Differences between sinusoidal and block-shaped energy recovery
The differences between sinusoidal and block-shaped energy recovery are shown here by comparing the line voltages and line currents.
- MDP90A-..: Supply module
- MDR90B-..: Sinusoidal supply and regenerative module
- MDR91B-..: Block-shaped supply and regenerative module
Operating mode | MDP90A-.. | MDR90B-.. | MDR91B-.. |
|---|---|---|---|
Supply operation |
|
|
|
Regenerative operation | - |
|
|
[1] | Vline |
[2] | Iline |
Technical data | MDP90A-.. | MDR90B-.. | MDR91B-.. |
|---|---|---|---|
Nominal line voltage in V | 3 × 380 – 500 | 3 × 380 – 500 | 3 × 380 – 500 |
Nominal power for supply in kW | 10, 25, 50, 75, 110 | 50, 75 | 50, 75 |
Nominal power for energy recovery in kW | - | 50, 75 | 50, 75 |
Maximum power in kW | 250% | 250% | 250% |
Operating mode | Supply unit | Sinusoidal supply and energy recovery | Blocked-shaped supply and energy recovery |
DC link voltage | Vline ×√2 | 750 – 800 V | Vline ×√2 |
Typical energy saving | None | 15 – 35% | 15 – 35% |
Total harmonic distortion | High | Low | Moderate |
Weighted distortion factor PWHC/lrms | High | Low | Moderate |
Space required in control cabinet | Low | High | Moderate |
Price | Low | High | Moderate |
