contents:
Part I: Harmonics and Power Quality
1. Introduction to harmonics
2. Harmonic sources
3. Harmonics and resonance
4. Reasons for limiting harmonics
5. Reducing the effects of harmonics
Part II: The PQF
1. General principle of active filtering
2. The ABB Active filter: the PQF
2.1. The compensating current generator
2.2. PWM principle
2.3. Control electronics
3. The PQF: performances
3.1. Filtering
3.2. Reactive power
3.3. Priorities / Filter mode
4. Protections and alarm
4.1. Protections
4.2. Alarm
Part III: Choosing and installing a PQF
1. PQF range and ratings
1.1. PQF systems up to 600V
1.2. PQF systems up to 1000V: PQFB
2. Programming the active filter
3. Choosing a PQF: selection guide
3.1. PQF selection guide: method 1 based on voltage THD
3.2. PQF selection guide: method 2 based on current THD
3.3. PQF selection guide: method 3
4. Installing a PQF
4.1. Location
4.2. Overvoltage
4.3. Connection
4.4. Operation
4.5. Maintenance
Part IV: PQF applications and practical examples
1. Electrolysis equipment
2. Induction heating
3. Cable car
4. Welders
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