Oscillation starting control method for thermo-acoustic engine

• Main Authors: ZHAO ZHIQIANG, GUO TIE, JIA HAIYUAN, HONG YIBO, HE XIN, XIA JIAKUAN
• Format: Patent
• Language: Chinese; English
• Published: 06.04.2011
• Subjects: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The invention discloses an oscillation starting control method for a thermo-acoustic engine. The method comprises the following steps of: controlling exciting current of a permanent magnet linear motor when oscillation is started; controlling output power of a motor by adjusting the amplitude of the exciting current, the movement travel of a motor rotor and the speed of the motor; adjusting the permanent magnet linear motor to quickly move to reach a resonant frequency of the thermo-acoustic engine, driving the thermo-acoustic engine to run to reach a system resonant state and switching into an engine state to run; or adjusting the running speed of the permanent magnet linear motor, taking the thermo-acoustic engine as a dragging load of the permanent magnet linear motor, quickly starting oscillation under the action of the dragging of the motor; and switching into the engine state to run after the thermo-acoustic engine and the permanent magnet linear motor synchronously run to reach the resonant state. In t