Engine & Motor Testing Dynamometer

Introduction

The power dynamometer adopts AC variable frequency feedback loading, and the loaded energy is fed back to the grid through the load generator, instead of simple thermal energy consumption, which greatly reduces energy efficiency costs, which is the main theme of the dynamometer industry Routine test items: temperature rise, noise, vibration test, load test, fatigue test, energy efficiency test, performance test, dynamic balance correction, no-load running-in, power generation test, power test, etc. Involved equipment: engines, motors, gearboxes, reducers, powertrains, drive shafts, bearings, hydraulic stations, drives and other occasions that require energy transmission

Key Advantages

  • Significant energy saving effect the mechanical energy generated by the prime mover is converted into electrical energy and fed back to the grid.
  • Good two-way loading characteristics Provide two-way consistent loading capacity to adapt to the power mechanical test of different steering.
  • Superior low-speed loading capacity Basically, the rated load torque can be provided from zero speed (encoder required).
  • High-speed torque response speed the torque response speed of the electric dynamometer can reach the ms level, which is used in the simulated load and new energy industries.
  • Provide anti-drag ability The electric dynamometer can be used as a power source, such as mechanical efficiency power drive, generator power drive
  • Multiple protection functions Provide multiple protection functions such as phase loss, overvoltage, overcurrent, overspeed, etc. to protect the dynamometer and test pieces

DRIVE USING IN THE APPLICATION:

  • DR MATRIX with AFE .
  • To test and evaluate rotating machinery, dynamometers and test stands are employed. Manufacturers of tractor and forklifts, gasoline and diesel engines, automobiles, racecars, performance shops, lawn and agricultural equipment, and performance shops all employ load dynes. Basically, any company that manufactures, integrates, or changes engines and other rotating systems uses load dynes. The horsepower of an engine can range from a lawn mower's 5 HP to a huge diesel engine's 1500 HP or more.
  • An electric motor and AC Drive are frequently used in load dynamometers, also known as absorbers or load dynamos, to simulate a mechanical load on gasoline and diesel engines. To determine component life, develop preventative maintenance schedules, or "break-in" a new or rebuilt engine, endurance testing necessitates running the engine continuously under load for days, weeks, or months.
  • A load dynamometer takes a lot of the engine's energy in. In the past, load dynes loaded the engine using a friction brake, fluid (water) brake, or eddy-current brake. Eddy current and fluid brakes create torque under load that is rather consistent, although the older techniques squandered engine power.
  • Regenerative systems can be advantageous for other test dynamometers that need rapid accelerations and/or decelerations. When aiming to attain a specific deceleration or cycle time, longer deceleration times are necessary to prevent regenerative energy from being produced or resistors are employed to burn off the additional energy.
  • It is possible to recover the energy that would otherwise be lost in a resistor by rerouting the energy created by rapidly decelerating the load back to the power line. The amount of energy utilized from the utility is reduced overall when power is returned back onto the line and distributed to other loads.

APPLICATION CHALLENGES:

  • The drives and motors need to be incredibly strong and able to run for months without being tended to without failing or interfering with the test.
  • The Drive ought to be able to manage torque repeatedly across the entire speed range.
  • The Drive must be able to operate in a system with extremely sensitive sensing apparatus without interfering with low-level sensor signals.
  • To partially recoup the lost fuel expense, the load dyne system should be able to regenerate the mechanical energy that was absorbed back to the power line.
  • The load dyne system ought to be economical.
  • Drives that use Matrix technology are distinct from traditional Drives. The Matrix Technology itself is where the distinction resides. To immediately convert a three-phase AC input voltage into a three-phase AC output voltage, unlike traditional drives, Darwin Motion’s Matrix technology uses a set of nine bi-directional switches arranged in a matrix.
  • Due to this, the rectifying circuit and DC smoothing circuit required by traditional AC Drive inverters are no longer necessary.

MATRIX DRIVE CHARACTERISTICS:

  • Low Harmonics (5% iTHD at drive input)
  • True Power Factor Near Unity (0.98 or better)
  • Regeneration of power (Full 4-Quadrant Control)
  • Additional Motor Control (Permanent Magnet Motor Control)
  • High Performance
  • Small Size
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