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Demand more harmonics mitigation
The DG1 Enclosed Drive family incorporates the latest Eaton drive technology into pre-engineered enclosed solutions covering the industry’s most common applications.
Using the benefits of the PowerXL DG1, the enclosed family provides enhanced user safety with the Safe Torque feature as well as industry-leading energy efficiency from the patented Active Energy Control algorithm.
Eaton further raises the bar by providing customers with industry best lead times with the Rapid Response System. This system allows customers to select from 9 million standard configurations that have been pre-engineered with each configuration having a set lead time. The Rapid Response System delivers an improved quotation process and a faster delivery.
Ease of use: Uses the core DG1 drive platform, Startup Wizard and built-in applications
Remote monitoring: PowerXL EGS irrigation pump panel is specifically designed for the irrigation pumping industry and includes Internet of Things (IoT) connectivity for remote monitoring via a cellular gateway
Reliability: High overload (CT) and low overload (VT) rated, conformal coated boards, brake chopper circuit, durable metal power section, 50°C rating (60°C de-rating), removable keypad rated IP54
Energy optimization: Active energy control algorithm, 5% DC choke, input surge protection, EMI/RFI filter built-in
Active Energy Control reduces the output and motor current as much as possible while ensuring the motor continues to spin at the required speed.
Watch the video to learn more.
| Technology |
Eaton VFD type |
How it works |
Typical THD |
Advantages |
Disadvantages |
|---|---|---|---|---|---|
| Inductive reactors |
Mitigates higher-order harmonics by providing high input impedance that limits high-frequency currents. | 33-38% |
Low-cost, simple application |
Low effectiveness Voltage drop concerns |
|
| 12-Pulse converters |
HCX |
Two parallel 6-pulse converters fed by parallel isolation transformer paths, phase shifted 30°, which mitigates 5th and 7th order harmonics. Input impedance mitigates higher-order harmonics as well. | 12-18% |
Simple to apply Extremely robust |
Not as effective as other methods Relative high cost compared to passive filter |
| Passive filters |
Provides high input impedance for higher-order harmonics and a shunt-tuned reactor and capacitor to mitigate 5th and 7th harmonics. | 6-8% |
Simple retrofit Low cost for performance Insensitive to voltage balance |
Challenges with generator design Power factor issues Less robust than 18-pulse |
|
| 18-Pulse converters |
CPX |
Three parallel 6-pulse converters fed by a single-phase shifting autotransformer, phase shifted 20° to cancel all harmonics below the 17th. Input impedance mitigates higher-order harmonics as well. | 3-6% |
Simple to apply Extremely robust |
Higher cost on small hp |
| Active Front End drives |
RGX |
IGBT-based front end pulls relatively linear power from the line and uses a L-C-L filter to mitigate the IGBT switching noise. | 3-5% |
Slightly higher efficiency Immune to voltage imbalance Regeneration capability |
High cost, not as robust as 18-pulse |
