The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 23, 2001
Filed:
May. 10, 2000
Doug D. Deng, Canton, MI (US);
Kon-King Mike Wang, Canton, MI (US);
Vijay Bhavaraju, Canton, MI (US);
Ford Global Technologies, Inc., Dearborn, MI (US);
Abstract
An inverter circuit (,) has a plurality of voltage source inverters (VSI) coupled in parallel. Each of the voltage source inverters are coupled to a load (,). A synch signal source (,) generates a square wave from a fundamental operating frequency. The square wave generated by the synch signal source (,) is coupled to each voltage source inverter (VSI). Each voltage source inverter VSI has a timer counter (,), a microprocessor (,), and an inverter (,). The timer counter (,) is preferably a triangle wave generator that corresponds to the time since a rising edge of a synch signal (,) The microprocessor (,) samples the cyclic output signal (,) and determines a phase angle for the voltage source inverter. The phase angle and the voltage magnitude are provided to the inverter (,). The inverter (,) provides an output signal to the load that has the same phase angle as the outputs of the other phase inverters.