Power Test, Inc.

AC Series Dynamometer


The AC-Series (Alternating Current) engine dyno is designed for additional functionality not provided by other […]

The AC-Series (Alternating Current) engine dyno is designed for additional functionality not provided by other dynamometer testing technologies. The AC-Series is capable of applying power to the engine as well as absorbing power (braking) via the connected driveshaft. This allows the dynamometer to simulate external forces on the engine and allows the dyno to crank an engine eliminating the need for an engine-mounted starter.

The AC-Series does not require a water cooling system and instead dissipates energy via an air-cooled load bank or returns power to the grid via an AC regenerative drive.

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The Power Test AC Series Dynamometer is designed and manufactured using a powerful yet simple design solution; unlike typical Water Brake or Eddy Current Dynos; they have the ability to apply power to the engine as well as absorb power from the connected shaft. This gives AC Dynamometers additional functionality , such as simulating the forces on an engine while a vehicle is rolling downhill, or allowing the dynamometer to crank an engine, which eliminates the need for an engine-mounted air or electric starter.

AC Dynamometers also eliminate the need for cooling media (water systems) to remove the power absorbed from a engine. Power produced by the engine, while it is operating in LOAD mode, may be dissipated using an air-cooled resistive load bank, or returned to the electrical grid – via an AC regenerative drive. Where permitted, the operator of an AC Dynamometer can receive payment (or credit) from the utility for the returned power via net metering.

Features

  • Full 4-Quadrant Variable Frequency Drive for bi-directional, absorbing or motoring operation.
  • High-Precision inline torque meter measures direct flywheel torque.
  • High-torque low-inertia machines.

Benefits

  • “Green” energy technology returns power absorbed from the unit under test.
  • Eliminate dynamometer cooling media requirements.
  • Continuous dynamometer motoring capability eliminates the need for engine starters or cranking motors.

Specifications

Power Test has the knowledge and experience to design and manufacture a custom AC Dynamometer to match virtually any specifications. Below is just a small sampling of the custom AC Engine Dynamometers we have produced. Many options are available, contact our sales associates today.

Model Power Torque Max Speed
HD-100SB 100 HP
(75 kW)
175 lb*ft
(237 Nm)
8,000 RPM
HD-200SB 200 HP
(150 kW)
595 lb*ft
(807 Nm)
6,000 RPM
HD-400SB 400 HP
(300 kW)
1,200 lb*ft
(1,627 Nm)
5,000 RPM
HD-580SB 580 HP
(435 kW)
2,040 lb*ft
(2,767 Nm)
4,800 RPM
HD-670SB 670 HP
(500 kW)
2,347 lb*ft
(3,183 Nm)
4,200 RPM
HD-800RB 800 HP
(600 kW)
3,000 lb*ft
(4,067 Nm)
4,500 RPM
HD-1000SB 1,000 HP
(746 kW)
3,000 lb*ft
(4,068 Nm)
3,500 RPM

Features and Benefits

  • Power ranges up to 1,000 HP
  • Speeds up to 8,000 RPM
  • Torque up to 3,000 lb-ft
  • Full 4-quadrant variable frequency drive for bi-directional absorbing (or motoring) operation
  • High-precision inline torque meter measures direct flywheel torque
  • Green energy technology returns power absorbed from the unit under test
  • Eliminates dynamometer cooling media requirements

Power Test has the knowledge and experience to design and manufacture a custom AC Dynamometer to match virtually any specifications. Below is just a small sampling of the custom AC Engine Dynamometers we have produced. Many options are available, contact our sales associates today.

Model Power Torque Max Speed
HD-1005B 100 HP (75 kW) 175 lb*ft (237 Nm) 8,000 RPM
HD-2005B 200 HP (150 kW) 595 lb*ft (807 Nm) 6,000 RPM
HD-4005B 400 HP (300 kW) 1,200 lb*ft (1627 Nm) 5,000 RPM
HD-5805B 580 HP (435 kW) 2,040 lb*ft (2767 Nm) 4,800 RPM
HD-6705B 670 HP (500 kW) 2,347 lb*ft (3,183 Nm) 4,200 RPM
HD-8005B 800 HP (600 kW 3,000 lb*ft (4067 Nm) 4,500 RPM
HD-10005B (1000 (746 kW) 3,000 lb*ft (4068 Nm) 3,500 RPM