5

10

15

Angle (degree)

© Kress Technology / www.kresstechnology.com

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Drive & Control of SRM AC 220V

DB1 Q1H Shunt Regulator

C4-6

C3

C2

C1

Q1L

CS1

SRM Motor

Q2H Q2L

AC 110V

Rectified DC Supply

110V

Relay Control Control Power Supply DC 12V 3A Control Computer

+12V Power

Q3H

Cooling Fan

Heatsink Temp Sense

CS2

Q3L

CS3

Gate Drive Signal

Interface Board

Current Sense Resolver Feedback

RS-232 (3)/CAN

© Kress Technology / www.kresstechnology.com

I/O

Control Board

SR Motor Drive

Kress SRM Drive Design • 10 HP Continuous, 20 HP Peak rating • 3-Phase Asymmetric Bridge Converter • Two Semitrans modules per phase (1 IGBT+1 Diode) • Opto-isolated gate drive • 32-bit Floating-point DSP control

+ Vbus Vbus Qa

Qb

Qc

+ A

Qa’ -

© Kress Technology / www.kresstechnology.com

B

C

Qb’

Qc’

Current Regulation & Commutation • 3 Independent Phase Current Regulators • One Open-phase Detection & Limp mode Operation • Fault Detection − Over-current − Over-temp − Locked Rotor

Velocity or Position Controller

T*

Current Waveform Profile Based on Electrical Angle

Va*

Ia

Current Regulator

Ib

Current Regulator

Vb*

Ic

Current Regulator

Vc*

Ia* Ib* Ic*

PWM PWM

PWM

PWM1-2 PWM3-4

PWM5-6

Rotor Angle ADC Hdwr +

Ia,Ib,Ic

Advanced turn-on & Shift of conduction angle

(Top) standard (Bottom) Shifted Shifting of conduction angle

(Top) Standard (Bottom) Advanced Increased conduction angle

© Kress Technology / www.kresstechnology.com

Thank You www.kresstechnology.com

www.advancedmotortech.com

www.drivetechinc.com © Kress Technology / www.kresstechnology.com

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