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EME Series E-Motor Emulator

 
.Resolver simulation
.Encoding disk simulation
.Temperature simulation
  • EME


Summary


The E-Motor Emulator is a new type electronic load utilizing both power conversion technologies and high-power high-frequency switching devices to emulate port characteristics of electric motors. Based on an accurate dynamic mathematical model, the emulator can output the characteristics of electric motors under working conditions. It can serve as:

(1) An electronic load to the grid (at special power levels). Ideal for studying the characteristics of power system;

(2) An E-Motor Emulator to perform functionality, endurance, fault diagnosis, and safety protection testing. Ideal for the R&D process of motor controllers and frequency converters.

Test Items


  • E-motor emulation

  • Resolver simulation

  • Encoding disk simulation

  • Temperature simulation

  • Hall signal

  • Fault simulation


Advantages


  • Bidirectional energy flow

  • Fault simulation

  • Accurate simulation of dynamic characteristics

  • Serve as an AC power supply under synchronous generator mode

  • Emulate the working conditions of both permanent magnet synchronous motor & asynchronous motor

  • No vibration & low noise

  • Protection for DUT (device under test)

  • Standard communication interfaces

  • Response time: ≤1ms


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Motor Models

Parameter Setting

PMSM model

D Axis inductance Ls=Ld

Q Axis inductance Lq

Stator resistance Rs

Magnetic flux Ψ

Mechanical moment of Inertia mech

Friction coefficient

Pole-pairs p

ASM model

Stator resistance Rs

Rotor resistance Rr

Stator leakage inductance Lls

Rotor leakage inductance Llr

Excitation inductance Lm

Mechanical moment of Inertia mech

Friction coefficient

Pole-pairs p





Specifications & Parameter

Phase

3

Max. Current Slew Rate

2500A/ms

Rated Rotating Speed

0~100000RPM (standard)

Motor Steering

Clockwise/Counterclockwise

Motor Torque

Positive/Negative

Number of Pole-pairs

1~20

Resolver Excitation

3kHz~20kHz

Motor Leakage Inductance

50uH~2650uH

Current Frequency

0Hz~4000Hz (for rated current 300A model)

0Hz~5000Hz (for rated current 600A model)

Stator Resistance

0Ω~5Ω

Rotor Dynamic Speed

dω/dt>10*106 rpm/ms

Motor Model

Synchronous/Asynchronous motor

Position Sensor

Resolver/Encoding disk/Hall sensor

Fault Simulation

Short circuit/Disconnect/Real-time error simulation

Temperature Sensor

4 channels, NTC or PTC

Communication Interface

RS485/CAN/LAN

Protection

Overload/DUT protection

*The specifications & parameters of the product above are subject to Kewell’s interpretation. Further notice will not be made for changes.




Experiment Data Comparison

Controller + E-Motor

Controller + E-Motor Emulator

Speed

(Given)

Torque

(Display)

Voltage

(Actual)

Current

(Actual)

Torque

(Given)

Speed

(Given)

Torque

(Display)

Voltage

(Actual)

Current

(Actual)

Torque

(Given)

100

305

33

79.7

300

100

298

34

77

300

300

305

91.3

80.3

300

300

302

90

78.3

300

500

306

145

80.6

300

500

301

145

78

300

700

307

201

81

300

700

298

200

80

300

1000

310

286

81.7

300

1000

305

287

79

300

1300

305

358

78.6

300

1300

297

358

77.6

300

1500

292

392

75

300

1500

291

390

77.6

300

1500

378

403

95.6

400

1500

383

404

100

400

1700

325

425

74

300

1700

320

424

75

300

2000

167

413

60

200

2000

170

414

62

200



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