Emerson 540VDC Magnetic Levitation, Power System, System Performance, Electrical system schematic

System Overview

5.1.2Power System

The electrical system of the Liebert FS is shown in Figure 36. The schematic shows the Magnetic Levitation Module [see 5.1.7 - Magnetic Levitation Module (MLM)]. The pre-charge resistor and contactor which limit the inrush current into the DC bus capacitors. The six-pulse IGBT power con- verter (IGBT Power Conversion Module (PCM) on page 36) which is controlled by the Power Conversion Module Controller (Power Conversion Module on page 33) and which also monitors and controls the operation of the entire system. These components are housed within the Power Con- version Module. The Flywheel Module is shown as a cross-section to illustrate the rotating group and the synchronous reluctance motor-generator.

Figure 36	Electrical system schematic
			Flywheel Module
		IGBT Power Converter
+	Soft Start
To UPS
Battery
Input			Speed Sensors Temperature Sensors Position Sensors
-
	DC Monitoring	Motor Generator Controls	Magnetic Levitation
	Power Conversion Module Controller		Module

Control

Panel

	AU Auxiliary Backup
COM

Remote Monitoring & Controls (Optional)

5.1.3System Performance

The maximum output power of the Liebert FS varies according to the duration required. This is illus- trated in Figure 5 (output power versus time). Increased power, duration or redundancy may be achieved by adding units in parallel as shown in Figures 2 through 4.

34	DISCONTINUED
	PRODUCT