Dynamic spin dynamo Low-Inertia Motor (DSD Series)
S-DSD
SLENDER DYNAMIC SPIN DYNAMO
H-DSD
HEAVY DUTY DYNAMIC SPIN DYNAMO
These motors boast super low inertia and are optimal for servo applications and automotive testing.
Sample configuration of dynamo equipment for automotive testing
These dynamos enable you to build test systems that shorten development schedules and improve performance in the development of next-generation automobiles. We support systems with all sorts of configurations based on our customers’ requirements. Please contact us for more information.
Features/functionality
- Lowest inertia in the industry
- Transient operation on the level of a real vehicle
- Capable of being attached under the same conditions as an actual vehicle
To reproduce the responsiveness of an engine, we pursued low inertia even further based on a low-inertia permanent magnet sync motor (ED motor). The inertia moment (J) of our S-DSD series motors is one-tenth that of other motors with the same output.
Comparison of inertia values between an induction motor and S-DSD
| Types | Output | Base rotating speed | Inertia (J) |
|---|---|---|---|
| Max rotating speed | |||
| Induction motor | 220kW | 4,000min-1 | 0.73kg・㎡ |
| 8,000min-1 | |||
| S-DSD | 220kW | 4,000min-1 | 0.073kg・㎡ |
| 8,000min-1 |
Combining a low-inertia S-DSD series dynamo with a VF66C high-response inverter enables a torque frequency response of 2.4 kHz. This makes it possible to better reproduce behaviors that approach actual automobile engines.
VF66C high-response inverter
Size and weight have been dramatically reduced compared to ordinary ED and UF motors. Configurations that approximate an actual vehicle, which has been impossible in the past, such as FF transaxel testers, are now possible. And when combined with a drive mechanism that moves up, down, and side to side, tests under the same conditions as an actual vehicle are now possible.
FF transmission bench
Specifications
| High-speed, low-inertia dynamos (S-DSD,S-DSDi, S-DSD HP,S2-DSD) High RPM/Super low inertia/Small size/Excitation | |
|---|---|
| Output | ~505 kW |
| Rotating speed | ~ 10,000 min-1 |
| Torque | Up to 1,610 Nm max |
| Inertia moment (J) | 0.016kg･㎡～ |
| Super high speed, low-inertia dynamo (S-DSD HS) Super high rotating speed/Low inertia/Small size | |
| Output | ~275 kW *Please consult us for outputs exceeding 220 kW. |
| Rotating speed | ~20,000 min-1 *Please consult us for outputs exceeding 16,000min-1. |
| Torque | Up to 525 Nm* max |
| Inertia moment (J) | 0.169kg･㎡～ |
| High-torque, low-inertia dynamo (H-DSD, W-DSD) High torque/Low inertia/Wide range | |
| Output | ~535 kW |
| Rotating speed | ～4,000min-1 |
| Torque | Up to 5,960 Nm* max |
| Inertia moment (J) | 0.93kg･㎡～ |
*Please consult us for torques exceeding the indicated values.
| Common specifications | |
|---|---|
| Protection | IP42 |
| Insulation type | H |
| Attachment method | Leg-mounted standalone (side) |
| Cooling method | Water cooled |
| Starting torque | 150% |
| Overload capacity | 150% for 1 minute |
| Lubrication method | Grease lubricated/Oil-air lubrication |
| Attachments | Speed detector PTC thermistor element |
