US 5,390,068 A · Microprocessor based integrated generator set controller apparatus and method

Abstract

An electrical generator system integrated controller device utilizing PID control and capable of regulating voltage or current, and frequency simultaneously. The device utilizes a micro-controller (30.1) to monitor the engine generator set (20), then determines the appropriate signal to deliver to the electrical generator set (20) to regulate the engine throttle (21) and the generator (22) field windings. The micro-controller (30.1) also provides for real and reactive load sharing with additional generator sets (40) while also providing for an integrated circuit interrupter module (500) to open the line from the generator (22) to the load bus (42). Additionally, serial communications (34) are provided as well as displays (35), meters (37), and operator input (36). Finally, the permissive paralleling module (700) provides that the engine electrical generator set (20) will not be allowed to be connected to the load bus (42) until standards of voltage and phase have been achieved for a set period of time.

Claims13

Dependent claims

A circuit interrupter system for opening a switch in line between an electrical generator and an electrical load bus in accordance with particular interrupt data by monitoring an electrical characteristic of the waveform provided by the generator to the load bus, the system comprising:

(a) interrupt data memory means for storing interrupt data in a predetermined data format, the interrupt data including comparison values associated with the monitored electrical characteristic and values of time corresponding to said comparison values;
(b) data processing means, cooperatively connected to said interrupt data memory means, the generator and the switch, including:
(i) means for monitoring the electrical characteristic of the waveform;
(ii) first comparison means for comparing iteratively said comparison values and the electrical characteristic of the waveform;
(iii) means for selectively incrementing or decrementing a plurality of timer values, each of which is associated with one of said comparison values, based on the result of said first comparison means;
(iv) second comparison means for comparing, for each comparison value, the corresponding timer value and value of time stored in said interrupt data memory means;
and
(v) means for opening the in line switch based on the results of said second comparison means, whereby the generator is isolated from the load bus by the in line switch being opened.

5 more elements

Dependencies are inferred from the claim text.

Microprocessor based integrated generator set controller apparatus and method

Life of this patent

Microprocessor based integrated generator set controller apparatus and method

Life of this patent

Abstract

Claims13