IS200BPIAG1A

IS200BPIAG1A is a bridge personality interface board designed and developed by GE. It is designed under the Drive Control series as an IGBT Drive Bridge Personality Interface Board. This enables communication between the IGBT three-phase drive's control and power electronics. The Interface Board (BPIA) connects an IGBT 3-phase AC drive's control and power electronics. Six isolated IGBT gate driver circuits, three isolated shunt voltage controlled oscillator (VCO) feedback circuits, and isolated VCO feedback circuits to monitor the DC link, VAB, and VBC output voltages comprise the interface. This board also includes hardware phase overcurrent and IGBT desaturation fault protection. The P1 connector is used for bridge control connections. Six plug connectors are used to connect the phase A, B, and C IGBTs. The BPIA board is installed in a VME rack.

Power Supplies

• There are nine isolated power supplies derived from the secondary windings of three transformers, one for each phase. The P1 connector provides a 17.7 V AC square wave input to the transformer primaries.
• Two of each transformer's three secondaries are halfwave rectified and filtered to provide the upper and lower IGBT gate driver circuits with isolated +15 V (VCC) and 7.5 V (VEE) supplies.
• The third secondary is fullwave rectified and filtered to supply the isolated 12 volts needed by the shunt current and phase voltage feedback VCOs, as well as the fault detection circuitry. On the +12 V supply, a 5 V linear regulator generates a light 5 V logic supply. The control logic is referenced by +5 V.

IS200BPIAG1A Features

• It features a faceplate. The board ID, the manufacturer logo, and the statement "Install in slot 6 only" are all included on this narrow faceplate. The board's P1 connector connects to a VME type rack. If the board is plugged into the incorrect slot, it may be damaged. The board also has six additional male vertical pin connectors for connecting to phase A, B, and C IGBTs.
• There are no adjustable hardware, fuses, or test points included with the BPIA. It has three transformers, nine resistor network arrays, six transistors, and a variety of capacitors and resistors. It also has a 1024-bit memory chip that has revision information and board identification pre-programmed into it.

Characteristics

• An IGBT Drive Bridge Personality Interface Board is a device that is designed to provide an interface between the IGBT (Insulated Gate Bipolar Transistor) drive electronics and the control system in a power conversion system. This board acts as the personality of the IGBT drive, providing the necessary input/output (I/O) signals and control functions required to operate the IGBTs in a desired manner.
• The main function of the Board is to receive control signals from the control system and translate them into the appropriate drive signals to control the operation of the IGBTs. It also provides protection and monitoring functions for the IGBTs, ensuring safe and reliable operation of the power conversion system.
• The board typically includes input connectors for control signals, output connectors for IGBT drive signals, and various components such as op-amps, comparators, and protection circuits. The board may also include digital and analog interfaces for communication with the control system.

Board Installation

1. Place the board in the appropriate rack slot.
2. Begin seating the board by firmly pressing the top and bottom of the board with your thumbs at the same time.
3. Finish seating the board in the slot by tightening the screws at the board's top and bottom. To ensure that the board is seated squarely, tighten the screws evenly.
4. Reconnect all cables to the BPIA board as directed, making sure that they are properly seated on both ends.
5. Replace the protective cover on the right side of the board rack by doing the following:
   1. Slide the protective cover over the four side screws and towards the back of the rack (in the four slots).
   2. Tighten the screws at the top and bottom of the front of the cover. (The screws are held in place by the front of the cover.)
   3. Tighten the four screws on the cover's side.
6. Snap the drive cabinet door shut.

Mean Time Between Failure

• Average time between failures (MTBF) is a basic measure of system reliability. It is the average failure-free operating time over a specific measurement period under specified conditions. Depending on the level of redundancy used, a failure may or may not cause a problem with the overall system. The MTBF of each replaceable system component is typically specified.
• The MTBF roll up of system components provides the equipment owner with the information required to determine how long the equipment can be expected to operate without failure under given conditions.
• If it is critical that the equipment does not fail while in use, the owner can use this data to schedule maintenance/replacement prior to failure. Alternatively, redundant applications could be used to prevent system problems in the event of a failure.
• MTBF data can also be used to identify weak links in a system. To achieve higher reliability, the system engineer provides contingency options for those weak links.