Z-source network inverter circuit, circuit board, controller and air conditioner

• Main Authors: YAN XIAOJUN, FENG JUNPU, QIU WUFENG
• Format: Patent
• Language: Chinese; English
• Published: 23.07.2024
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; BLASTING; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; HEATING; LIGHTING; MECHANICAL ENGINEERING; RANGES; VENTILATING; WEAPONS

The invention discloses a Z-source network inverter circuit, a circuit board, a controller and an air conditioner, the Z-source network inverter circuit comprises an X-type impedance network, an IPM module and a controllable feedback filtering module, the controllable feedback filtering module comprises an input filtering module arranged between two input ends of the X-type impedance network and a bus filtering module arranged between a positive bus and a negative bus, the first switch can be controlled to be switched off when the IPM module is in a straight-through state, the third capacitor and the fourth capacitor are prevented from being directly connected between the positive bus and the negative bus in a bridging mode after being connected in series, and the third capacitor or the fourth capacitor can feed EMI interference generated when the IPM module is in the straight-through state back to the input filtering module to be filtered. When the IPM module is in a non-straight-through state, the first swi