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D
Causes of Harmonics Generation
•
Usually, electric machines have built-in circuitry that converts commercial AC power
supply into DC power.
Such AC power, however, contains harmonics due to the difference in current flow be-
tween DC and AC.
Obtaining DC from AC Using Rectifiers and Capacitors
DC voltage is obtained by converting AC voltage into a pulsating one-side voltage with
rectifiers and smoothing the pulsating one-side voltage with capacitors. Such AC cur-
rent, however, contains harmonics.
Inverter
The Inverter as well as normal electric machines has an input current containing har-
monics because the Inverter converts AC into DC. The output current of the Inverter is
comparatively high. Therefore, the ratio of harmonics in the output current of the Invert-
er is higher than that of any other electric machine.
Voltage
Time
Rectified
Voltage
Time
Smoothed
Voltage
Time
Current
Time
A current flows into the
capacitors. The current
is different from the
voltage in waveform.
Design
Chapter 2
Summary of Contents for SYSDRIVE 3G3JV-AB001
Page 1: ...USER S MANUAL FIRST DRAFT SYSDRIVE 3G3JV Compact Simplified Inverter Cat No I528 E1 1...
Page 3: ...Chapter 1 Overview 1 1 Function 1 2 Nomenclature 1...
Page 9: ...Chapter 2 Design 2 1 Installation 2 2 Wiring 2...
Page 43: ...Chapter 3 Preparing for Operation and Monitoring 3 1 Nomenclature 3 2 Outline of Operation 3...
Page 52: ...3 10 Preparing for Operation and Monitoring Chapter 3...
Page 53: ...Chapter 4 Test Run 4 1 Procedure for Test Run 4 2 Operation Example 4...
Page 62: ...4 10 Test Run Chapter 4...
Page 131: ...7 22 Maintenance Operations Chapter 7...
Page 132: ...Chapter 8 Specifications 8 1 Inverter Specifications 8 2 Option Specifications 8...
Page 138: ...Chapter 9 List of Parameters 9...
Page 150: ...Chapter 10 Using the Inverter for a Motor 10...
Page 165: ...Revision History 10 2...
Page 166: ...Cat No I528 E1 1 SYSDRIVE 3G3JV Compact Simplified Inverter USER S MANUAL...